NIPSCO INDUSTRIES INC
10-K405, 1998-03-26
ELECTRIC & OTHER SERVICES COMBINED
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<PAGE>
 
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                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                                   FORM 10-K
      [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
                             EXCHANGE ACT OF 1934
                  For the fiscal year ended December 31, 1997
                                      OR
    [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
                             EXCHANGE ACT OF 1934
              For the transition period from         to
                         Commission file number 1-9776
                            NIPSCO INDUSTRIES, INC.
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
                INDIANA                              35-1719974
    (STATE OR OTHER JURISDICTION OF     (I.R.S. EMPLOYER IDENTIFICATION NO.)
    INCORPORATION OR ORGANIZATION)
                                                        46410
         801 EAST 86TH AVENUE                        (ZIP CODE)
         MERRILLVILLE, INDIANA
    (ADDRESS OF PRINCIPAL EXECUTIVE
               OFFICES)
        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE 219-853-5200
SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:
<TABLE> 
<CAPTION> 
                                                NAME OF EACH EXCHANGE
             TITLE OF EACH CLASS                 ON WHICH REGISTERED
             -------------------                ---------------------
  <S>                                       <C>  
             COMMON SHARES                  NEW YORK, CHICAGO AND PACIFIC
    PREFERRED SHARE PURCHASE RIGHTS         NEW YORK, CHICAGO AND PACIFIC
  OBLIGATIONS PURSUANT TO SUPPORT                     NEW YORK
   AGREEMENTS WITH NIPSCO CAPITAL
   MARKETS, INC.
</TABLE> 

SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
                                     NONE
  INDICATE BY CHECK MARK WHETHER THE REGISTRANT (1) HAS FILED ALL REPORTS
REQUIRED TO BE FILED BY SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF
1934 DURING THE PRECEDING 12 MONTHS, AND (2) HAS BEEN SUBJECT TO SUCH FILING
REQUIREMENTS FOR THE PAST 90 DAYS. YES   X   NO
  INDICATE BY CHECK MARK IF DISCLOSURE OF DELINQUENT FILERS PURSUANT TO ITEM
405 OF REGULATION S-K IS NOT CONTAINED HEREIN, AND WILL NOT BE CONTAINED, TO
THE BEST OF REGISTRANT'S KNOWLEDGE, IN DEFINITIVE PROXY OR INFORMATION
STATEMENTS INCORPORATED BY REFERENCE IN PART III OF THIS FORM 10-K OR ANY
AMENDMENT TO THIS FORM 10-K. [X]
  AS OF FEBRUARY 26, 1998, 123,584,768 COMMON SHARES (NOT INCLUDING 24,199,450
SHARES HELD IN TREASURY), WERE OUTSTANDING. THE AGGREGATE MARKET VALUE OF THE
COMMON SHARES (BASED UPON THE FEBRUARY 26, 1998 CLOSING PRICE OF $25 3/4 ON
THE NEW YORK STOCK EXCHANGE) HELD BY NONAFFILIATES WAS APPROXIMATELY
$3,160,850,000. THIS INFORMATION REFLECTS THE TWO-FOR-ONE STOCK SPLIT WHICH
WAS PAID FEBRUARY 20, 1998, TO SHAREHOLDERS OF RECORD AT THE CLOSE OF BUSINESS
ON JANUARY 30, 1998.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
  PORTIONS OF THE 1997 NIPSCO INDUSTRIES, INC. ANNUAL REPORT TO SHAREHOLDERS
ARE INCORPORATED BY REFERENCE INTO PARTS I, II AND IV OF THIS REPORT.
  PORTIONS OF THE NOTICE OF ANNUAL MEETING AND PROXY STATEMENT DATED MARCH 9,
1998 FOR THE ANNUAL MEETING TO BE HELD APRIL 8, 1998 ARE INCORPORATED BY
REFERENCE INTO PART III OF THIS REPORT.
 
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<PAGE>
 
                                    PART 1
 
ITEM 1. BUSINESS
 
                       OVERVIEW OF CONSOLIDATED BUSINESS
 
  NIPSCO Industries, Inc. (Industries) is an energy/utility-based holding
company providing electric energy, natural gas and water to the public through
its six wholly-owned regulated subsidiaries (Utilities): Northern Indiana
Public Service Company (Northern Indiana); Kokomo Gas and Fuel Company (Kokomo
Gas); Northern Indiana Fuel and Light Company, Inc. (NIFL); Crossroads
Pipeline Company (Crossroads); Indianapolis Water Company (IWC); and Harbour
Water Corporation (Harbour). Industries' regulated gas and electric
subsidiaries (Northern Indiana, Kokomo Gas, NIFL and Crossroads) are referred
to as "Energy Utilities" and its regulated water subsidiaries (IWC and
Harbour) are referred to as "Water Utilities."
 
  Industries also provides non-regulated energy/utility-related products and
services including energy marketing and trading; power generation; gas
transmission, supply and storage; installation, repair and maintenance of
underground pipelines; utility line locating and marking; and related products
targeted at customer segments principally through the following wholly-owned
subsidiaries: NIPSCO Development Company, Inc. (Development); NI Energy
Services, Inc. (Services) (formerly known as NIPSCO Energy Services, Inc.);
Primary Energy, Inc. (Primary); Miller Pipeline Corporation (Miller); and SM&P
Utility Resources, Inc. (SM&P). NIPSCO Capital Markets, Inc. (Capital Markets)
handles financing for Industries and its subsidiaries, other than Northern
Indiana. These subsidiaries are referred to collectively as "Products and
Services." On March 25, 1997, Industries acquired IWC Resources Corporation
(IWCR), the holding company for the Water Utilities and five non-utility
companies including Miller and SM&P.
 
  On December 18, 1997, Industries and Bay State Gas Company (Bay State)
signed a definitive merger agreement under which Industries will acquire all
of the common stock of Bay State in a stock-for-stock transaction valued at
$40 per Bay State share. The transaction is valued at approximately $540
million. Bay State shareholders will have the option of taking up to 50
percent of the total purchase price in cash. Consummation of the merger is
subject to certain closing conditions, including the approval by the
shareholders of Bay State as well as the Securities and Exchange Commission,
the Federal Energy Regulatory Commission (FERC) and state regulatory agencies
in Massachusetts, New Hampshire and Maine. The transaction is expected to be
completed in late 1998.
 
  Bay State, one of the largest natural gas utilities in New England, provides
natural gas distribution service to more than 300,000 customers in
Massachusetts, New Hampshire and Maine. The combined gas utilities will be one
of the 10 largest natural gas distribution systems in the nation, servicing
more than 1 million gas customers. In addition, Industries and Bay State
anticipate entering into a joint marketing agreement early in 1998 that will
expand the operations of Bay State's non-regulated energy service companies.
 
  See "Segments of Business" in the Notes to Consolidated Financial Statements
and "Selected Supplemental Information" in Item 8 regarding financial
information about industry segments and classes of customers served, which
note and information are incorporated by reference.
 
                      ELECTRIC, GAS AND WATER OPERATIONS
 
ELECTRIC OPERATIONS. Northern Indiana, Industries' largest and dominant
subsidiary, is a public utility operating company incorporated in Indiana on
August 2, 1912, engaged in supplying natural gas and electric energy to the
public. It operates in 30 counties in the northern part of Indiana, serving an
area of about 12,000 square miles with a population of approximately
2,200,000. At December 31, 1997, Northern Indiana served approximately 416,300
customers with electricity.
 
                                       1
<PAGE>
 
  Northern Indiana owns and operates four coal fired electric generating
stations with net capabilities of 3,179,000 kilowatts (kw), two hydroelectric
generating plants with net capabilities of 10,000 kw, and four gas fired
combustion turbine generating units with net capabilities of 203,000 kw, for a
total system net capability of 3,392,000 kw. During the year ended December
31, 1997, Northern Indiana generated 91.8% and purchased 8.2% of its electric
requirements.
 
  Northern Indiana's 1997 electric control area peak load (the highest level
of electrical utility usage in the control area) of 3,020,920 kw, which
includes Northern Indiana, Wabash Valley Power Association, Inc. (WVPA) and
Indiana Municipal Power Agency (IMPA) for which Northern Indiana controls
interchange operations, was set on July 14, 1997. Northern Indiana's all-time
electric control area peak load of 3,161,200 kw was set on July 14, 1995.
Northern Indiana's 1997 internal peak load, which excludes WVPA and IMPA, was
2,758,920 kw set on July 14, 1997. Northern Indiana's all-time internal peak
load of 2,888,450 kw was set on August 6, 1996.
 
  Northern Indiana's electric system is interconnected with that of American
Electric Power, ComEd, Cinergy Services, Inc., Consumers Energy and Central
Illinois Public Service Company. Electric energy is purchased from, sold to,
or exchanged with various other utilities and power marketers under Northern
Indiana's power sales and open access transmission tariffs.
 
  Northern Indiana provides WVPA with transmission and distribution service,
operating reserve requirements and capacity deficiency service, and provides
IMPA with transmission service, operating reserve requirements and capacity
deficiency service, in Northern Indiana's control area. Northern Indiana also
engages in sales and services under interconnection agreements with WVPA and
IMPA.
 
  WVPA provides service to 12 Rural Electric Membership Corporations (REMC's)
located in Northern Indiana's control area. IMPA provides service to the
municipal electric system of the city of Rensselaer located in Northern
Indiana's control area.
 
  Northern Indiana and WVPA have executed a supplemental agreement for unit
peaking capacity and energy. Unit peaking capacity is the capacity used to
serve peak demand from a specific peaking generation unit. Pursuant to this
agreement, which runs through December 2001, WVPA purchases 90,000 kw of
capacity per month.
 
  Northern Indiana has the Town of Argos as a full requirement customer and
provides network integration service to seven other municipal wholesale
customers. Prior to January 31, 1998, Northern Indiana had full requirement
contracts with eight municipal wholesale customers.
 
  Northern Indiana is a member of the East Central Area Reliability
Coordination Agreement (ECAR). ECAR is one of nine regional electric
reliability councils established to coordinate planning and operations of
member companies regionally and nationally.
 
  Fuel Supply. The generating units of Northern Indiana are located at Bailly,
Mitchell, Michigan City and Schahfer Generating Stations. Northern Indiana's
13 steam generating units have a net capability of 3,179,000 kw. Coal is the
primary source of fuel for all units, except for three, which utilize natural
gas. In addition, Northern Indiana's four combustion turbine generating units
with a net capability of 203,000 kw are fired by gas. Fuel requirements for
Northern Indiana's generation for 1997 were supplied as follows:
 
<TABLE>
      <S>                                                                  <C>
      Coal................................................................ 98.7%
      Natural Gas.........................................................  1.3%
</TABLE>
 
 
                                       2
<PAGE>
 
  In 1997, Northern Indiana used approximately 8.4 million tons of coal at its
generating stations. Northern Indiana has established a normal level of coal
stock which should provide adequate fuel supply during the year under all
conditions.
 
  Annual coal requirements for Northern Indiana's electric generating units
through 2002 are estimated to range from 8.5 million tons to 9.3 million tons,
depending from year to year upon anticipated sales levels, scheduled
maintenance and other variables. These requirements are being or will be met
in part under long-term contracts as follows:
 
<TABLE>
<CAPTION>
      MILLIONS                         SULFUR
      TONS/YEAR                        CONTENT                                           EXPIRATION
      ---------                        -------                                           ----------
      <S>                              <C>                                               <C>
      1.3 (a)                           Low                                                 2001
      1.8 (b)                           Low                                                 1999
      1.0 (c)                           Low                                                 2001
      0.3                               Low                                                 2001
      0.3 (d)                           Low                                                 2000
      0.75(e)                           High                                                2003
      1.0 (f)                           High                                                2002
      0.75                              High                                                1999
</TABLE>
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(a) 1.8 million tons in 1998.
(b) 1.225 million tons in 1999. Plus or minus 10% per contract year.
(c) Plus or minus 20% per contract year.
(d) 2000-option year, can terminate December 31, 1999.
(e) Tentative new contract 0.25 million in 1998. Plus or minus 10% per
    contract year.
(f) Tentative new contract 1.5 million in 1998. Plus 20% per contract year.
    Option years in 2001 and 2002 can terminate December 31, 2000.
 
  The average cost of coal consumed in 1997 was $27.42 per ton or 15.43 mills
per kilowatt-hour (kwh) generated as compared to $27.50 per ton or 15.79 mills
per kwh generated in 1996. Northern Indiana's forecasts indicate that its coal
costs will be slightly lower over the next two years.
 
  Coal Reserves. Included in the previous table of coal contracts is a coal
mining contract with Cyprus Shoshone Coal Corporation (Cyprus) under which
Cyprus is mining Northern Indiana's coal reserves in the Cyprus mine through
the year 2001. The costs of the reserves are being recovered through the rate-
making process as such coal reserves are used to produce electricity.
 
  Fuel Adjustment Clause. Northern Indiana adjusts metered electric rates
through a fuel adjustment clause to reflect changes in fuel costs. See
"Summary of Significant Accounting Policies--Fuel Adjustment Clause" in the
Notes to Consolidated Financial Statements in Item 8, which note is
incorporated by reference.
 
GAS OPERATIONS.
 
  Northern Indiana. At December 31, 1997, Northern Indiana served
approximately 662,500 customers with gas. Northern Indiana supplies natural
gas of about 1,000 British thermal units (Btu) per cubic foot. In a 24-hour
period ended January 17, 1997, Northern Indiana's 1997 maximum day send-out
(the maximum amount of gas delivered through Northern Indiana's distribution
system to its end use customers ) was 1.6 million dekatherms (dth). Northern
Indiana's total gas send-out for 1997 was 292.6 million dth, compared to 286.1
million dth in 1996.
 
  Agreements have been negotiated with natural gas suppliers to replace former
pipeline supplier contracts pursuant to the requirements of FERC Order No. 636
(See "FERC Order No. 636" in the Notes to Consolidated Financial Statements in
Item 8, which note is incorporated by reference). Northern Indiana also has
producer agreements which allow for the purchase of gas either from gas
marketers or producers.
 
                                       3
<PAGE>
 
  Northern Indiana has firm transportation agreements with pipelines, which
allow Northern Indiana to move its gas through the pipelines' transmission
systems. In 1997, all of the gas supplied by Northern Indiana was transported
by ANR Pipeline Company (ANR), Crossroads Pipeline Company (Crossroads),
Midwestern Gas Transmission Company (Midwestern), Natural Gas Pipeline Company
of America (Natural), Panhandle Eastern Pipe Line Company (Panhandle),
Tennessee Gas Pipeline Company (Tennessee) and Trunkline Gas Company
(Trunkline). The transportation rates of Crossroads, and the transportation
and storage rates of ANR, Midwestern, Natural, Panhandle, Tennessee and
Trunkline to Northern Indiana, are subject to change in accordance with rate
proceedings filed with the FERC.
 
  Approximately 69% of Northern Indiana's 1997 gas supply was purchased on the
spot market, generally on less than 30-day agreements. The average price per
dth (including FERC Order No. 636 transition charges) in 1997 was $3.18
compared to $3.12 in 1996, and the average cost of purchased gas, after
adjustment for transition charges billed to transport customers, was $3.08 per
dth as compared to $3.02 per dth in 1996.
 
  Northern Indiana has a curtailment plan (a plan which outlines service to be
curtailed in the event of limited gas supply) approved by the Indiana Utility
Regulatory Commission (Commission). Effective on August 11, 1981, the plan
allows unrestricted gas sales by Northern Indiana. There were no firm sales
curtailments in 1997 and none are expected during 1998.
 
  Northern Indiana operates an underground gas storage field at Royal Center,
Indiana, which currently has a storage capacity of 6.75 million dth.
Withdrawals have been made in the 1997-1998 winter of up to 109,036 dth per
day. In addition, Northern Indiana has several gas storage service agreements
which make possible the withdrawal of substantial quantities of gas from other
storage facilities. All of the storage agreements have limitations on the
volume and timing of daily withdrawals. These contracts provide in the
aggregate for approximately 26.9 million dth of annual stored volume and allow
for approximately 540,000 dth of maximum daily withdrawal.
 
  Northern Indiana has a liquefied natural gas plant in LaPorte County which
is designed for peak shaving (the process of supplementing gas supply during
periods of high demand) and has the following capacities: maximum storage of 4
million dth; maximum liquefaction rate (gas to liquid) of 20,000 dth per day;
maximum vaporization rate (output to distribution system) of 300,000 dth per
day.
 
  Kokomo Gas. Kokomo Gas is a public utility operating company incorporated in
Indiana in 1917, engaged in supplying natural gas to the public. It operates
in the city of Kokomo, Indiana and the surrounding area in six counties having
a population of approximately 100,000, and served approximately 33,500
customers at December 31, 1997. The Kokomo Gas service territory is contiguous
to Northern Indiana's gas service territory.
 
  Kokomo Gas has a liquified natural gas plant in Howard County with the
following capacities: maximum storage of 400,000 mcf; maximum liquefaction
rate (gas to liquid) of 2,850 mcf per day; maximum vaporization rate (output
to distribution system) of 30,000 mcf per day. Kokomo Gas also has a gas
holder with a storage capacity of 12,000 mcf.
 
  Kokomo Gas' total gas send-out for 1997 was 8.7 million dth, compared to 8.9
million dth for 1996. Total transportation volumes for industrial customers in
1997 were 3.6 million dth, compared to 3.4 million dth in 1996. Kokomo Gas
purchased gas under term agreements from NI-TEX and NESI Energy Marketing
L.L.C., (NEM), both subsidiaries of Services, to satisfy all of its system
requirements in 1997.
 
  NIFL. NIFL is a public utility operating company incorporated in Indiana in
1906, engaged in supplying natural gas to the public. Headquartered in Auburn,
Indiana, it operates in five counties in the northeast corner of the state
having a population of approximately 66,700, and served approximately 33,400
customers at December 31, 1997. The NIFL service territory is contiguous to
Northern Indiana's gas service territory.
 
                                       4
<PAGE>
 
  NIFL's total gas send-out for 1997 was 10.8 million dth, compared to 10.9
million dth for 1996. Total transportation volumes for industrial customers in
1997 were 5.6 million dth, compared to 4.9 million dth in 1996. NIFL purchased
gas on the spot market from a number of suppliers and also under term
agreements from NI-TEX and NEM to satisfy all of its system requirements in
1997.
 
  Crossroads. Crossroads is a natural gas pipeline company which was approved
by FERC to operate as an interstate pipeline in May 1995. Crossroads owns and
operates a 201-mile, 20-inch pipeline that extends from Schererville, Indiana,
in the northwestern corner of the state, where it takes delivery from the
interstate pipeline facilities of Natural Gas Pipeline Company of America, to
Cygnet, Ohio, located in northwestern Ohio, where it interconnects with
facilities owned by Columbia Gas Transmission Corporation. In December 1997,
Crossroads announced plans to construct a 20-mile extension of its pipeline
facility in Ohio to a point of interconnection with a unit of Consolidated
Natural Gas Company.
 
  Gas Cost Adjustment Clause. Metered gas rates are adjusted to reflect the
cost of purchased gas, contracted gas storage and storage transportation
charges. See "Summary of Significant Accounting Policies--Gas Cost Adjustment
Clause" in the Notes to Consolidated Financial Statements in Item 8, which
note is incorporated by reference.
 
WATER OPERATIONS. The Water Utilities supply water for residential, commercial
and industrial uses and for fire protection service in Indianapolis, Indiana
and surrounding areas. The territory served by the Water Utilities covers an
area of approximately 309 square miles in six counties of central Indiana and
the Water Utilities served approximately 246,600 customers at December 31,
1997.
 
  The combined maximum daily capacity of the Water Utilities' treatment
plants, together with the maximum daily capacity of the three primary well
fields, is 235 million gallons per day (MGD). During 1997, the average daily
consumption was 127 MGD and the maximum daily consumption was 201 MGD.
 
  The principal sources of IWC's present water supply are the White River,
which flows through Indianapolis from north to south and is supplemented by
Morse Reservoir on a tributary, Cicero Creek; Fall Creek, which flows through
Indianapolis from the northeast and is supplemented by Geist Reservoir; the
city of Indianapolis' Eagle Creek Reservoir, located on Eagle Creek in
northwest Marion County, from which water is purchased under a long-term
contract; Geist Well Field, a ground water supply located downstream of Geist
Reservoir; and South Well Field located in southern Marion and northern
Johnson Counties.
 
  The three large surface reservoirs are essential to providing an adequate
supply during dry periods. Two are used to supplement low stream flows in the
White River and Fall Creek, respectively, and water is drawn directly from the
third. The reservoirs are designed to maintain an adequate water supply in the
event of a repetition of the worst two-year drought ever recorded in the
Indianapolis area.
 
  The theoretical dependable supply from the three combined reservoirs
represents approximately 65% of the total dependable supply available to IWC
with the balance coming from natural stream flow and wells. Wells constitute
the source of supply for Harbour.
 
  The Water Utilities have aquifer protection plans for the Geist and South
Well Fields. Once fully developed, the Geist Well Field will produce 12 to 15
MGD while the South Well Field will produce 40 to 50 MGD. The protection plans
will guide the Water Utilities' development of these newest major sources of
supply, and result in land use plans to protect the aquifer systems from
potential contamination sources.
 
                                       5
<PAGE>
 
                  PRODUCTS AND SERVICES OF OTHER SUBSIDIARIES
 
  CAPITAL MARKETS. Capital Markets serves as the funding agent for ventures of
Industries and its subsidiaries other than Northern Indiana. As of December
31, 1997, Capital Markets had $17.0 million in commercial paper outstanding,
having a weighted average interest rate of 7.00%. Capital Markets has a $150
million revolving credit agreement, which provides short-term financing
flexibility to Industries and also serves as the back up instrument for the
commercial paper program. As of December 31, 1997, there were no borrowings
outstanding under this agreement. Capital Markets also has $130 million of
money market lines of credit. As of December 31, 1997, $20.1 million of
borrowings were outstanding under these lines of credit.
 
  The obligations of Capital Markets are subject to a Support Agreement
between Industries and Capital Markets, under which Industries has committed
to make payments of interest and principal on Capital Markets' obligations in
the event of a failure to pay by Capital Markets. Restrictions in the Support
Agreement prohibit recourse on the part of Capital Markets' creditors against
the stock and assets of Northern Indiana. Under the terms of the Support
Agreement, in addition to the cash flow of cash dividends paid to Industries
by any of its consolidated subsidiaries, the assets of Industries, other than
the stock and assets of Northern Indiana, are available as recourse for the
benefit of Capital Markets creditors. The carrying value of the assets of
Industries, other than the assets of Northern Indiana, reflected in the
consolidated financial statements of Industries, was approximately $1.3
billion at December 31, 1997.
 
IWCR. IWCR is a holding company for the Water Utilities and five other wholly-
owned subsidiaries. The five wholly-owned subsidiaries are SM&P, Miller,
Waterway Holdings, Inc. (WWH), Utility Data Corporation (UDC) and IWC
Services, Inc. (IWCS). Additionally, IWCR is a majority partner in the White
River Environmental Partnership (WREP) through IWCS.
 
  SM&P performs underground utility locating and marking services in Indiana
and 10 other states. SM&P performed approximately 4.2 million locates and had
operating income of $2.6 million for the period of April 1997 through December
1997, the period following the acquisition of IWCR. Miller installs, repairs
and maintains underground pipelines used in gas, water and sewer transmission
and distribution systems. Operating income for Miller for April 1997 through
December 1997 was $6.2 million.
 
DEVELOPMENT. Development makes various investments, including real estate and
venture capital investments. Development is an 85% shareholder in Elm Energy
and Recycling (UK) Ltd. (Elm Energy), which owns and operates a tire-fueled
electric generating plant in Wolverhampton, England. See "Resolution of Elm
Energy and Recycling (UK) Ltd. Litigation" in the Notes to Consolidated
Financial Statements in Item 8, which note is incorporated by reference.
 
  In 1997, Development invested in multiple-family residential housing
developments in South Bend. Development has additional projects within the
Utilities' service territories and is considering additional projects within
those territories. At December 31, 1997, Development has $30.1 million of
investments, at equity, relating to affordable housing projects. These
projects are part of the continued commitment by Industries to provide high
quality, energy efficient, affordable housing to the residents of a variety of
geographic and economic regions served by the Utilities.
 
SERVICES. Services coordinates the energy-related diversification efforts of
Industries. Services has nine active wholly-owned subsidiaries, interests in
three limited liability companies and a limited partnership.
 
  NESI Energy Marketing L.L.C. (NEM). NEM, a limited liability company,
provides natural gas sales and management services to industrial and
commercial customers and is also actively
 
                                       6
<PAGE>
 
engaged in energy trading activities. During 1997, NEM had sales of
approximately 135.8 million dth.
 
  NESI Power Marketing, Inc. (NPMI). NPMI, a wholly-owned subsidiary of
Services, is involved in wholesale power trading activities. During 1997, NPMI
had sales of approximately 7.5 million megawatt hours (mwh).
 
  NESI Integrated Energy Resources, Inc. (NIERI). NIERI, a wholly-owned
subsidiary of Services, participates in residential and small commercial gas
unbundling pilot programs. During 1997, NIERI participated in pilot programs
in Grand Rapids, Michigan, East Ohio and South Bend, Indiana.
 
  NIPSCO Energy Services Canada Limited (NESCL). NESCL, a wholly-owned
subsidiary of Services, is a Canadian subsidiary formed to hold NESI Canadian
investments and companies. In January 1998, NESCL sold its 50% interest in
FuelMaker Corporation, a manufacturer of vehicle fueling equipment. NESCL owns
Southlake Energy, Inc., (SLAKE) a Canadian oil and gas exploration and
production company. As of December 31, 1997, SLAKE had invested $26.7 million
in Canadian exploration and development projects with estimated proved
reserves of 1.3 million barrels of oil and 26.9 Bcf of natural gas.
 
  NIPSCO Fuel Company, Inc. (Fuel). Fuel, a wholly-owned subsidiary of
Services, primarily invests in oil and gas exploration and production
properties with activities concentrated in the mid-continent region of the
United States. In January 1997, Fuel sold its partnership interest in certain
offshore properties to SOCO Offshore, Inc. Effective January 1, 1997, Fuel and
four other investors formed Bristol. Fuel contributed properties with a
carrying amount of $21.7 million and holds a 64 percent interest in Bristol.
 
  NI-TEX, Inc. (NI-TEX) NI-TEX, a wholly-owned subsidiary of Services, is an
intrastate natural gas transmission and supply company in Texas providing gas
sales, transportation and storage services. NI-TEX provides gas supply to
Northern Indiana, Kokomo Gas and NIFL under spot and/or term contracts. NI-
TEX, through joint ventures with industry partners, also owns natural gas
transmission and storage facilities located in Texas. Its Laredo-Nueces
pipeline affiliate transported 15.2 Bcf of natural gas in 1997. Its Mid-Tex
Gas Storage Company affiliate operates a salt dome gas storage facility with
an operating capacity of 5.7 Bcf.
 
  NESI Energy Services Company (NESCO). NESCO, a wholly-owned subsidiary of
Services, provides energy solutions which enhance competitiveness through cost
reductions, modernizing infrastructure and improving cost accountabilities.
 
  Parkway Engineering and Distributing Company, Inc. (PEDCO). PEDCO, a wholly-
owned subsidiary of Services, markets energy efficient lighting and lighting
solutions.
 
  Green Fuels, Inc. (Greenfuels). Greenfuels, a wholly-owned subsidiary of
Services, sells compressed natural gas (CNG) and liquefied natural gas (LNG)
for vehicular fuel. Greenfuels provides conversion kits and assists in or
performs the conversion of gasoline driven vehicles to CNG in order to expand
the market base.
 
  Triumph Natural Gas, Inc. (Triumph). Triumph, a majority-owned subsidiary of
Services, is in the final stages of liquidation. Services, as well as certain
affiliates and officers, were defendants in a lawsuit brought by certain
shareholders and former members of the Board of Directors of Triumph. An out
of court settlement was reached in the fourth quarter of 1997.
 
PRIMARY. Primary arranges energy-related projects for large energy-intensive
facilities and has entered into certain commitments in connection with these
projects. Primary offers expertise to large energy customers in managing the
engineering, construction, operation and maintenance of these energy-related
projects. Primary is the parent of the following subsidiaries: Harbor Coal
 
                                       7
<PAGE>
 
Company (Harbor Coal); North Lake Energy Corporation (North Lake); Lakeside
Energy Corporation (LEC); Portside Energy Corporation (Portside); and
Cokenergy, Inc. (CE).
 
  Harbor Coal has invested in a partnership to finance, construct, own and
operate a $65 million pulverized coal injection facility which began
commercial operation in August 1993. The facility receives raw coal,
pulverizes it and delivers it to Inland Steel Company (Inland Steel) for use
in the operation of its blast furnaces. Harbor Coal is a 50% partner in the
project with an Inland Steel affiliate. Industries has guaranteed the payment
and performance of the partnership's obligations under a sale and leaseback of
a 50% undivided interest in the facility.
 
  North Lake has entered into a lease for the use of a 75-megawatt energy
facility located at Inland Steel. The facility uses steam generated by Inland
Steel to produce electricity which is delivered to Inland Steel. The facility
began commercial operation in May 1996. Industries has guaranteed North Lake's
obligations relative to the lease and certain obligations to Inland Steel
relative to the project.
 
  LEC has entered into a lease for the use of a 161-megawatt energy facility
located at USS Gary Works. The facility processes high-pressure steam into
electricity and low-pressure steam for delivery to USX Corporation-US Steel
Group. A fifteen-year tolling agreement with US Steel commenced on April 16,
1997 when the facility was placed in commercial operation. Capital Markets
guarantees LEC's security deposit obligations relative to the lease and
certain limited LEC obligations to the lessor.
 
  Portside has entered into an agreement with National Steel Corporation
(National) to construct and operate a new 63-megawatt energy facility at
National's Midwest Division to process natural gas into electricity, process
steam and heated water to be provided to National for a fifteen-year period.
Portside has entered into a lease for use of the facility. Industries has
guaranteed certain Portside obligations to the lessor. Construction of the
project began in June 1996 and the facility began commercial operation on
September 26, 1997.
 
  CE has entered into a fifteen-year service agreement and a related fifteen-
year fuel supply agreement with Inland Steel and the Indiana Harbor Coke
Company, LP (Harbor Coke). These agreements provide that CE will construct and
operate a new energy facility at Inland Steel's Indiana Harbor Works to scrub
flue gases and recover waste heat from the coke facility being constructed by
Harbor Coke and produce process steam and electricity from the recovered heat
which will be delivered to Inland Steel. CE intends to lease these facilities,
once constructed, from a third party. Additionally, CE has entered into an
interim agreement, which expires when the lease is established with the third
party lessor, under which CE is acting as agent to design, construct and start
up the facilities. Capital Markets anticipates guaranteeing certain CE
obligations relative to the anticipated lease. Construction of the project
began in January 1997. The facility is scheduled to be operational in June
1998.
 
  Primary has advanced approximately $107 million and $42 million, at December
31, 1997 and December 31, 1996, respectively, to the lessors of the energy
related projects discussed above.
 
  Primary is evaluating other potential projects with Northern Indiana
customers as well as with potential customers outside of Northern Indiana's
service territory. Projects under consideration include those which use
industrial by-product fuels and natural gas to produce electricity.
 
                                  REGULATION
 
HOLDING COMPANY ACT. Industries is exempt from registration with the
Securities and Exchange Commission (SEC) as a "registered holding company"
under the Public Utility Holding Company Act of 1935, as amended (Holding
Company Act). However, prior approval of the SEC is required
 
                                       8
<PAGE>
 
under the Holding Company Act if Industries proposes to acquire, directly or
indirectly, any securities of other electric or gas public utility companies.
There may also be limits on the extent to which Industries and its non-utility
subsidiaries can enter into businesses which are not "functionally related" to
the electric and gas businesses without raising questions about Industries'
exempt status under the Holding Company Act. SEC guidelines established in
prior decisions of the SEC require Industries to remain engaged primarily and
predominately in the electric and gas businesses and to limit the size of its
activities outside of such businesses relative to Industries as a whole.
 
  Industries has no present intention of becoming a registered holding company
subject to regulation by the SEC under the Holding Company Act. Industries
will file an application with the SEC to retain its exempt status under the
Holding Company Act upon the consummation of the merger with Bay State,
assuming the acquisition of Bay State is approved by the shareholders of Bay
State, the SEC, the FERC and state regulatory agencies in Massachusetts, New
Hampshire and Maine.
 
INDIANA UTILITY REGULATORY COMMISSION. Industries is not subject to regulation
by the Commission as long as it is not a public utility. Industries and its
non-utility subsidiaries are subject to certain reporting and information
access requirements under Indiana law. Furthermore, certain contracts between
Industries or its non-utility subsidiaries and the Energy Utilties must be
filed with the Commission.
 
  The Utilities are subject to regulation by the Commission as to rates,
service, accounts, issuance of securities and in other respects. The Utilities
are also subject to limited regulation by local public authorities.
 
FEDERAL ENERGY REGULATORY COMMISSION. Industries is not regulated by the FERC,
but any subsidiary, including the Energy Utilities, that engages in FERC
jurisdictional sales or activities is subject to such regulation.
 
  Northern Indiana's restructuring under Industries was approved by a February
29, 1988 order of the FERC. The order is conditioned upon the FERC's
continuing authority to examine the books and records of Industries and its
subsidiaries, upon further order of the FERC, and to make such supplemental
orders, for good cause, as it may find necessary or appropriate regarding the
restructuring.
 
  In 1997, about 4% of Northern Indiana's electric revenues were derived from
electric service it furnished at wholesale in interstate commerce to other
utility companies, municipalities and WVPA (see "Item 1. Business-Electric
Operations" regarding WVPA). Northern Indiana's wholesale rates and operations
are subject to the jurisdiction of the FERC. FERC jurisdiction does not extend
to the issuance of securities by Northern Indiana, which are regulated by the
Commission. The FERC declared Northern Indiana, Kokomo Gas and NIFL exempt
from the provisions of the Natural Gas Act.
 
                                 RATE MATTERS
 
  For information regarding the Energy Utilities' gas rates and gas transition
costs, see "FERC Order No. 636" in the Notes to Consolidated Financial
Statements in Item 8, which note is incorporated by reference.
 
  Northern Indiana filed a petition for an Alternative Regulatory Plan (ARP)
with the Commission on November 29, 1995. Following negotiation and settlement
with major intervenors, Northern Indiana submitted a modified ARP to the
Commission on May 9, 1997. In its modified
 
                                       9
<PAGE>
 
ARP, Northern Indiana proposed to implement new rates and services that would
include, among other things, further unbundling of services for additional
customer classes, increased customer choice for sources of natural gas supply,
negotiated services and prices, an incentive gas cost mechanism and a price
protection program. On October 8, 1997, the Commission issued an order
approving, in all respects, the modified ARP which became effective November
1, 1997. The first pilot program was launched in January 1998 and the first
gas volumes will flow under this program by April 1, 1998. Significantly, the
Commission order allows NIERI, a subsidiary of Services and the natural gas
marketing affiliate of Northern Indiana, to participate as a supplier in this
pilot and in future expansions of supplier choice to other customers on the
Northern Indiana system. ERI Services, Inc. and Enron Capital and Trade
Resources Corp. filed Petitions for Rehearing of the Commission Order, and
during the first quarter of 1998, the Commission denied such Petitions.
 
  On November 14, 1997, IWC petitioned the Commission for approval of new
water rates and charges. IWC seeks to increase revenues by approximately $11.9
million, representing a 15.3% increase over test year revenues. Currently, IWC
is attempting to negotiate a settlement with the Office of Utility Consumer
Counselor resulting in a three step phased-in rate increase. If a settlement
cannot be reached, a final hearing on the case is scheduled for June 25, 1998.
 
                                  COMPETITION
 
ELECTRIC. The electric energy generation, transmission and distribution
business is in a period of fundamental change in the manner in which customers
obtain, and energy suppliers provide, energy services. These changes are
attributable to changes in technology, the relaxation of regulatory barriers
to utilities' respective service territories and efforts to change the manner
in which electric utilities are regulated. Federal law and regulations have
been amended to provide for open transmission system access, and various
states are considering, or have adopted, new regulatory structures to allow
access by some or all customers to electric suppliers in addition to their
local electric utility.
 
  Currently, electric service territories within the State of Indiana are
assigned to the existing suppliers, and boundaries of new territories outside
existing municipalities are assigned to the utility having the nearest
existing electric distribution lines. Only existing municipal electric
utilities may expand their service areas and then only into areas that have
been annexed by the municipality, subject to the approval of the Commission
and certain other conditions. In municipalities where Northern Indiana renders
electric service to the general public as a public utility, no other utility
renders electric or gas service, except in Angola, DeMotte, Rome City, Wanatah
and Waterloo. In certain municipalities where electric service is supplied by
Northern Indiana, NIFL provides competing gas utility service. In localities
where Northern Indiana renders gas service only, it competes with electric
utilities, municipal or private, for the business for which they render
alternative electric service.
 
  Kokomo Gas and NIFL compete with other electric utilities serving customers
in their respective service territories.
 
  In both January 1997 and January 1998, legislation was introduced in the
Indiana General Assembly addressing electric utility competition and
deregulation. The proposed legislation was not adopted but similar legislation
may be reintroduced in the future. It is not possible to predict the ultimate
effect which competition, subsequent to the passage of such legislation, would
have on Industries' future earnings. See "Competition" in the Management's
Discussion and Analysis of Financial Condition and Results of Operations,
which is incorporated by reference (see Exhibit 13).
 
                                      10
<PAGE>
 
GAS. As a result of FERC Order No. 636, Northern Indiana is also subject to
competition for gas sales to industrial customers through the ability of these
customers, under Northern Indiana's rate provisions, to purchase gas directly
from suppliers other than Northern Indiana and have Northern Indiana transport
the gas to them. During 1997, gas transportation represented 55% of Northern
Indiana's total gas send-out.
 
  Indiana law requires Commission approval before a gas customer of a utility
may bypass the utility and make other arrangements for gas service. Any entity
which transports gas from outside Indiana for direct sale or delivery to
itself or other end-users within the state will be considered a public utility
and must obtain a necessity certificate from the Commission in order to engage
in such activities.
 
  WATER. The Water Utilities conduct operations, subject to regulation by the
Commission, under permit and franchise rights. Under such rights, the Water
Utilities may lay, maintain and operate mains and conduits in public streets
and ways throughout the area served. The rights granted to the Water Utilities
are not exclusive. Competitors include various municipal water utilities, as
well as privately owned water utilities, some of which purchase water from the
Water Utilities. As the Indianapolis metropolitan area has expanded to include
surrounding communities or previously rural areas, the Water Utilities have
faced competition for new customers from town or rural water utilities.
 
                                   EMPLOYEES
 
  Industries had 5,984 employees at December 31, 1997. Of these employees,
2,940 are represented by various local unions. The March 1997 acquisition of
IWCR increased employees by 2,074, including 1,110 employees at SM&P, 540
employees at Miller and 355 at the Water Utilities.
 
                             ENVIRONMENTAL MATTERS
 
  The Utilities have an ongoing program to remain aware of laws and
regulations involved with hazardous waste and other environmental matters. The
Utilities intend to continue to evaluate their facilities and properties with
respect to these rules and identify any sites that would require corrective
action. The Utilities have recorded a reserve of approximately $20 million to
cover probable corrective actions as of December 31, 1997; however,
environmental regulations and remediation techniques are subject to future
change. The ultimate cost could be significant, depending on the extent of
corrective actions required. Based upon investigations and management's
understanding of current laws and regulations, the Utilities believe that any
corrective actions required, after consideration of insurance coverages and
contributions from other potentially responsible parties, will not have a
significant impact on the results of operations or financial position of
Industries. It is not possible for Industries to predict the scope,
enforceability or financial impact of other environmental regulations or
standards which may be established in the future.
 
  The Utilities are subject to regulation with regard to environmental matters
by various federal, state and local authorities. The Utilities cannot forecast
the effect of all such regulation upon their generation, transmission or other
facilities, or their operations. The Utilities intend to comply with all
applicable governmental requirements and have adopted an environmental policy
that fosters the pursuit of proactive environmental programs and management.
 
  The application of federal and state restrictions to protect the
environment, including but not limited to those described below, involves or
may involve review, certification or issuance of permits by various federal,
state and local authorities. Such restrictions, particularly in regard to
emissions into the air and water, and disposal of solid wastes, may impact the
operation of the Utilities' facilities, and may also require substantial
investment.
 
                                      11
<PAGE>
 
  Industries' total capital expenditures from January 1, 1993, through December
31, 1997 for pollution control facilities were approximately $149 million and
were financed in part by the sale of Northern Indiana's Pollution Control Notes
and Bonds-Jasper County. Industries anticipates expenditures of approximately
$15 million for pollution control equipment in the 1998-2002 period which
includes anticipated expenditures of approximately $6 million in 1998 and $9
million in 1999. See "Environmental Matters" in the Notes to Consolidated
Financial Statements in Item 8, which note is incorporated by reference.
 
                                YEAR 2000 COSTS
 
  Industries has several major projects underway to modify portions of its
systems for proper functioning in the year 2000. These include a project to
evaluate Industries' proprietary software and to work with each of Industries'
software vendors to assure that appropriate steps are being take to mitigate
the problem in each vendor's software or, in some cases, to replace software
with year 2000 compliant software; a project to identify and mitigate problems
wherever they exist in Industries' systems (ranging from equipment used in
Northern Indiana's generating stations to Industries' phone system that have
date information within them); and an initiative to assure that each entity
that electronically receives information from Industries or sends information
to Industries is aware of the steps that Industries is taking and is taking
appropriate steps of its own to address the problem. Consistent with its plan,
Industries expects to be year 2000 compliant with some systems as early as
third quarter 1998 and other systems no later than the third quarter of 1999.
 
  Industries estimates that costs to become year 2000 compliant will be
approximately $10-$15 million, including acquisition costs of new systems which
will be capitalized consistent with Industries' accounting policies. Costs
related to maintenance or modification of Industries' systems have been and
will be expensed as incurred. Industries does not anticipate that the related
costs will have a material impact on its results of operations, nor does
Industries currently anticipate any disruption of its ability to deliver
service as a result of the year 2000 issue.
 
                           FORWARD LOOKING STATEMENTS
 
  This report contains forward looking statements within the meaning of the
securities laws. Industries cautions that, while it believes such statements to
be based on reasonable assumptions and makes such statements in good faith,
there can be no assurance that the actual results will not differ materially
from such assumptions or that the expectations set forth in the forward looking
statements derived from such assumptions will be realized. Investors should be
aware of important factors that could have a material impact on future results.
These factors include, but are not limited to, weather, the federal and state
regulatory environment, the economic climate, regional, commercial, industrial
and residential growth in the service territories served by Industries'
subsidiaries, customers' usage patterns and preferences, the speed and degree
to which competition enters the utility industries, the timing and extent of
changes in commodity prices, changing conditions in the capital and equity
markets and other uncertainties, all of which are difficult to predict, and
many of which are beyond the control of Industries.
 
ITEM 2. PROPERTIES.
 
  OVERVIEW. The physical properties of the Utilities are located in the State
of Indiana, except for Crossroads which owns a 202-mile interstate natural gas
pipeline running from northwest Indiana to Cygnet, Ohio.
 
                                       12
<PAGE>
 
  The significant properties owned by other subsidiaries of Industries are: the
Southlake Complex, a 325,000 square foot office building located in
Merrillville, Indiana, owned by Development; a 36-mile intrastate natural gas
pipeline, located in southern Texas, half-owned by NI-TEX; interests in oil and
gas exploration and production properties, owned by Fuel; a golf course and
surrounding residential development in Chesterton, Indiana, owned by Lake Erie
Land Company (a wholly-owned subsidiary of Development); a waste-to-energy
generating plant in Wolverhampton, England, owned by Elm Energy; commercial
real estate joint ventures, half-owned by KOGAF Enterprises (a wholly-owned
subsidiary of Development) located in Kokomo, Indiana; interests in oil and gas
producing properties in Canada owned by SLAKE; and parcels of land for
development owned by WWH.
 
  ELECTRIC. Northern Indiana owns and operates four coal fired electric
generating stations with net capabilities of 3,179,000 kw, two hydroelectric
generating plants with net capabilities of 10,000 kw and four gas fired
combustion turbine generating units with net capabilities of 203,000 kw, for a
total system net capability of 3,392,000 kw.
 
  Northern Indiana has 292 substations with an aggregate transformer capacity
of 23,030,500 kva. Its transmission system with voltages from 34,500 to 345,000
consists of 3,052 circuit miles of line. The electric distribution system
extends into 21 counties and consists of 7,835 circuit miles of overhead and
1,423 cable miles of underground primary distribution lines operating at
various voltages from 2,400 to 12,500 volts. Northern Indiana has distribution
transformers having an aggregate capacity of 11,422,999 kva and 438,590
electric watt-hour meters.
 
  GAS. Northern Indiana has an underground storage field at Royal Center and a
liquefied natural gas plant in LaPorte County and Kokomo Gas has a liquefied
natural gas plant in Howard County, all of which are described under "Item 1.
Business-Gas Operations." Northern Indiana has 13,368 miles of gas mains,
Kokomo Gas has 752 miles of gas mains and NIFL has 809 miles of gas mains.
 
  WATER. The Water Utilities' properties consist of land, easements, rights
(including water rights), buildings, reservoirs, canal, wells, supply lines,
purification plants, pumping stations, transmission and distribution pipes,
mains and conduits, meters and other facilities used for the collection,
purification and storage of water, and the distribution of water to its
customers. The water systems extend from well fields and raw water reservoirs
on Cicero Creek and Fall Creek, north and northeast of Indianapolis, and from
the intake structure in Indianapolis' Eagle Creek Reservoir, northwest of
Indianapolis, to the service connections of the ultimate consumers. The Water
Utilities have 27,469 fire hydrants and 3,148 miles of water mains.
 
  CHARACTER OF OWNERSHIP. Substantially all of the properties of Northern
Indiana and IWC are subject to the lien of their respective First Mortgage
Indentures. The principal offices and properties of Industries and its
subsidiaries are held in fee and are free from other encumbrances, subject to
minor exceptions, none of which is of such a nature as to impair substantially
the usefulness of such properties. Many of the offices in various communities
served are occupied by subsidiaries of Industries under leases. All properties
are subject to liens for taxes, assessments and undetermined charges (if any)
incidental to construction, which it is Industries' practice regularly to pay,
as and when due, unless contested in good faith. In general, the electric, gas
and water lines and mains are located on land not owned in fee but are covered
by necessary consents of various governmental authorities or by appropriate
rights obtained from owners of private property. Industries does not, however,
generally have specific easements from the owners of the property adjacent to
public highways over, upon or under which its electric, gas and water lines and
mains are located. At the time each of the principal properties was purchased a
title search was made. In general, no examination of titles as to rights-of-way
for electric, gas and water lines and mains was made, other than examination,
in certain cases, to verify the grantors' ownership and the lien status
thereof.
 
                                       13
<PAGE>
 
ITEM 3. LEGAL PROCEEDINGS.
 
  Industries and its subsidiaries are parties to various pending proceedings,
including suits and claims against them for personal injury, death and property
damage. Such proceedings and suits, and the amounts involved are routine
litigation and proceedings for the kinds of businesses conducted by Industries
and its subsidiaries, except as described under the captions "NESI Energy
Marketing Canada Ltd. Litigation," and "Environmental Matters" in the Notes to
Consolidated Financial Statements in Item 8, which notes are incorporated by
reference. No other material legal proceedings against Industries or its
subsidiaries are pending or, to the knowledge of Industries, contemplated by
governmental authorities or other parties.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
 
  None
 
SUPPLEMENTAL ITEM--EXECUTIVE OFFICERS OF THE REGISTRANT.
 
<TABLE>
<CAPTION>
                   YEARS WITH
     NAME      AGE INDUSTRIES          OFFICE(S) HELD IN PAST 5 YEARS
     ----      --- ----------          ------------------------------
<S>            <C> <C>        <C>
Gary L.        58     8       Chairman, President and Chief Executive Officer
 Neale**......                since March 1993.
Stephen P.     54     10      Executive Vice President, Chief Financial Officer
 Adik.........                and Treasurer since April 1994. Senior Vice
                              President, Chief Financial Officer and Treasurer
                              prior thereto.
Patrick J.     56     36      Executive Vice President and Chief Operating
 Mulchay......                Officer at Northern Indiana* since July 1996.
                              Executive Vice President and Chief Operating
                              Officer of Electric Operations at Northern
                              Indiana* from January 1994 to June 1996. Vice
                              President and General Manager of Gas Operations
                              at Northern Indiana* prior thereto.
Jeffrey W.     52     10      Executive Vice President and Chief Operating
 Yundt........                Officer of Energy Services since July 1996.
                              Executive Vice President and Chief Operating
                              Officer of Gas Services from January 1994 to June
                              1996. Vice President prior thereto.
Joseph L.      61     10      Senior Vice President of Major Accounts since
 Turner, Jr...                July 1996. Group Vice President at Northern
                              Indiana* from January 1996 to June 1996. Group
                              Vice President of Industrial Marketing and
                              Economic Development of Northern Indiana* from
                              April 1994 to December 1995. Vice President, and
                              Vice President and General Manager of Corporate
                              Marketing at Northern Indiana* prior thereto.
David A. Kel-  59     6       Vice President of Income Tax Management, and
 ly...........                Executive Vice President and Chief Financial
                              Officer at IWCR* since April 1997. Vice President
                              of Administrative Services at NIPSCO Industries
                              Management Services Company* (NIMSC) from January
                              1997 to March 1997. Vice President of Real Estate
                              and Taxes at Northern Indiana* prior thereto.
</TABLE>
 
 
                                       14
<PAGE>
 
<TABLE>
<CAPTION>
                   YEARS WITH
     NAME      AGE INDUSTRIES          OFFICE(S) HELD IN PAST 5 YEARS
     ----      --- ----------          ------------------------------
<S>            <C> <C>        <C>
James K.       44    3        Senior Vice President of Commercial Operations of
 Abcouwer.....                Northern Indiana* since February 1998. Vice
                              President and General Manager of Customer Service
                              and Distribution from July 1996 to January 1998
                              at Northern Indiana*. Vice President of Gas
                              Supply at Northern Indiana from June 1994 to June
                              1996. Vice President of Natural Gas at GSC Energy
                              from August 1993 to June 1994. Director of
                              Natural Gas at Tenneco Gas prior thereto.
James T. Mor-  54    1 (a)    Chairman of the Board, President and Chief
 ris**........                Executive Officer of IWC Resources Corporation*.
Owen C. John-  51    8        Vice President of Human Resources at NIMSC* since
 son, Jr......                July 1996. Prior thereto, Vice President of Human
                              Resources.
Mark T.        43    20       Vice President of Marketing and Sales at NIMSC*
 Maassel......                since July 1996. Vice President of Electric
                              Service and Sales at Northern Indiana* from April
                              1994 to March 1997. Director of Northern Central
                              Region at Northern Indiana* prior thereto.
Arthur A. Pa-  50    28       Controller of NIMSC* since July 1996. Prior
 quin.........                thereto, Controller of Northern Indiana*.
Francis P.     53    17       Treasurer of Northern Indiana* and Treasurer of
 Girot, Jr....                NIMSC* since July 1996.
</TABLE>
- --------
*Subsidiary of Industries.
**Also a Director.
(a) Industries acquired IWCR in March 1997.
 
  The terms of office of executive officers of Industries are established by
Industries' Board of Directors (Board) each year, and each officer serves until
the next annual meeting of the Board and/or until his/her successor is duly
elected. Throughout the past five years, each of the executive officers of
Industries has been continuously in the business of Industries or its
subsidiaries, except for Mr. Abcouwer .
 
                                    PART II
 
ITEM 5. MARKET FOR COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.
 
  Industries' common shares are listed and traded on the New York, Chicago and
Pacific exchanges. The table below indicates the high and low sales price of
Industries' common shares, on the composite tape, during the periods indicated.
On December 16, 1997, the Board of Directors authorized a two-for-one split of
Industries' common stock. Shareholders received one additional common share for
each common share held. The stock split was paid February 20, 1998, to
shareholders of record at the close of business on January 30, 1998. The common
share cash dividend paid February 20, 1998 was payable on pre-split common
shares. The sales prices and common dividends reported have been restated to
reflect the two-for-one stock split.
 
<TABLE>
<CAPTION>
                                                   1997              1996
                                             ----------------- -----------------
                                               HIGH     LOW      HIGH     LOW
                                             -------- -------- -------- --------
      <S>                                    <C>      <C>      <C>      <C>
      First Quarter......................... 20 1/8   19       19 9/16  17 15/16
      Second Quarter........................ 21 1/8   19 7/16  20 1/8   17 5/8
      Third Quarter......................... 21 9/32  20 11/32 20 1/8   17 7/8
      Fourth Quarter........................ 24 15/16 21 1/16  19 15/16 17 15/16
</TABLE>
 
  As of February 26, 1998, Industries had 37,441 common shareholders of record.
 
                                       15
<PAGE>
 
  The policy of the Board has been to declare dividends on a quarterly basis
payable on or about the 20th day of February, May, August and November,
Industries paid quarterly common dividends of $0.21 per share during 1996 and
quarterly common dividends of $0.225 per share during 1997. At its December 16,
1997 meeting, the Board increased the quarterly common dividend to $0.24 per
share, payable February 20, 1998.
 
  Holders of Industries' common shares are entitled to receive dividends when,
as and if declared by the Board out of funds legally available therefor.
Although the Board currently intends to consider the payment of regular
quarterly cash dividends on common shares, the timing and amount of future
dividends will depend on the earnings of Northern Indiana and other
subsidiaries, their financial condition, cash requirements, any restrictions in
financing agreements and other factors deemed relevant by the Board. During the
next few years, it is expected that the great majority of earnings available
for distribution of dividends will depend upon dividends paid to Industries by
Northern Indiana.
 
  The following limitations on payment of dividends and issuance of preferred
stock apply to Northern Indiana:
 
  When any bonds are outstanding under its First Mortgage Indenture, Northern
Indiana may not pay cash dividends on its stock (other than preferred or
preference stock) or purchase or retire common shares, except out of earned
surplus or net profits computed as required under the provisions of the
maintenance and renewal fund. At December 31, 1997, Northern Indiana has
approximately $146.3 million of retained earnings (earned surplus) available
for the payment of dividends. Future common share dividends by Northern Indiana
will depend upon adequate retained earnings, adequate future earnings and the
absence of adverse developments.
 
  So long as any shares of Northern Indiana's cumulative preferred stock are
outstanding, no cash dividends shall be paid on its common shares in excess of
75% of the net income available therefore for the preceding calendar year
unless the aggregate of the capital applicable to stocks subordinate as to
assets and dividends, would equal or exceed 25% of the sum of all obligations
evidenced by bonds, notes, debentures or other securities, plus the total
capital and surplus. At December 31, 1997, the sum of the capital applicable to
stocks subordinate to the cumulative preferred stock plus the surplus was equal
to 42% of the total capitalization including surplus.
 
  In connection with the foregoing discussion, see "Common Share Dividend" in
the Notes to Consolidated Financial Statements in Item 8, which note is
incorporated by reference.
 
ITEM 6. SELECTED FINANCIAL DATA.
 
<TABLE>
<CAPTION>
                                        YEAR ENDED DECEMBER 31,
                         ------------------------------------------------------
                            1997       1996       1995       1994       1993
                         ---------- ---------- ---------- ---------- ----------
<S>                      <C>        <C>        <C>        <C>        <C>
Operating revenues
 (000's)................ $2,586,541 $1,987,948 $1,769,308 $1,768,029 $1,737,259
Net income (000's)...... $  190,849 $  176,734 $  175,465 $  163,987 $  156,140
Earnings per average
 common share--basic....      $1.54      $1.44      $1.36      $1.24      $1.15
Earnings per average
 common share--diluted..      $1.53      $1.43      $1.35      $1.23      $1.15
Total assets (000's).... $4,937,033 $4,288,883 $3,999,520 $3,947,138 $3,912,324
Long-term obligations
 and redeemable
 preferred stock
 (000's)................ $1,726,766 $1,188,352 $1,274,379 $1,281,395 $1,295,962
Cash dividends declared
 per common share.......     $0.915     $0.855     $0.795     $0.735     $0.675
</TABLE>
 
 
                                       16
<PAGE>
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
      RESULTS OF OPERATIONS.
 
  Information regarding results of operations, liquidity and capital
resources, environmental matters and competition is reported in the 1997
Annual Report to Shareholders under "Management's Discussion and Analysis of
Financial Condition and Results of Operations", which information is
incorporated by reference (see Exhibit 13).
 
ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
 
  Information regarding market risk is reported in the 1997 Annual Report to
Shareholders under "Management's Discussion and Analysis of Financial
Condition and Results of Operations--Market Risk Sensitive Instruments and
Positions", which information is incorporated by reference (see Exhibit 13).
 
 
                                      17
<PAGE>
 
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.
 
                            NIPSCO INDUSTRIES, INC.
 
                        CONSOLIDATED STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                           YEAR ENDED DECEMBER 31,
                              --------------------------------------------------
                                    1997             1996             1995
                              ---------------- ---------------- ----------------
                               (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                           <C>              <C>              <C>
Operating Revenues:
  Gas.......................  $        807,239 $        799,395 $        691,402
  Electric..................         1,017,083        1,022,231        1,030,923
  Water.....................            60,743              --               --
  Products and Services.....           701,476          166,322           46,983
                              ---------------- ---------------- ----------------
                                     2,586,541        1,987,948        1,769,308
                              ---------------- ---------------- ----------------
Cost of Sales:
  Gas costs.................           495,287          483,777          399,113
  Fuel for electric
   generation...............           238,548          233,215          242,337
  Power purchased...........            37,274           53,751           43,681
  Products and Services.....           604,505          101,240            9,357
                              ---------------- ---------------- ----------------
                                     1,375,614          871,983          694,488
                              ---------------- ---------------- ----------------
Operating Margin............         1,210,927        1,115,965        1,074,820
                              ---------------- ---------------- ----------------
Operating Expenses and Taxes
 (except income):
  Operation.................           390,253          346,059          332,938
  Maintenance...............            76,552           74,101           78,828
  Depreciation and
   amortization.............           249,804          233,993          206,959
  Taxes (except income).....            83,765           75,504           74,218
                              ---------------- ---------------- ----------------
                                       800,374          729,657          692,943
                              ---------------- ---------------- ----------------
Operating Income............           410,553          386,308          381,877
                              ---------------- ---------------- ----------------
Other Income (Deductions)...            14,619           11,986            1,471
                              ---------------- ---------------- ----------------
Interest and Other Charges:
  Interest on long-term
   debt.....................           105,498           85,382           82,655
  Other interest............            10,391           15,736            9,883
  Amortization of premium,
   reacquisition premium,
   discount and expense on
   debt, net................             4,718            4,605            4,402
  Dividend requirements on
   preferred stocks of
   subsidiaries.............             8,691            8,712            9,046
                              ---------------- ---------------- ----------------
                                       129,298          114,435          105,986
                              ---------------- ---------------- ----------------
Income Taxes................           105,025          107,125          101,897
                              ---------------- ---------------- ----------------
Net Income..................           190,849          176,734          175,465
                              ---------------- ---------------- ----------------
Dividend requirements on
 preferred shares...........               --               119            3,063
                              ---------------- ---------------- ----------------
Balance available for common
 shareholders...............  $        190,849 $        176,615 $        172,402
                              ================ ================ ================
Average common shares
 outstanding--basic*........       123,849,126      122,381,500      126,562,354
Basic earnings per average
 common share*..............  $           1.54 $           1.44 $           1.36
                              ================ ================ ================
Diluted earnings per average
 common share*..............  $           1.53 $           1.43 $           1.35
                              ================ ================ ================
Dividends declared per
 common share*..............  $          0.915 $          0.855 $          0.795
                              ================ ================ ================
</TABLE>
- --------
*  Amounts have been restated to reflect two-for-one stock split.
 
  The accompanying notes to consolidated financial statements are an integral
                            part of this statement.
 
                                       18
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                           CONSOLIDATED BALANCE SHEET
<TABLE>
<CAPTION>
                                                             DECEMBER 31,
                                                         ---------------------
                                                            1997       1996
                                                         ---------- ----------
                                                              (DOLLARS IN
                                                              THOUSANDS)
<S>                                                      <C>        <C>
ASSETS
Property, Plant and Equipment:
Utility Plant, at original cost (including construction
 work in progress of $188,710 and $166,812,
 respectively):
   Electric............................................. $4,066,568 $4,050,084
   Gas..................................................  1,395,140  1,344,230
   Water................................................    603,013        --
   Common...............................................    351,350    346,636
                                                         ---------- ----------
                                                          6,416,071  5,740,950
   Less--Accumulated provision for depreciation and
    amortization........................................  2,759,945  2,546,162
                                                         ---------- ----------
     Total utility plant................................  3,656,126  3,194,788
                                                         ---------- ----------
Other property, at cost, less accumulated provision for
 depreciation...........................................     96,028    147,370
                                                         ---------- ----------
     Total Property, Plant and Equipment................  3,752,154  3,342,158
                                                         ---------- ----------
Investments:
 Investments, at equity.................................     82,855     52,260
 Investments, at cost...................................     31,771     30,424
 Other investments......................................     24,499     20,090
                                                         ---------- ----------
     Total Investments..................................    139,125    102,774
                                                         ---------- ----------
Current Assets:
 Cash and cash equivalents..............................     30,780     26,333
 Accounts receivable, less reserve of $5,887 and
  $5,569, respectively..................................    231,580    165,441
 Other receivables......................................    107,231     42,184
 Fuel adjustment clause.................................      2,679      9,149
 Gas cost adjustment clause.............................     89,991    100,214
 Materials and supplies, at average cost................     60,085     59,859
 Electric production fuel, at average cost..............     18,837     26,483
 Natural gas in storage.................................     61,436     65,093
 Prepayments and other..................................     28,089     28,491
                                                         ---------- ----------
     Total current assets...............................    630,708    523,247
                                                         ---------- ----------
Other Assets:
 Regulatory assets......................................    211,513    236,205
 Intangible assets, less accumulated provision for
  amortization..........................................     68,175        --
 Prepayments and other..................................    135,358     84,499
                                                         ---------- ----------
     Total other assets.................................    415,046    320,704
                                                         ---------- ----------
                                                         $4,937,033 $4,288,883
                                                         ========== ==========
CAPITALIZATION AND LIABILITIES
Capitalization (see page 20):
 Common shareholders' equity (see page 23).............. $1,264,788 $1,100,501
 Preferred stocks--
   Northern Indiana Public Service Company:
     Series without mandatory redemption provisions.....     81,123     81,126
     Series with mandatory redemption provisions........     58,841     61,246
   Indianapolis Water Company:
     Series without mandatory redemption provisions.....      4,497        --
 Long-term debt, excluding amounts due within one year..  1,667,925  1,127,106
                                                         ---------- ----------
     Total capitalization...............................  3,077,174  2,369,979
                                                         ---------- ----------
Current Liabilities:
 Current portion of long-term debt......................     54,621    146,052
 Short-term borrowings..................................    212,639    425,985
 Accounts payable.......................................    226,751    251,730
 Dividends declared on common and preferred stocks......     30,784     28,308
 Customer deposits......................................     22,091     17,580
 Taxes accrued..........................................     77,573     78,723
 Interest accrued.......................................     19,124      7,557
 Accrued employment costs...............................     58,799     44,186
 Other accruals.........................................     47,930     31,882
                                                         ---------- ----------
     Total current liabilities..........................    750,312  1,032,003
                                                         ---------- ----------
Other:
 Deferred income taxes..................................    651,815    602,745
 Deferred investment tax credits, being amortized over
  life of related property..............................    105,538    108,258
 Deferred credits.......................................     73,715     37,338
 Customer advances and contributions in aid of
  construction..........................................    110,145     15,830
 Accrued liability for postretirement benefits..........    132,919    109,429
 Other noncurrent liabilities...........................     35,415     13,301
                                                         ---------- ----------
     Total other........................................  1,109,547    886,901
                                                         ---------- ----------
Commitments and Contingencies (see notes)...............
                                                         $4,937,033 $4,288,883
                                                         ========== ==========
</TABLE>
 
                The accompanying notes to consolidated financial
               statements are an integral part of this statement.
 
                                       19
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                    CONSOLIDATED STATEMENT OF CAPITALIZATION
 
<TABLE>
<CAPTION>
                                                       DECEMBER 31,
                                             ----------------------------------
                                                   1997              1996
                                             ----------------  ----------------
                                                  (DOLLARS IN THOUSANDS)
<S>                                          <C>        <C>    <C>        <C>
Common shareholders' equity (see page 23)..  $1,264,788  41.1% $1,100,501  46.4%
                                             ----------        ----------
Preferred Stocks, which are redeemable
 solely at option of issuer:
  Northern Indiana Public Service Company--
    Cumulative preferred stock--
     $100 par value--
      4 1/4% series--209,118 and 209,145
       shares outstanding, respectively....      20,912            20,915
      4 1/2% series--79,996 shares
       outstanding.........................       8,000             8,000
      4.22% series--106,198 shares
       outstanding.........................      10,620            10,620
      4.88% series--100,000 shares
       outstanding.........................      10,000            10,000
      7.44% series--41,890 shares
       outstanding.........................       4,189             4,189
      7.50% series--34,842 shares
       outstanding.........................       3,484             3,484
      Premium on preferred stock...........         254               254
    Cumulative preferred stock--no par
     value--
      Adjustable Rate (6.00% at December
       31, 1997)--Series A (stated value--
       $50 per share), 473,285 shares
       outstanding.........................      23,664            23,664
                                             ----------        ----------
                                                 81,123   2.6%     81,126   3.4%
                                             ----------        ----------
Redeemable Preferred Stocks, subject to
 mandatory redemption requirements or whose
 redemption is outside the control of
 issuer:
  Northern Indiana Public Service Company--
    Cumulative preferred stock--
     $100 par value--
      8.85% series--62,500 and 75,000
       shares outstanding, respectively....       6,250             7,500
      7 3/4% series--38,906 and 44,460
       shares outstanding, respectively....       3,891             4,446
      8.35% series--57,000 and 63,000
       shares outstanding, respectively....       5,700             6,300
    Cumulative preferred stock--no par
     value--
      6.50% series--430,000 shares
       outstanding.........................      43,000            43,000
                                             ----------        ----------
                                                 58,841   1.9%     61,246   2.6%
                                             ----------        ----------
  Indianapolis Water Company--
    Cumulative preferred stock--
     $100 par value--
    Rates ranging from 4.00% to 5.00%
      44,966 shares outstanding............       4,497   0.2%        --    --
                                             ----------        ----------
Long-term debt (see page 21)...............   1,667,925  54.2%  1,127,106  47.6%
                                             ---------- -----  ---------- -----
      Total capitalization.................  $3,077,174 100.0% $2,369,979 100.0%
                                             ========== =====  ========== =====
</TABLE>
 
  The accompanying notes to consolidated financial statements are an integral
                            part of this statement.
 
                                       20
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                    CONSOLIDATED STATEMENT OF LONG-TERM DEBT
 
<TABLE>
<CAPTION>
                                                            DECEMBER 31,
                                                        ----------------------
                                                           1997        1996
                                                        ----------  ----------
                                                             (DOLLARS IN
                                                             THOUSANDS)
<S>                                                     <C>         <C>
Northern Indiana Public Service Company:
  First mortgage bonds--
    Series P, 6 7/8%--due October 1, 1998.............. $      --   $   14,509
    Series T, 7 1/2%--due April 1, 2002................     39,500      40,000
    Series NN, 7.10%--due July 1, 2017.................     55,000      55,000
                                                        ----------  ----------
      Total............................................     94,500     109,509
                                                        ----------  ----------
  Pollution control notes and bonds--
    Series A note--City of Michigan City--
     5.70% due October 1, 2003.........................     18,000      19,000
    Series 1988 Bonds--Jasper County--Series A, B and C
     3.81% weighted average at December 31, 1997, due
     November 1, 2016..................................    130,000     130,000
    Series 1988 Bonds--Jasper County--Series D
     3.78% weighted average at December 31, 1997, due
     November 1, 2007..................................     24,000      24,000
    Series 1994 Bonds--Jasper County--Series A
     4.25% at December 31, 1997, due August 1, 2010....     10,000      10,000
    Series 1994 Bonds--Jasper County--Series B
     4.25% at December 31, 1997, due June 1, 2013......     18,000      18,000
    Series 1994 Bonds--Jasper County--Series C
     4.25% at December 31, 1997, due April 1, 2019.....     41,000      41,000
                                                        ----------  ----------
      Total............................................    241,000     242,000
                                                        ----------  ----------
  Medium-term notes--
    Issued at interest rates between 6.10% and 7.69%,
     with a weighted average interest rate of 7.00% and
     various maturities between April 5, 2000 and
     August 4, 2027....................................    748,025     644,025
                                                        ----------  ----------
  Unamortized premium and discount on long-term debt,
   net.................................................     (4,029)     (3,526)
                                                        ----------  ----------
      Total long-term debt of Northern Indiana Public
       Service Company.................................  1,079,496     992,008
                                                        ----------  ----------
Indianapolis Water Company:
  First mortgage bonds--
    Series 5.20%--due May 1, 2001......................     11,600         --
    Series 8.00%--due December 15, 2001................      3,000         --
    Series 7 7/8%--due March 1, 2019...................     40,000         --
    Series 9.83%--due June 15, 2019....................      5,000         --
    Series 6.10%--due December 1, 2022.................      5,000         --
    Series 8.19%--due December 1, 2022.................     10,000         --
    Series 5.85%--due September 1, 2025................     18,000         --
                                                        ----------  ----------
      Total long-term debt of Indianapolis Water
       Company.........................................     92,600         --
                                                        ----------  ----------
IWC Resources Corporation:
  Senior Note Payable--6.31% due March 15, 2001........     14,000         --
  Variable Bank Loan--6.50% due August, 2003...........      5,600         --
                                                        ----------  ----------
      Total long-term debt of IWC Resources
       Corporation.....................................     19,600         --
                                                        ----------  ----------
NIPSCO Capital Markets, Inc.:
  Subordinated Debentures--Series A, 7 3/4%, due March
   31, 2026............................................     75,000      75,000
  Senior Notes Payable--6.78%, due December 1, 2027....     75,000         --
  Medium-term notes--Issued at interest rates between
   7.38% and 7.99%, with a weighted average interest
   rate of 7.66% and various maturities between April
   1, 2004 and May 5, 2027.............................    300,000         --
                                                        ----------  ----------
      Total long-term debt of NIPSCO Capital Markets,
       Inc.............................................    450,000      75,000
NIPSCO Development Company, Inc.:
  Lake Erie Land Company--Notes Payable--9.00%--due
   July 7, 2004........................................      2,637         100
  Elm Energy and Recycling (UK), Ltd. Term Loan
   Facility............................................        --       40,576
  NDC Douglas Properties, Inc.--Notes Payable--
    Interest rates between 6.72% and 8.15% with a
     weighted average interest rate of 7.75% and
     maturities through April 1, 2006..................     23,592      19,422
                                                        ----------  ----------
      Total long-term debt of NIPSCO Development
       Company, Inc....................................     26,229      60,098
                                                        ----------  ----------
      Total long-term debt, excluding amounts due
       within one year................................. $1,667,925  $1,127,106
                                                        ==========  ==========
</TABLE>
  The accompanying notes to consolidated financial statements are an integral
                            part of this statement.
 
                                       21
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                      CONSOLIDATED STATEMENT OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                YEAR ENDED DECEMBER 31,
                                          -------------------------------------
                                             1997         1996         1995
                                          -----------  -----------  -----------
                                                (DOLLARS IN THOUSANDS)
<S>                                       <C>          <C>          <C>
Cash flows from operating activities:
  Net income............................  $   190,849  $   176,734  $   175,465
Adjustments to reconcile net income to
 net cash:
  Depreciation and amortization.........      249,804      233,993      206,959
  Deferred federal and state operating
   income taxes, net....................       (1,467)      21,126       (1,480)
  Deferred investment tax credits, net..       (7,376)      (7,408)      (7,515)
  Advance contract payment..............        1,900      (17,100)         --
  Change in certain assets and
   liabilities--*
    Accounts receivable, net............      (37,369)     (45,037)     (22,609)
    Other receivables...................      (65,047)     (30,778)     (11,406)
    Electric production fuel............        7,646      (12,225)       4,089
    Natural gas in storage..............        3,657       (4,209)      16,910
    Accounts payable....................      (18,567)      81,013       (8,481)
    Taxes accrued.......................        3,389       17,002       (9,202)
    Fuel adjustment clause..............        6,470        1,152       (8,687)
    Gas cost adjustment clause..........       10,223      (98,791)      24,549
    Accrued employment costs............       12,135       (2,509)       2,884
    Other accruals......................       11,994      (13,503)      22,723
  Other, net............................       60,216        2,525        5,833
                                          -----------  -----------  -----------
      Net cash provided by operating
       activities.......................      428,457      301,985      390,032
                                          -----------  -----------  -----------
Cash flows provided by (used in)
 investing activities:
  Utility construction expenditures.....     (218,931)    (207,881)    (192,966)
  Acquisition of IWC Resources, net of
   cash acquired........................     (288,932)         --           --
  Proceeds from disposition of assets...       35,993       11,049        3,995
  Proceeds from settlement of
   litigation...........................       41,069          --           --
  Other, net............................      (60,461)     (19,243)     (54,284)
                                          -----------  -----------  -----------
      Net cash used in investing
       activities.......................     (491,262)    (216,075)    (243,255)
                                          -----------  -----------  -----------
Cash flows provided by (used in)
 financing activities:
  Issuance of long-term debt............      658,232       78,366      179,555
  Issuance of short-term debt...........    1,029,508    1,582,210    1,290,973
  Net change in commercial paper........     (224,645)     191,705      (84,600)
  Retirement of long-term debt..........     (324,604)     (89,792)    (122,105)
  Retirement of short-term debt.........   (1,042,224)  (1,609,734)  (1,252,250)
  Retirement of preferred shares........       (2,408)     (37,604)      (7,095)
  Issuance of common shares.............      218,566        5,716        7,389
  Acquisition of treasury shares........     (133,077)    (105,498)     (69,183)
  Cash dividends paid on common shares..     (111,593)    (103,190)     (99,043)
  Cash dividends paid on preferred
   shares...............................          --          (766)      (3,063)
  Other, net............................         (503)         514          700
                                          -----------  -----------  -----------
      Net cash provided by (used in)
       financing activities.............       67,252      (88,073)    (158,722)
                                          -----------  -----------  -----------
Net increase (decrease) in cash and cash
 equivalents............................        4,447       (2,163)     (11,945)
Cash and cash equivalents at beginning
 of period..............................       26,333       28,496       40,441
                                          -----------  -----------  -----------
Cash and cash equivalents at end of
 period.................................  $    30,780  $    26,333  $    28,496
                                          ===========  ===========  ===========
</TABLE>
- --------
*  Net of effect from purchase of IWC Resources Corporation.
 
  The accompanying notes to consolidated financial statements are an integral
                            part of this statement.
 
                                       22
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
             CONSOLIDATED STATEMENT OF COMMON SHAREHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                               DOLLARS IN THOUSANDS                                      SHARES
                      -------------------------------------------------------------------------  -----------------------
                                           ADDITIONAL                        CURRENCY
                                   COMMON   PAID-IN   RETAINED   TREASURY   TRANSLATION            COMMON     TREASURY
                        TOTAL      SHARES   CAPITAL   EARNINGS    SHARES    ADJUSTMENT   OTHER     SHARES*     SHARES*
                      ----------  -------- ---------- ---------  ---------  ----------- -------  ----------- -----------
<S>                   <C>         <C>      <C>        <C>        <C>        <C>         <C>      <C>         <C>
Balance, January 1,
 1995...............  $1,107,848  $870,930  $29,657   $ 446,928  $(237,193)   $(1,504)  $  (970) 147,784,218 (19,973,440)
Net income..........     175,465                        175,465
Dividends:
 Preferred shares...      (3,063)                        (3,063)
 Common shares......    (100,232)                      (100,232)
Treasury shares
 acquired...........     (69,183)                                  (69,183)                                   (4,115,330)
Issued:
 Employee stock
  purchase plan.....         604                301                    303                                        38,044
 Long-term incentive
  plan..............       6,785              1,656                 12,850               (7,721)               1,025,700
Unrealized gain on
 available for sale
 securities.........       1,669                                                          1,669
Amortization of
 unearned
 compensation.......       2,413                                                          2,413
Other...............         (91)               596        (261)                 (426)
                      ----------  --------  -------   ---------  ---------    -------   -------  ----------- -----------
Balance, December
 31, 1995...........  $1,122,215  $870,930  $32,210   $ 518,837  $(293,223)   $(1,930)  $(4,609) 147,784,218 (23,025,026)
                      ----------  --------  -------   ---------  ---------    -------   -------  ----------- -----------
Net income..........     176,734                        176,734
Dividends:
 Preferred shares...        (119)                          (119)
 Common shares......    (103,981)                      (103,981)
Treasury shares
 acquired...........    (105,498)                                 (105,498)                                   (5,587,208)
Issued:
 Employee stock
  purchase plan.....         783                454                    329                                        41,338
 Long-term incentive
  plan..............       5,011                186                  5,397                 (572)                 398,000
Unrealized gain on
 available for sale
 securities.........       1,079                                                          1,079
Amortization of
 unearned
 compensation.......       2,570                                                          2,570
Other...............       1,707                 18        (101)                1,790
                      ----------  --------  -------   ---------  ---------    -------   -------  ----------- -----------
Balance, December
 31, 1996...........  $1,100,501  $870,930  $32,868   $ 591,370  $(392,995)   $  (140)  $(1,532) 147,784,218 (28,172,896)
                      ----------  --------  -------   ---------  ---------    -------   -------  ----------- -----------
Net income..........     190,849                        190,849
Dividends:
 Common shares......    (114,303)                      (114,303)
Treasury shares
 acquired...........    (133,077)                                 (133,077)                                   (6,536,928)
Issued:
 IWC Resources
  Corporation
  acquisition.......     207,417             55,008                152,409                                    10,580,764
 Acquisition of
  minority interest.       5,469              1,351                  4,118                                       270,064
 Employee stock
  purchase plan.....         697                424                    273                                        34,376
 Long-term incentive
  plan..............       5,004                118                  5,329                 (443)                 353,066
Unrealized gain on
 available for sale
 securities.........       1,689                                                          1,689
Amortization of
 unearned
 compensation.......       2,099                                                          2,099
Other...............      (1,557)                (1)       (126)               (1,430)
                      ----------  --------  -------   ---------  ---------    -------   -------  ----------- -----------
Balance, December
 31, 1997...........  $1,264,788  $870,930  $89,768   $ 667,790  $(363,943)   $(1,570)  $ 1,813  147,784,218 (23,471,554)
                      ==========  ========  =======   =========  =========    =======   =======  =========== ===========
</TABLE>
- -------
*  Amounts restated to reflect two-for-one stock split.
 
                                       23
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
HOLDING COMPANY STRUCTURE
 
  NIPSCO Industries, Inc. (Industries) is an energy/utility-based holding
company providing electric energy, natural gas and water to the public through
its six wholly-owned regulated subsidiaries (Utilities): Northern Indiana
Public Service Company (Northern Indiana); Kokomo Gas and Fuel Company (Kokomo
Gas); Northern Indiana Fuel and Light Company, Inc. (NIFL); Crossroads
Pipeline Company (Crossroads); Indianapolis Water Company (IWC); and Harbour
Water Corporation (Harbour). Industries' regulated gas and electric
subsidiaries (Northern Indiana, Kokomo Gas, NIFL and Crossroads) are referred
to as "Energy Utilities"; and regulated water subsidiaries (IWC and Harbour)
are referred to as "Water Utilities."
 
  On March 25, 1997, Industries acquired IWC Resources Corporation (IWCR).
IWCR's subsidiaries include two regulated water utilities (IWC and Harbour)
and five non-utility companies providing utility-related services including
installation, repair and maintenance of underground pipelines and utility line
locating and marking. The two primary non-utility subsidiaries are Miller
Pipeline Corporation (Miller) and SM&P Utility Resources, Inc. (SM&P).
 
  Industries also provides non-regulated energy/utility-related services
including energy marketing and trading; power generation; gas transmission,
supply and storage; installation, repair and maintenance of underground
pipelines; utility line locating and marking; and related products targeted at
customer segments principally through the following wholly-owned subsidiaries:
NIPSCO Development Company, Inc. (Development); NIPSCO Energy Services, Inc.
(Services); Primary Energy, Inc. (Primary); Miller; and SM&P. NIPSCO Capital
Markets, Inc. (Capital Markets) handles financing for Industries and its
subsidiaries, other than Northern Indiana. These subsidiaries are referred to
collectively as "Products and Services."
 
  On December 18, 1997, Industries and Bay State Gas Company signed a
definitive merger agreement under which Industries will acquire all of the
common stock of Bay State Gas Company in a stock-for-stock transaction. Refer
to Purchase of Bay State Gas Company in Notes to Consolidated Financial
Statements for a more detailed discussion of the proposed acquisition.
 
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
 Basis of Presentation
 
  The consolidated financial statements include the accounts of majority-owned
subsidiaries of Industries after the elimination of significant intercompany
accounts and transactions. Investments for which Industries has at least a 20%
interest and certain joint ventures are accounted for under the equity method.
Investments with less than a 20% interest are accounted for under the cost
method. Certain reclassifications were made to conform the prior years'
financial statements to the current presentation.
 
  The prior period operating results related to "Products and Services" were
previously reported under the caption "Other Income (Deductions)" in the
Consolidated Statement of Income. Accordingly, these results have been
reclassified to conform to the current presentation.
 
  The accompanying consolidated financial statements of Industries include
nine months of operating results for IWCR for the period ended December 31,
1997.
 
 Use of Estimates
 
  The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities at the
date of the financial statements and the reported amounts of revenues and
expenses during the reporting period. Actual results could differ from those
estimates.
 
                                      24
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 Operating Revenues
 
  Utility revenues are recorded based on estimated service rendered, but are
billed to customers monthly on a cycle basis. Energy marketing revenues are
recognized as the related commodity is delivered to customers. Construction
revenues are recognized on the percentage of completion method whereby
revenues are recognized in proportion to costs incurred over the life of each
project. Industries records provisions for losses on construction contracts,
if any, in the period in which such losses become probable.
 
 Depreciation and Maintenance
 
  The Energy Utilities provide depreciation on a straight-line method over the
remaining service lives of the electric, gas and common properties. The
weighted average provisions, as a percentage of the cost of original
depreciable utility plant, were approximately 4.3% for 1997, 4.2% for 1996 and
4.1% for 1995.
 
  The Water Utilities provide depreciation on the original cost of utility
plant in service using a composite annual rate of 1.9% for 1997.
 
  The Utilities follow the practice of charging maintenance and repairs,
including the cost of renewals of minor items of property, to maintenance
expense accounts, except for repairs of transportation and service equipment
which are charged to clearing accounts and redistributed to operating expense
and other accounts. When property which represents a retirement unit is
replaced or removed, the cost of such property is credited to utility plant,
and such cost, together with the cost of removal less salvage, is charged to
the accumulated provision for depreciation.
 
 Amortization of Software Costs
 
  Industries has capitalized software relating to various technology
functions. At the date of installation, Industries estimates that the specific
software will have a useful life between five and ten years. The FERC
prescribes certain amortization periods, and Industries' management has
determined that, on average, these are reasonable useful life estimates for
the portfolio of capitalized software. The Energy Utilities include these
amortization estimates, based on useful life, in their quarterly filings with
the Indiana state regulatory commission.
 
 Plant Acquisition Adjustments
 
  Utility plant includes amounts representing the excess of purchase price
over underlying book values associated with the acquisitions of Kokomo Gas,
NIFL, IWC and Harbour. These amounts are $197.7 million (see Purchase of IWC
Resources Note) and $40.6 million at December 31, 1997 and December 31, 1996,
respectively, and are being amortized over a forty-year period from the
respective dates of acquisition.
 
 Intangible Assets
 
  The excess of cost over the fair value of the net assets of non-utility
subsidiaries acquired is stated as goodwill and is being amortized on a
straight-line basis over a weighted average period of 34 years. Other
intangible assets approximating $7.7 million are being amortized over a period
of eight years. Industries assesses the recoverability of its intangible
assets on a periodic basis to
 
                                      25
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
confirm that expected future cash flows will be sufficient to support the
recorded intangible assets. Accumulated amortization of intangibles at
December 31, 1997, was approximately $1.1 million.
 
 Coal Reserves
 
  Northern Indiana has a long-term mining contract to mine its coal reserves
through the year 2001. The costs of these reserves are being recovered through
the rate-making process as such coal reserves are used to produce electricity.
 
 Power Purchased
 
  Power purchases and net interchange power with other electric utilities
under interconnection agreements are included in Cost of Sales under the
caption "Power purchased."
 
 Accounts Receivable
 
  At December 31, 1997, Northern Indiana had sold $100 million of its accounts
receivable under a sales agreement which expires May 31, 2002.
 
 Customer Advances and Contributions in Aid of Construction
 
  IWC allows developers to install and provide for the installation of water
main extensions, which are to be transferred to IWC upon completion. The cost
of the main extensions and the amount of any funds advanced for the cost of
water mains installed are included in customer advances for construction and
are generally refundable to the customer over a period of ten years. Advances
not refunded within ten years are permanently transferred to contributions in
aid of construction.
 
 Statement of Cash Flows
 
  For purposes of the Consolidated Statement of Cash Flows, Industries
considers temporary cash investments with an original maturity of three months
or less to be cash equivalents.
 
  Cash paid during the periods reported for income taxes and interest was as
follows:
 
<TABLE>
<CAPTION>
                                                        1997    1996     1995
                                                      -------- ------- --------
                                                           (IN THOUSANDS)
      <S>                                             <C>      <C>     <C>
      Income taxes................................... $116,849 $75,795 $117,940
      Interest, net of amounts capitalized...........  102,361  87,281   89,321
</TABLE>
 
 Fuel Adjustment Clause
 
  All metered electric rates contain a provision for adjustment in charges for
electric energy to reflect increases and decreases in the cost of fuel and the
fuel cost of purchased power through operation of a fuel adjustment clause. As
prescribed by order of the Indiana Utility Regulatory Commission (Commission)
applicable to metered retail rates, the adjustment factor has been calculated
based on the estimated cost of fuel and the fuel cost of purchased power in a
future three-month period. If two statutory requirements relating to expense
and return levels are satisfied, any under-recovery or over-recovery caused by
variances between estimated and actual cost in a given three-month period will
be included in a future filing. Northern Indiana records any under-recovery or
over-recovery as a current asset or current liability until such time as it is
billed or refunded to its customers. The fuel adjustment factor is subject to
a quarterly hearing by the Commission and remains in effect for a three-month
period.
 
                                      26
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 Gas Cost Adjustment Clause
 
  All metered gas rates contain an adjustment factor which reflects the cost
of purchased gas, contracted gas storage and storage transportation charges.
The Energy Utilities record any under-recovery or over-recovery as a current
asset or current liability until such time as it is billed or refunded to
their customers. The gas cost adjustment factor for Northern Indiana is
subject to a quarterly hearing by the Commission and remains in effect for a
three-month period. The gas cost adjustment factors for Kokomo Gas and NIFL
are subject to semi-annual hearings by the Commission and remain in effect for
a six-month period. If the statutory requirement relating to the level of
return is satisfied, any under-recovery or over-recovery caused by variances
between estimated and actual cost in a given three- or six-month period will
be included in a future filing. See "FERC Order No. 636" for a discussion of
gas transition cost charges.
 
 Natural Gas in Storage
 
  Northern Indiana's natural gas in storage is valued using the last-in,
first-out (LIFO) inventory methodology. Based on the average cost of gas
purchased in December 1997 and 1996 the estimated replacement cost of gas in
storage (current and non-current) at December 31, 1997 and 1996 exceeded the
stated LIFO cost by approximately $42 million and $96 million, respectively.
Certain other subsidiaries of Industries have natural gas in storage valued at
average cost.
 
 Hedging Activities
 
  Industries utilizes a variety of commodity-based derivative financial
instruments to reduce the price risk inherent in its natural gas and electric
power marketing activities. The gains and losses on these derivative financial
instruments are deferred (Other Current Assets or Other Current Liabilities)
pursuant to an identified risk reduction strategy. Such deferrals are
recognized in income concurrent with the disposition of the underlying
physical commodity. In certain circumstances, a derivative financial
instrument will serve to hedge the acquisition cost of gas injected into
storage. In this situation, the gain or loss on the derivative financial
instrument is deferred as part of the cost basis of gas in storage and
recognized upon the ultimate disposition of the natural gas. If a derivative
financial instrument contract is terminated early because it is probable that
a transaction or anticipated transaction will not occur, any gain or loss as
of such date is immediately recognized in earnings. If a derivative financial
instrument contract is terminated early for other economic reasons, any gain
or loss as of the termination date is deferred and recorded when the
associated transaction or anticipated transaction affects earnings.
 
  Industries' gas subsidiaries use commodity futures contracts, options and
swaps to hedge the impact of natural gas price fluctuations related to its
business activities, including price risk related to the physical location of
the natural gas (basis risk). As of December 31, 1997, Industries had open
derivative financial instruments representing hedges of natural gas sales of
8.9 billion cubic feet (Bcf), natural gas purchases and inventories of 13.4
Bcf and net basis differentials of 33.4 Bcf. The net deferred loss on these
derivative financial instruments as of December 31, 1997 was not material.
 
  Industries purchases options to hedge price risk associated with a portion
of its fixed price purchase and sale commitments related to electricity. The
deferred premiums paid on these options as of December 31, 1997 were not
material.
 
  Refer to "Market Risk Sensitive Instruments and Positions" in Management's
Discussion and Analysis of Financial Condition and Results of Operations. See
Industries Form 8-K, pages 8-9.
 
                                      27
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 Impact of Accounting Standards
 
  In July 1997, FASB issued SFAS No. 130, "Reporting Comprehensive Income."
This statement establishes standards for reporting and display of
comprehensive income and its components in a full set of general purpose
financial statements. The objective of the statement is to report a measure of
all changes in equity of an enterprise that result from transactions or other
economic events during the period other than transactions with shareholders.
Industries will be required to display items of other comprehensive income
including, but not limited to, changes in its unrealized holding gains or
losses on its available-for-sale securities and foreign currency translation
adjustments. Industries will adopt this statement effective January 1, 1998.
 
 Regulatory Assets
 
  The Utilities' operations are subject to the regulation of the Commission
and, in the case of the Energy Utilities, the Federal Energy Regulatory
Commission (FERC). Accordingly, the Utilities' accounting policies are subject
to the provisions of SFAS No. 71, "Accounting for the Effects of Certain Types
of Regulation." The Utilities monitor changes in market and regulatory
conditions and the resulting impact of such changes in order to continue to
apply the provisions of SFAS No. 71 to some or all of their operations. As of
December 31, 1997 and December 31, 1996, the regulatory assets identified
below represent probable future revenue to the Utilities associated with
certain incurred costs as these costs are recovered through the rate-making
process. Regulatory assets were comprised of the following items:
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31, DECEMBER 31,
                                                          1997         1996
                                                      ------------ ------------
                                                           (IN THOUSANDS)
      <S>                                             <C>          <C>
      Unamortized reacquisition premium on debt (See
       Long-Term Debt note)..........................   $ 46,748     $ 50,262
      Unamortized R. M. Schahfer Unit 17 and Unit 18
       carrying charges and deferred depreciation
       (See below)...................................     66,546       70,763
      Bailly scrubber carrying charges and deferred
       depreciation (See below)......................      9,880       10,816
      Deferral of SFAS No. 106 expense not recovered
       (See Postretirement Benefits note)............     87,653       87,557
      FERC Order No. 636 transition costs (See FERC
       Order No. 636 note)...........................     28,744       47,399
      Regulatory income tax asset, net...............      6,941        4,736
      Other..........................................      4,261          --
                                                        --------     --------
                                                         250,773      271,533
                                                        --------     --------
      Less: Current portion of regulatory assets.....     39,260       35,328
                                                        --------     --------
                                                        $211,513     $236,205
                                                        ========     ========
</TABLE>
 
  If a portion of the Utilities' operations becomes no longer subject to the
provisions of SFAS No. 71, a write-off of certain regulatory assets might be
required, unless some form of transition cost recovery is established by the
appropriate regulatory body which would meet the requirements under generally
accepted accounting principles for continued accounting as regulatory assets
during such recovery period.
 
 Carrying Charges and Deferred Depreciation
 
  Upon completion of R. M. Schahfer Units 17 and 18, Northern Indiana
capitalized the carrying charges and deferred depreciation in accordance with
orders of the Commission until the
 
                                      28
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
cost of each unit was allowed in rates. Such carrying charges and deferred
depreciation are being amortized over the remaining life of each unit.
 
  Northern Indiana has capitalized carrying charges and deferred depreciation
and certain operating expenses relating to its scrubber service agreement for
its Bailly Generating Station in accordance with an order of the Commission.
Pursuant to such order, capitalization of carrying charges and deferral of
depreciation and certain operating expenses ceased on December 31, 1995. The
accumulated balance of the deferred costs and related carrying charges is
being amortized over the remaining life of the scrubber service agreement.
 
 Allowance for Funds Used During Construction
 
  Allowance for funds used during construction (AFUDC) is charged to
construction work in progress during the period of construction and represents
the net cost of borrowed funds used for construction purposes and a reasonable
rate upon other (equity) funds. Under established regulatory rate practices,
after the construction project is placed in service, Northern Indiana is
permitted to include in the rates charged for utility services (a) a fair
return on and (b) depreciation of such AFUDC included in plant in service.
 
  At January 1, 1995, a pretax rate of 6.0% for all construction was being
used; effective January 1, 1996, the rate decreased to 5.5% and effective
January 1, 1997, the rate remained at 5.5%.
 
 Foreign Currency Translation
 
  Translation gains or losses are based upon the end-of-period exchange rate
and are recorded as a separate component of common shareholders' equity.
 
 Investments In Real Estate
 
  Development invests in a series of affordable housing projects within the
Utilities' service territory. These investments include certain tax benefits,
including low-income housing tax credits and tax deductions for operating
losses of the housing projects. Development accounts for these investments
using the equity method. Investments, at equity, include $30.1 million and
$24.1 million relating to affordable housing projects at December 31, 1997 and
December 31, 1996, respectively.
 
 Income Taxes
 
  Deferred income taxes are recognized as costs in the rate-making process by
the commissions having jurisdiction over the rates charged by the Utilities.
Deferred income taxes are provided as a result of provisions in the income tax
law that either require or permit certain items to be reported on the income
tax return in a different period than they are reported in the financial
statements. These taxes are reversed by a debit or credit to deferred income
tax expense as the temporary differences reverse. Investment tax credits have
been deferred and are being amortized to income over the life of the related
property.
 
RESOLUTION OF TAX MATTER
 
  In 1991, the Internal Revenue Service (IRS) issued a notice of deficiency
for Northern Indiana's taxes for the years 1982 through 1985 ($3,785,250 per
year plus interest) relating to interest payments on $70 million of 17 1/4%
Notes issued in 1981 by Northern Indiana's former foreign subsidiary, Northern
Indiana Public Service Finance N.V. (Finance). The IRS maintained that
interest paid on the Notes should have been subject to United States tax
withholding. Northern Indiana challenged the assessment in the United States
Tax Court (Tax Court) and the
 
                                      29
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
Tax Court ruled in favor of Northern Indiana, finding that the interest paid
on the Notes was not subject to United States tax withholding. The IRS
appealed the Tax Court's decision to the U. S. Court of Appeals for the
Seventh Circuit (Court of Appeals) and Northern Indiana filed a cross appeal.
On June 6, 1997, the Court of Appeals issued an order affirming in full the
favorable Tax Court order. The IRS did not appeal the decision of the Court of
Appeals.
 
RESOLUTION OF ELM ENERGY AND RECYCLING (UK) LTD. LITIGATION
 
  Development is an 85% shareholder in Elm Energy and Recycling (UK) Ltd.
(Elm), which owns and operates a tire-fueled electric generating plant in
Wolverhampton, England (Project). In 1995, the Project failed certain
performance and reliability tests which had been established under a contract
between Elm and TBV Power Limited (TBV), a company jointly owned by
subsidiaries of the Tarmac PLC Group and Black & Veatch. Elm "rejected" the
Project in accordance with the contract, and the independent Project engineer
then certified that 29.6 million British Pounds Sterling (approximately $48.9
million at December 31, 1997) were to be reimbursed by TBV to Elm. TBV filed
suit in the English courts to enjoin enforcement of the decision and to allege
certain breaches of the underlying construction contract. Elm counterclaimed,
and Elm and Development also sought additional remedies at law, in both the
United States and the United Kingdom, for damages and/or sanctions against
TBV, Tarmac PLC Group, Black & Veatch and its chairman. Black & Veatch
counterclaimed against Elm and Development.
 
  In September 1997, a settlement was reached on mutually agreed terms which
resulted in the dismissal, with prejudice, of all litigation in the United
States and the United Kingdom relating to the Project (Elm Litigation
Settlement). Concurrently, Elm reached a settlement with its banks pursuant to
which the banks were paid a portion of the proceeds received by Elm in the Elm
Litigation Settlement in exchange for the banks agreeing to forgive Elm's
remaining bank debt and to release all security interests they had in the
Project. The Elm Litigation Settlement was not material to the results of
operations or financial position of Industries. Elm is continuing to operate
the Project and Development provides financing to support its operations.
 
NESI ENERGY MARKETING CANADA LTD. LITIGATION
 
  On October 31, 1996, Services' wholly-owned subsidiary NIPSCO Energy
Services Canada Ltd. (NESI Canada) acquired 70% of the outstanding shares of
Chandler Energy Inc., a gas marketing and trading company located in Calgary,
Alberta, and subsequently renamed it NESI Energy Marketing Canada Ltd. (NEMC).
Between November 1 and November 27, 1996, gas prices in the Calgary market
increased dramatically. As a result, NEMC was selling gas, pursuant to
contracts entered into prior to the acquisition date, at prices substantially
below its costs to acquire such gas. On November 27, 1996, NEMC ceased doing
business and sought protection from its creditors under the Companies'
Creditors Arrangement Act, a Canadian corporate reorganization statute. NEMC
was declared bankrupt as of December 12, 1996.
 
  Certain creditors of NEMC have filed claims against Industries, Services,
Capital Markets and NESI Canada, alleging certain misrepresentations relating
to NEMC's financial condition and claiming damages. Industries and its
affiliates intend to vigorously defend against such claims and any other
claims seeking to assert that any party other than NEMC is responsible for
NEMC's liabilities. Industries has fully reserved its investment in NEMC.
Management believes that any additional loss relating to NEMC would not be
material to the results of operations or financial position of Industries.
 
                                      30
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
FERC ORDER NO. 636
 
  The Energy Utilities have recorded approximately $138 million of interstate
pipeline transition costs since December 1993 to reflect the impact of FERC
Order No. 636, a majority of which costs have been paid to the pipeline
suppliers. The Energy Utilities expect that additional transition costs will
not be significant. The Commission has approved the recovery of these FERC-
allowed transition costs on a volumetric basis from sales and transportation
customers. Regulatory assets, in amounts corresponding to the costs recorded
but not yet collected, have been recorded to reflect the ultimate recovery of
these costs.
 
ENVIRONMENTAL MATTERS
 
  The Utilities have an ongoing program to remain aware of laws and
regulations involved with hazardous waste and other environmental matters. The
Utilities intend to continue to evaluate their facilities and properties with
respect to these rules and identify any sites that would require corrective
action. The Utilities have recorded a reserve of approximately $20 million to
cover probable corrective actions as of December 31, 1997; however,
environmental regulations and remediation techniques are subject to future
change. The ultimate cost could be significant, depending on the extent of
corrective actions required. Based upon investigations and management's
understanding of current laws and regulations, the Utilities believe that any
corrective actions required, after consideration of insurance coverages and
contributions from other potentially responsible parties, will not have a
significant impact on the results of operations or financial position of
Industries.
 
  Because of major investments made in modern environmental control facilities
and the use of low-sulfur coal, all of Northern Indiana's electric production
facilities now comply with the specific sulfur dioxide limitations contained
in the acid deposition provisions of the Clean Air Act Amendments of 1990
(CAAA). Reflecting this compliance, on December 31, 1997, Indiana Department
of Environmental Management (IDEM) issued the Phase II Acid Rain permits for
all four of Northern Indiana's electric generating stations. As discussed
below, however, other provisions of the CAAA impose additional requirements on
Northern Indiana.
 
  On December 19, 1996, the Environmental Protection Agency (EPA) promulgated
rules for Phase II of the Acid Rain nitrogen oxides (NOx) reduction program.
For Phase I, during the summer of 1997, the EPA formally approved the Acid
Rain Early Election permits for the pulverized coal units at D. H. Mitchell
and R. M. Schahfer stations. The permits establish the Phase I limits for the
NOx emissions on these units until 2007. On December 23, 1997, Northern
Indiana submitted an Acid Rain Phase II NOx Compliance Plan to IDEM which
included additional controls for two cyclone fired boilers and a plan for
emission averaging to achieve the NOx limits for the system by 2000. Northern
Indiana plans a project to demonstrate a cost effective combustion control
technique on the Unit 12 cyclone fired boiler at Michigan City during 1998.
The CAAA also contain other provisions that could lead to limitations on
emissions of hazardous air pollutants which may require significant capital
expenditures for control of these emissions. Northern Indiana cannot predict
what these requirements will be or the costs of complying with these potential
requirements.
 
  On October 10, 1997, the EPA proposed a rule under the nonattainment
provisions of the CAAA to reduce emissions transported across state boundaries
that allegedly are contributing to nonattainment of the one hour ozone
standard in downwind states. Because NOx is considered a precursor or cause of
ozone formation, the EPA proposed significant NOx reductions for 22 states,
including Indiana, to address the ozone transport issue. These proposals, and
any resulting NOx emission limitations, arise under different provisions of
the CAAA than the Acid Rain NOx program and could result in additional, more
restrictive emission limitations than are imposed
 
                                      31
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
under the Acid Rain Program. The EPA has encouraged states to achieve the
reductions by requiring controls on electric utilities and large boilers.
Northern Indiana is evaluating the EPA's proposal and evaluating potential
requirements that could result from any final rule.
 
  The EPA issued final rules on July 18, 1997, revising the National Ambient
Air Quality Standards for ozone and particulate matter. The revised standards
begin a regulatory process that may lead to reductions in particulate, NOx
emissions and possibly sulfur dioxide emissions, from coal-fired boilers
(including Northern Indiana's generating stations) beyond reductions required
in the Acid Rain and nonattainment provisions of the CAAA. Northern Indiana
cannot predict the costs of complying with future control requirements to meet
these new standards. Northern Indiana will continue to closely monitor
developments in this area and anticipates that the exact nature of the impact
of the new standards on its operations will not be known for some time.
 
  The EPA has notified Northern Indiana that it is a "potentially responsible
party" (PRP) under the Comprehensive Environmental Response Compensation and
Liability Act (CERCLA) and may be required to share in the cost of cleanup of
several waste disposal sites identified by the EPA. The sites are in various
stages of investigation, analysis and remediation. At each of the sites,
Northern Indiana is one of several PRPs, and it is expected that remedial
costs, as provided under CERCLA, will be shared among them. At some sites
Northern Indiana and/or the other named PRPs are presently working with the
EPA to clean up the sites and avoid the imposition of fines or added costs.
 
  In December 1997, at the Summit on Climate Change in Kyoto, Japan, 159
nations formally agreed to targets reducing worldwide levels of greenhouse
gases. If the U.S. Senate ratifies the agreement, the Kyoto Protocol would
impose an obligation on the United States to reduce its emissions of
greenhouse gas to a level seven percent below 1990 levels during the period
2008 to 2012. The impact of this agreement on Northern Indiana is uncertain.
Northern Indiana, as a charter member of the Department of Energy's Climate
Challenge Program, the electric industries' voluntary reduction effort, has
already implemented over 21 projects to voluntarily reduce greenhouse gases
emissions. Northern Indiana continues to investigate methods to address
reduction in carbon dioxide emissions and will monitor the development of U.S.
climate change policy.
 
  The Energy Utilities have instituted a program to investigate former
manufactured-gas plants where one of them is the current or former owner. The
Energy Utilities have identified twenty-eight of these sites and made visual
inspections of these sites. Initial samplings have been conducted at eighteen
sites. Follow-up investigations have been conducted at seven sites and
remedial measures have been selected at four sites. The Energy Utilities will
continue their program to assess and cleanup sites.
 
  During the course of various investigations, the Energy Utilities have
identified impacts to soil, groundwater, sediment and surface water from
former manufactured-gas plants. At three sites where residues were noted
seeping into rivers, Northern Indiana notified the IDEM and the EPA and
immediately took steps to contain the material. The Energy Utilities have
worked with IDEM or the EPA on investigation or remedial activities at several
sites. Three of the sites have been enrolled in the IDEM Voluntary Remediation
Program (VRP). The goal of placing these sites in the VRP is to obtain IDEM
approval of the selection and implementation of whatever remedial measures, if
any, may be required. The Energy Utilities anticipate placing additional sites
in the VRP after remedial measures have been selected.
 
                                      32
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  Northern Indiana and Indiana Gas Company, Inc. (Indiana Gas) have entered
into an agreement covering cost sharing and management of investigation and
remediation programs at five former manufactured-gas plant sites at which both
companies or their predecessors were former operators or owners. One of these
sites is the Lafayette site which Indiana Gas had previously notified Northern
Indiana is being investigated and remediated pursuant to an administrative
order with IDEM. Northern Indiana also notified Cinergy Services, Inc.
(Cinergy) (formerly PSI Energy, Inc.) that it was a former owner or operator
of seven former manufactured-gas plants at which Northern Indiana had
conducted or was planning investigation or remediation activities. In December
1996, Northern Indiana sent a written demand to Cinergy related to one of
these sites, Goshen. Northern Indiana demanded that Cinergy pay Northern
Indiana for costs Northern Indiana has already incurred and to be incurred to
implement the needed remedy at the Goshen site. In August 1997, Northern
Indiana filed suit in federal court against Cinergy seeking recovery of those
costs.
 
  In 1994, the Energy Utilities approached various companies that provided
insurance coverage which the Energy Utilities believe covers costs related to
actions taken at former manufactured-gas plants. There has been litigation
between Northern Indiana and various insurance companies over covered costs.
Northern Indiana has filed claims in state court against various insurance
companies, seeking coverage for costs associated with several former
manufactured-gas plants and damages for alleged misconduct by some of the
insurance companies. The state court action is now proceeding. Northern
Indiana has received cash settlements from several of the insurance companies.
 
  The possibility that exposure to electric and magnetic fields (EMF)
emanating from power lines, household appliances and other electric sources
may result in adverse health effects has been the subject of public,
governmental and media attention. Recently, researchers from the National
Cancer Institute and the Childhood Cancer Group reported they found no
evidence magnetic fields in homes increase the risk of childhood leukemia.
This study follows an EMF report released late last year by the U.S. National
Research Council of the National Academy of Sciences, which concluded, after
examining more than 500 EMF studies spanning 17 years, that, among other
things, there was insufficient evidence to consider EMF a threat to human
health. Despite the reports' findings, future research appropriations are
continuing to be dedicated to explore this issue.
 
  The Water Utilities are subject to pollution control and water quality
control regulations, including those issued by the EPA, IDEM, the Indiana
Water Pollution Control Board and the Indiana Department of Natural Resources.
Under the Federal Clean Water Act and Indiana's regulations, IWC must obtain
National Pollutant Discharge Elimination System (NPDES) permits for discharges
from its water treatment stations. Applications for renewal of any expiring
permits have been filed and are the subject of ongoing discussions with, but
have not been finalized by, IDEM. These permits continue in effect pending
review of the current applications.
 
  Under the Federal Safe Drinking Water Act (SDWA), the Water Utilities are
subject to regulation by the EPA for the quality of water sold and treatment
techniques used to make the water potable. The EPA promulgates nationally
applicable maximum contaminant levels (MCLs) for contaminants found in
drinking water. Management believes its water utilities are currently in
compliance with all MCLs promulgated to date. The EPA has continuing
authority, however, to issue additional regulations under the SDWA. In August
1996, Congress amended the SDWA to allow the EPA more authority to weigh the
costs and benefits of regulations being considered in some, but not all,
cases. The 1996 amendments do not, however, reduce the number of new standards
previously required. Such standards promulgated could be costly and require
substantial changes in the Water Utilities' operations. The Water Utilities
would expect to recover
 
                                      33
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
the costs of such changes through their water rates; however, such recovery
may not necessarily be timely.
 
  Under a 1991 law enacted by the Indiana Legislature, a water utility may
petition the Commission for prior approval of its plans and estimated
expenditures required to comply with provisions of, and regulations under, the
Federal Clean Water Act and SDWA. Upon obtaining such approval, a water
utility may include, to the extent of its estimated costs as approved by the
Commission, such costs in its rate base for rate-making purposes and recover
its costs of developing and implementing the approved plans if statutory
standards are met. The capital costs for such new systems, equipment or
facilities or modifications of existing facilities may be included in a water
utility's rate base upon completion of construction of the project or any part
thereof. While use of this statute is voluntary on the part of a water
utility, if utilized, it should allow water utilities a greater degree of
confidence in recovering major costs incurred to comply with environmentally
related laws on a timely basis.
 
INCOME TAXES
 
  Industries uses the liability method of accounting for income taxes under
which deferred income taxes are recognized, at currently enacted income tax
rates, to reflect the tax effect of temporary differences between the
financial statement and tax bases of assets and liabilities.
 
  To the extent certain deferred income taxes of the Utilities are recoverable
or payable through future rates, regulatory assets and liabilities have been
established. Regulatory assets are primarily attributable to undepreciated
AFUDC-equity and the cumulative net amount of other income tax timing
differences for which deferred taxes had not been provided in the past, when
regulators did not recognize such taxes as costs in the rate-making process.
Regulatory liabilities are primarily attributable to the Utilities' obligation
to credit to ratepayers deferred income taxes provided at rates higher than
the current federal tax rate currently being credited to ratepayers using the
average rate assumption method and unamortized deferred investment tax
credits.
 
  The components of the net deferred income tax liability at December 31, 1997
and 1996, are as follows:
 
<TABLE>
<CAPTION>
                                                               1997      1996
                                                             --------  --------
                                                              (IN THOUSANDS)
      <S>                                                    <C>       <C>
      Deferred tax liabilities--
        Accelerated depreciation and other property
         differences.......................................  $779,223  $727,528
        AFUDC-equity.......................................    35,282    37,713
        Adjustment clauses.................................    35,253    41,181
        Take-or-pay gas costs..............................       496       877
        Other regulatory assets............................    31,862    39,458
        Reacquisition premium on debt......................    18,345    19,041
      Deferred tax assets--
        Deferred investment tax credits....................   (40,025)  (41,046)
        Removal costs......................................  (144,111) (131,718)
        FERC Order No. 636 transition costs................       --     (8,144)
        Other post retirement/postemployment benefits......   (45,613)  (43,446)
        Other, net.........................................    (3,252)  (11,987)
                                                             --------  --------
                                                              667,460   629,457
                                                             --------  --------
      Less: Deferred income taxes related to current assets
          and liabilities..................................    15,645    26,712
                                                             --------  --------
      Deferred income taxes--noncurrent....................  $651,815  $602,745
                                                             ========  ========
</TABLE>
 
                                      34
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  Federal and state income taxes as set forth in the Consolidated Statement of
Income are comprised of the following:
 
<TABLE>
<CAPTION>
                                                     1997      1996      1995
                                                   --------  --------  --------
                                                         (IN THOUSANDS)
      <S>                                          <C>       <C>       <C>
      Current income taxes--
        Federal..................................  $ 97,011  $ 80,626  $ 95,677
        State....................................    16,857    12,781    15,215
                                                   --------  --------  --------
                                                    113,868    93,407   110,892
                                                   --------  --------  --------
      Deferred income taxes, net--
        Federal..................................    (1,603)   19,282    (1,536)
        State....................................       136     1,844        56
                                                   --------  --------  --------
                                                     (1,467)   21,126    (1,480)
                                                   --------  --------  --------
      Deferred investment tax credits, net.......    (7,376)   (7,408)   (7,515)
                                                   --------  --------  --------
          Income taxes...........................   105,025   107,125   101,897
                                                   --------  --------  --------
      Income tax applicable to non-operating
       activities and equity investments.........       987      (207)   (2,698)
                                                   --------  --------  --------
          Total income taxes.....................  $106,012  $106,918  $ 99,199
                                                   ========  ========  ========
 
  A reconciliation of total tax expense to an amount computed by applying the
statutory federal income tax rate to pretax income is as follows:
<CAPTION>
                                                     1997      1996      1995
                                                   --------  --------  --------
                                                         (IN THOUSANDS)
      <S>                                          <C>       <C>       <C>
      Net income.................................  $190,849  $176,734  $175,465
      Add--Income taxes..........................   106,012   106,918    99,199
      Dividend requirements on preferred stocks
       of subsidiaries...........................     8,691     8,712     9,046
                                                   --------  --------  --------
      Income before preferred dividend
       requirements of subsidiaries and income
       taxes.....................................  $305,552  $292,364  $283,710
                                                   ========  ========  ========
      Amount derived by multiplying pretax income
       by statutory rate.........................  $106,943  $102,327  $ 99,299
      Reconciling items multiplied by the
       statutory rate:
        Book depreciation over related tax
         depreciation............................     4,072     4,621     4,018
        Amortization of deferred investment tax
         credits.................................    (7,376)   (7,408)   (7,515)
        State income taxes, net of federal income
         tax benefit.............................    11,864    10,540     9,479
        Reversal of deferred taxes provided at
         rates in excess of the current federal
         income tax rate.........................    (4,063)   (6,644)   (5,665)
        Low-income housing credits...............    (3,056)   (2,303)   (1,300)
        Nondeductible amounts related to
         amortization of intangible assets and
         plant acquisition adjustments...........     1,640       385       385
        Other, net...............................    (4,012)    5,400       498
                                                   --------  --------  --------
          Total income taxes.....................  $106,012  $106,918  $ 99,199
                                                   ========  ========  ========
</TABLE>
 
                                       35
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
PENSION PLANS
 
  Industries and its subsidiaries have four noncontributory, defined benefit
retirement plans covering the majority of their employees. Benefits under the
plans reflect the employees' compensation, years of service and age at
retirement.
 
  The plans' funded status as of December 31, 1997 and 1996 are as follows:
 
<TABLE>
<CAPTION>
                                                            1997       1996
                                                          ---------  ---------
                                                            (IN THOUSANDS)
      <S>                                                 <C>        <C>
      Vested benefit obligation.......................... $(662,235) $(541,611)
      Nonvested benefit..................................  (117,642)  (104,338)
                                                          ---------  ---------
      Accumulated benefit obligation..................... $(779,877) $(645,949)
                                                          =========  =========
      Projected benefit obligation for service rendered
       to date........................................... $(875,756) $(743,634)
      Plan assets at fair market value...................   924,856    790,978
                                                          ---------  ---------
      Plan assets in excess of projected benefit
       obligation........................................    49,100     47,344
      Unrecognized transition obligation at December 31,
       being recognized over seventeen years.............    32,107     38,062
      Unrecognized prior service cost....................    47,114     25,172
      Unrecognized gains.................................   (47,284)   (66,976)
                                                          ---------  ---------
      Prepaid pension costs.............................. $  81,037  $  43,602
                                                          =========  =========
</TABLE>
 
  The accumulated benefit obligation is the present value of future pension
benefit payments and is based on the plan benefit formula without considering
expected future salary increases. The projected benefit obligation considers
estimated future salary increases. Discount rates of 7.00% and 7.75% and rates
of increase in compensation levels of 4.5% and 5.5% were used to determine the
accumulated benefit obligation and projected benefit obligation at December
31, 1997 and 1996, respectively. The increase in the accumulated benefit
obligation at December 31, 1997 is mainly caused by the decrease in the
discount rate from 7.75% to 7.00%.
 
  The following items are the components of provisions for pensions for the
years ended December 31, 1997, 1996 and 1995:
 
<TABLE>
<CAPTION>
                                                   1997       1996      1995
                                                 ---------  --------  ---------
                                                        (IN THOUSANDS)
      <S>                                        <C>        <C>       <C>
      Service costs............................. $  14,423  $ 16,300  $  12,231
      Interest costs............................    57,568    53,477     52,511
      Actual return on plan assets..............  (126,211)  (87,407)  (135,243)
      Amortization of transition obligation.....     6,218     5,422      5,422
      Other net amortization and deferral.......    56,659    26,460     86,165
                                                 ---------  --------  ---------
                                                 $   8,657  $ 14,252  $  21,086
                                                 =========  ========  =========
</TABLE>
 
  Assumptions used in the valuation and determination of 1997, 1996 and 1995
pension expense were as follows:
 
<TABLE>
<CAPTION>
                                                               1997  1996  1995
                                                               ----- ----- -----
      <S>                                                      <C>   <C>   <C>
      Discount rate........................................... 7.75% 7.25% 8.75%
      Rate of increase in compensation levels................. 5.50% 5.50% 5.50%
      Expected long-term rate of return on assets............. 9.00% 9.00% 9.00%
</TABLE>
 
                                      36
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The plans' assets are invested primarily in common stocks, bonds and notes.
 
  IWCR participates in several industry-wide, multi-employer pension plans for
certain of its union employees at Miller. These plans provide for monthly
benefits based on length of service. Specified amounts per compensated hour
for each employee are contributed to the trustees of these plans.
Contributions of $1.7 million were made to these plans for the nine-month
period ended December 31, 1997. The relative position of each employer
participating in these plans with respect to the actuarial present value of
accumulated plan benefits and net assets available for benefits is not
available.
 
POSTRETIREMENT BENEFITS
 
  Industries provides certain health care and life insurance benefits for
retired employees. The majority of Industries' employees may become eligible
for those benefits if they reach retirement age while working for Industries.
The expected cost of such benefits is accrued during the employees' years of
service.
 
  Northern Indiana's rate-making had historically included the cost of
providing these benefits based on the related insurance premiums. On December
30, 1992, the Commission authorized the accrual method of accounting for
postretirement benefits for rate-making purposes consistent with SFAS No. 106
"Employers' Accounting for Postretirement Benefits Other than Pensions," and
authorized the deferral of the differences between the net periodic
postretirement benefits costs and the insurance premiums paid for such
benefits as a regulatory asset until such time as the accrual cost method
could be reflected in the rate-making process.
 
  On June 11, 1997, the Commission issued an order approving the inclusion of
accrual-based postretirement benefit costs in the rate-making process to be
effective February 1, 1997 for electric rates and March 1, 1997 for gas rates.
These costs include an amortization of the existing regulatory asset
consistent with the remaining amortization period for the transition
obligation. Northern Indiana discontinued its cost deferral and began
amortizing its regulatory asset concurrent with these dates.
 
  IWC's current rates include postretirement benefit costs on an accrual
basis, including amortization of the regulatory asset that arose prior to
inclusion of these costs in rates. IWC currently remits to a grantor trust
amounts collected in rates.
 
  The following table sets forth the plans accumulated postretirement benefit
obligation as of December 31, 1997 and 1996:
 
<TABLE>
<CAPTION>
                                                            1997       1996
                                                          ---------  ---------
                                                            (IN THOUSANDS)
      <S>                                                 <C>        <C>
      Postretirement benefit obligations for:
        Retirees......................................... $ (96,603) $ (76,710)
        Fully eligible active plan participants..........   (38,572)   (19,448)
        Other active plan participants...................   (88,733)  (104,632)
                                                          ---------  ---------
      Accumulated postretirement benefit obligation......  (223,908)  (200,790)
      Plan assets at fair value..........................     2,400        --
                                                          ---------  ---------
      Funded status......................................  (221,508)  (200,790)
      Unrecognized transition obligation at December 31,
       being recognized over twenty years................   176,464    175,012
      Amortization of prior service cost.................     4,195        --
      Unrecognized actuarial gain........................   (99,117)   (89,547)
                                                          ---------  ---------
      Accrued liability for postretirement benefits...... $(139,966) $(115,325)
                                                          =========  =========
</TABLE>
 
                                      37
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  A discount rate of 7% and a pre-Medicare medical trend rate of 8% declining
to a long-term rate of 5% and a discount rate of 7.75% and a pre-Medicare
medical trend rate of 9% declining to a long-term rate of 6% were used to
determine the accumulated postretirement benefit obligation at December 31,
1997 and 1996, respectively.
 
  The increase in the accumulated postretirement benefit obligation (APBO) was
primarily attributable to the inclusion of IWCR's APBO and the decrease in the
discount rate from 7.75% to 7.00%.
 
  Net periodic postretirement benefit costs, before consideration of the rate-
making discussed above, for the years ended December 31, 1997, 1996 and 1995
include the following components:
 
<TABLE>
<CAPTION>
                                                      1997     1996     1995
                                                     -------  -------  -------
                                                         (IN THOUSANDS)
      <S>                                            <C>      <C>      <C>
      Service costs................................. $ 4,904  $ 7,352  $ 6,076
      Interest costs................................  15,878   18,311   19,031
      Amortization of transition obligation over
       twenty years.................................  11,558   11,593   11,593
      Amortization of prior service cost............     279      --       --
      Amortization of unrecognized actuarial gain...  (5,844)    (554)  (2,179)
                                                     -------  -------  -------
                                                     $26,775  $36,702  $34,521
                                                     =======  =======  =======
</TABLE>
 
  The following assumptions were used to determine net periodic postretirement
benefit costs:
 
<TABLE>
<CAPTION>
                                                               1997  1996  1995
                                                               ----- ----- -----
      <S>                                                      <C>   <C>   <C>
      Discount rate........................................... 7.75% 7.25% 8.75%
      Rate of compensation increase...........................  5.5%  5.0%  5.0%
</TABLE>
 
  The pre-Medicare medical trend rates used for 1997, 1996 and 1995 were 8%
declining to a long-term rate of 6%, 9% declining to a long-term rate of 6%,
and 11% declining to a long-term rate of 7%, respectively. The effect of a 1%
increase in the assumed health care cost trend rates for each future year
would increase the accumulated postretirement benefit obligation at December
31, 1997, by approximately $27.1 million and increase the aggregate of the
service and interest cost components of plan costs by approximately $2.9
million for the year ended December 31, 1997. Amounts disclosed above could be
changed significantly in the future by changes in health care costs, work
force demographics, interest rates, or plan changes.
 
PREFERRED AND PREFERENCE STOCKS
 
  Industries is authorized to issue 20,000,000 shares of Preferred Stock,
without par value. Effective March 2, 1990, 2,000,000 shares of the
Industries' Series A Junior Participating Preferred Shares were reserved for
issuance pursuant to the Share Purchase Rights Plan described in Common
Shares. In November 1990, Industries issued and sold 350,000 shares of 8.75%
Series Cumulative Preferred Shares through a private placement for $35
million. Pursuant to mandatory redemption provisions, all the shares were
redeemed by Industries on January 12, 1996, for $100 per share plus accrued
dividends.
 
  The authorized classes of par value and no par value cumulative preferred
and preference stocks of Northern Indiana are as follows: Cumulative
Preferred--$100 par value--2,400,000 shares; Cumulative Preferred--no par
value--3,000,000 shares; Cumulative Preference--$50 par value--2,000,000
shares (none outstanding); and Cumulative Preference--no par value--
 
                                      38
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
3,000,000 shares (none issued). The authorized class of cumulative preferred
stock of IWC is $100 par value--300,000 shares.
 
  The Preferred shareholders of Northern Indiana and IWC have no voting
rights, except in the event of default on the payment of four consecutive
quarterly dividends, or as required by Indiana law to authorize additional
preferred shares, or by the Articles of Incorporation in the event of certain
merger transactions.
 
  The redemption prices at December 31, 1997, for the cumulative preferred
stock, which is redeemable solely at the option of Northern Indiana and IWC,
in whole or in part, at any time upon thirty days' notice, are as follows:
 
<TABLE>
<CAPTION>
                                                               REDEMPTION PRICE
                                                        SERIES    PER SHARE
                                                        ------ ----------------
      <S>                                               <C>    <C>
      Northern Indiana Public Service Company:
        Cumulative preferred stock--$100 par value--    4 1/4%    $  101.20
                                                        4 1/2%    $  100.00
                                                         4.22%    $  101.60
                                                         4.88%    $  102.00
                                                         7.44%    $  101.00
                                                         7.50%    $  101.00
        Cumulative preferred stock--no par value--
         adjustable rate (6.00% at December 31, 1997),
         Series A (stated value $50 per share).........           $   50.00
      Indianapolis Water Company:
        Cumulative preferred stock--$100 par value--
         rates ranging from 4% to 5%...................           $100-$105
</TABLE>
 
  The redemption prices at December 31, 1997, as well as sinking fund
provisions, for the cumulative preferred stock subject to mandatory redemption
requirements, or whose redemption is outside the control of Northern Indiana,
are as follows:
 
<TABLE>
<CAPTION>
                                                               SINKING FUND OR
         SERIES              REDEMPTION PRICE PER SHARE     MANDATORY REDEMPTION
         ------              --------------------------     --------------------
      <C>                   <C>                           <S>
      Cumulative preferred stock--
      $100 par value--
         8.85%............  $101.11, reduced periodically 12,500 shares on or
                                                          before April 1.
         8.35%............  $103.69, reduced periodically 3,000 shares on or
                                                          before July 1;
                                                          increasing to 6,000
                                                          shares beginning in
                                                          2004; noncumulative
                                                          option to double amount
                                                          each year.
         7 3/4%...........  $104.23, reduced periodically 2,777 shares on or
                                                          before December 1;
                                                          noncumulative option to
                                                          double amount each year.
      Cumulative preferred stock--no par value--
         6.50%............  $100.00 on October 14, 2002   430,000 shares on
                                                          October 14, 2002.
</TABLE>
 
                                      39
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  Sinking fund requirements with respect to redeemable preferred stocks
outstanding at December 31, 1997 for each of the four years subsequent to
December 31, 1998 are as follows:
 
<TABLE>
<CAPTION>
      YEAR ENDING DECEMBER 31,
      ------------------------
      <S>                                                           <C>
      1999......................................................... $1,827,700
      2000......................................................... $1,827,700
      2001......................................................... $1,827,700
      2002......................................................... $1,827,700
</TABLE>
 
STOCK SPLIT
 
  On December 16, 1997, the Board of Directors authorized a two-for-one split
of Industries' common stock. Shareholders received one additional common share
for each common share held. The stock split was paid February 20, 1998, to
shareholders of record at the close of business on January 30, 1998. All
references to number of common shares reported for the period including per
share amounts, stock option data and market prices of Industries' common stock
have been restated to reflect the two-for-one stock split as if it had
occurred at the beginning of the earliest period. The common share cash
dividend paid February 20, 1998, was paid on pre-split common shares.
 
COMMON SHARE DIVIDEND
 
  During the next few years, Industries expects that the great majority of
earnings available for distribution of dividends will depend upon dividends
paid to Industries by Northern Indiana. Northern Indiana's Indenture provides
that it will not declare or pay any dividends on any class of capital stock
(other than preferred or preference stock) except out of earned surplus or net
profits of Northern Indiana. At December 31, 1997, Northern Indiana had
approximately $146.3 million of retained earnings (earned surplus) available
for the payment of dividends. Future dividends will depend upon adequate
retained earnings, adequate future earnings and the absence of adverse
developments.
 
EARNINGS PER SHARE
 
  At December 31, 1997, Industries adopted SFAS No. 128 "Earnings per Share."
The adoption of this statement required Industries to present basic earnings
per share and diluted earnings per share in place of primary earnings per
share.
 
  Basic earnings per share was computed by dividing net income, reduced for
preferred dividends, by the average number of common shares outstanding during
the period. The diluted earnings per share calculation assumes conversion of
nonqualified stock options into common shares. As a result of adopting the
statement, previously reported earnings per share information was restated.
The effect of this accounting change on previously reported earnings per share
data was insignificant.
 
                                      40
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The net income, preferred dividends and shares used to compute basic and
diluted earnings per share is presented in the following table:
 
<TABLE>
<CAPTION>
                                            1997         1996         1995
                                        ------------ ------------ ------------
                                          (DOLLARS IN THOUSANDS, EXCEPT PER
                                                    SHARE AMOUNTS)
<S>                                     <C>          <C>          <C>
BASIC
Weighted Average Number of Shares:
  Average Common Shares Outstanding....  123,849,126  122,381,500  126,562,354
                                        ============ ============ ============
Net Income to be Used to Compute Basic
 Earnings per Share:
  Net Income........................... $    190,849 $    176,734 $    175,465
  Dividend requirements on Preferred
   Shares..............................          --           119        3,063
                                        ------------ ------------ ------------
  Balance Available for Common
   Shareholders........................ $    190,849 $    176,615 $    172,402
                                        ============ ============ ============
Basic Earnings per Common Share........ $       1.54 $       1.44 $       1.36
                                        ============ ============ ============
DILUTED
Weighted Average Number of Shares:
  Average Common Shares Outstanding....  123,849,126  122,381,500  126,562,354
  Dilutive effect for Nonqualified
   Stock Options.......................      374,344      323,367      238,286
                                        ------------ ------------ ------------
    Weighted Average Shares............  124,223,470  122,704,867  126,800,640
                                        ============ ============ ============
Net Income to be Used to Compute
 Diluted Earnings per Share:
  Net Income........................... $    190,849 $    176,734 $    175,465
  Dividend requirements on Preferred
   Shares..............................          --           119        3,063
                                        ------------ ------------ ------------
  Balance Available for Common
   Shareholders........................ $    190,849 $    176,615 $    172,402
                                        ============ ============ ============
Diluted Earnings per Common Share...... $       1.53 $       1.43 $       1.35
                                        ============ ============ ============
</TABLE>
 
COMMON SHARES
 
  Industries has 200,000,000 common shares authorized without par value. The
number of common shares authorized was not affected by the two-for-one stock
split.
 
 Share Purchase Rights Plan
 
  On February 27, 1990, the Board of Directors of Industries (Board) declared
a dividend distribution of one Right for each outstanding common share of
Industries to shareholders of record on March 12, 1990. The Rights are not
currently exercisable. Each Right, when exercisable, would initially entitle
the holder to purchase from Industries one two-hundredth of a share of Series
A Junior Participating Preferred Share, without par value, of Industries at a
price of $30 per one two-hundredth of a share. In certain circumstances, if an
acquirer obtained 25% of Industries' outstanding shares, or merged into
Industries or Industries into the acquirer, the Rights would entitle the
holders to purchase Industries' or the acquirer's common shares for one-half
of the market price. The Rights will not dilute Industries' common shares nor
affect earnings per share unless they become exercisable for common shares.
The Plan was not adopted in response to any specific attempt to acquire
control of Industries.
 
COMMON SHARE REPURCHASES
 
  The Board has authorized the repurchase of Industries' common shares. At
December 31, 1997, Industries had purchased approximately 44.0 million shares
since 1989 at an average price of $14.18 per share. Approximately 8.0 million
additional common shares may be repurchased under the Board's authorization.
The number of shares purchased, additional shares that may be repurchased and
average price of shares repurchased have been restated to reflect the two-for-
one stock split.
 
                                      41
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
LONG-TERM INCENTIVE PLAN
 
  Industries has two long-term incentive plans for key management employees
that were approved by shareholders on April 13, 1988 (1988 Plan) and April 13,
1994 (1994 Plan), each of which provides for the issuance of up to 5.0 million
of Industries' common shares to key employees through 1998 and 2004,
respectively. At December 31, 1997, there were 9,156 shares and 3,879,500
shares reserved for future awards under the 1988 Plan and 1994 Plan,
respectively. The 1988 Plan and 1994 Plan permit the following types of
grants, separately or in combination: nonqualified stock options, incentive
stock options, restricted stock awards, stock appreciation rights and
performance units. No incentive stock options or performance units were
outstanding at December 31, 1997. Under both Plans, the exercise price of each
option equals the market price of Industries' common shares on the date of
grant. Each option's maximum term is ten years and vests one year from the
date of grant.
 
  The stock appreciation rights (SARs) may be exercised only in tandem with
stock options on a one-for-one basis and are payable in cash, Industries'
common shares, or a combination thereof. Restricted stock awards are
restricted as to transfer and are subject to forfeiture for specific periods
from the date of grant. Restrictions on shares awarded in 1995 lapse five
years from date of grant and vesting is variable from 0% to 200% of the number
awarded, subject to specific earnings per share and stock appreciation goals.
Restrictions on shares awarded in 1997 and 1996 lapse two years from date of
grant and vesting is variable from 0% to 100% of the number awarded, subject
to specific performance goals. If a participant's employment is terminated
prior to vesting other than by reason of death, disability or retirement,
restricted shares are forfeited. There were 542,666, 524,000 and 661,000
restricted shares outstanding at December 31, 1997, 1996 and 1995,
respectively.
 
  The Industries' Nonemployee Director Stock Incentive Plan, which was
approved by shareholders, provides for the issuance of up to 200,000 of
Industries' common shares to nonemployee directors of Industries. The Plan
provides for awards of common shares which vest in 20% per year increments,
with full vesting after five years. The Plan also allows the award of
nonqualified stock options in the future. If a director's service on the Board
is terminated for any reason other than death or disability, any common shares
not vested as of the date of termination are forfeited. As of December 31,
1997, 65,500 shares were issued under the Plan.
 
  Industries accounts for these plans under Accounting Principles Board
Opinion No. 25, under which no compensation cost has been recognized for
nonqualified stock options. The compensation cost that has been charged
against net income for restricted stock awards was $1.8 million and $2.1
million for the year ending December 31, 1997 and 1996, respectively. Had
compensation cost for stock options been determined consistent with SFAS No.
123 "Accounting for Stock--Based Compensation," Industries' net income and
earnings per average common share would have been reduced to the following pro
forma amounts:
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                                DECEMBER 31,
                                                              -----------------
                                                                1997     1996
                                                              -------- --------
                                                               (IN THOUSANDS,
                                                              EXCEPT PER SHARE
                                                                  AMOUNTS)
      <S>                                                     <C>      <C>
      Net Income:
        As reported.......................................... $190,849 $176,734
        Pro forma............................................  189,999  176,087
      Earnings Per Average Common Share:
        Basic:
          As reported........................................ $   1.54 $   1.44
          Pro forma..........................................     1.53     1.43
        Diluted:
          As reported........................................ $   1.53 $   1.43
          Pro forma..........................................     1.52     1.43
</TABLE>
 
                                      42
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The fair value of each option granted used to determine pro forma net income
is estimated as of the date of grant using the Black-Scholes option pricing
model with the following weighted average assumptions used for grants in the
years ended December 31, 1997 and 1996, respectively: risk-free interest rate
of 6.29% and 6.39%, expected dividend yield of $0.87 and $0.84 per share,
expected option term of five and one-quarter years and five years and expected
volatility of 12.7% and 13.2%.
 
  Changes in outstanding shares under option and SARs for 1995, 1996 and 1997,
are as follows:
 
<TABLE>
<CAPTION>
                                       NONQUALIFIED          NONQUALIFED STOCK
                                       STOCK OPTIONS         OPTIONS WITH SARS
                                ---------------------------- --------------------
      YEAR ENDED DECEMBER 31,               WEIGHTED AVERAGE              OPTION
                1995             OPTIONS      OPTION PRICE    OPTIONS     PRICE
      -----------------------   ----------  ---------------- ---------   --------
      <S>                       <C>         <C>              <C>         <C>
      Balance at beginning of
       year...................   2,181,700       $13.33         19,800   $   5.47
        Granted...............     564,900       $16.20            --
        Exercised.............    (519,700)      $12.34         (8,600)  $   5.47
        Cancelled.............     (24,800)      $12.21            --
                                ----------                   ---------
      Balance at end of year..   2,202,100       $14.31         11,200   $   5.47
                                ==========                   =========
      Shares exercisable......   1,647,200       $13.68         11,200   $   5.47
                                ==========                   =========
      Weighted average fair
       value of options
       granted................  $     1.95
                                ==========
<CAPTION>
      YEAR ENDED DECEMBER 31,               WEIGHTED AVERAGE              OPTION
                1996             OPTIONS      OPTION PRICE    OPTIONS     PRICE
      -----------------------   ----------  ---------------- ---------   --------
      <S>                       <C>         <C>              <C>         <C>
      Balance at beginning of
       year...................   2,202,100       $14.31         11,200   $   5.47
        Granted...............     556,600       $18.91            --
        Exercised.............    (368,000)      $14.51            --
        Cancelled.............     (29,800)      $16.88            --
                                ----------                   ---------
      Balance at end of year..   2,360,900       $15.33         11,200   $   5.47
                                ==========                   =========
      Shares exercisable......   1,812,300       $14.25         11,200   $   5.47
                                ==========                   =========
      Weighted average fair
       value of options
       granted................  $     2.50
                                ==========
<CAPTION>
      YEAR ENDED DECEMBER 31,               WEIGHTED AVERAGE              OPTION
                1997             OPTIONS      OPTION PRICE    OPTIONS     PRICE
      -----------------------   ----------  ---------------- ---------   --------
      <S>                       <C>         <C>              <C>         <C>
      Balance at beginning of
       year...................   2,360,900       $15.33         11,200   $   5.47
        Granted...............     533,600       $20.64            --
        Exercised.............    (330,400)      $15.29            --
        Cancelled.............     (28,700)      $19.21            --
                                ----------                   ---------
      Balance at end of year..   2,535,400       $16.41         11,200   $   5.47
                                ==========                   =========
      Shares exercisable......   2,006,800       $15.30         11,200   $   5.47
                                ==========                   =========
      Weighted average fair
       value of options
       granted................  $     2.66
                                ==========
</TABLE>
 
 
                                      43
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The following table summarizes information about non-qualified stock options
at December 31, 1997:
 
                              OPTIONS OUTSTANDING
 
<TABLE>
<CAPTION>
                               NUMBER       WEIGHTED AVERAGE
            RANGE OF       OUTSTANDING AT      REMAINING     WEIGHTED AVERAGE
          OPTION PRICE    DECEMBER 31, 1997 CONTRACTUAL LIFE   OPTION PRICE
        ----------------  ----------------- ---------------- ----------------
        <S>               <C>               <C>              <C>
        $ 5.47 to $ 8.53        160,600        2.08 years         $ 8.34
        $11.47 to $15.16        684,000        5.35 years         $13.30
        $16.59 to $20.64      1,690,800        8.18 years         $18.44
        ----------------      ---------        ----------         ------
        $ 5.47 to $20.64      2,535,400        7.03 years         $16.41
                              =========
</TABLE>
 
                              OPTIONS EXERCISABLE
 
<TABLE>
<CAPTION>
                                         NUMBER
               RANGE OF              EXERCISABLE AT                 WEIGHTED AVERAGE
             OPTION PRICE           DECEMBER 31, 1997                 OPTION PRICE
             ------------           -----------------               ----------------
           <S>                      <C>                             <C>
           $ 5.47 to $ 8.53               160,600                        $ 8.34
           $11.47 to $15.16               684,000                        $13.30
           $16.59 to $18.91             1,162,200                        $17.44
           ----------------             ---------                        ------
           $ 5.47 to $18.91             2,006,800                        $15.30
                                        =========
</TABLE>
 
LONG-TERM DEBT
 
  The sinking fund requirements of long-term debt outstanding at December 31,
1997 (including the maturity of Northern Indiana's first mortgage bonds:
Series T, 7.50%, due April 1, 2002; Northern Indiana's medium-term notes due
from March 20, 2000 to June 12, 2002; and NDC Douglas Properties, Inc.'s notes
payable due December 22, 1999 and August 15, 2002; IWC's first mortgage bonds:
Series 5.20%, due May 1, 2001 and Series 8.00%, due December 15, 2001; and
IWCR's senior notes payable, due March 15, 2001), for each of the four years
subsequent to December 31, 1998 are as follows:
 
<TABLE>
<CAPTION>
             YEAR ENDING DECEMBER 31,
             -----------------------------------------
             <S>                          <C>
             1999........................ $  7,744,133
             2000........................ $163,164,203
             2001........................ $ 52,697,115
             2002........................ $ 63,997,185
</TABLE>
 
  Unamortized debt expense, premium and discount on long-term debt applicable
to outstanding bonds are being amortized over the lives of such bonds.
Reacquisition premiums are being deferred and amortized. These premiums are
not earning a return during the recovery period.
 
  Northern Indiana's Indenture dated August 1, 1939, as amended and
supplemented, securing the first mortgage bonds issued by Northern Indiana,
constitutes a direct first mortgage lien upon substantially all property and
franchises, other than expressly excepted property, owned by Northern Indiana.
 
 
                                      44
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  On May 28, 1997, Northern Indiana was authorized to issue and sell up to
$217,692,000 of its Medium-Term Notes, Series E, with various maturities, for
purposes of refinancing certain first mortgage bonds and medium-term notes. As
of December 31, 1997, $139.0 million of the medium-term notes had been issued
with various interest rates and maturities. The proceeds from these issuances
were used to pay short-term debt incurred to redeem its First Mortgage Bonds,
Series N, and to pay at maturity various issues of Medium-Term Notes, Series
D.
 
  IWC's first mortgage bonds are secured by its utility plant. Provisions of
trust indentures related to the 8% Series Bonds require annual sinking or
improvement payments amounting to 1/2% of the maximum aggregate amount
outstanding. As permitted, this requirement has been satisfied by substituting
a portion of permanent additions to utility plant.
 
  On February 13, 1996, Capital Markets issued $75 million of 7 3/4% Junior
Subordinated Deferrable Interest Debentures, Series A, due March 31, 2026
(Debentures) pursuant to an underwritten public offering. Proceeds from the
sale of the Debentures were used to pay short-term debt incurred to redeem on
January 12, 1996 Industries' $35 million of 8.75% Preferred Shares, pursuant
to mandatory redemption, and to pay other short-term debt of Capital Markets.
 
  Between March 27, 1997 and May 7, 1997, Capital Markets issued and sold $300
million of medium-term notes with various interest rates and maturities. The
proceeds from these issuances were used for the purchase of IWCR and to pay
outstanding short-term obligations of Capital Markets.
 
  On December 1, 1997, Capital Markets issued $75 million of 6.78% Senior
Notes due December 1, 2027. Proceeds from the sale of these notes were
primarily used to pay Capital Markets' Zero Coupon Notes which matured
December 1, 1997. The remaining balance of the proceeds will be used for
Industries' general corporate purposes.
 
  The obligations of Capital Markets are subject to a Support Agreement
between Industries and Capital Markets, under which Industries has committed
to make payments of interest and principal on Capital Markets' obligations in
the event of a failure to pay by Capital Markets. Restrictions in the Support
Agreement prohibit recourse on the part of Capital Markets' creditors against
the stock and assets of Northern Indiana. Under the terms of the Support
Agreement, in addition to the cash flow of cash dividends paid to Industries
by any of its consolidated subsidiaries, the assets of Industries, other than
the stock and assets of Northern Indiana, are available as recourse for the
benefit of Capital Markets' creditors. The carrying value of the assets of
Industries, other than the assets of Northern Indiana, reflected in the
consolidated financial statements of Industries, is approximately $1.3 billion
at December 31, 1997.
 
                                      45
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
CURRENT PORTION OF LONG-TERM DEBT
 
  At December 31, 1997 and 1996, Industries' current portion of long-term debt
due within one year was as follows:
 
<TABLE>
<CAPTION>
                                                       DECEMBER 31, DECEMBER 31,
                                                           1997         1996
                                                       ------------ ------------
                                                        (DOLLARS IN THOUSANDS)
      <S>                                              <C>          <C>
      First mortgage bonds...........................    $14,509      $ 25,747
      Medium-term notes--
        Interest rates between 5.83% and 5.95% with a
         weighted average interest rate of 5.86% and
         maturities between April 6, 1998 and April
         13, 1998....................................     35,000        40,000
      Zero Coupon Notes..............................        --         67,731
      Notes payable--
        Interest rates between 6.72% and 9.00% with a
         weighted average interest rate of 7.76% and
         maturities between January 1, 1998 and
         December 22, 1998...........................      3,612         5,033
      Term loan facility.............................        --          6,041
      Sinking funds due within one year..............      1,500         1,500
                                                         -------      --------
          Total current portion of long-term debt....    $54,621      $146,052
                                                         =======      ========
</TABLE>
 
SHORT-TERM BORROWINGS
 
  Northern Indiana and Capital Markets make use of commercial paper to fund
short-term working capital requirements.
 
  Northern Indiana has a $250 million revolving Credit Agreement with several
banks which terminates August 19, 1999. As of December 31, 1997, there were no
borrowings outstanding under this agreement. In addition, Northern Indiana has
$14.2 million in lines of credit which run to May 31, 1998. The credit pricing
of each of the lines varies from either the lending banks' commercial prime or
market rates. Northern Indiana has agreed to compensate the participating
banks with arrangements that vary from no commitment fees to a combination of
fees which are mutually satisfactory to both parties. As of December 31, 1997,
there were no borrowings under these lines of credit. The Credit Agreement and
lines of credit are also available to support the issuance of commercial
paper.
 
  Northern Indiana also has $273.5 million of money market lines of credit. As
of December 31, 1997 and 1996, $47.5 million and $79.0 million of borrowings
were outstanding under these lines of credit.
 
  Northern Indiana has a $50 million uncommitted finance facility. At December
31, 1997, there were no borrowings outstanding under this facility.
 
  Capital Markets has a $150 million revolving Credit Agreement which will
terminate August 19, 1999. This facility provides short-term financing
flexibility to Industries and also serves as the back-up instrument for a
commercial paper program. As of December 31, 1997, there were no borrowings
outstanding under this agreement.
 
                                      46
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  Capital Markets also has $130 million of money market lines of credit. As of
December 31, 1997 and 1996, $20.1 million and $27.0 million, respectively, of
borrowings were outstanding under these lines of credit.
 
  IWCR and its subsidiaries have lines of credit with banks aggregating $73.7
million. At December 31, 1997, $48.9 million of borrowings were outstanding
under these lines of credit.
 
  At December 31, 1997 and 1996, Industries' short-term borrowings were as
follows:
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31, DECEMBER 31,
                                                          1997         1996
                                                      ------------ ------------
                                                       (DOLLARS IN THOUSANDS)
      <S>                                             <C>          <C>
      Commercial paper--
        Weighted average interest rate of 6.32% at
         December 31, 1997...........................   $ 88,500     $313,205
      Notes payable--
        Issued at interest rates between 6.03% and
         8.50% with a weighted average interest rate
         of 6.22% and various maturities between
         January 5, 1998 and January 23, 1998........    116,469      106,000
      Standby loan facility..........................        --         4,949
      Revolving loan facility........................      7,670        1,831
                                                        --------     --------
          Total short-term borrowings................   $212,639     $425,985
                                                        ========     ========
</TABLE>
 
OPERATING LEASES
 
  On April 1, 1990, Northern Indiana entered into a twenty-year agreement for
the rental of office facilities from Development at a current annual rental
payment of approximately $3.4 million.
 
  The following is a schedule, by years, of future minimum rental payments,
excluding those to associated companies, required under operating leases that
have initial or remaining noncancelable lease terms in excess of one year as
of December 31, 1997:
 
<TABLE>
<CAPTION>
      YEAR ENDING DECEMBER 31,                                    (IN THOUSANDS)
      ------------------------                                    --------------
      <S>                                                         <C>
      1998.......................................................    $ 15,245
      1999.......................................................      13,968
      2000.......................................................      13,499
      2001.......................................................      13,287
      2002.......................................................      50,106
      Later years................................................      82,647
                                                                     --------
      Total minimum payments required............................    $188,752
                                                                     ========
</TABLE>
 
  The consolidated financial statements include rental expense for all
operating leases as follows:
 
<TABLE>
<CAPTION>
      YEAR ENDING DECEMBER 31,                                  (IN THOUSANDS)
      ------------------------                                  --------------
      <S>                                                       <C>
      1997.....................................................     $8,839
      1996.....................................................      8,121
      1995.....................................................      8,450
</TABLE>
 
                                      47
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
COMMITMENTS
 
  Industries estimates that approximately $1.019 billion will be expended for
construction purposes for the period from January 1, 1998 to December 31,
2002. Substantial commitments have been made by the Utilities in connection
with their programs.
 
  Northern Indiana has entered into a service agreement with Pure Air, a
general partnership between Air Products and Chemicals, Inc. and Mitsubishi
Heavy Industries America, Inc., under which Pure Air provides scrubber
services to reduce sulfur dioxide emissions for Units 7 and 8 at Bailly
Generating Station. Services under this contract commenced on June 15, 1992
with annual charges approximating $20 million. The agreement provides that,
assuming various performance standards are met by Pure Air, a termination
payment would be due if Northern Indiana terminates the agreement prior to the
end of the twenty-year contract period.
 
  Northern Indiana has entered into an agreement with IBM to perform all data
center, application development and maintenance and desktop management of
Northern Indiana.
 
PRIMARY ENERGY
 
  Primary arranges energy-related projects for large energy-intensive
facilities and has entered into certain commitments with these projects.
Primary offers large energy customers, nationwide, expertise in managing the
engineering, construction, operation and maintenance of these energy-related
projects. Primary is the parent of the following subsidiaries: Harbor Coal
Company (Harbor Coal); North Lake Energy Corporation (North Lake); Lakeside
Energy Corporation (LEC); Portside Energy Corporation (Portside); and
Cokenergy, Inc. (CE).
 
  Harbor Coal has invested in a partnership to finance, construct, own and
operate a $65 million pulverized coal injection facility which began
commercial operation in August 1993. The facility receives raw coal,
pulverizes it and delivers it to Inland Steel Company (Inland Steel) for use
in the operation of its blast furnaces. Harbor Coal is a 50% partner in the
project with an Inland Steel affiliate. Industries has guaranteed the payment
and performance of the partnership's obligations under a sale and leaseback of
a 50% undivided interest in the facility.
 
  North Lake has entered into a lease for the use of a 75-megawatt energy
facility located at Inland Steel. The facility uses steam generated by Inland
Steel to produce electricity which is delivered to Inland Steel. The facility
began commercial operation in May 1996. Industries has guaranteed North Lake's
obligations relative to the lease and certain obligations to Inland Steel
relative to the project.
 
  LEC has entered into a lease for the use of a 161-megawatt energy facility
located at USS Gary Works. The facility processes high-pressure steam into
electricity and low-pressure steam for delivery to USX Corporation-US Steel
Group. The fifteen-year tolling agreement with US Steel commenced on April 16,
1997 when the facility was placed in commercial operation. Capital Markets
guarantees LEC's security deposit obligations relative to the lease and
certain limited LEC obligations to the lessor.
 
  Portside has entered into an agreement with National Steel Corporation
(National) to utilize a new 63-megawatt energy facility at National's Midwest
Division to process natural gas into electricity, process steam and heated
water for a fifteen-year period. Portside has entered into a lease with a
third-party lessor for use of the facility. Industries has guaranteed certain
Portside obligations to the lessor. Construction of the project began in June
1996 and the facility began commercial operation on September 26, 1997.
 
                                      48
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  CE has entered into a fifteen-year service agreement with Inland Steel and
the Indiana Harbor Coke Company, LP (Harbor Coke), a subsidiary of Sun
Company, Inc. This agreement provides that CE will utilize a new energy
facility at Inland Steel's Indiana Harbor Works to scrub flue gases and
recover waste heat from the coke facility being constructed by Harbor Coke and
produce process steam and electricity from the recovered heat which will be
delivered to Inland Steel. CE intends to lease these facilities, once
constructed, from a third party. Additionally, CE has entered into an interim
agreement, which expires when the lease is established with the third party
lessor, under which CE is acting as agent to design, construct and start up
the facilities. Capital Markets anticipates guaranteeing certain CE
obligations relative to the anticipated lease. Construction of the project
began in January 1997. The facility is scheduled to be operational in June
1998.
 
  Primary has advanced approximately $107 million and $42 million, at December
31, 1997 and December 31, 1996, respectively, to the lessors of the energy
related projects discussed above. These net advances are included in "Other
Receivables" in the Consolidated Balance Sheet and as a component of operating
activities in the Consolidated Statement of Cash Flows.
 
  Primary is evaluating other potential projects with Northern Indiana
customers as well as with potential customers outside of Northern Indiana's
service territory. Projects under consideration include those which use
industrial by-product fuels and natural gas to produce electricity.
 
PURCHASE OF IWC RESOURCES CORPORATION
 
  On March 25, 1997, Industries acquired all the outstanding common stock of
IWCR for $290.5 million. Industries financed this transaction with debt of
approximately $83.0 million and issuance of approximately 10.6 million
Industries' common shares. Industries accounted for the acquisition as a
purchase. The purchase price was allocated to the assets and liabilities
acquired based on their fair values.
 
  Following is a summary of the assets acquired and liabilities assumed in the
acquisition of IWCR:
 
<TABLE>
<CAPTION>
                                                                 (IN THOUSANDS)
                                                                 --------------
      <S>                                                        <C>
      Assets acquired:
        Utility plant (net of accumulated depreciation).........    $474,845
        Other property and investments..........................      26,526
        Other current assets....................................      34,826
        Intangible assets.......................................      63,761
        Other noncurrent assets.................................      19,587
                                                                    --------
                                                                     619,545
      Less Liabilities assumed:
        Long-term debt..........................................     112,185
        Preferred stock.........................................       4,497
        Short-term borrowings...................................      28,329
        Other current liabilities...............................      23,315
        Customer advances and contributions in aid of
         construction...........................................      86,175
        Other noncurrent liabilities............................      74,507
                                                                    --------
                                                                     329,008
                                                                    --------
      Net assets acquired.......................................    $290,537
                                                                    ========
</TABLE>
 
                                      49
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  IWCR's largest subsidiary, IWC, provides water service to approximately
246,600 customers in Indianapolis and adjacent counties. In addition, IWCR
owns an underground utility locating and marking service business and one of
the nation's major gas pipeline construction companies.
 
PURCHASE OF BAY STATE GAS COMPANY
 
  On December 18, 1997, Industries and Bay State Gas Company (Bay State)
signed a definitive merger agreement under which Industries will acquire all
of the common stock of Bay State in a stock-for-stock transaction valued at
$40 per Bay State share. The transaction is valued at approximately $540
million. Bay State shareholders will have the option of taking up to 50
percent of the total purchase price in cash. Consummation of the merger is
subject to certain closing conditions, including the approval by the
shareholders of Bay State as well as the Securities and Exchange Commission,
FERC and state regulatory agencies in Massachusetts, New Hampshire and Maine.
The transaction is expected to be completed in late 1998.
 
  Bay State, one of the largest natural gas utilities in New England, provides
natural gas distribution service to more than 300,000 customers in
Massachusetts, New Hampshire and Maine. The combined company will be one of
the 10 largest natural gas distribution systems in the nation, servicing more
than 1 million gas customers. In addition, Industries and Bay State anticipate
entering into a joint marketing agreement early in 1998 that will expand the
operations of Bay State's non-regulated energy service companies.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
  The following methods and assumptions were used to estimate the fair value
of each class of financial instruments for which it is practicable to estimate
that value:
 
  Cash and cash equivalents: The carrying amount approximates fair value
because of the short maturity of those instruments.
 
  Investments: The fair value of some investments is estimated based on market
prices for those or similar investments.
 
  Long-term debt/Preferred stock: The fair value of long-term debt and
preferred stock is estimated based on the quoted market prices for the same or
similar issues or on the rates offered to Industries for securities of the
same remaining maturities. Certain premium costs associated with the early
settlement of long-term debt are not taken into consideration in determining
fair value.
 
  The carrying values and estimated fair values of Industries' financial
instruments are as follows:
 
<TABLE>
<CAPTION>
                                          DECEMBER 31, 1997   DECEMBER 31, 1996
                                         ------------------- -------------------
                                                   ESTIMATED           ESTIMATED
                                         CARRYING    FAIR    CARRYING    FAIR
                                          AMOUNT     VALUE    AMOUNT     VALUE
                                         --------- --------- --------- ---------
                                                     (IN THOUSANDS)
      <S>                                <C>       <C>       <C>       <C>
      Cash and cash equivalents........  $  30,780 $  30,780 $  26,333 $  26,333
      Investments......................     32,625    32,886    30,003    33,019
      Long-term debt (including current
       portion)........................  1,722,546 1,718,897 1,273,158 1,220,492
      Preferred stock..................    146,289   139,814   144,200   126,379
</TABLE>
 
  The majority of the long-term debt relates to utility operations. The
Utilities are subject to regulation and gains or losses may be included in
rates over a prescribed amortization period, if in fact settled at amounts
approximating those above.
 
                                      50
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
CUSTOMER CONCENTRATIONS
 
  Industries' utility subsidiaries supply natural gas, electric energy and
water. Natural gas and electric energy are supplied to the northern third of
Indiana. The Water Utilities serve central Indiana. Although the Energy
Utilities have a diversified base of residential and commercial customers, a
substantial portion of their electric and gas industrial deliveries are
dependent upon the basic steel industry. The following table shows the basic
steel industry percentage of gas revenue (including transportation services)
and electric revenue for 1997, 1996 and 1995:
 
<TABLE>
<CAPTION>
      BASIC STEEL INDUSTRY                                        1997 1996 1995
      --------------------                                        ---- ---- ----
      <S>                                                         <C>  <C>  <C>
      Gas revenue percent........................................  4%   1%   5%
      Electric revenue percent................................... 20%  22%  22%
</TABLE>
 
                                      51
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
QUARTERLY FINANCIAL DATA
  The following data summarize certain operating results for each of the
quarters of 1997 and 1996:
<TABLE>
<CAPTION>
                                                   1997 QUARTERS ENDED
                                           ------------------------------------
                                           MARCH 31  JUNE 30  SEPT. 30 DEC. 31
                                           --------  -------- -------- --------
                                            (DOLLARS IN THOUSANDS, EXCEPT PER
                                                     SHARE AMOUNTS)
      <S>                                  <C>       <C>      <C>      <C>
      Operating revenues.................. $659,950  $523,186 $596,315 $807,090
      Operating expenses..................  531,364   449,238  509,905  685,481
                                           --------  -------- -------- --------
      Operating income....................  128,586    73,948   86,410  121,609
      Other income (deductions)...........    6,367     4,518    3,326      408
      Interest and other charges..........   28,071    33,607   34,084   33,536
      Income taxes........................   36,044    16,623   19,783   32,575
                                           --------  -------- -------- --------
      Net income..........................   70,838    28,236   35,869   55,906
      Dividend requirements on preferred
       shares.............................      --        --       --       --
                                           --------  -------- -------- --------
      Balance available for common
       shareholders....................... $ 70,838  $ 28,236 $ 35,869 $ 55,906
                                           ========  ======== ======== ========
      Basic earnings per average common
       share(a)(b)........................ $   0.59  $   0.22 $   0.28 $   0.44
                                           ========  ======== ======== ========
      Diluted earnings per average common
       share(a)(b)........................ $   0.59  $   0.22 $   0.28 $   0.44
                                           ========  ======== ======== ========
      Market price for the quarter:(a)
      High................................ $ 20.125  $ 21.125 $ 21.282 $ 24.938
      Low................................. $ 19.000  $ 19.438 $ 20.344 $ 21.063
<CAPTION>
                                                   1996 QUARTERS ENDED
                                           ------------------------------------
                                           MARCH 31  JUNE 30  SEPT. 30 DEC. 31
                                           --------  -------- -------- --------
                                            (DOLLARS IN THOUSANDS, EXCEPT PER
                                                     SHARE AMOUNTS)
      <S>                                  <C>       <C>      <C>      <C>
      Operating revenues.................. $615,421  $398,742 $393,712 $580,074
      Operating expenses..................  479,359   333,390  317,088  471,804
                                           --------  -------- -------- --------
      Operating income....................  136,062    65,352   76,624  108,270
      Other income (deductions)...........      (43)    2,228    5,338    4,464
      Interest and other charges..........   28,076    28,587   28,645   29,128
      Income taxes........................   40,457    15,564   18,907   32,197
                                           --------  -------- -------- --------
      Net income..........................   67,486    23,429   34,410   51,409
                                           --------  -------- -------- --------
      Dividend requirements on preferred
       shares.............................      119       --       --       --
                                           --------  -------- -------- --------
      Balance available for common
       shareholders....................... $ 67,367  $ 23,429 $ 34,410 $ 51,409
                                           ========  ======== ======== ========
      Basic earnings per average common
       share(a)(b)........................ $   0.54  $   0.19 $   0.28 $   0.42
                                           ========  ======== ======== ========
      Diluted earnings per average common
       share(a)(b)........................ $   0.54  $   0.19 $   0.28 $   0.42
                                           ========  ======== ======== ========
      Market price for the quarter:(a)
      High................................ $ 19.563  $ 20.125 $ 20.125 $ 19.938
      Low................................. $ 17.938  $ 17.625 $ 17.875 $ 17.938
</TABLE>
- --------
(a) Amounts restated to reflect two-for-one stock split.
(b) Because of the combined mathematical effect of common shares repurchased
    and issued and the cyclical nature of net income during the year, the sum
    of earnings per share for any four quarterly periods may vary slightly
    from the earnings per share for the equivalent twelve-month period.
 
                                      52
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONCLUDED)
 
 
SEGMENTS OF BUSINESS
 
  Industries' primary businesses provide natural gas, electric energy, water
and energy/utility-related products and services. The reportable items for
these segments for the years 1997, 1996 and 1995 are as follows:
 
<TABLE>
<CAPTION>
                                               1997        1996        1995
                                            ----------  ----------  ----------
                                                     (IN THOUSANDS)
<S>                                         <C>         <C>         <C>
Operating information--
 Gas operations:
   Operating revenues.....................  $  807,239  $  799,395  $  691,402
   Operating expenses.....................     719,453     702,735     605,805
                                            ----------  ----------  ----------
   Operating income.......................      87,786      96,660      85,597
                                            ----------  ----------  ----------
 Electric operations:
   Operating revenues.....................   1,017,083   1,022,231   1,030,923
   Operating expenses.....................     705,296     721,603     723,159
                                            ----------  ----------  ----------
   Operating income.......................     311,787     300,628     307,764
                                            ----------  ----------  ----------
 Water operations:
   Operating revenues.....................      60,743         --          --
   Operating expenses.....................      42,845         --          --
                                            ----------  ----------  ----------
   Operating income                             17,898         --          --
                                            ----------  ----------  ----------
 Products and Services operations:
   Energy marketing:
     Operating revenues...................     533,810      91,869       7,892
     Operating expenses...................     533,728      95,499      16,298
                                            ----------  ----------  ----------
     Operating income.....................          82      (3,630)     (8,406)
                                            ----------  ----------  ----------
    Other:
     Operating revenues...................     167,666      74,453      39,091
     Operating expenses...................     174,666      81,803      42,169
                                            ----------  ----------  ----------
     Operating income.....................      (7,000)     (7,350)     (3,078)
                                            ----------  ----------  ----------
      Total...............................     410,553     386,308     381,877
 Other income, net........................      14,619      11,986       1,471
 Less--interest and other charges.........     129,298     114,435     105,986
 Less--income taxes.......................     105,025     107,125     101,897
                                            ----------  ----------  ----------
Net income per Consolidated Statement of
 Income...................................     190,849     176,734     175,465
Dividend requirements on preferred shares.         --          119       3,063
                                            ----------  ----------  ----------
Balance available for common shareholders.  $  190,849  $  176,615  $  172,402
                                            ==========  ==========  ==========
Other information--
 Depreciation and amortization expense:
   Electric...............................  $  153,843  $  146,444  $  139,432
   Gas....................................      73,017      68,584      61,705
   Water..................................       5,311         --          --
   Products and Services..................      17,633      18,965       5,822
                                            ----------  ----------  ----------
      Total...............................  $  249,804  $  233,993  $  206,959
                                            ==========  ==========  ==========
 Construction expenditures:
   Electric...............................  $  115,012  $  146,659  $  132,273
   Gas....................................      64,009      61,222      60,693
   Water..................................      39,910         --          --
                                            ----------  ----------  ----------
      Total...............................  $  218,931  $  207,881  $  192,966
                                            ==========  ==========  ==========
Investment information--
 Identifiable assets(a):
   Electric...............................  $2,507,905  $2,575,995  $2,586,122
   Gas....................................     965,473   1,006,270     890,192
   Water..................................     510,177         --          --
                                            ----------  ----------  ----------
      Total...............................   3,983,555   3,582,265   3,476,314
 Other corporate assets...................     953,478     706,618     523,206
                                            ----------  ----------  ----------
      Total assets........................  $4,937,033  $4,288,883  $3,999,520
                                            ==========  ==========  ==========
</TABLE>
- --------
(a) Utility plant less accumulated provision for depreciation and
    amortization, materials and supplies, electric production fuel, natural
    gas in storage, fuel and gas cost adjustment clauses, unamortized R. M.
    Schahfer Units 17 and 18 carrying charges and deferred depreciation,
    Bailly scrubber carrying charges and deferred depreciation, and FERC Order
    No. 636 transition costs.
 
                                      53
<PAGE>
 
                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Board of Directors of NIPSCO Industries, Inc.:
 
  We have audited the accompanying consolidated balance sheet and consolidated
statements of capitalization and long-term debt of NIPSCO Industries, Inc. (an
Indiana corporation) and subsidiaries as of December 31, 1997 and 1996, and
the related consolidated statements of income, common shareholders' equity and
cash flows for each of the three years in the period ended December 31, 1997.
These consolidated financial statements and the schedules referred to below
are the responsibility of Industries' management. Our responsibility is to
express an opinion on these consolidated financial statements and schedules
based on our audits.
 
  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
  In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of NIPSCO
Industries, Inc. and subsidiaries as of December 31, 1997 and 1996, and the
results of their operations and their cash flows for each of the three years
in the period ended December 31, 1997, in conformity with generally accepted
accounting principles.
 
  Our audits were made for the purpose of forming an opinion on the basic
financial statements taken as a whole. The schedules appearing in Item
14(a)(2) listed on page 61 are presented for purposes of complying with the
Securities and Exchange Commission's rules and are not part of the basic
financial statements. These schedules have been subjected to the auditing
procedures applied in the audits of the basic financial statements and, in our
opinion, fairly state in all material respects the financial data required to
be set forth therein in relation to the basic financial statements taken as a
whole.
 
                                          Arthur Andersen LLP
 
Chicago, Illinois
January 30, 1998
 
                                      54
<PAGE>
 
 
                       SELECTED SUPPLEMENTAL INFORMATION
 
<TABLE>
<CAPTION>
GAS STATISTICS
- --------------
                                                   YEAR ENDED DECEMBER 31,
                                             -----------------------------------
                                                1997        1996        1995
                                             ----------- ----------- -----------
<S>                                          <C>         <C>         <C>
Operating Revenues ($000's):
 Residential (including home heating)....... $   479,461 $   422,646 $   407,233
 Commercial.................................     164,359     141,193     132,647
 Industrial.................................      78,531      70,062      63,355
 Gas transported for others.................      43,226      33,536      64,255
 Other*.....................................      41,662     131,958      23,912
                                             ----------- ----------- -----------
   Total.................................... $   807,239 $   799,395 $   691,402
                                             =========== =========== ===========
Deliveries in dth (000's):
 Residential (including home heating).......      79,816      84,146      77,536
 Commercial.................................      31,640      32,164      29,268
 Industrial.................................      16,989      17,732      16,260
 Gas transported for others.................     203,728     194,397     191,571
 Other......................................      14,201       8,263       1,301
                                             ----------- ----------- -----------
   Total....................................     346,374     336,702     315,936
                                             =========== =========== ===========
Customers Served--End of Year:
 Residential (including home heating).......     669,833     659,742     648,207
 Commercial.................................      55,124      54,300      53,254
 Industrial.................................       4,408       4,234       4,185
 Other......................................          84          80          75
                                             ----------- ----------- -----------
   Total....................................     729,449     718,356     705,721
                                             =========== =========== ===========
- --------
*Includes deferred gas cost revenue of $(11,075), $95,843 and $11,351,
  respectively.
 
<CAPTION>
ELECTRIC STATISTICS
- -------------------
                                                   YEAR ENDED DECEMBER 31,
                                             -----------------------------------
                                                1997        1996        1995
                                             ----------- ----------- -----------
<S>                                          <C>         <C>         <C>
Operating Revenues ($000's):
 Residential................................ $   272,619 $   269,906 $   276,575
 Commercial.................................     253,299     247,808     244,776
 Industrial.................................     416,741     428,273     430,579
 Street lighting............................       8,697       8,549       8,428
 Sales for resale...........................      44,958      43,272      40,425
 Other**....................................      20,769      24,423      30,140
                                             ----------- ----------- -----------
   Total.................................... $ 1,017,083 $ 1,022,231 $ 1,030,923
                                             =========== =========== ===========
Sales in kilowatt-hours (000's):
 Residential................................   2,723,990   2,700,234   2,797,247
 Commercial.................................   2,974,703   2,886,940   2,863,879
 Industrial.................................   8,971,926   9,318,353   9,552,777
 Street lighting............................      57,764      56,413      55,515
 Sales for resale...........................   1,178,847   1,678,346   1,574,041
 Other......................................      84,935     100,265      80,894
                                             ----------- ----------- -----------
   Total....................................  15,992,165  16,740,551  16,924,353
                                             =========== =========== ===========
Customers Served--End of Year:
 Residential................................     368,907     365,011     360,425
 Commercial.................................      43,802      42,911      42,228
 Industrial.................................       2,764       2,725       2,697
 Other......................................         861         874         873
                                             ----------- ----------- -----------
   Total....................................     416,334     411,521     406,223
                                             =========== =========== ===========
</TABLE>
- --------
**Includes deferred fuel cost revenue of $(5,223), $1,980 and $8,688,
  respectively.
 
                                       55
<PAGE>
 
<TABLE>
<CAPTION>
WATER STATISTICS
- ----------------
                                                                 YEAR ENDED
                                                                DECEMBER 31,
                                                              -----------------
                                                               1997   1996 1995
                                                              ------- ---- ----
<S>                                                           <C>     <C>  <C>
Operating Revenues ($000's):***
 Residential................................................. $39,570 $--  $--
 Commercial..................................................  14,763  --   --
 Industrial..................................................   3,015  --   --
 Other.......................................................   3,395  --   --
                                                              ------- ---- ----
   Total..................................................... $60,743 $--  $--
                                                              ======= ==== ====
Sales in millions of gallons (000's):***
 Residential.................................................  18,095  --   --
 Commercial..................................................  10,345  --   --
 Industrial..................................................   3,310  --   --
 Other.......................................................   3,816  --   --
                                                              ------- ---- ----
   Total.....................................................  35,566  --   --
                                                              ======= ==== ====
Customers Served--End of Year:
 Residential................................................. 225,627  --   --
 Commercial..................................................  17,083  --   --
 Industrial..................................................     347  --   --
 Other.......................................................   3,586  --   --
                                                              ------- ---- ----
   Total..................................................... 246,643  --   --
                                                              ======= ==== ====
</TABLE>
- --------
***Amounts are for the period April 1997 through December 1997.
 
                                       56
<PAGE>
 
<TABLE>
<CAPTION>
                                             YEAR ENDED DECEMBER 31,
                                      ----------------------------------------
                                          1997          1996          1995
                                      ------------  ------------  ------------
<S>                                   <C>           <C>           <C>
Operating Revenues
  Gas ($000's)....................... $    807,239  $    799,395  $    691,402
  Electric ($000's)..................    1,017,083     1,022,231     1,030,923
  Water ($000's).....................       60,743           --            --
  Products and Services ($000's).....      701,476       166,322        46,983
                                      ------------  ------------  ------------
    Total Operating Revenues
     ($000's)........................ $  2,586,541  $  1,987,948  $  1,769,308
Operating Margin ($000's)............ $  1,210,927  $  1,115,965  $  1,074,820
Operating Income ($000's)............ $    410,553  $    386,308  $    381,877
Net Income ($000's).................. $    190,849  $    176,734  $    175,465
Shares outstanding at year end(a)....  124,312,664   119,611,322   124,759,192
Number of common shareholders........       37,373        35,339        37,299
Basic earnings per average common
 share(a)............................ $       1.54  $       1.44  $       1.36
Diluted earnings per average common
 share(a)............................ $       1.53  $       1.43  $       1.35
Return on average common equity......         16.1%         15.9%         15.5%
Times interest earned (pre-tax)......         3.43          3.55          3.75
Dividends paid per share(a).......... $       0.90  $       0.84  $       0.78
Dividend payout ratio................         58.4%         58.3%         57.4%
Market values during the year:(a)
  High............................... $     24.938  $     20.125  $     19.250
  Low................................ $     19.000  $     17.625  $     14.625
  Close.............................. $     24.719  $     19.813  $     19.125
Book value of common shares(a)....... $      10.17  $       9.20  $       9.00
Market-to-book ratio at year end(a)..        243.1%        215.4%        212.5%
Total Assets ($000's)................ $  4,937,033  $  4,288,883  $  3,999,520
Utility construction expenditures
 ($000's)(b)......................... $    218,931  $    207,881  $    192,966
Capitalization:
  Common shareholders' equity
   ($000's).......................... $  1,264,788  $  1,100,501  $  1,122,215
  Preferred and preference stock-
    Northern Indiana Public Service
     Company:
      Series without mandatory
       redemption provision ($000's). $     81,123  $     81,126  $     81,325
      Series with mandatory
       redemption provisions
       ($000's)...................... $     58,841  $     61,246  $     63,651
    NIPSCO Industries, Inc.:
      Series with mandatory
       redemption provision ($000's). $        --   $        --   $     35,000
    Indianapolis Water Company:
      Series without mandatory
       redemption provision ($000's). $      4,497  $        --   $        --
Long-Term debt ($000's).............. $  1,667,925  $  1,127,106  $  1,175,728
                                      ------------  ------------  ------------
    Total Capitalization ($000's).... $  3,077,174  $  2,369,979  $  2,477,919
Number of employees..................        5,984         4,168         4,356
</TABLE>
- --------
Notes: (a) Amounts restated to reflect two-for-one stock split.
(b) Including AFUDC.
 
                                       57
<PAGE>
 
<TABLE>
<CAPTION>
                                       YEAR ENDED DECEMBER 31,
                         ------------------------------------------------------
                             1994          1993          1992          1991
                         ------------  ------------  ------------  ------------
<S>                      <C>           <C>           <C>           <C>
Operating Revenues
  Gas ($000's).........  $    681,909  $    714,229  $    666,221  $    601,920
  Electric ($000's)....       994,492       963,643       916,135       933,241
  Water ($000's).......           --            --            --            --
  Products and Services
   ($000's)............        91,628        59,387           --            --
                         ------------  ------------  ------------  ------------
    Total Operating
     Revenues ($000's).  $  1,768,029  $  1,737,259  $  1,582,356  $  1,535,161
Operating Margin
($000's)...............  $  1,014,566  $  1,001,542  $    927,089  $    919,951
Operating Income
($000's)...............  $    353,452  $    355,918  $    246,217  $    254,354
Net Income ($000's)....  $    163,987  $    156,140  $    136,648  $    133,388
Shares outstanding at
year end(a)............   127,810,778   131,657,676   131,516,700   133,343,230
Number of common
shareholders...........        39,172        41,038        38,097        39,346
Basic earnings per
average common
share(a)...............  $       1.24  $       1.15  $       1.00  $       0.97
Diluted earnings per
 average common
 share(a)..............  $       1.23  $       1.15  $       0.99  $       0.96
Return on average
common equity..........          14.6%         14.4%         13.1%         12.9%
Times interest earned
(pre-tax)..............          3.56          3.47          3.17          2.93
Dividends paid per
share(a)...............  $       0.72  $       0.66  $       0.62  $       0.58
Dividend payout ratio..          58.1%         57.4%         62.0%         59.8%
Market values during
the year:(a)
  High.................  $     16.500  $     17.438  $     13.313  $     13.500
  Low..................  $     13.063  $     13.063  $     11.250  $      9.250
  Close................  $     14.875  $     16.438  $     13.250  $     12.875
Book value of common
shares(a)..............  $       8.67  $       8.31  $       7.87  $       7.59
Market-to-book ratio at
year end(a)............         171.6%        197.8%        168.4%        169.6%
Total Assets ($000's)..  $  3,947,138  $  3,912,324  $  3,807,941  $  3,647,557
Utility construction
expenditures
($000's)(b)............  $    202,245  $    180,852  $    172,329  $    168,958
Capitalization:
  Common shareholders'
   equity ($000's).....  $  1,107,848  $  1,094,672  $  1,034,530  $  1,011,666
  Preferred and
   preference stock-
    Northern Indiana
     Public Service
     Company:
      Series without
       mandatory
       redemption
       provision
       ($000's)........  $     86,389  $     97,753  $     97,917  $     98,710
      Series with
       mandatory
       redemption
       provisions
       ($000's)........  $     66,057  $     68,462  $     70,668  $     53,978
    NIPSCO Industries,
     Inc.:
      Series with
       mandatory
       redemption
       provision
       ($000's)........  $     35,000  $     35,000  $     35,000  $     35,000
    Indianapolis Water
     Company:
      Series without
       mandatory
       redemption
       provision
       ($000's)........  $        --   $        --   $        --   $        --
Long-Term debt
($000's)...............  $  1,180,338  $  1,192,500  $  1,054,454  $  1,068,708
                         ------------  ------------  ------------  ------------
    Total
     Capitalization
     ($000's)..........  $  2,475,632  $  2,488,387  $  2,292,569  $  2,268,062
Number of employees....         4,441         4,602         4,648         4,600
</TABLE>
- -------
Notes: (a) Amounts restated to reflect two-for-one stock split.
(b) Including AFUDC.
 
                                       58
<PAGE>
 
<TABLE>
<CAPTION>
                                       YEAR ENDED DECEMBER 31,
                         ---------------------------------------------------------
                             1990          1989             1988          1987
                         ------------  ------------     ------------  ------------
<S>                      <C>           <C>              <C>           <C>
Operating Revenues
  Gas ($000's).........  $    625,159  $    677,262     $    620,723  $    581,130
  Electric ($000's)....       895,836       882,303          903,461       870,499
  Water ($000's).......           --            --               --            --
  Products and Services
   ($000's)............           --            --               --            --
                         ------------  ------------     ------------  ------------
    Total Operating
     Revenues ($000's).  $  1,520,995  $  1,559,565     $  1,524,184  $  1,451,629
Operating Margin
 ($000's)..............  $    885,262  $    900,035     $    863,213  $    777,573
Operating Income
 ($000's)..............  $    247,777  $    252,807     $    257,923  $    192,415
Net Income ($000's)....  $    125,361  $     72,112(c)  $    103,449  $     38,876
Shares outstanding at
 year end(a)...........   137,748,458   138,738,984      146,620,420   146,486,200
Number of common
 shareholders..........        41,285        43,763           47,324        50,074
Basic earnings per
 average common
 share(a)..............  $       0.90  $       0.50(c)  $       0.70  $       0.26
Diluted earnings per
 average common
 share(a)..............  $       0.89  $       0.49(c)  $       0.70  $       0.26
Return on average
 common equity.........          12.7%          7.2%(c)         10.4%          4.1%
Times interest earned
 (pre-tax).............          2.81          2.02(c)          2.38          1.65
Dividends paid per
 share(a)..............  $       0.52  $       0.42     $       0.30  $       0.08
Dividend payout ratio..          57.8%         84.0%(c)         42.9%         30.8%
Market values during
 the year:(a)
  High.................  $      9.625  $      9.813     $      7.063  $      6.500
  Low..................  $      7.875  $      6.563     $      4.313  $      4.000
  Close................  $      9.438  $      9.688     $      6.938  $      4.250
Book value of common
 shares(a).............  $       7.30  $       6.96     $       7.02  $       6.56
Market-to-book ratio at
 year end(a)...........         129.3%        139.2%            98.9%         64.8%
Total Assets ($000's)..  $  3,625,181  $  3,657,718     $  3,684,721  $  3,821,690
Utility construction
 expenditures
 ($000's)(b)...........  $    152,280  $    150,786     $    116,874  $    156,750
Capitalization:
  Common shareholders'
   equity ($000's).....  $  1,005,982  $    965,437     $  1,028,554  $    961,562
  Preferred and
   preference stock-
    Northern Indiana
     Public Service
     Company:
      Series without
       mandatory
       redemption
       provision
       ($000's)........  $     99,374  $     99,874     $     99,937  $    191,392
      Series with
       mandatory
       redemption
       provisions
       ($000's)........  $     59,358  $     66,309     $     75,189  $    105,395
    NIPSCO Industries,
     Inc.:
      Series with
       mandatory
       redemption
       provision
       ($000's)........  $     35,000  $        --      $        --   $        --
    Indianapolis Water
     Company:
      Series without
       mandatory
       redemption
       provision
       ($000's)........  $        --   $        --      $        --   $        --
Long-Term debt
 ($000's)..............  $  1,165,682  $  1,261,760     $  1,308,303  $  1,401,326
                         ------------  ------------     ------------  ------------
    Total
     Capitalization
     ($000's)..........  $  2,365,396  $  2,393,380     $  2,511,983  $  2,659,675
Number of employees....         4,547         4,825            4,946         5,172
</TABLE>
- -------
Notes: (a) Amounts restated to reflect two-for-one stock split.
(b) Including AFUDC.
(c)   Earnings per share were reduced by $0.36 due to the $82.0 million refund,
      less associated tax benefits of $30.3 million, related to the Bailly N1
      generating unit.
 
                                       59
<PAGE>
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
      FINANCIAL DISCLOSURE.
 
  None.
 
                                   PART III
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.
 
  Information regarding executive officers is included as a supplemental item
at the end of Item 4 of Part I of this Form 10-K.
 
  Information regarding directors is included at pages 2-7 in the Notice of
Annual Meeting and Proxy Statement dated March 9, 1998, for Annual Meeting to
be held April 8, 1998, which information is incorporated by reference.
 
ITEM 11. EXECUTIVE COMPENSATION.
 
  Information regarding executive compensation is included at pages 9-12 and
14-20 in the Notice of Annual Meeting and Proxy Statement dated March 9, 1998,
for Annual Meeting to be held April 8, 1998, which information is incorporated
by reference.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.
 
  Information regarding security ownership of certain beneficial owners and
management is included at pages 8-9 in the Notice of Annual Meeting and Proxy
Statement dated March 9, 1998, for Annual Meeting to be held April 8, 1998,
which information is incorporated by reference.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.
 
  Information regarding certain relationships and related transactions is
included at page 7 in the Notice of Annual Meeting and Proxy Statement dated
March 9, 1998, for Annual Meeting to be held April 8, 1998, which information
is incorporated by reference.
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K.
 
  (a)  (1) The Financial Statements filed herewith as a part of this report on
       Form 10-K are as follows:
 
    Consolidated Financial Statements -
    Consolidated Statement of Income for the years ended December 31, 1997,
    1996 and 1995
    Consolidated Balance Sheet at December 31, 1997 and 1996
    Consolidated Statement of Capitalization at December 31, 1997 and 1996
    Consolidated Statement of Long-term Debt at December 31, 1997 and 1996
    Consolidated Statement of Cash Flows for the years ended December 31,
     1997, 1996 and 1995
    Consolidated Statement of Common Shareholders' Equity for the years
     ended December 31, 1997, 1996 and 1995
    Notes to Consolidated Financial Statements
    Report of Independent Public Accountants
    Selected Supplemental Information
 
                                      60
<PAGE>
 
    (2) The following is a list of the Financial Statement Schedules filed
    herewith as part of this report on Form 10-K:
 
<TABLE>
<CAPTION>
 SCHEDULE                                                      PAGES OF
  NUMBER                   DESCRIPTION                         1997 10-K
 --------                  -----------                  -----------------------
 <C>      <S>                                           <C>
                    Condensed Financial Information of
    I     Registrant..................................  63, 64, 65, 66, 67 & 68
    II    Valuation and Qualifying Accounts...........        69, 70, 71
</TABLE>
 
    (3) Exhibits-
      The exhibits filed herewith as a part of this report on Form 10-K are
      listed on the Exhibit Index included on pages 72-75. Each management
      contract or compensatory plan or arrangement of Industries listed on
      the Exhibit Index is separately identified by an asterisk.
 
  (b) Reports on Form 8-K
    None
 
                                      61
<PAGE>
 
                                  SIGNATURES
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THE
REGISTRANT HAS DULY CAUSED THIS REPORT TO BE SIGNED ON ITS BEHALF BY THE
UNDERSIGNED, HEREUNTO DULY AUTHORIZED.
 
                                          NIPSCO Industries, Inc.
                                           (Registrant)
 
           March 24, 1998                            /s/ Gary L. Neale
Date ________________________________     By___________________________________
                                            Gary L. Neale, Its Chairman and
                                            President
 
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THIS
REPORT HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS ON BEHALF OF THE
REGISTRANT AND IN THE CAPACITIES AND ON THE DATES INDICATED.
 
<TABLE>
<CAPTION>
             SIGNATURE                           TITLE                    DATE
             ---------                           -----                    ----
 
 
<S>                                  <C>                           <C>
       /s/ Gary L. Neale             Chairman, President,
____________________________________  Principal Executive Officer
           Gary L. Neale              and Director
 
      /s/ Stephen P. Adik            Executive Vice President,
____________________________________  Principal Financial Officer
          Stephen P. Adik             and Principal Accounting
                                      Officer
 
     /s/ Steven C. Beering           Director
____________________________________
         Steven C. Beering
 
      /s/ James T. Morris            Director
____________________________________
          James T. Morris
 
      /s/ Arthur J. Decio            Director
____________________________________
          Arthur J. Decio
 
    /s/ Ernestine M. Raclin          Director                        March 24, 1998
____________________________________
        Ernestine M. Raclin
 
                                     Director
____________________________________
          Denis E. Ribordy
 
      /s/ Ian M. Rolland             Director
____________________________________
           Ian M. Rolland
 
     /s/ Edmund A. Schroer           Director
____________________________________
         Edmund A. Schroer
 
     /s/ John W. Thompson            Director
____________________________________
          John W. Thompson
      /s/ Robert J. Welsh            Director
____________________________________
          Robert J. Welsh
</TABLE>
 
                                      62
<PAGE>
 
                    NIPSCO INDUSTRIES, INC. AND SUBSIDIARIES
 
                                   SCHEDULE I
 
                 CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                                 BALANCE SHEET
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                               ----------------------
                                                                  1997        1996
                                                               ----------  ----------
                                                                    (DOLLARS IN
                                                                    THOUSANDS)
                            ASSETS
                            ------
<S>                                                            <C>         <C>
Property:
  Property in service......................................... $    2,625  $    2,620
  Construction work in progress...............................      5,147          76
  Less: accumulated depreciation..............................        713         541
                                                               ----------  ----------
    Total property............................................      7,059       2,155
                                                               ----------  ----------
  Investments (principally investments in wholly-owned subsid-
   iaries)....................................................  1,407,789   1,097,173
                                                               ----------  ----------
Current Assets:
  Cash and cash equivalents...................................      6,172         455
  Amounts receivable from subsidiaries........................     85,056      75,508
  Prepayments.................................................     21,971       3,647
                                                               ----------  ----------
    Total current assets......................................    113,199      79,610
                                                               ----------  ----------
Other (principally notes receivable from associated
 companies)...................................................    323,672     303,373
                                                               ----------  ----------
                                                               $1,851,719  $1,482,311
                                                               ==========  ==========
<CAPTION>
                CAPITALIZATION AND LIABILITIES
                ------------------------------
<S>                                                            <C>         <C>
Capitalization:
  Common shares............................................... $  870,930  $  870,930
  Additional paid-in capital..................................     89,768      32,868
  Retained earnings...........................................    667,790     591,370
  Less: Treasury shares.......................................    363,943     392,995
    Other.....................................................     (1,813)      1,532
    Currency translation adjustment...........................      1,570         140
                                                               ----------  ----------
      Total capitalization....................................  1,264,788   1,100,501
                                                               ----------  ----------
Current Liabilities:
  Dividends declared on common and preferred stock............     29,535      27,053
  Amounts payable to subsidiaries.............................     31,818      30,340
  Other.......................................................      2,589       5,085
                                                               ----------  ----------
      Total current liabilities...............................     63,942      62,478
                                                               ----------  ----------
Other (principally notes payable to associated companies).....    522,989     319,332
                                                               ----------  ----------
Commitments and Contingencies (Note 3)
                                                               $1,851,719  $1,482,311
                                                               ==========  ==========
</TABLE>
 
 The accompanying notes to condensed financial statements are an integral part
                               of this statement.
 
                                       63
<PAGE>
 
                    NIPSCO INDUSTRIES, INC. AND SUBSIDIARIES
 
                                   SCHEDULE I
 
                 CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                              STATEMENT OF INCOME
 
<TABLE>
<CAPTION>
                                             YEAR ENDED DECEMBER 31,
                                      ----------------------------------------
                                          1997          1996          1995
                                      ------------  ------------  ------------
                                              (DOLLARS IN THOUSANDS)
<S>                                   <C>           <C>           <C>
Equity in net earnings of
 subsidiaries........................ $    202,680  $    185,106  $    180,827
                                      ------------  ------------  ------------
Other income (deductions):
  Administrative and general expense.      (12,117)      (10,167)       (9,854)
  Interest income....................       27,272        21,443        15,575
  Interest expense...................      (37,652)      (20,604)      (12,274)
  Other, net.........................         (143)        1,543          (663)
                                      ------------  ------------  ------------
                                           (22,640)       (7,785)       (7,216)
                                      ------------  ------------  ------------
Net income before income taxes.......      180,040       177,321       173,611
Income taxes.........................      (10,809)          587        (1,854)
                                      ------------  ------------  ------------
Net income...........................      190,849       176,734       175,465
Dividend requirements on preferred
 shares..............................          --            119         3,063
                                      ------------  ------------  ------------
Balance available for common
 shareholders........................ $    190,849  $    176,615  $    172,402
                                      ============  ============  ============
Average common shares outstanding--
 basic*..............................  123,849,126   122,381,500   126,562,354
Basic earnings per average common
 share*.............................. $       1.54  $       1.44  $       1.36
                                      ============  ============  ============
Diluted earnings per average common
 share*.............................. $       1.53  $       1.43  $       1.35
                                      ============  ============  ============
</TABLE>
- --------
*Amounts restated to reflect two-for-one stock split paid February 20, 1998, to
   shareholders of record at the close of business on January 30, 1998.
 
 
 
 The accompanying notes to condensed financial statements are an integral part
                               of this statement.
 
                                       64
<PAGE>
 
                    NIPSCO INDUSTRIES, INC. AND SUBSIDIARIES
 
                                   SCHEDULE I
 
                 CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                            STATEMENT OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                    YEAR ENDED DECEMBER 31,
                                                 -------------------------------
                                                   1997       1996       1995
                                                 ---------  ---------  ---------
                                                    (DOLLARS IN THOUSANDS)
<S>                                              <C>        <C>        <C>
Net cash provided by operating activities......  $ 147,712  $ 183,867  $ 184,300
                                                 ---------  ---------  ---------
Cash flows provided by (used in) investing
 activities:
  Acquisition of IWC Resources, net of cash
   acquired....................................   (288,932)       --         --
  Acquisition of minority interest.............     (5,641)       --         --
  Capital expenditures.........................     (5,000)       (22)      (100)
  Sale of property.............................         (5)        83        935
                                                 ---------  ---------  ---------
    Net cash provided by (used in) investing
     activities................................   (299,578)        61        835
                                                 ---------  ---------  ---------
Cash flows provided by (used in) financing
 activities:
  Issuance of common shares....................    218,566      5,716      7,389
  Increase in notes payable to subsidiaries....    205,396    133,298     41,211
  Increase (decrease) in notes receivable from
   subsidiaries................................    (21,709)   (82,740)   (58,479)
  Redemption of cumulative preferred shares
   with mandatory redemption provisions........        --     (35,000)       --
  Cash dividends paid on common shares.........   (111,593)  (103,190)   (99,043)
  Cash dividends paid on preferred shares......        --        (766)    (3,063)
  Acquisition of treasury shares...............   (133,077)  (105,498)   (69,183)
                                                 ---------  ---------  ---------
    Net cash provided by (used in) financing
     activities................................    157,583   (188,180)  (181,168)
                                                 ---------  ---------  ---------
Net increase (decrease) in cash and cash
 equivalents...................................      5,717     (4,252)     3,967
Cash and cash equivalents at beginning of year.        455      4,707        740
                                                 ---------  ---------  ---------
Cash and cash equivalents at end of year.......  $   6,172  $     455  $   4,707
                                                 =========  =========  =========
</TABLE>
 
 
 
 The accompanying notes to condensed financial statements are an integral part
                               of this statement.
 
                                       65
<PAGE>
 
                   NIPSCO INDUSTRIES, INC. AND SUBSIDIARIES
 
                                  SCHEDULE I
 
                 CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                    NOTES TO CONDENSED FINANCIAL STATEMENTS
 
1. DIVIDENDS FROM SUBSIDIARIES
 
  Cash dividends paid to NIPSCO Industries, Inc. (Industries) by its
consolidated subsidiaries were (in thousands of dollars): $188,175, $184,750
and $183,475 in 1997, 1996, and 1995, respectively.
 
2. SUPPORT AGREEMENT
 
  The obligations of NIPSCO Capital Markets, Inc. (Capital Markets) are
subject to a Support Agreement between Industries and Capital Markets, under
which Industries has committed to make payments of interest and principal on
Capital Markets' obligations in the event of a failure to pay by Capital
Markets. Restrictions in the Support Agreement prohibit recourse on the part
of Capital Markets' creditors against the stock and assets of Northern Indiana
Public Service Company (Northern Indiana) which are owned by Industries. Under
the terms of the Support Agreement, in addition to the cash flow of cash
dividends paid to Industries by any of its consolidated subsidiaries, the
assets of Industries, other than the stock and assets of Northern Indiana, are
available as recourse for the benefit of Capital Markets' creditors. The
carrying value of the assets of Industries, other than the assets of Northern
Indiana, reflected in the consolidated financial statements of Industries, was
approximately $1.3 billion at December 31, 1997.
 
3. CONTINGENCIES
 
  Industries and its subsidiaries are parties to various pending proceedings,
including suits and claims against them for personal injury, death and
property damage. Such proceedings and suits, and the amounts involved are
routine litigation and proceedings for the kinds of businesses conducted by
Industries and its subsidiaries, except as described under the captions "NESI
Energy Marketing Canada Ltd. Litigation," and "Environmental Matters" in the
Notes to Consolidated Financial Statements in Item 8, which notes are
incorporated by reference. No other material legal proceedings against
Industries or its subsidiaries are pending or, to the knowledge of Industries,
contemplated by governmental authorities or other parties.
 
4. CHANGES IN ACCOUNTING PRINCIPLES
 
  At December 31, 1997, Industries adopted Statement of Financial Accounting
Standards (SFAS) No. 128 "Earnings per Share." As a result of adopting SFAS
No. 128, previously reported earnings per share information has been restated.
The effect of this accounting change on previously reported earnings per share
data is insignificant.
 
                                      66
<PAGE>
 
  The net income, preferred dividends and shares used to compute basic and
diluted earnings per share is presented in the following table:
 
<TABLE>
<CAPTION>
                                   1997             1996             1995
                             ---------------- ---------------- ----------------
                              (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                          <C>              <C>              <C>
BASIC
Weighted Average Number of
 Shares:
  Average Common Shares
   Outstanding.............       123,849,126      122,381,500      126,562,354
                             ================ ================ ================
Net Income to be Used to
 Compute Basic Earnings per
 Share:
  Net Income...............  $        190,849 $        176,734 $        175,465
  Dividend requirements on
   Preferred Shares........               --               119            3,063
                             ---------------- ---------------- ----------------
  Balance Available for
   Common Shareholders.....  $        190,849 $        176,615 $        172,402
                             ================ ================ ================
Basic Earnings per Common
 Share.....................  $           1.54 $           1.44 $           1.36
                             ================ ================ ================
DILUTED
Weighted Average Number of
 Shares:
  Average Common Shares
   Outstanding.............       123,849,126      122,381,500      126,562,354
  Dilutive effective for
   Nonqualified Stock
   Options.................           374,344          323,367          238,286
                             ---------------- ---------------- ----------------
  Weighted Average Shares..       124,223,470      122,704,867      126,800,640
                             ================ ================ ================
Net Income to be Used to
 Compute Diluted Earnings
 per Share:
  Net Income...............  $        190,849 $        176,734 $        175,465
  Dividend requirements on
   Preferred Shares........               --               119            3,063
                             ---------------- ---------------- ----------------
  Balance Available for
   common Shareholders.....  $        190,849 $        176,615 $        172,402
                             ================ ================ ================
Diluted Earnings per Common
 Share.....................  $           1.53 $           1.43 $           1.35
                             ================ ================ ================
</TABLE>
 
5. STOCK SPLIT
 
  On December 16, 1997, the Board of Directors authorized a two-for-one split
of Industries' common stock. Shareholders received one additional common share
for each common share held. The stock split was paid February 20, 1998, to
shareholders of record at the close of business on January 30, 1998. All
references to number of shares reported for the period including per share
amounts and stock option data of Industries' common stock have been restated
to reflect the two-for-one stock split. The common share cash dividend paid
February 20, 1998 was paid on pre-split common shares.
 
6. PURCHASE OF IWC RESOURCES CORPORATION
 
  On March 25, 1997, Industries acquired all the outstanding common stock of
IWCR for $290.5 million. Industries financed this transaction with debt of
approximately $83.0 million and issuance of approximately 10.6 million
Industries' common shares. Industries accounted for the acquisition as a
purchase. The purchase price was allocated to the assets and liabilities
acquired based on their fair values.
 
7. PURCHASE OF BAY STATE GAS COMPANY
 
  On December 18, 1997, Industries and Bay State Gas Company (Bay State)
signed a definitive merger agreement under which Industries will acquire all
of the common stock of Bay State in a stock-for-stock transaction valued at
$40 per Bay State share. The transaction is valued at approximately $540
million. Bay State shareholders will have the option of taking up to 50
percent of the total purchase price in cash. Consummation of the merger is
subject to certain closing conditions, including the approval by the
shareholders of Bay State as well as the Securities and Exchange Commission,
FERC and state regulatory agencies in Massachusetts, New Hampshire and Maine.
The transaction is expected to be completed in late 1998.
 
                                      67
<PAGE>
 
  Bay State, one of the largest natural gas utilities in New England, provides
natural gas distribution service to more than 300,000 customers in
Massachusetts, New Hampshire and Maine. The combined gas utilities will be one
of the 10 largest natural gas distribution systems in the nation, servicing
more than 1 million gas customers. In addition, Industries and Bay State
anticipate entering into a joint marketing agreement early in 1998 that will
expand the operations of Bay State's non-regulated energy service companies.
 
                                      68
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
 
                     TWELVE MONTHS ENDED DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
         COL. A          COL. B          COL. C             COL. D     COL. E
         ------          ------- ----------------------- ------------ --------
                                        ADDITIONS
                                 -----------------------  DEDUCTIONS
                                       CHARGED           FOR PURPOSES
                         BALANCE         TO     CHARGED   FOR WHICH   BALANCE
                         JAN. 1, (A)  COSTS AND TO OTHER   RESERVES   DEC. 31,
      DESCRIPTION         1997   IWCR EXPENSES  ACCOUNTS WERE CREATED   1997
      -----------        ------- ---- --------- -------- ------------ --------
                                        (DOLLARS IN THOUSANDS)
<S>                      <C>     <C>  <C>       <C>      <C>          <C>
Reserves Deducted in
 Consolidated Balance
 Sheet from Assets to
 Which They Apply:
  Reserve for accounts
   receivable........... $ 5,569 $ 25  $6,573     --        $6,280    $ 5,887
  Reserve for
   investments, at
   equity............... $ 1,953 $--   $  --      --        $  191    $ 1,762
  Reserve for
   investments, at cost. $   --  $--   $  --      --        $  --     $   --
Reserves Classified
 Under Reserve Section
 of Consolidated Balance
 Sheet:
  Injuries and damages
   reserve.............. $ 4,376 $757  $6,603     --        $5,237    $ 6,499
  Environmental
   reserves............. $16,789 $--   $9,489     --        $6,912    $19,366
  Miscellaneous
   operating reserves... $ 4,471 $--   $   30     --        $  573    $ 3,928
</TABLE>
- --------
(a) Industries acquired IWCR in March 1997.
 
                                       69
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
 
                     TWELVE MONTHS ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
           COL. A             COL. B        COL. C          COL. D     COL. E
           ------             ------- ------------------ ------------ --------
                                          ADDITIONS
                                      ------------------
                                                          DEDUCTIONS
                                       CHARGED           FOR PURPOSES
                              BALANCE    TO     CHARGED   FOR WHICH   BALANCE
                              JAN. 1, COSTS AND TO OTHER   RESERVES   DEC. 31,
         DESCRIPTION           1996   EXPENSES  ACCOUNTS WERE CREATED   1996
         -----------          ------- --------- -------- ------------ --------
                                           (DOLLARS IN THOUSANDS)
<S>                           <C>     <C>       <C>      <C>          <C>
Reserves Deducted in
 Consolidated Balance Sheet
 from Assets to Which They
 Apply:
  Reserve for accounts
   receivable................ $7,264   $ 6,912   $  --      $8,607    $ 5,569
  Reserve for investments, at
   equity.................... $  850   $ 1,103   $  --      $  --     $ 1,953
Reserves Classified Under
 Reserve Section of
 Consolidated Balance Sheet:
  Injuries and damages
   reserve................... $1,837   $ 4,875   $  --      $2,336    $ 4,376
  Environmental reserves..... $5,006   $15,862   $  --      $4,079    $16,789
  Miscellaneous operating
   reserves.................. $4,091   $   380   $  --      $  --     $ 4,471
</TABLE>
 
                                       70
<PAGE>
 
                            NIPSCO INDUSTRIES, INC.
 
                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
 
                     TWELVE MONTHS ENDED DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
           COL. A             COL. B        COL. C          COL. D     COL. E
           ------             ------- ------------------ ------------ --------
                                          ADDITIONS
                                      ------------------  DEDUCTIONS
                                       CHARGED           FOR PURPOSES
                              BALANCE    TO     CHARGED   FOR WHICH   BALANCE
                              JAN. 1, COSTS AND TO OTHER   RESERVES   DEC. 31,
         DESCRIPTION           1995   EXPENSES  ACCOUNTS WERE CREATED   1995
         -----------          ------- --------- -------- ------------ --------
                                           (DOLLARS IN THOUSANDS)
<S>                           <C>     <C>       <C>      <C>          <C>
Reserves Deducted in
 Consolidated Balance Sheet
 from Assets to Which They
 Apply:
  Reserve for accounts
   receivable................ $4,899   $6,759     $--       $4,394     $7,264
  Reserve for investments, at
   equity.................... $2,850   $  --      $--       $2,000     $  850
Reserves Classified Under
 Reserve Section of
 Consolidated Balance Sheet:
  Injuries and damages
   reserve................... $2,538   $2,800     $--       $3,501     $1,837
  Environmental reserves..... $3,610   $3,188     $--       $1,792     $5,006
  Miscellaneous operating
   reserves.................. $4,061   $   30     $--       $  --      $4,091
</TABLE>
 
                                       71
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                         DESCRIPTION OF ITEM
  -------                        -------------------
 <C>       <S>                                                              <C>
  (2)      Agreement and Plan of Merger dated as of December 19, 1996, by
           and among NIPSCO Industries, Inc., Speedway Acquisition Corp.
           and IWC Resources Corporation (incorporated by reference to
           Annex A of the Proxy Statement-Prospectus contained in NIPSCO
           Industries, Inc. Registration Statement on Form S-4
           (Registration Statement No. 333-22065)).
  (2.1)    Amended and Restated Agreement and Plan of Merger, as of
           December 18, 1997, amended and restated as of March 4, 1998,
           between NIPSCO Industries, Inc. and Bay State Gas Company.
  (3.1)    Articles of Incorporation of September 22, 1987, as amended
           through April 9, 1997 (incorporated by reference to Exhibit
           3(b) to the NIPSCO Industries, Inc. Quarterly Report on Form
           10-Q for the quarter ended March 31, 1997).
  (3.2)    By-laws effective April 9, 1997 (incorporated by reference to
           Exhibit 3(a) to the NIPSCO Industries, Inc. Quarterly Report
           on Form 10-Q for the quarter ended March 31, 1997).
  (4.1)    Indenture dated August 1, 1939 between Northern Indiana Public
           Service Company (Northern Indiana) and Trustees (incorporated
           by reference to Exhibit 7 to Northern Indiana Registration
           Statement (Registration No. 2-5178)).
  (4.2)    Third Supplemental Indenture dated August 1, 1943
           (incorporated by reference to Exhibit 7-C to Northern Indiana
           Registration Statement (Registration No. 2-5178)).
  (4.3)    Nineteenth Supplemental Indenture dated October 1, 1968
           (incorporated by reference to Exhibit 1 to Northern Indiana
           Current Report on Form 8-K dated November 8, 1968).
  (4.4)    Twenty-third Supplemental Indenture dated March 31, 1972
           (incorporated by reference to Exhibit 2 to Northern Indiana
           Current Report on Form 8-K dated May 5, 1972).
  (4.5)    Thirty-third Supplemental Indenture dated June 1, 1980
           (incorporated by reference to Exhibit 1 to Northern Indiana
           Quarterly Report on Form 10-Q for the quarter ended June 30,
           1980).
  (4.6)    Forty-first Supplemental Indenture dated July 1, 1991
           (incorporated by reference to Exhibit 1 to Northern Indiana
           Current Report on Form 8-K dated March 25, 1992).
  (4.7)    Indenture dated as of March 1, 1988 between Northern Indiana
           and Manufacturers Hanover Trust Company, as Trustee
           (incorporated by reference to Exhibit 4 to Northern Indiana
           Registration Statement (Registration No. 33-44193)).
  (4.8)    Indenture dated as of December 1, 1991 between Northern
           Indiana and Manufacturers Hanover Trust Company, as Trustee
           (incorporated by reference to Exhibit 4.1 to Northern Indiana
           Registration Statement (Registration No. 33-63870)).
  (4.9)    Memorandum of Agreement with City of Michigan City, Indiana
           (incorporated by reference to Exhibit 7 to Northern Indiana
           Registration Statement (Registration No. 2-48531)).
  (4.10)   Financing Agreement No. 1 dated November 1, 1988 with Jasper
           County, Indiana regarding $37,000,000 Series 1988A Pollution
           Control Refunding Revenue Bonds. Identical financing
           agreements between Registrant and Jasper County, Indiana
           provide for the issuance of $47,000,000 Series 1988B,
           $46,000,000 Series 1988C and $24,000,000 Series 1988D
           Pollution Control Refunding Revenue Bonds (incorporated by
           reference to Exhibit 8 to Northern Indiana Current Report on
           Form 8-K dated March 16, 1989).
  (4.11)   Financing Agreement dated July 1, 1991, with Jasper County,
           Indiana regarding $55,000,000 Series 1991 Collateralized
           Pollution Control Refunding Revenue Bonds (incorporated by
           reference to Exhibit 3 to Northern Indiana Current Report on
           Form 8-K dated March 25, 1992).
</TABLE>
 
 
                                       72
<PAGE>
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                         DESCRIPTION OF ITEM
  -------                        -------------------
 <C>       <S>                                                              <C>
  (4.12)   Financing Agreement dated August 1, 1994, with Jasper County,
           Indiana regarding $10,000,000 Series 1994A, $18,000,000 Series
           1994B and $41,000,000 Series 1994C Pollution Control Refunding
           Revenue Bonds (incorporated by reference to Exhibit 4.16 to
           Northern Indiana Annual Report on Form 10-K for year ended
           December 31, 1994).
  (4.13)   Indenture between Registrant, NIPSCO Capital Markets, Inc. and
           Chemical Bank as Trustees dated February 1, 1996 (incorporated
           by reference to Exhibit 1 to NIPSCO Industries, Inc.
           Registration Statement (Registration No. 33-65285)).
  (4.14)   Rights Agreement between Registrant and Harris Trust and
           Savings Bank, dated February 27, 1990 (incorporated by
           reference to Exhibit 4.1 to the NIPSCO Industries, Inc.
           Current Report on Form 8-K dated March 7, 1990).
  (4.15)   Indenture Agreement between Registrant, NIPSCO Capital
           Markets, Inc. and Chase Manhattan Bank as trustee dated
           February 14, 1997 (incorporated by reference to Exhibit 4.1 to
           NIPSCO Industries, Inc. Registration Statement (Registration
           No. 333-22347)).
  (4.16)   Eleventh Supplemental Indenture dated as of December 1, 1971
           (incorporated by reference to Exhibit 4-B6 to IWC's Annual
           Report on Form 10-K for the year ended December 31, 1980).
  (4.17)   Seventeenth Supplemental Indenture dated as of March 1, 1989,
           between Fidelity Bank, National Association and IWC
           (incorporated by reference to Exhibit 4-A9 to IWCR's Annual
           Report on Form 10-K for the year ended December 31, 1988).
  (4.18)   Eighteenth Supplemental Indenture dated as of March 1, 1989,
           between Fidelity Bank, National Association and IWC
           (incorporated by reference to Exhibit 4-A10 to IWCR's Annual
           Report on Form 10-K for the year ended December 31, 1988).
  (4.19)   Ninteenth Supplemental Indenture dated as of June 1, 1989,
           between Fidelity Bank, National Association and IWC
           (incorporated by reference to Exhibit 4-A9 to IWCR's
           Registration Statement (Registration No. 33-43939)).
  (4.20)   Fourteenth Supplemental Indenture dated as of January 15,
           1978, between the Fidelity Bank, and IWC, including as
           Appendix A the "Restatement of Principal Indenture of
           Indianapolis Water Company," which, except as otherwise
           specified, restates the granting clauses and all other
           sections contained in the First Mortgage dated July 1, 1936,
           between Fidelity-Philadelphia Trust Company and Registrant as
           amended by the Fourth, Fifth, Sixth, Eighth, Twelfth and
           Fourteenth Supplemental Indentures (incorporated by reference
           to Exhibit 4-B1 to IWC's Annual Report on Form 10-K for the
           year ended December 31, 1980).
  (4.21)   Twentieth Supplemental Indenture dated as of December 1, 1992,
           between Fidelity Bank, National Association and IWC
           (incorporated by reference to Exhibit 4-A9 to Registrant's
           Annual Report on Form 10-K for the year ended December 31,
           1992).
 
 
  (4.22)   Twenty-First Supplemental Indenture dated as of December 1,
           1992, between Fidelity Bank, National Association and IWC
           (incorporated by reference to Exhibit 4-A10 to Registrant's
           Annual Report on Form 10-K for the year ended December 31,
           1992).
  (4.23)   Rights Agreement, dated as of February 9, 1988, between IWCR
           and Bank One, Indianapolis, NA, as Rights Agent, which
           includes the Form of Certificate of Designations of Series A
           Junior Participating Preferred Stock as Exhibit A, the Form of
           Right Certificate as Exhibit B and the Summary of Rights to
           Purchase Preferred Shares as Exhibit C (incorporated by
           reference to Exhibit 4 to the IWCR's Current Report on Form 8-
           K dated February 9, 1988).
</TABLE>
 
                                       73
<PAGE>
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                         DESCRIPTION OF ITEM
  -------                        -------------------
 <C>       <S>                                                              <C>
  (4.24)   Indenture of Trust dated as of March 1, 1989, between IWC,
           City of Indianapolis, Indiana, and Merchants National Bank &
           Trust Company of Indianapolis, as Trustee (incorporated by
           reference to Exhibit 10-F to IWCR's Annual Report on Form 10-K
           for the year ended December 31, 1988).
  (4.25)   Indenture of Trust dated as of March 1, 1989, between IWC,
           Town of Fishers, Indiana, and Merchants National Bank & Trust
           Company of Indianapolis, as Trustee (incorporated by reference
           to Exhibit 10-G to IWCR's Annual Report on Form 10-K for the
           year ended December 31, 1988).
  (4.26)   Indenture of Trust dated as of December 1, 1992, between City
           of Indianapolis, Indiana, and IWC to National City Bank,
           Indiana, as Trustee (incorporated by reference to Exhibit 10-J
           to IWCR's Annual Report on Form 10-K for the year ended
           December 31, 1992).
  (4.27)   Indenture of Trust, City of Indianapolis, Indiana, and IWC to
           National City Bank, Indiana, as Trustee, dated as of April 1,
           1993 (incorporated by reference to Exhibit 4.14 to IWCR's
           Annual Report on Form 10-K for the year ended December 31,
           1993).
  (4.28)   Twenty-Second Supplemental Indenture dated as of April 1,
           1993, between IWC and Fidelity Bank, National Association
           (incorporated by reference to Exhibit 4.15 to IWCR's Annual
           Report on Form 10-K for the year ended December 31, 1993).
  (10.1)   Supplemental Life Insurance Plan effective January 1, 1991
           (incorporated by reference to Exhibit 2 to the NIPSCO
           Industries, Inc. Current Report on Form 8-K dated March 25,
           1992).*
  (10.2)   Executive Deferred Compensation Plan effective December 1,
           1990 (incorporated by reference to Exhibit 3 to the NIPSCO
           Industries, Inc. Current Report on Form 8-K dated March 25,
           1992).*
  (10.3)   Form of Change in Control and Termination Agreements and
           Schedule of Parties to the Agreements.*
  (10.4)   Nonemployee Director Stock Incentive Plan effective February
           1, 1992 (incorporated by reference to Exhibit 5 to the NIPSCO
           Industries, Inc. Current Report on Form 8-K dated March 25,
           1992).*
  (10.5)   First Amendment to Nonemployee Director Stock Incentive Plan,
           effective December 16, 1997.
  (10.6)   NIPSCO Industries, Inc. 1988 Long-Term Incentive Plan
           (incorporated by reference to Exhibit 6 to the NIPSCO
           Industries, Inc. Current Report on Form 8-K dated March 5,
           1992).*
  (10.7)   First Amendment to NIPSCO Industries, Inc. 1988 Long-Term
           Incentive Plan effective August 24, 1993.*
  (10.8)   Second Amendment to NIPSCO Industries, Inc. 1988 Long-Term
           Incentive Plan effective December 16, 1997.*
  (10.9)   Amended and Restated Pension Plan Provisions effective January
           1, 1989 (incorporated by reference to Exhibit 17 to Northern
           Indiana Current Report on Form 8-K dated March 25, 1992).*
  (10.10)  NIPSCO Industries, Inc. 1994 Long-Term Incentive Plan*
           (incorporated by reference to Exhibit 10.8 to NIPSCO
           Industries Annual Report on Form 10-K for the year ended
           December 31, 1995).
  (10.11)  Amendment to NIPSCO Industries, Inc. 1994 Long-Term Incentive
           Plan effective December 16, 1997.*
  (10.12)  NIPSCO Industries, Inc. Directors' Charitable Gift Program*
           (incorporated by reference to Exhibit 10.8 to NIPSCO
           Industries Annual Report on Form 10-K for the year ended
           December 31, 1996).
</TABLE>
 
                                       74
<PAGE>
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                         DESCRIPTION OF ITEM
  -------                        -------------------
 <C>       <S>                                                              <C>
  (10.13)  Employment Agreement between IWCR and James T. Morris, dated
           March 25, 1997.*
  (10.14)  Executive Supplemental Pension Agreement between IWCR and
           James T. Morris, dated January 13, 1998.*
  (10.15)  Agreement dated October 18, 1971, between IWC and Department
           of Public Works of the City of Indianapolis, Indiana,
           regarding the purchase of water at Eagle Creek Reservoir
           (incorporated by reference to Exhibit 5 to IWC's Registration
           Statement (Registration Statement No. 2-55201)).
  (10.16)  Loan Agreement dated as of March 1, 1989, between IWC and the
           City of Indianapolis, Indiana (incorporated by reference to
           Exhibit 10-D to IWCR's Annual Report on Form 10-K for the year
           ended December 31, 1988).
  (10.17)  Loan Agreement dated as of March 1, 1989, between IWC and Town
           of Fishers, Indiana (incorporated by reference to Exhibit 10-E
           to IWCR's Annual Report on Form 10-K for the year ended
           December 31, 1988).
  (10.18)  Guaranty Agreement dated as of March 1, 1989, between IWCR and
           Merchants National Bank and Trust Company of Indianapolis
           regarding City of Indianapolis, Indiana Industrial Development
           Bonds (incorporated by reference to Exhibit 10-H to IWCR's
           Annual Report on Form 10-K for the year ended December 31,
           1988).
  (10.19)  Guaranty Agreement dated as of March 1, 1989, between IWCR and
           Merchants National Bank & Trust Company of Indianapolis
           regarding Town of Fishers, Indiana Industrial Development
           Bonds (incorporated by reference to Exhibit 10-I to IWCR's
           Annual Report on Form 10-K for the year ended December 31,
           1988).
  (10.20)  Loan Agreement dated as of December 1, 1992, between IWC and
           City of Indianapolis, Indiana (incorporated by reference to
           Exhibit 10-K to IWCR's Annual Report on Form 10-K for the year
           ended December 31, 1992).
  (10.21)  Guaranty Agreement dated as of December 1, 1992, between IWCR
           and National City Bank, Indiana, as Trustee (incorporated by
           reference to Exhibit 10-L to IWCR's Annual Report on Form 10-K
           for the year ended December 31, 1992).
  (10.22)  Note Agreement dated as of March 1, 1994, between IWCR and
           American United Life Insurance Company (incorporated by
           reference to Exhibit 10.10 to IWCR's Annual Report on Form 10-
           K for the year ended December 31, 1993).
  (10.23)  Loan Agreement dated as of April 1, 1993, between IWC and the
           City of Indianapolis (incorporated by reference to Exhibit
           10.11 to IWCR's Annual Report on Form 10-K for the year ended
           December 31, 1993).
  (10.24)  Guaranty Agreement between IWCR and National City Bank,
           Indiana, as Trustee, dated as of April 1, 1993 (incorporated
           by reference to Exhibit 10.12 to IWCR's Annual Report on Form
           10-K for the year ended December 31, 1993).
  (13)     1997 Annual Report to Shareholders for pages 22-28.
  (21)     List of Subsidiaries.
  (23)     Consent of Arthur Andersen LLP.
</TABLE>
- --------
*Management contract or compensatory plan arrangement of NIPSCO Industries Inc.
 
                                       75

<PAGE>
 
                                                                     EXHIBIT 2.1
 











 
                             AMENDED AND RESTATED
 
                         AGREEMENT AND PLAN OF MERGER
 
                                by and between

                            NIPSCO INDUSTRIES, INC.
 
                                      and
 
                             BAY STATE GAS COMPANY
 
                         dated as of December 18, 1997
 
                                      and
 
                    amended and restated as of March 4, 1998
 
 




                                      A-i
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                               Page
                                                                               ----
<S>                                                                            <C>
ARTICLE I
  THE MERGER.................................................................   A-1
   1.1  The Merger...........................................................   A-1
   1.2  The Alternative Merger...............................................   A-1
   1.3  Closing..............................................................   A-2
   1.4  Effective Time.......................................................   A-2
   1.5  Articles of Organization.............................................   A-2
   1.6  By-Laws..............................................................   A-2
   1.7  Directors............................................................   A-2
   1.8  Officers.............................................................   A-2

ARTICLE II
  CONVERSION OF SHARES.......................................................   A-3
   2.1  Conversion of Acquisition Shares.....................................   A-3
   2.2  Conversion of Company Shares.........................................   A-3
        2.2.1  Outstanding Shares of Company Common Stock....................   A-3
        2.2.2  Cash Election.................................................   A-4
        2.2.3  Cash Election Shares..........................................   A-4
        2.2.4  Form of Election..............................................   A-4
        2.2.5  Deemed Non-Election...........................................   A-4
        2.2.6  Election Deadline.............................................   A-4
        2.2.7  Treasury Shares...............................................   A-4
        2.2.8  Adjustment Per Tax Opinion....................................   A-4
        2.2.9  Adjustments to Prevent Dilution...............................   A-4
   2.3  Exchange of Certificates and Related Matters.........................   A-4
        2.3.1  Paying Agent..................................................   A-4
        2.3.2  Letter of Transmittal.........................................   A-5
        2.3.3  Exchange Procedures...........................................   A-5
        2.3.4  Distributions with Respect to Unexchanged Shares..............   A-5
        2.3.5  No Further Ownership Rights in Company Shares.................   A-6
        2.3.6  No Fractional Shares..........................................   A-6
        2.3.7  Termination of Paying Agent...................................   A-6
        2.3.8  No Liability..................................................   A-6
ARTICLE III
  REPRESENTATIONS AND WARRANTIES OF THE COMPANY..............................   A-6
   3.1  Organization, Standing and Corporate Power...........................   A-7
   3.2  Capital Structure....................................................   A-7
   3.3  Subsidiaries.........................................................   A-7
   3.4  Authority; Noncontravention..........................................   A-8
   3.5  SEC Documents and Financial Statements...............................   A-9
   3.6  Absence of Certain Changes or Events.................................   A-9
   3.7  Real and Personal Property...........................................  A-10
   3.8  Employee Matters; ERISA..............................................  A-10
   3.9  Taxes................................................................  A-13
        3.9.1  Filing of Timely Tax Returns..................................  A-13
        3.9.2  Payment of Taxes..............................................  A-13
        3.9.3  Tax Reserves..................................................  A-13
        3.9.4  Tax Liens.....................................................  A-13
</TABLE>

                                     A-ii
<PAGE>
 
<TABLE>                                                                    
<CAPTION>                                                                      Page
                                                                               ----
<S>                                                                             <C>   
     3.9.5   Withholding Taxes...............................................  A-13                     
     3.9.6   Extensions of Time for Filing Tax Returns.......................  A-13                          
     3.9.7   Waivers of Statute of Limitations...............................  A-13
     3.9.8   Expiration of Statute of Limitations............................  A-14
     3.9.9   Audit Administrative and Court Proceedings......................  A-14
     3.9.10  Powers of Attorney..............................................  A-14
     3.9.11  Tax Rulings.....................................................  A-14
     3.9.12  Availability of Tax Returns.....................................  A-14
     3.9.13  Tax-Sharing Agreements..........................................  A-14
     3.9.14  Code Section 341(f).............................................  A-14
     3.9.15  Code Section 168................................................  A-14
     3.9.16  Code Section 481 Adjustments....................................  A-14
     3.9.17  Code Section 6661 and 6662......................................  A-14
     3.9.18  Code Section 280G...............................................  A-14
     3.9.19  NOLS............................................................  A-14
     3.9.20  Credit Carryovers...............................................  A-15
     3.9.21  Code Section 338 Elections......................................  A-15
     3.9.22  Acquisition Indebtedness........................................  A-15
     3.9.23  Intercompany Transactions.......................................  A-15
     3.9.24  Liability for Others............................................  A-15
   3.10  Compliance with Applicable Laws.....................................  A-15
   3.11  Environmental Protection............................................  A-15
   3.12  Litigation..........................................................  A-17
   3.13  Labor Relations.....................................................  A-17
   3.14  Intellectual Property...............................................  A-18
   3.15  No Default..........................................................  A-19
   3.16  Regulation as a Utility.............................................  A-19
   3.17  Insurance...........................................................  A-19
   3.18  Voting Requirements.................................................  A-19
   3.19  Brokers.............................................................  A-19
   3.20  Opinion of Financial Advisor........................................  A-19
   3.21  Change in Business Relationships....................................  A-19
   3.22  Material Contracts..................................................  A-20
   3.23  Commodity Derivatives and Credit Exposure Matters...................  A-20
   3.24  No Omissions........................................................  A-20

ARTICLE IV
  REPRESENTATIONS AND WARRANTIES OF NIPSCO...................................  A-20
   4.1  Organization, Standing and Corporate Power...........................  A-21
   4.2  Nipsco Capital Structure.............................................  A-21
   4.3  Subsidiaries.........................................................  A-21
   4.4  Authority; Noncontravention..........................................  A-21
   4.5  Nipsco SEC Documents and Financial Statements........................  A-22
   4.6  Absence of Certain Changes or Events.................................  A-22
   4.7  Employee Matters; ERISA..............................................  A-22
   4.8  Taxes................................................................  A-22
        4.8.1  Filing of Timely Tax Returns..................................  A-22
        4.8.2  Payment of Taxes..............................................  A-22
   4.9  Environmental Matters................................................  A-22
        4.9.1  Environmental Matters.........................................  A-22
   4.10 Brokers..............................................................  A-23
</TABLE>

                                     A-iii
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
   4.11 No Omissions......................................................  A-23
   4.12 Regulation as a Utility...........................................  A-23
   4.13 Compliance........................................................  A-23

ARTICLE V
  ADDITIONAL AGREEMENTS...................................................  A-23
   5.1  Preparation of Registration Statement and Proxy Statement.........  A-23
     5.1.1  Registration Statement; Proxy Statement.......................  A-24
     5.1.2  Company Information...........................................  A-24
     5.1.3  Nipsco Information............................................  A-24
   5.2  Meeting of the Company's Shareholders.............................  A-24
   5.3  Affiliates and Certain Shareholders...............................  A-26
   5.4  Best Efforts......................................................  A-26
   5.5  Letter of the Company's Accountants...............................  A-26
   5.6  Letter of Nipsco's Accountants....................................  A-26
   5.7  Access to Information; Confidentiality............................  A-26
   5.8  Public Announcements..............................................  A-27
   5.9  Acquisition Proposals.............................................  A-27
   5.10 Fiduciary Duties..................................................  A-27
   5.11 Filings; Other Action.............................................  A-28
     5.11.1 HSR Act.......................................................  A-28
     5.11.2 Other Regulatory Approvals....................................  A-28
     5.11.3 Other Approvals...............................................  A-28
   5.12 Stock Exchange Listings...........................................  A-28
   5.13 Indemnification...................................................  A-28
   5.14 Representation on Nipsco Board....................................  A-29
   5.15 Cooperation, Notification.........................................  A-29
   5.16 Termination of Company Dividend Reinvestment Plan.................  A-29
   5.17 Federal Income Tax Treatment......................................  A-29
   5.18 Termination of Shareholder Rights Plan............................  A-29
   5.19 Actions Relating to Acquisition...................................  A-29
   5.20 Recognition of Existing Contracts.................................  A-29
   5.21 Redemption of Company Preferred Stock.............................  A-29
   5.22 Company Stock Options.............................................  A-29

ARTICLE VI
  COVENANTS RELATING TO CONDUCT OF BUSINESS PRIOR TO MERGER...............  A-30
   6.1  Conduct of Business of Company Pending the Merger.................  A-30
     6.1.1  Ordinary Course of Business...................................  A-30
     6.1.2  Dividends; Changes in Stock...................................  A-30
     6.1.3  Issuance of Securities........................................  A-31
     6.1.4  Capital Expenditures..........................................  A-31
     6.1.5  No Acquisitions...............................................  A-31
     6.1.6  No Dispositions...............................................  A-31
     6.1.7  No Dissolution, Etc...........................................  A-31
     6.1.8  Limitation on Investment in Joint Ventures....................  A-31
     6.1.9  Certain Employee Matters......................................  A-31
     6.1.10 Indebtedness; Leases..........................................  A-32
     6.1.11 Governing Documents...........................................  A-32
     6.1.12 Accounting....................................................  A-32
     6.1.13 Rate Matters..................................................  A-32
     6.1.14 Gas Transmission and Storage..................................  A-32
</TABLE>
 
                                     A-iv
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
     6.1.15 Contracts.....................................................  A-33
     6.1.16 Insurance.....................................................  A-33
     6.1.17 Permits.......................................................  A-33
     6.1.18 Discharge of Liabilities......................................  A-33
     6.1.19 1935 Act......................................................  A-33
     6.1.20 Tax Matters...................................................  A-33
     6.1.21 Tax Status....................................................  A-33
   6.2  Management of the Company and its Subsidiaries....................  A-33
   6.3  Conduct of Business of Nipsco Pending the Merger..................  A-33
   6.4  Other Actions.....................................................  A-33

ARTICLE VII
  CONDITIONS PRECEDENT....................................................  A-34
   7.1  Conditions to Each Party's Obligation to Effect the Merger........  A-34
     7.1.1  Company Shareholder Approval..................................  A-34
     7.1.2  Governmental and Regulatory Consents..........................  A-34
     7.1.3  HSR Act.......................................................  A-34
     7.1.4  No Injunctions or Restraints..................................  A-34
     7.1.5  NYSE Listing..................................................  A-34
     7.1.6  Registration Statement........................................  A-34
     7.1.7  Share Purchase Rights.........................................  A-34
   7.2  Conditions to Obligations of Nipsco...............................  A-34
     7.2.1  Representations and Warranties................................  A-34
     7.2.2  Performance of Obligations of the Company.....................  A-34
     7.2.3  Tax Opinion...................................................  A-35
     7.2.4  Consents and Approvals........................................  A-35
   7.3  Conditions to Obligation of the Company...........................  A-35
     7.3.1  Representations and Warranties................................  A-35
     7.3.2  Performance of Obligations of Nipsco..........................  A-35
     7.3.3  Tax Opinion...................................................  A-35
     7.3.4  Consents and Approvals........................................  A-35

ARTICLE VIII
  TERMINATION, AMENDMENT AND WAIVER.......................................  A-35
   8.1  Termination.......................................................  A-35
   8.2  Effect of Termination.............................................  A-36
   8.3  Amendment.........................................................  A-37
   8.4  Extension; Waiver.................................................  A-37
   8.5  Procedure for Termination, Amendment, Extension or Waiver.........  A-37

ARTICLE IX
  SURVIVAL OF PROVISIONS..................................................  A-37
   9.1  Survival..........................................................  A-37

ARTICLE X
  NOTICES.................................................................  A-37
  10.1  Notices...........................................................  A-37
</TABLE>
 
 
                                      A-v
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
ARTICLE XI
  MISCELLANEOUS............................................................ A-38
  11.1  Entire Agreement................................................... A-38
  11.2  Expenses........................................................... A-39
  11.3  Counterparts....................................................... A-39
  11.4  No Third Party Beneficiary......................................... A-39
  11.5  Governing Law...................................................... A-39
  11.6  Assignment; Binding Effect......................................... A-39
  11.7  Headings, Gender, etc.............................................. A-39
  11.8  Invalid Provisions................................................. A-39
</TABLE>
 
                                     A-vi
<PAGE>
 
               AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER
 
  This Amended and Restated Agreement and Plan of Merger (the "Agreement") is
made and entered into as of the 18th day of December, 1997, and amended and
restated as of the 4th day of March, 1998, by and among NIPSCO Industries,
Inc., an Indiana corporation ("Nipsco"), and Bay State Gas Company, a
Massachusetts corporation (the "Company").
 
                                   PREAMBLE
 
  Whereas, the respective boards of directors of Nipsco and the Company have
determined that the Merger (as defined in Section 1.1) is in the best
interests of their respective shareholders and have approved the Merger, upon
the terms and subject to the conditions set forth herein;
 
  Whereas, Nipsco and the Company intend that, for federal income tax
purposes, the Merger will constitute a reorganization within the meaning of
Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code");
 
  Whereas, Nipsco and the Company desire to make certain representations,
warranties, covenants and agreements in connection with the Merger; and
 
  Now, Therefore, in consideration of the mutual covenants and agreements set
forth in this Agreement, and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:
 
                                   ARTICLE I
 
                                  THE MERGER
 
  1.1 The Merger. Subject to the terms and conditions of this Agreement, at
the Effective Time (as defined in Section 1.4), the Company shall be merged
with and into a corporation to be organized as a wholly-owned subsidiary of
Nipsco under the laws of the Commonwealth of Massachusetts ("Acquisition")
(the "Merger"), in accordance with the Massachusetts Gas and Electricity Law
(the "MGEL") and Massachusetts Business Corporation Law (the "MBCL"), and the
separate corporate existence of the Company shall cease and Acquisition shall
continue as the surviving corporation (the "Surviving Corporation") under the
laws of the Commonwealth of Massachusetts with all the rights, privileges,
immunities and powers, and subject to all the duties and liabilities, of a
corporation organized under the MGEL and MBCL. The Merger shall have the
effects set forth in the MGEL and MBCL.
 
  1.2 The Alternative Merger.
 
    1.2.1 If at any time prior to December 31, 1998, (a) it becomes possible
  under the laws relating to incorporation and to public utilities applicable
  to the Company and its wholly owned subsidiary, Northern Utilities, Inc.
  ("Northern"), to merge the Company into Nipsco's wholly owned subsidiary,
  Northern Indiana Public Service Company, followed immediately by the merger
  of Northern into Northern Indiana Public Service Company (the "Alternative
  Merger") and (b) the Securities and Exchange Commission (the "SEC") has not
  approved, nor has the staff of the SEC recommended that the SEC approve,
  the application for the Merger under the Public Utility Holding Company Act
  of 1935, as amended (the "1935 Act"), then, subject to Section 1.2.3 and
  the other terms and conditions of the Agreement, the form of the
  transaction contemplated by this Agreement will be revised to provide for
  the Alternative Merger, including establishing the consideration to be used
  in the merger of Northern into Northern Indiana Public Service Company to
  meet the requirements of a tax-free reorganization pursuant to Section 368
  of the Code, and the parties shall amend the terms of this Agreement to
  make them consistent with the Alternative Merger;
 
                                      A-1

<PAGE>
 
  provided, however, that so long as the parties are using their best efforts
  to consummate the Alternative Merger, the parties may simultaneously
  continue to pursue the regulatory approvals necessary for the Merger if it
  is practicable to do so in a manner that will not unduly delay the
  consummation of the Alternative Merger.
 
    1.2.2 Notwithstanding Sections 1.1 and 1.2.1, if by December 31, 1998,
  none of the following conditions has been met: (a) the Alternative Merger
  has become legally possible; (b) the SEC has approved the application for
  the Merger under the 1935 Act; (c) the SEC staff has recommended that the
  SEC approve the application for the Merger under the 1935 Act, or (d) the
  1935 Act has been, or subject only to the passage of time up to the time
  specified in Section 8.1.2 (iii) will be, repealed or amended in relevant
  manner to permit the Merger, then either party may terminate this Agreement
  pursuant to Section 8.1.2(iii) of this Agreement.
 
    1.2.3 The parties hereto acknowledge that, in the absence of regulatory
  constraints under the 1935 Act, it would be preferable to effect the Merger
  and for the Alternative Merger not to be effected. Accordingly, if at the
  time all other conditions to the parties' respective obligations to
  consummate this Agreement have been satisfied or waived, the 1935 Act has
  been, or subject only to the passage of time up to the time specified in
  Section 8.1.2 (iii) will be, repealed or amended in relevant manner to
  permit the Merger, the parties shall effect the Merger.
 
  1.3 Closing. Unless this Agreement shall have been terminated and the
transactions herein contemplated shall have been abandoned pursuant to Section
8.1, and subject to the satisfaction or waiver of the conditions set forth in
Article VII, the closing of the Merger (the "Closing") shall take place at
9:00 a.m. on the second business day following the date on which the last of
the conditions set forth in Article VII shall have been fulfilled or waived in
accordance with this Agreement (the "Closing Date"), at the offices of Schiff
Hardin & Waite ("SH&W"), 7200 Sears Tower, Chicago, Illinois 60606, unless the
parties hereto agree to another date, time or place.
 
  1.4 Effective Time. The parties hereto shall file with the Secretary of the
Commonwealth of Massachusetts (the "Massachusetts Secretary") on the date of
the Closing (or on such other date as Nipsco and the Company may agree)
articles of merger or other appropriate documents, mutually satisfactory in
form and substance to Nipsco and the Company and executed in accordance with
the relevant provisions of the MGEL and the MBCL, and shall make all other
filings or recordings required under the MGEL and the MBCL in connection with
the Merger. The Merger shall become effective upon the filing of the articles
of merger with the Massachusetts Secretary, or at such later time as is
specified in the articles of merger (the "Effective Time").
 
  1.5 Articles of Organization. The articles of organization of Acquisition as
in effect immediately prior to the Effective Time shall be the articles of
organization of the Surviving Corporation (the "Charter"), until duly amended
as provided therein or by applicable law.
 
  1.6 By-Laws. The by-laws of Acquisition, as in effect immediately prior to
the Effective Time, shall be the by-laws of the Surviving Corporation (the
"By-Laws") until thereafter amended as provided by law, the By-Laws or the
Charter.
 
  1.7 Directors. The board of directors of the Surviving Corporation from and
after the Effective Time shall be comprised of those individuals listed on
Schedule 1.7 hereto, such directors to hold office from the Effective Time
until their respective successors are duly elected or appointed and qualify in
the manner provided in the Charter or By-Laws or as otherwise provided by law.
 
  1.8 Officers. The officers of the Company at the Effective Time shall be the
officers of the Surviving Corporation and shall hold office from the Effective
Time until their respective successors are duly elected or appointed and
qualify in the manner provided in the Charter or By-Laws or as otherwise
provided by law.
 
                                      A-2

<PAGE>
 
                                  ARTICLE II
 
                             CONVERSION OF SHARES
 
  2.1 Conversion of Acquisition Shares. Each share of common stock of
Acquisition issued and outstanding immediately prior to the Effective Time
shall remain outstanding and unchanged by reason of the Merger as one share of
common stock of the Surviving Corporation.
 
  2.2 Conversion of Company Shares.
 
    2.2.1 Outstanding Shares of Company Common Stock. Subject to the
  provisions of this Section 2.2, each share of common stock, par value $3.33
  1/3 per share of the Company (the "Company Shares") issued and outstanding
  immediately prior to the Effective Time (other than shares held as treasury
  shares by the Company) shall by virtue of the Merger and without any action
  on the part of the holder thereof, be converted into the right to receive
  (i) $40.00 in cash (the "Cash Price"), or (ii) such number or fraction
  thereof validly issued, fully paid and nonassessable shares of common
  stock, without par value, of Nipsco ("Nipsco Common Shares") determined by
  dividing the Cash Price by the Nipsco Share Price (as defined below) (the
  "Exchange Ratio") or (iii) the right to receive a combination of cash and
  Nipsco Common Shares determined in accordance with Section 2.2.2 or Section
  2.2.3. The "Nipsco Share Price" shall be equal to the average of the
  closing prices of the Nipsco Common Shares on the New York Stock Exchange
  ("NYSE") Composite Transactions Reporting System, as reported in The Wall
  Street Journal, for the 20 trading days immediately preceding the second
  trading day prior to the Effective Time.
 
    2.2.2 Cash Election. Subject to the immediately following sentence, each
  record holder of Company Shares immediately prior to the Effective Time
  shall be entitled to elect to receive cash for all or any part of such
  holder's Company Shares (a "Cash Election"). Notwithstanding the foregoing
  and subject to Section 2.2.9, the aggregate number of Company Shares that
  may be converted into the right to receive cash in the Merger (the "Cash
  Election Number") shall not exceed an amount determined by dividing (A) the
  dollar number equal to the difference between (i) one-half the product of
  (x) the Cash Price multiplied by (y) the aggregate number of Company Shares
  outstanding at 5:00 p.m. Eastern Time on the second day prior to the
  Effective Time less (ii) the dollar amount of any special dividend paid by
  the Company pursuant to the second sentence of Section 6.1.2 and other
  dollar amounts as reasonably determined by SH&W, counsel to Nipsco and
  Acquisition, and LeBoeuf, Lamb, Greene & MacRae, L.L.P. ("LLG&M"), counsel
  to the Company, by (B) the Cash Price. Cash Elections shall be made on a
  form designed for that purpose (a "Form of Election"). A holder of record
  of Company Shares who holds such Company Shares as nominee, trustee or in
  another representative capacity (a "Representative") may submit multiple
  Forms of Election, provided that such Representative certifies that each
  such Form of Election covers all the Company Shares held by such
  Representative for a particular beneficial owner. To the extent not covered
  by a properly given Cash Election, all Company Shares issued and
  outstanding immediately prior to the Effective Time shall, except as
  provided in Section 2.2.1, be converted solely into Nipsco Shares.
 
    2.2.3 Cash Election Shares. If the aggregate number of Company Shares
  covered by Cash Elections (the "Cash Election Shares") exceeds the Cash
  Election Number, each Cash Election Share shall be converted into (i) the
  right to receive an amount in cash, without interest, equal to the product
  of (a) the Cash Price and (b) a fraction (the "Cash Fraction"), the
  numerator of which shall be the Cash Election Number and the denominator of
  which shall be the total number of Cash Election Shares, and (ii) a number
  of Nipsco Common Shares equal to the product of (a) the Exchange Ratio and
  (b) a fraction equal to one minus the Cash Fraction.
 
    2.2.4 Form of Election. To be effective, a Form of Election must be
  properly completed, signed and submitted to Nipsco's transfer agent and
  registrar, as paying agent (the "Paying Agent"), and accompanied by the
  certificates representing the Company Shares ("Company Certificates") as to
  which the election is being made (or by an appropriate guarantee of
  delivery of such Company Certificate signed by a firm that is a member of
  any registered national securities exchange or a member of the National
  Association of
 
                                      A-3

<PAGE>
 
  Securities Dealers, Inc. or a bank, broker, dealer, credit union, savings
  association or other entity that is a member in good standing of the
  Securities Transfer Agent's Medallion Program, the New York Stock Exchange
  Medallion Signature Guarantee Program or the Stock Exchange Medallion
  Program). Nipsco shall have the discretion, which it may delegate in whole
  or in part to the Paying Agent, to determine whether Forms of Election have
  been properly completed, signed and submitted or revoked and to disregard
  immaterial defects in Forms of Election. The decision of Nipsco (or the
  Paying Agent) in such matters shall be conclusive and binding. Neither
  Nipsco nor the Paying Agent shall be under any obligation to notify any
  person of any defect in a Form of Election submitted to the Paying Agent.
  The Paying Agent shall also make all computations contemplated by this
  Section 2.2, and all such computations shall be conclusive and binding on
  the holders of Company Shares.
 
    2.2.5 Deemed Non-Election. For the purposes hereof, a holder of Company
  Shares who does not submit a Form of Election that is received by the
  Paying Agent prior to the Election Deadline (as defined in Section 2.2.6)
  shall be deemed not to have properly made a Cash Election. If Nipsco or the
  Paying Agent shall determine that any purported Cash Election was not
  properly made, such purported Cash Election shall be deemed to be of no
  force and effect.
 
    2.2.6 Election Deadline. Nipsco and the Company shall each use its best
  efforts to cause copies of the Form of Election to be mailed to the record
  holders of the Company Shares not less than thirty days prior to the
  Effective Time and to make the Form of Election available to all persons
  who become record holders of Company Shares subsequent to the date of such
  mailing and no later than the close of business on the seventh business day
  prior to the Effective Time. A Form of Election must be received by the
  Paying Agent by 5:00 p.m., New York City time, on the last NYSE trading day
  prior to the third business day before the anticipated Effective Time (the
  "Election Deadline") in order to be effective. All elections may be revoked
  until the Election Deadline in writing by the record holders submitting
  Forms of Election.
 
    2.2.7 Treasury Shares. Each Company Share issued and outstanding
  immediately prior to the Effective Time that is then held as a treasury
  share by the Company shall, by virtue of the Merger and without any action
  on the part of the Company, be canceled and retired and cease to exist,
  without any conversion thereof.
 
    2.2.8 Adjustment Per Tax Opinion. If, after having made the calculation
  under Section 2.2.3, the tax opinions referred to in Sections 7.2.3 and
  7.3.3 (the "Tax Opinions") cannot be rendered (as reasonably determined by
  SH&W and LLG&M), as a result of the Merger possibly failing to satisfy
  continuity-of-interest requirements under applicable federal income tax
  principles relating to reorganizations described in Section 368(a) of the
  Code, then Nipsco shall reduce, to the minimum extent necessary to enable
  the Tax Opinions to be rendered, the amount of cash to be delivered with
  respect to the Cash Election Shares and in lieu thereof shall deliver the
  number of Nipsco Common Shares having an aggregate value, based on the
  Nipsco Share Price, equal to the amount of such reduction, and the Cash
  Election Number shall be appropriately adjusted to give effect to such
  reduction.
 
    2.2.9 Adjustments to Prevent Dilution. In the event of any change in
  Nipsco Common Shares between the date of this Agreement and the Effective
  Time by reason of any stock split, stock dividend, subdivision,
  reclassification, recapitalization, combination, exchange or the like, the
  Exchange Ratio, the Cash Price and the calculation of all share prices
  provided for in this Agreement shall be proportionately adjusted to
  eliminate the effects of such event.
 
  2.3 Exchange of Certificates and Related Matters.
 
    2.3.1 Paying Agent. Prior to the Closing Date, Nipsco shall appoint the
  Paying Agent for the purpose of paying the Cash Price and issuing Nipsco
  Common Shares in exchange for Company Certificates. From time to time after
  completion of the allocation and election procedures in Section 2.2, Nipsco
  shall transmit, or shall cause the Surviving Corporation to transmit, cash,
  and shall deliver certificates representing Nipsco Common Shares, to the
  Paying Agent, for the benefit of the holders of Company Shares, when and as
  required for exchanges of Company Shares pursuant to Section 2.2.
 
                                      A-4

<PAGE>
 
    2.3.2 Letter of Transmittal. Promptly after the Effective Time (but in no
  event more than five business days thereafter), Nipsco shall require the
  Paying Agent to mail to each record holder of certificates that immediately
  prior to the Effective Time represented Company Shares that have been
  converted pursuant to Section 2.2 a letter of transmittal (which shall
  specify that delivery shall be effected, and risk of loss and title shall
  pass, only upon proper delivery of Company Certificates to the Paying Agent
  and shall be in such form and have such provisions as Nipsco reasonably may
  specify) and instructions for surrendering such Company Certificates and
  receiving the Merger Consideration (as defined in Section 2.3.3) to which
  such holder shall be entitled therefor pursuant to Section 2.2.
 
    2.3.3 Exchange Procedures. Upon surrender to the Paying Agent of a
  Company Certificate for cancellation, together with a letter of transmittal
  and such other customary documents as may be required by the instructions
  to the letter of transmittal (collectively, the "Certificate") and
  acceptance thereof by the Paying Agent, the holder of such Company
  Certificate shall be entitled to receive in exchange therefor (i)
  certificates evidencing that number of whole Nipsco Common Shares into
  which the Company Shares previously represented by such Company Certificate
  are converted in accordance with Section 2.2.1, (ii) the cash to which such
  holder is entitled in accordance with Section 2.2.1, (iii) the cash in lieu
  of fractional Nipsco Common Shares to which such holder is entitled
  pursuant to Section 2.3.6, and (iv) any dividends or other distributions to
  which such holder is entitled pursuant to Section 2.3.4 (the Nipsco Common
  Shares, dividends, distributions and cash described in clauses (i), (ii),
  (iii) and (iv) above being referred to collectively as the "Merger
  Consideration"). The Paying Agent shall accept such Certificate upon
  compliance with such reasonable terms and conditions as the Paying Agent
  may impose to effect an orderly exchange thereof in accordance with normal
  exchange practices. If the Merger Consideration (or any portion thereof) is
  to be delivered to any person other than the person in whose name the
  Company Certificate surrendered in exchange therefor is registered on the
  record books of the Company, it shall be a condition to such exchange that
  the Company Certificate so surrendered shall be properly endorsed or shall
  otherwise be in proper form for transfer and that the person requesting
  such exchange shall pay to the Paying Agent any transfer or other taxes
  required by reason of the payment of such consideration to a person other
  than the registered holder of the Company Certificate surrendered, or shall
  establish to the satisfaction of the Paying Agent that such tax has been
  paid or is not applicable. If any Company Certificate shall have been lost,
  stolen, mislaid or destroyed, then upon receipt of (a) an affidavit of that
  fact from the holder claiming such Company Certificate to be lost, mislaid,
  stolen or destroyed, (b) such bond, security or indemnity as the Company or
  the Paying Agent may reasonably require, and (c) any other documentation
  necessary to evidence and effect the bona fide exchange thereof, the
  Exchange Agent shall issue to such holder a certificate representing the
  number of shares of Company Shares into which the shares represented by
  such lost, stolen, mislaid or destroyed Company Certificate shall have been
  converted. After the Effective Time, there shall be no further transfer on
  the records of the Company or its transfer agent of any Company
  Certificate, and, if any such Company Certificate is presented to the
  Company for transfer, it shall be canceled against delivery of the Merger
  Consideration as hereinabove provided. Until surrendered as contemplated by
  this Section 2.3.3, each Company Certificate (other than a certificate
  representing Company Shares to be canceled in accordance with Section
  2.2.7), shall be deemed at any time after the Effective Time to represent
  only the right to receive upon such surrender the Merger Consideration,
  without any interest thereon.
 
    2.3.4 Distributions with Respect to Unexchanged Shares. No dividends or
  other distributions with respect to Nipsco Common Shares with a record date
  after the Effective Time shall be paid to the holder of any certificate
  that immediately prior to the Effective Time represented Company Shares
  that have been converted pursuant to Section 2.2, and no other part of the
  Merger Consideration shall be paid to any such holder, until the surrender
  for exchange of such Company Certificate in accordance with this Article
  II. Following surrender for exchange of any such Company Certificate, there
  shall be paid to the holder of certificates evidencing whole Nipsco Common
  Shares issued in exchange therefor, without interest, (i) at the time of
  such surrender, the amount of dividends or other distributions with a
  record date after the Effective Time theretofore paid with respect to the
  number of whole Nipsco Common Shares into which the Company Shares
  represented by such certificate immediately prior to the Effective Time
  were converted
 
                                      A-5

<PAGE>
 
  pursuant to Section 2.2, and (ii) at the appropriate payment date, the
  amount of dividends or other distributions with a record date after the
  Effective Time, but prior to such surrender, and with a payment date
  subsequent to such surrender, payable with respect to such whole Nipsco
  Common Shares.
 
    2.3.5 No Further Ownership Rights in Company Shares. The Merger
  Consideration paid upon the surrender for exchange of Company Certificates
  in accordance with the terms of this Article II shall be deemed to have
  been issued and paid in full satisfaction of all rights pertaining to the
  Company Shares theretofore represented by such certificates, subject,
  however, to the Surviving Corporation's obligation (if any) to pay any
  dividends or make any other distributions with a record date prior to the
  Effective Time that may have been declared by the Company on such Company
  Common Shares in accordance with the terms of this Agreement or prior to
  the date of this Agreement and that remain unpaid at the Effective Time.
 
    2.3.6 No Fractional Shares. No certificates or scrip representing
  fractional Nipsco Common Shares shall be issued upon the surrender for
  exchange of certificates that immediately prior to the Effective Time
  represented Company Shares that have been converted pursuant to Section
  2.2, and such fractional share interests shall not entitle the owner
  thereof to vote or to any rights of a shareholder of Nipsco.
  Notwithstanding any other provisions of this Agreement, each holder of
  Company Shares who would otherwise have been entitled to receive a fraction
  of a Nipsco Common Share (after taking into account all Company
  Certificates delivered by such holder) shall receive, in lieu thereof, cash
  (without interest) in an amount equal to such fractional part of a Nipsco
  Common Share multiplied by the Nipsco Share Price.
 
    2.3.7 Termination of Paying Agent. Any portion of cash payable under
  Section 2.2 or Nipsco Common Shares held by the Paying Agent that remains
  undistributed to the holders of the Company Certificates one year after the
  Effective Time shall be delivered to Nipsco, and any holders of Company
  Shares who have not theretofore complied with this Article II shall
  thereafter look only to Nipsco and only as general creditors thereof for
  payment, without interest, of their claim for any Merger Consideration and
  any dividends or distributions with respect to Nipsco Common Shares.
 
    2.3.8 No Liability. None of Nipsco, the Surviving Corporation or the
  Paying Agent shall be liable to any person in respect of any Merger
  Consideration payable with respect to Company Shares delivered to a public
  official pursuant to any applicable abandoned property, escheat or similar
  law. If any Company Certificates shall not have been surrendered prior to
  seven years after the Effective Time (or immediately prior to such earlier
  date on which any Merger Consideration in respect of such Company
  Certificate would otherwise escheat to or become the property of any
  Governmental Entity (as defined in Section 3.4)), any such cash, Company
  Shares, dividends or distributions payable in respect of such Company
  Certificate shall, to the extent permitted by applicable law, become the
  property of Nipsco free and clear of all claims or interest of any person
  previously entitled thereto.
 
                                  ARTICLE III
 
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
 
  The Company hereby represents and warrants to Nipsco and Acquisition as
follows:
 
  3.1 Organization, Standing and Corporate Power. The Company is a corporation
duly organized and validly existing under the laws of the Commonwealth of
Massachusetts, has the requisite corporate power and authority to carry on its
business as now being conducted, and is duly qualified or licensed to do
business and is in good standing in each jurisdiction in which the nature of
its business or the ownership or the leasing of its properties makes such
qualification or licensing necessary, except where the failure to be so
qualified or licensed would not individually or in the aggregate have a
Company Material Adverse Effect. As used in this Agreement, the term "Company
Material Adverse Effect" means a material adverse effect on the business,
assets, liabilities, results of operations, financial condition or prospects
of the Company and its subsidiaries taken as a whole. The Company has
delivered to Nipsco complete and correct copies of its Articles of
Organization and By-Laws, as amended to the date of this Agreement.
 
                                      A-6

<PAGE>
 
  3.2 Capital Structure. As of the date hereof, the authorized capital stock
of the Company consists of 36,000,000 Company Shares and 150,000 shares of
cumulative preferred stock, $50 par value per share (the "Company Preferred A
Shares") and 200,000 shares of cumulative preferred stock, $100 par value per
share (the "Company Preferred B Shares"). At the close of business on December
12, 1997 (i) 13,514,094 Company Shares were issued and outstanding; (ii)
44,399 shares of Company Preferred A Shares were issued and outstanding; and
(iii) 26,989 shares of Company Preferred B Shares were issued and outstanding.
The Company has no Company Shares, Company Preferred A Shares or Company
Preferred B Shares reserved for issuance, except that, as of December 12,
1997, there were 1,602,752 Company Shares reserved for issuance pursuant to
the Company's Key Employee Stock Option Plan, Profit Sharing Plan and Stock
Performance Sharing Plan (the "Company Stock Plans") and the Company's
Dividend Reinvestment Plan and 13,514,094 Company Shares reserved for issuance
under the Shareholder Rights Agreement dated as of November 15, 1989 between
the Company and The First National Bank of Boston as rights agent (the
"Shareholder Rights Agreement"). In addition, the Company has reacquired and
holds 1,620 Company Shares in treasury for reissuance pursuant to the Company
Stock Accumulation Plan for Outside Directors. All outstanding shares of
capital stock of the Company are duly authorized, validly issued, fully paid
and nonassessable and not subject to preemptive rights. No bonds, debentures,
notes or other indebtedness of the Company conferring the right to vote (or
convertible into, or exchangeable for, securities conferring the right to
vote) on any matters on which the shareholders of the Company may vote are
issued or outstanding. Section 3.2 of the disclosure schedule dated as of the
date hereof of the Company (the "Company Disclosure Schedule") sets forth the
name of each participant in each of the Company Stock Plans and the number of
Company Shares awarded to such participant as of the date hereof. Except as
set forth above or in Section 3.2 of the Company Disclosure Schedule, the
Company does not have any outstanding option, warrant, subscription or other
right, agreement or commitment that either obligates the Company to issue,
sell or transfer, repurchase, redeem or otherwise acquire or vote any shares
of capital stock of the Company or that restricts the transfer of Company
Shares.
 
  3.3 Subsidiaries.
 
    3.3.1 Section 3.3.1 of the Company Disclosure Schedule sets forth the
  name of each Subsidiary of the Company and the jurisdiction of its
  organization. Each Subsidiary of the Company is a corporation or
  partnership duly organized and validly existing under the laws of the
  jurisdiction of its organization and has the corporate or partnership power
  and authority and all necessary government approvals to own, lease and
  operate its properties and to carry on its business as now being conducted,
  except where the failure to be so organized, existing and in good standing
  or to have such power and authority or necessary governmental approvals
  would not individually or in the aggregate have a Company Material Adverse
  Effect. Each Subsidiary of the Company is duly qualified or licensed and in
  good standing to do business in each jurisdiction in which the property
  owned, leased or operated by it or the nature of the business conducted by
  it makes such qualification or licensing necessary, except in such
  jurisdictions where the failure to be so qualified or licensed and in good
  standing would not individually or in the aggregate have a Company Material
  Adverse Effect. A "Subsidiary" of Brass means any corporation or other
  entity (including joint ventures, partnerships and other business
  associations) in which Brass directly or indirectly owns outstanding
  capital stock or other voting securities having the power to elect a
  majority of the directors or similar members of the governing body of such
  corporation or other entity, or otherwise to direct to the management and
  policies of such corporation or other entity.
 
    3.3.2 Section 3.3.2 of the Company Disclosure Schedule sets forth, as to
  each Subsidiary of the Company, its authorized capital structure and the
  number of its issued and outstanding shares of capital stock or other
  ownership units. Except as set forth in Section 3.3.2 of the Company
  Disclosure Schedule, the Company is, directly or indirectly, the record and
  beneficial owner of all of the outstanding shares of capital stock or other
  ownership units of each of its Subsidiaries, and no capital stock or other
  ownership units of any such Subsidiary is or may become required to be
  issued by reason of any options, warrants, rights to subscribe to, calls or
  commitments of any character whatsoever relating to, or securities or
  rights convertible into or exchangeable or exercisable for, shares of any
  capital stock or other ownership units of any such Subsidiary, and there
  are no contracts, commitments, understandings or arrangements by which
 
                                      A-7

<PAGE>
 
  the Company or any of its Subsidiaries is or may be bound to issue, redeem,
  purchase or sell additional shares of capital stock or other ownership
  units of any such Subsidiary or securities convertible into or exchangeable
  or exercisable for any such shares or units. All of such shares and other
  ownership units are validly issued, fully paid and nonassessable and,
  except as set forth in Section 3.3.2 of the Company Disclosure Schedule,
  are owned by the Company, or by a wholly owned Subsidiary of the Company,
  free and clear of all liens, claims, encumbrances, restraints on
  alienation, or any other restrictions with respect to the transferability
  or assignability thereof (other than restrictions on transfer imposed by
  federal or state securities laws).
 
  3.4 Authority; Noncontravention. The Company has the requisite corporate
power and authority to enter into this Agreement and to carry out its
obligations hereunder. The execution and delivery of this Agreement by the
Company and the consummation by the Company of the transactions contemplated
hereby have been duly authorized by all necessary corporate action on the part
of the Company, subject, in the case of the Merger, to the approval of its
shareholders as set forth in Section 5.2. This Agreement has been duly
executed and delivered by the Company and, assuming this Agreement has been
duly executed and delivered by Nipsco, constitutes a valid and binding
obligation of the Company, enforceable against the Company in accordance with
its terms, except that the enforcement thereof may be limited by bankruptcy,
insolvency, reorganization, moratorium or similar laws now or hereafter in
effect relating to creditors' rights generally and by general principles of
equity (regardless of whether enforceability is considered in a proceeding at
law or in equity). Except as set forth in Section 3.4 of the Company
Disclosure Schedule, the execution and delivery of this Agreement do not, and
the consummation of the transactions contemplated by this Agreement and
compliance with the provisions hereof will not, (i) conflict with any of the
provisions of the Articles of Organization or By-Laws of the Company or the
comparable documents of any of its Subsidiaries or conflict with the joint
venture agreement or comparable document of any joint venture, partnership or
other business association or entity to which the Company or a Subsidiary is a
party, (ii) subject to the governmental filings and other matters referred to
in the following sentence, conflict with, result in a breach of or default
(with or without notice or lapse of time, or both) under, or give rise to a
right of termination, cancellation or acceleration of any obligation or loss
of a material benefit under, or require the consent (the "Company Required
Consents") of any person under, any indenture or other agreement, permit,
concession, franchise, license or similar instrument or undertaking to which
the Company or any of its Subsidiaries is a party or by which the Company or
any of its Subsidiaries or any of their assets is bound or affected, or (iii)
subject to the governmental filings and other matters referred to in the
following sentence, contravene any law, rule or regulation of any state or of
the United States of America or any political subdivision thereof or therein,
or any order, writ, judgment, injunction, decree, determination or award
currently in effect, except where, in the case of clauses (ii) and (iii)
above, such conflicts, breaches, defaults and similar matters, would not,
individually or in the aggregate, have a Company Material Adverse Effect or
materially and adversely affect the Company's ability to consummate the
transactions contemplated hereby. No consent, approval or authorization of, or
declaration or filing with, or notice to, any governmental agency or
regulatory body, court, agency, commission, division, department, public body
or other authority (a "Governmental Entity") that has not been received or
made, is required by or with respect to the Company or any of its Subsidiaries
in connection with the execution and delivery of this Agreement by the Company
or the consummation by the Company of the transactions contemplated hereby,
except for (a) the filing of pre-merger notification and report forms under
the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR
Act"), with respect to the Merger; (b) the filing of applications for
authorization for the Merger with the Federal Energy Regulatory Commission
(the "FERC"), the Massachusetts Department of Telecommunications and Energy
("MDTE"), the New Hampshire Public Utilities Commission ("NHMPUC") and the
Maine Public Utilities Commission ("MNEPUC"); (c) the filing with the
Securities and Exchange Commission (the "SEC") of a proxy statement (as
defined in Section 5.1.1) to be included in the Registration Statement (as
defined in Section 4.4) relating to the approval by the shareholders of the
Company of the Merger and such reports under the Securities Exchange Act of
1934, as amended (the "Exchange Act"), as may be required in connection with
this Agreement and the transactions contemplated by this Agreement; (d) the
filing of articles of merger with the Massachusetts Secretary and appropriate
documents with the relevant authorities of other states in which the Company
is qualified to do business; and (e) such other consents, approvals,
authorizations, filings or notices as
 
                                      A-8

<PAGE>
 
are set forth in Section 3.4 of the Company Disclosure Schedule or as, in the
aggregate could not reasonably be expected to have a Company Material Adverse
Effect (collectively, the "Company Required Statutory Approvals").
 
  3.5 SEC Documents and Financial Statements.
 
    3.5.1 Except as set forth in Section 3.5.1 of the Company Disclosure
  Schedule, the Company, and each of its Subsidiaries that is or was required
  to do so, has timely filed all required reports, schedules, forms,
  statements and other documents with the SEC since October 1, 1992 (the
  "Company SEC Documents"). As of their respective dates, the Company SEC
  Documents complied with the requirements of the Securities Act of 1933, as
  amended (the "Securities Act"), or the Exchange Act, as the case may be,
  and the rules and regulations of the SEC promulgated thereunder applicable
  to such Company SEC Documents, and none of the Company SEC Documents as of
  such dates contained any untrue statement of a material fact or omitted to
  state a material fact required to be stated therein or necessary in order
  to make the statements therein, in light of the circumstances under which
  they were made, not misleading.
 
    3.5.2 The consolidated financial statements of the Company included in
  the Company SEC Documents comply as to form in all material respects with
  applicable accounting requirements and the published rules and regulations
  of the SEC with respect thereto, have been prepared in accordance with
  generally accepted accounting principles applied on a consistent basis
  during the periods involved ("GAAP") (except as may be indicated in the
  notes thereto or, in the case of unaudited interim financial statements, as
  permitted by Rule 10-01 of Regulation S-X) and fairly present, in all
  material respects, the consolidated financial position of the Company and
  its consolidated Subsidiaries as of the dates thereof and the consolidated
  results of their operations, changes in shareholders' equity and
  consolidated cash flows for the periods then ended (subject, in the case of
  unaudited interim financial statements, to normal recurring adjustments,
  none of which is material).
 
    3.5.3 Except as disclosed in the Company SEC Documents filed and publicly
  available prior to December 16, 1997 (the "Filed Company SEC Documents") or
  in the Company Disclosure Schedule, neither the Company nor any of its
  Subsidiaries has any absolute, accrued, contingent or other liabilities or
  obligations due or to become due, and there are no claims or causes of
  action (including but not limited to those relating to any Company Benefit
  Plan (as defined in Section 3.8.1) formerly maintained by the Company or
  any of its Subsidiaries or a Company ERISA Affiliate (as defined in Section
  3.8.1) on or after January 1, 1992) that have been or, to the knowledge of
  the Company, may be asserted against the Company or any of its
  Subsidiaries, except (i) as and to the extent reflected or reserved against
  on the balance sheet included in the Company's Annual Report on Form 10-K
  for the year ended September 30, 1997 (the "Company Base Balance Sheet"),
  or included in the notes to the Company Base Balance Sheet, (ii) for normal
  and recurring liabilities incurred since September 30, 1997, in the
  ordinary course of business consistent with past practice, and (iii) for
  such other liabilities and obligations that are not in the aggregate
  reasonably likely to have a Company Material Adverse Effect. For purposes
  of this Agreement, it is understood that all references to the knowledge of
  the Company means solely the knowledge of any one or more of the
  individuals listed on Section 3.5.3 of the Company Disclosure Schedule.
 
  3.6 Absence of Certain Changes or Events. Except as disclosed in the Filed
Company SEC Documents or in Section 3.6 of the Company Disclosure Schedule,
since the date of the Company Base Balance Sheet, the Company and its
Subsidiaries have conducted their business only in the ordinary course
consistent with past practice, and, except as otherwise expressly permitted by
this Agreement, there has not been (i) any change that has had or that could
reasonably be expected to have a Company Material Adverse Effect, (ii) any
declaration, setting aside or payment of any dividend or other distribution
(whether in cash, stock or property) with respect to any of the Company's
outstanding capital stock (other than regular quarterly cash dividends in
accordance with the Company's present dividend policy), (iii) any split,
combination or reclassification of any of its outstanding capital stock or any
issuance or the authorization of any issuance of any other securities in
respect of, in lieu of or in substitution for shares of its outstanding
capital stock, (iv) any entry by the Company or any of its Subsidiaries into
any employment, severance, change-of-control, termination or similar agreement
with any
 
                                      A-9

<PAGE>
 
officer, director or other employee, or any increase in the compensation or
severance or termination benefits payable to any director, officer or other
employee of the Company or any of its Subsidiaries (except in the ordinary
course of business consistent with past practice, or as was required under
employment agreements in effect as of the date of the Company Base Balance
Sheet) or (v) any change in the method of accounting or policy used by the
Company or any of its Subsidiaries and disclosed in the financial statements
included in the Filed Company SEC Documents.
 
  3.7 Real and Personal Property.
 
    3.7.1 The Company and its Subsidiaries own, or have a valid and
  enforceable right to use or a valid and enforceable leasehold interest in,
  all real property (including all buildings, fixtures and other improvements
  thereto) used by them in the conduct of their respective businesses as such
  businesses are now being conducted. Except as disclosed in the Filed
  Company SEC Documents or Section 3.7.1 of the Company Disclosure Schedule,
  neither the Company's nor any of its Subsidiaries' ownership of or
  leasehold interest in any such property is subject to any mortgage, pledge,
  lien, option, conditional sale agreement, encumbrance, security interest,
  title exception or restriction or claim or charge of any kind
  ("Encumbrances"), except for such Encumbrances as are not in the aggregate
  reasonably likely to have a Company Material Adverse Effect. All such
  property is in good condition and repair and is suitable in all material
  respects for the purposes for which it is now being used in the conduct of
  the businesses of the Company and its Subsidiaries, except to the extent
  that the poor condition or unsuitability of any such property is not in the
  aggregate reasonably likely to have a Company Material Adverse Effect.
 
    3.7.2 Except as otherwise disclosed in Section 3.7.2 of the Company
  Disclosure Schedule, all personal property that is owned by the Company or
  any of its Subsidiaries or used by any of them in the conduct of their
  respective businesses is owned free and clear of any Encumbrances, except
  for such Encumbrances as are not in the aggregate reasonably likely to have
  a Company Material Adverse Effect. All such property is in good working
  condition, subject to normal wear and tear, and is suitable in all material
  respects for the purposes for which it is now being used in the conduct of
  the businesses of the Company and its Subsidiaries, except to the extent
  that the poor condition or unsuitability of any such property is not in the
  aggregate reasonably likely to have a Company Material Adverse Effect.
 
  3.8 Employee Matters; ERISA.
 
    3.8.1 Section 3.8.1 of the Company Disclosure Schedule contains a true
  and complete list of: (i) each employee benefit plan, program, policy,
  agreement or arrangement covering employees, former employees, directors or
  former directors of the Company (or any of its Subsidiaries) or any of
  their dependents or beneficiaries, or providing benefits to such persons in
  respect of services provided to any such entity, including but not limited
  to any "employee benefit plan" within the meaning of Section 3(3) of the
  Employee Retirement Income Security Act of 1974, as amended ("ERISA")
  (whether or not terminated, if the Company or any of its Subsidiaries could
  have statutory or contractual liability with respect thereto on or after
  the date hereof); (ii) each management, employment, deferred compensation,
  severance (including any payment, right or benefit resulting from a change
  in control), bonus or other contract for personal services with or covering
  any current or former officer, employee or director or any consulting
  contract with any person who prior to entering into such contract was a
  director, officer or employee of the Company or any of its Subsidiaries
  (whether or not terminated, if the Company or any of its Subsidiaries could
  have statutory or contractual liability with respect thereto on or after
  the date hereof); (iii) each "employee pension benefit plan" (within the
  meaning of ERISA Section 3(2)) subject to Title IV of ERISA or the minimum
  funding requirements of Code Section 412 maintained or contributed to by
  the Company or any entity required to be aggregated therewith pursuant to
  Code Section 414(b), (c) or (m) (each, a "Company ERISA Affiliate") at any
  time during the seven-year period immediately preceding the date hereof
  (collectively, the "Company Benefit Plans") and (iv) with respect to each
  Company Benefit Plan, the source or sources of benefit payments under the
  plan (including, where applicable, the identity of any trust (whether or
  not a grantor trust), insurance contract, investment advisor agreement,
  custodial account, agency
 
                                     A-10

<PAGE>
 
  agreement, or other arrangement that holds the assets of, or serves as a
  funding vehicle or source of benefits for, such Company Benefit Plan).
 
    3.8.2 Except as disclosed in Section 3.8.2 of the Company Disclosure
  Schedule, all contributions and other payments required to have been made
  by the Company or any of its Subsidiaries pursuant to any Company Benefit
  Plan (or to any person pursuant to the terms thereof) have been timely made
  or provided for, or the amount of such payment or contribution obligation
  has been reflected in the Company's financial statements reflected in the
  Filed Company SEC Documents.
 
    3.8.3 Except as disclosed in Section 3.8.3 of the Company Disclosure
  Schedule, each Company Benefit Plan that is intended to be "qualified"
  within the meaning of Code Section 401(a) has been determined by the IRS
  within the last three years to be so qualified, and, to the best knowledge
  of the Company, no event or condition exists or has occurred that could
  reasonably be expected to result in the revocation of any such
  determination. The Company and each of its Subsidiaries are in compliance
  with, and each Company Benefit Plan is and has been operated in compliance
  with, its terms and all applicable laws, rules and regulations governing
  such Plans, including without limitation ERISA and the Code, except for
  violations that could not reasonably be expected to have a Company Material
  Adverse Effect. To the best knowledge of the Company, (i) no individual or
  entity has engaged in any transaction with respect to any Company Benefit
  Plan that is a non-exempt prohibited transaction under Section 406 of ERISA
  or Section 4495 of the Code, or as a result of which the Company or any of
  its Subsidiaries could reasonably expect to be subject to liability
  pursuant to ERISA Section 409 or 502 or subject to an excise tax pursuant
  to Code Section 4975, (ii) no Company Benefit Plan is subject to any
  ongoing audit, investigation, or other administrative proceeding of the
  Internal Revenue Service (the "IRS"), the Department of Labor (the "DOL"),
  or any other federal, state or local Governmental Entity, (iii) no Company
  Benefit Plan is the subject of any pending application for administrative
  relief under any voluntary compliance program of any Governmental Entity
  (including without limitation the IRS's Voluntary Compliance Resolution
  Program or Walk-in Closing Agreement Program or the DOL's Delinquent Filer
  Voluntary Compliance Program), and (iv) no matter is pending relating to
  any Company Benefit Plan before any court.
 
    3.8.4 Except as disclosed in Section 3.8.4 of the Company Disclosure
  Schedule with respect to the Company Benefit Plans, individually and in the
  aggregate, no termination or partial termination of any Company Benefit
  Plan or other event has occurred at any time, and, to the best knowledge of
  the Company, there exists no condition or set of circumstances with respect
  to any Company Benefit Plan that could subject the Company or any of its
  Subsidiaries to any liability arising under the Code, ERISA or any other
  applicable law (including without limitation any liability to or under any
  such Plan or to the Pension Benefit Guaranty Corporation (the "PBGC")), or
  under any indemnity agreement to which the Company, any of its Subsidiaries
  or any Company ERISA Affiliate is a party, which liability, excluding
  liability for benefit claims and funding obligations payable in the
  ordinary course and liability for PBGC insurance premiums payable in the
  ordinary course, is reasonably likely to have a Company Material Adverse
  Effect. PBGC has not initiated any proceedings, and there exists no event
  or condition which would constitute grounds for initiation of proceedings
  by PBGC to terminate any Company Benefit Plan under Section 4042 of ERISA.
 
    3.8.5 Except as disclosed in Section 3.8.5 of the Company Disclosure
  Schedule, no Company Benefit Plan that is a "welfare plan" (within the
  meaning of ERISA Section 3(1)) provides benefits for any retired or former
  employees (other than as required pursuant to ERISA Section 601).
 
    3.8.6 The Company has made or will make available to Nipsco a true and
  correct copy of each collective bargaining agreement to which the Company
  is a party or under which the Company has obligations and, with respect to
  each Company Benefit Plan, as applicable (i) the current plan document
  (including all amendments adopted since the most recent restatement) and
  its most recently prepared summary plan description and all summaries of
  material modifications prepared since the most recent summary plan
  description, (ii) the annual report (IRS Form 5500 Series) including
  financial statements prepared for the most recent three plan years, (iii)
  each related trust agreement, insurance contract, annuity contract, service
  provider or investment management or advisory agreement (including all
  amendments to each such document), (iv) the most recent IRS determination
  letter with respect to the qualified status under
 
                                     A-11

<PAGE>
 
  Code Section 401(a) of such Plan and a copy of any application for an IRS
  determination letter filed since the most recent IRS determination letter
  was issued and (v) the actuarial reports or valuations for the most recent
  three plan years.
 
    3.8.7 Except as disclosed in Section 3.8.7 of the Company Disclosure
  Schedule, the consummation or announcement of any transaction contemplated
  by this Agreement will not (either alone or upon the occurrence of any
  additional or further acts or events) result in any (i) payment (whether of
  severance pay or otherwise) becoming due from the Company or any of its
  Subsidiaries under any applicable Company Benefit Plans to any officer,
  employee, former employee, director or former director thereof or to the
  trustee under any "rabbi trust," "secular trust" or similar arrangement, or
  (ii) benefit under any Company Benefit Plan being established or becoming
  accelerated, vested or payable, except for a payment or benefit that would
  have been payable under the same terms and conditions without regard to the
  transactions contemplated by this Agreement.
 
    3.8.8 Except as disclosed in Section 3.8.8 of the Company Disclosure
  Schedule, each Company Benefit Plan that is subject to either or both of
  the minimum funding requirements of ERISA Section 302 or to Title IV of
  ERISA has assets that, as of the date hereof, have a fair market value
  equal to or exceeding the present value, as determined by the Plan's
  independent enrolled actuary, of the accrued benefit obligations thereunder
  on a termination basis, as of the date hereof, based on the actuarial
  methods, tables and assumptions theretofore utilized by such Plan's
  enrolled actuary in preparing such Plan's most recently prepared actuarial
  valuation report, except to the extent that applicable law would require
  the use of different actuarial assumptions if such Plan was to be
  terminated as of the date hereof. No Company Benefit Plan subject to the
  minimum funding requirements of ERISA Section 302 has incurred any
  "accumulated funding deficiency" (within the meaning of ERISA Section 302
  or Section 412 of the Code) as of the date hereof. No waiver from the
  minimum funding standards of Section 302 of ERISA or Section 412 of the
  Code has been obtained, applied for or is contemplated with respect to any
  Company Benefit Plan.
 
    3.8.9 Except as disclosed in Section 3.8.9 of the Company Disclosure
  Schedule, no Company Benefit Plan is or was at any time a "multiemployer
  plan" (within the meaning of ERISA Section 4001(a) (3)), a multiple
  employer plan described in Code Section 413(c), or a "multiple employer
  welfare arrangement" (within the meaning of ERISA Section 3(40)); and none
  of the Company, any Subsidiary thereof or any Company ERISA Affiliate has
  at any time within the past five years been obligated to contribute to, or
  otherwise has or has had any liability with respect to, any multiemployer
  plan, multiple employer plan, or multiple employer welfare arrangement. The
  Company and its Subsidiaries have not made or incurred a "complete
  withdrawal" or a "partial withdrawal," as such terms are defined in ERISA
  Sections 4203 and 4205, from any multiemployer plan at any time during the
  five-calendar-year period immediately preceding the date of this Agreement
  and the transactions contemplated by the Agreement will not, in and of
  themselves, give rise to such a "complete withdrawal" or "partial
  withdrawal." Neither the Company nor any Subsidiary has incurred or is
  aware of any withdrawal liability (as defined in Section 4201 of ERISA)
  assessed against any of them with respect to any multiemployer plan.
 
    3.8.10 Except as disclosed in Section 3.8.10 of the Company Disclosure
  Schedule: (i) neither the Company nor any Subsidiary of the Company is
  subject to any legal, contractual, equitable or other obligation to
  establish as of any date any employee benefit plan of any nature, including
  without limitation any pension, profit sharing, welfare, post-retirement
  welfare, stock option, stock or cash award, nonqualified deferred
  compensation or executive compensation plan, policy or practice, and (ii)
  to the best knowledge of the Company, after review of all Company Benefit
  Plan documents, the Company or one or more of its Subsidiaries may, in any
  manner, and without the consent of any employee, beneficiary or dependent,
  employees' organization or other person, terminate, modify or amend any
  Company Benefit Plan or any other employee benefit plan, policy, program or
  practice (or its participation in any such Company Benefit Plan or other
  employee benefit plan, policy, program or practice) at any time sponsored,
  maintained or contributed to by the Company or any of its Subsidiaries,
  effective as of any date before, on or after the Effective Time except to
  the extent that any retroactive amendment would be prohibited by ERISA
  Section 204(g) or would deprive a plan participant of a benefit in which
  such participant has a vested right.
 
                                     A-12

<PAGE>
 
    3.8.11 Except as disclosed in Section 3.8.11 of the Company Disclosure
  Schedule, (i) no event constituting a "reportable event" (within the
  meaning of ERISA Section 4043(b) and the regulations issued thereunder) for
  which the 30-day notice requirement has not been waived by the PBGC has
  occurred with respect to any Company Benefit Plan and (ii) no liability,
  claim, action or litigation has been made, commenced or, to the best
  knowledge of the Company, threatened, by or against the Company or any of
  its Subsidiaries with respect to any Company Benefit Plan (other than for
  benefits or PBGC premiums payable in the ordinary course) that is
  reasonably likely to have a Company Material Adverse Effect.
 
  3.9 Taxes. "Taxes," as used in this Agreement, means any federal, state,
county, local or foreign taxes, charges, fees, levies, or other assessments,
including all net income, gross income, sales and use, ad valorem, transfer,
gains, profits, excise, franchise, real and personal property, gross receipts,
capital stock, production, business and occupation, disability, employment,
payroll, license, estimated, stamp, custom duties, severance or withholding
taxes or charges imposed by any Governmental Entity, and includes any interest
and penalties (civil or criminal) on or additions to any such taxes and any
expenses incurred in connection with the determination, settlement or
litigation of any tax liability. "Tax Return," as used in this Agreement,
means a report, return or other information required to be supplied to a
Governmental Entity with respect to Taxes including, where permitted or
required, combined or consolidated returns for any group of entities that
includes the Company or any of its Subsidiaries, on the one hand, or Nipsco or
any of its Subsidiaries, on the other hand. "Tax Rulings," as used in this
Agreement, shall mean a written ruling of a taxing authority relating to
Taxes. "Closing Agreement," as used in this Agreement, shall mean a written
and legally binding agreement with a taxing authority relating to Taxes.
Except as disclosed in Section 3.9 of the Company Disclosure Schedule, there
are no Tax matters that, individually or in the aggregate, would reasonably be
likely to have a Company Material Adverse Effect.
 
    3.9.1 Filing of Timely Tax Returns. The Company and each of its
  Subsidiaries have filed all Tax Returns required to be filed by each of
  them under applicable law. All Tax Returns were in all material respects
  (and, as to Tax Returns not filed as of the date hereof, will be) true,
  complete and correct and filed on a timely basis.
 
    3.9.2 Payment of Taxes. The Company and each of its Subsidiaries have,
  within the time and in the manner prescribed by law, paid (and until the
  Closing Date will pay within the time and in the manner prescribed by law)
  all Taxes that are currently due and payable except for Taxes for which
  reserves have been taken on the Company Balance Sheet.
 
    3.9.3 Tax Reserves. The Company and its Subsidiaries have established
  (and until the Closing Date will maintain) on their books and records
  reserves adequate to pay all Taxes and reserves for deferred income taxes
  in accordance with GAAP.
 
    3.9.4 Tax Liens. There are no Tax liens upon the assets of the Company or
  any of its Subsidiaries except liens for Taxes not yet due.
 
    3.9.5 Withholding Taxes. The Company and each of its Subsidiaries have
  complied (and until the Closing Date will comply) in all material respects
  with the provisions of the Code relating to the payment and withholding of
  Taxes, including without limitation the withholding and reporting
  requirements under Code Sections 1441 through 1464, 3401 through 3606, and
  6041 and 6049, as well as similar provisions under any other laws, and have
  within the time and in the manner prescribed by law withheld from employee
  wages and paid over to the proper governmental authorities all amounts
  required.
 
    3.9.6 Extensions of Time for Filing Tax Returns. Neither the Company nor
  any of its Subsidiaries has requested any extension of time within which to
  file any Tax Return which Tax Return has not since been filed.
 
    3.9.7 Waivers of Statute of Limitations. Neither the Company nor any of
  its Subsidiaries has executed any outstanding waivers or comparable
  consents regarding the application of the statute of limitations with
  respect to any Taxes or Tax Returns.
 
                                     A-13

<PAGE>
 
    3.9.8 Expiration of Statute of Limitations. The statute of limitations
  for the assessment of all Taxes has expired for all applicable Tax Returns
  of the Company and each of its Subsidiaries or those Tax Returns have been
  examined by the appropriate taxing authorities for all periods through the
  date hereof, and no deficiency for any Taxes has been proposed, asserted or
  assessed against the Company or any of its Subsidiaries that has not been
  resolved and paid in full.
 
    3.9.9 Audit, Administrative and Court Proceedings. No audits or other
  administrative proceedings or court proceedings are presently pending with
  regard to any Taxes or Tax Returns of the Company or any of its
  Subsidiaries.
 
    3.9.10 Powers of Attorney. No power of attorney currently in force has
  been granted by the Company or any of its Subsidiaries concerning any Tax
  matter.
 
    3.9.11 Tax Rulings. Neither the Company nor any of its Subsidiaries has
  received a Tax Ruling or entered into a Closing Agreement with any taxing
  authority that would have a continuing effect after the Closing Date.
 
    3.9.12 Availability of Tax Returns. The Company and its Subsidiaries have
  made available to the Company complete and accurate copies, covering all
  open years, of (i) all Tax Returns, and any amendments thereto, filed by
  the Company or any of its Subsidiaries, (ii) all audit reports received
  from any taxing authority relating to any Tax Return filed by the Company
  or any of its Subsidiaries and (iii) any Closing Agreements entered into by
  the Company or any of its Subsidiaries with any taxing authority.
 
    3.9.13 Tax-Sharing Agreements. Except as disclosed in Section 3.9.13 of
  the Company Disclosure Schedule, there are no agreements relating to the
  allocation or sharing of Taxes between or among the Company and any of its
  Subsidiaries.
 
    3.9.14 Code Section 341(f). Neither the Company nor any of its
  Subsidiaries has filed a consent pursuant to Code Section 341(f) or has
  agreed to have Code Section 341(f)(2) apply to any disposition of a
  subsection (f) asset (as such term is defined in Code Section 341(f)(4))
  owned by the Company or any of its Subsidiaries.
 
    3.9.15 Code Section 168. No property of the Company or any of its
  Subsidiaries is property that the Company or any such Subsidiary or any
  party to this transaction is or will be required to treat as being owned by
  another person pursuant to the provisions of Code Section 168(f)(8) (as in
  effect prior to its amendment by the Tax Reform Act of 1986) or is tax-
  exempt use property within the meaning of Code Section 168.
 
    3.9.16 Code Section 481 Adjustments. Neither the Company nor any of its
  Subsidiaries is required to include in income any adjustment pursuant to
  Code Section 481(a) by reason of a voluntary change in accounting method
  initiated by the Company or any of its Subsidiaries, and, to the best of
  the knowledge of the Company, the IRS has not proposed any such adjustment
  or change in accounting method.
 
    3.9.17 Code Sections 6661 and 6662. The Company and its Subsidiaries have
  or had substantial authority (within the meaning of Section 6661 of the
  Code for Tax Returns filed on or before December 31, 1990, and within the
  meaning of Section 6662 of the Code for Tax Returns filed after December
  31, 1990) for all transactions that could give rise to an understatement of
  federal income tax (within the meaning of Section 6661 of the Code for Tax
  Returns filed on or before December 31, 1990, and within the meaning of
  Section 6662 of the Code for Tax Returns filed after December 31, 1990).
 
    3.9.18 Code Section 280G. Except as disclosed in Section 3.9.18 of the
  Disclosure Schedule, neither the Company nor any of its Subsidiaries is a
  party to any agreement, contract, or arrangement that could reasonably be
  expected to result, on account of the transactions contemplated hereunder,
  separately or in the aggregate, in the payment of any "excess parachute
  payment" within the meaning of Code Section 280G.
 
    3.9.19 NOLS. As of December 31, 1997, the Company and its Subsidiaries
  had net operating loss carryovers available to offset future income as
  disclosed in Section 3.9.19 of the Disclosure Schedule.
 
                                     A-14

<PAGE>
 
  Section 3.9.19 of the Disclosure Schedule discloses the amount of and year
  of expiration of each company's net operating loss carryovers.
 
    3.9.20 Credit Carryovers. As of December 31, 1997, the Company and its
  Subsidiaries had tax credit carryovers available to offset future tax
  liability as disclosed in Section 3.9.20 of the Company Disclosure
  Schedule. Section 3.9.20 of the Company Disclosure Schedule discloses the
  amount and year of expiration of each company's tax credit carryovers.
 
    3.9.21 Code Section 338 Elections. No election under Code Section 338 (or
  any predecessor provision) has been made by or with respect to the Company
  or any of its Subsidiaries or any of their respective assets or properties.
 
    3.9.22 Acquisition Indebtedness. No indebtedness of the Company or any of
  its Subsidiaries is "corporate acquisition indebtedness" within the meaning
  of Code Section 279(b).
 
    3.9.23 Intercompany Transactions. Neither the Company nor any of its
  Subsidiaries has engaged in any intercompany transactions within the
  meaning of Treasury Regulations Section 1.1502-13 for which any income or
  gain will remain unrecognized as of the close of the last taxable year
  prior to the Closing Date.
 
    3.9.24 Liability for Others. Neither the Company nor any of its
  Subsidiaries has any liability for Taxes of any person other than the
  Company and its Subsidiaries (i) under Treasury Regulations Section 1.1502-
  6 (or any similar provision of state, local or foreign law) as a transferee
  or successor, (ii) by contract or (iii) otherwise.
 
  3.10 Compliance with Applicable Laws. Except as disclosed in Section 3.10 of
the Company Disclosure Schedule:
 
    3.10.1 The business of the Company and each of its Subsidiaries is being
  conducted in compliance in all material respects with all applicable laws,
  ordinances, rules and regulations, decrees and orders of any Governmental
  Entity, and all material notices, reports, documents and other information
  required to be filed thereunder within three years of the date hereof were
  properly filed and were in compliance in all material respects with such
  laws.
 
    3.10.2 Each of the Company and each of its Subsidiaries has all material
  licenses (including, without limitation, utility licenses), permits,
  authorizations, franchises and rights ("Licenses") that are necessary for
  it to own or lease, as the case may be, and operate its properties and
  assets and to conduct its business as now conducted. The business of the
  Company and each of its Subsidiaries has been and is being conducted in
  compliance in all material respects with all such Licenses. All
  restrictions and limitations on those Licenses requested or required by any
  utility regulator are disclosed in the Filed Company SEC Documents or in
  Section 3.10 of the Company Disclosure Schedule. All such Licenses are in
  full force and effect, and there is no proceeding or investigation pending
  or, to the knowledge of the Company, threatened that would reasonably be
  expected to lead to the revocation, amendment, failure to renew,
  limitation, suspension or restriction of any such License.
 
    3.10.3 The Company and each of its Subsidiaries that has been or is
  required to do so has filed all forms, reports, statements and other
  documents required by law to be filed by it with the FERC, MDPU, NHMPUC and
  the MNEPUC, and such forms, reports, statements and other documents, did
  not at the time they were filed contain any untrue statement of a material
  fact or omit to state a material fact required to be stated therein or
  necessary in order to make the statements therein, in light of the
  circumstances under which they were made, not misleading.
 
  3.11 Environmental Protection.
 
    3.11.1 Except as disclosed in Section 3.11.1 of the Company Disclosure
  Schedule or as disclosed in the Company SEC Documents, the Company and its
  Subsidiaries are and have been in material compliance with all applicable
  Environmental Laws (as defined in Section 3.11.7), except where the failure
  to be or to have so been in material compliance, in the aggregate, is not
  reasonably likely to have a Company Material
 
                                     A-15

<PAGE>
 
  Adverse Effect. Except as disclosed in Section 3.11.1 of the Company
  Disclosure Schedule, neither the Company nor any of its Subsidiaries has
  received any written notice from any person or Governmental Entity that
  alleges that the Company or any of its Subsidiaries is not in material
  compliance with applicable Environmental Laws, except where the failure to
  be or to have so been in material compliance, in the aggregate, would not
  have a Company Material Adverse Effect.
 
    3.11.2 Except as disclosed in Section 3.11.2 of the Company Disclosure
  Schedule or as disclosed in the Company SEC Documents, the Company and each
  of its Subsidiaries have obtained or have applied for all material
  environmental, health and safety permits and authorizations (collectively,
  "Environmental Permits") necessary for the construction of their facilities
  and the conduct of their operations, and all such Environmental Permits are
  in good standing or, where applicable, a renewal application has been
  timely filed and is pending agency approval, and the Company and its
  Subsidiaries are in material compliance with all terms and conditions of
  all such Environmental Permits, except where the failure to obtain such
  Environmental Permits, to make such application, to be in such compliance
  or to make such expenditures, in the aggregate, would not have a Company
  Material Adverse Effect. The Company and each of its Subsidiaries have
  taken, or prior to Closing will take, all necessary actions to ensure the
  transferability of all Environmental Permits that are required with respect
  to their respective businesses, operations and properties.
 
    3.11.3 Except as disclosed in Section 3.11.3 of the Company Disclosure
  Schedule or as disclosed in the Company SEC Documents, to the best
  knowledge of the Company, no Environmental Claim (as defined in Section
  3.11.7) is pending or, to the best knowledge of the Company, threatened:
  (i) against the Company or any of its Subsidiaries; (ii) against any person
  or entity whose liability for any Environmental Claim the Company or any of
  its Subsidiaries has or may have retained or assumed either contractually
  or by operation of law; or (iii) against any real or personal property or
  operations that the Company or any of its Subsidiaries owns, leases or
  manages, in whole or in part; that is reasonably likely in the aggregate to
  have a Company Material Adverse Effect and the Company has no knowledge of
  any facts likely to give rise to such Environmental Claim.
 
    3.11.4 Except as disclosed in Section 3.11.4 of the Company Disclosure
  Schedule or as disclosed in the Company SEC Documents, to the best
  knowledge of the Company, there has been no Release (as defined in Section
  3.11.7) of Hazardous Materials (as defined in Section 3.11.7) that would be
  reasonably likely to (i) form the basis of any Environmental Claim against
  the Company or any of its Subsidiaries, or against any person or entity
  whose liability for any Environmental Claim the Company or any of its
  Subsidiaries has or may have retained or assumed either contractually or by
  operation of law, or (ii) cause damage to or diminution in value of real
  property or operations that the Company or any of its Subsidiaries owns,
  leases, or manages, in whole or in part, except for Releases of Hazardous
  Materials the liability for which would not in the aggregate have a Company
  Material Adverse Effect.
 
    3.11.5 Except as disclosed in Section 3.11.5 of the Company Disclosure
  Schedule, or as disclosed in the Company SEC Documents, to the best
  knowledge of the Company, with respect to any predecessor of the Company or
  any of its Subsidiaries, there is no Environmental Claim pending or
  threatened, or Release of Hazardous Materials, that would be reasonably
  likely to form the basis of any Environmental Claims that are reasonably
  likely to have, in the aggregate, a Company Material Adverse Effect.
 
    3.11.6 To the best knowledge of the Company, the Company has disclosed to
  Nipsco all facts and circumstances that are likely to form the basis of an
  Environmental Claim or to require expenditures by the Company or any of its
  Subsidiaries in order to comply with current or future applicable
  Environmental Laws, including but not limited to facts and circumstances
  arising from: (i) the cost of pollution-control equipment currently
  required or known to be required in the future; (ii) current investigatory,
  removal, remediation or response costs or investigatory, removal,
  remediation or response costs known to be required in the future, in each
  case, both on-site and off-site; and/or (iii) any other environmental
  matters affecting the Company or any of its Subsidiaries; and that are
  reasonably likely to have, in the aggregate, a Company Material Adverse
  Effect.
 
                                     A-16

<PAGE>
 
    3.11.7 As used in this Agreement:
 
      (a) "Environmental Claim" means any and all administrative,
    regulatory or judicial actions, suits, demands, demand letters,
    directives, claims, liens, investigations, proceedings or notices of
    non- compliance or violation by any person or entity (including without
    limitation any Governmental Entity) alleging potential liability
    (including without limitation potential liability for enforcement
    costs, investigatory costs, cleanup costs, response costs, removal
    costs, remedial costs, natural resources damages, property damages,
    personal injuries, fines or penalties) arising out of, based on or
    resulting from (i) the presence, or Release or threatened Release, of
    any Hazardous Materials at any location, whether or not owned,
    operated, leased or managed by the Company or any of its Subsidiaries
    or joint ventures, (ii) circumstances forming the basis of any
    violation, or alleged violation, of any Environmental Laws or (iii) any
    and all claims by any third party seeking damages, contribution,
    indemnification, cost recovery, compensation or injunctive relief
    resulting from the presence or Release or threatened Release of any
    Hazardous Materials.
 
      (b) "Environmental Laws" means all federal, state and local laws,
    rules and regulations, and any binding judicial or administrative
    interpretation thereof or requirement thereunder relating to pollution
    or protection of human health or the environment (including without
    limitation ambient air, surface water, groundwater, land surface or
    subsurface strata), including without limitation laws and regulations
    relating to Releases or threatened Releases of Hazardous Materials or
    otherwise relating to the manufacture, processing, distribution, use,
    treatment, storage, disposal, transport or handling of Hazardous
    Materials.
 
      (c) "Hazardous Materials" means (i) any petroleum or petroleum
    products or petroleum wastes (including crude oil or any fraction
    thereof), nuclear fuel or waste or other radioactive materials, friable
    asbestos or friable asbestos-containing material, urea formaldehyde
    foam insulation, and transformers or other equipment that contain
    dielectric fluid containing polychlorinated biphenyls, (ii) any
    chemicals, materials or substances that are now defined as or included
    in the definition of "hazardous substances," "hazardous wastes,"
    "hazardous materials," "extremely hazardous wastes," "restricted
    hazardous wastes," "toxic substances," "toxic pollutants," or words of
    similar import, under any Environmental Law and (iii) any other
    chemical, material, substance or waste, exposure to which is now
    prohibited, limited or regulated under any Environmental Law in a
    jurisdiction in which the Company or any of its Subsidiaries or joint
    ventures operates.
 
      (d) "Release" means any release, spill, emission, leaking, injection,
    deposit, disposal, discharge, dispersal, leaching or migration into the
    atmosphere, soil, surface water, groundwater or property (indoors or
    outdoors).
 
  3.12 Litigation. Except as set forth in the Filed Company SEC Documents or
Section 3.12 of the Company Disclosure Schedule, there is no suit, claim,
action, proceeding or investigation pending or, to the knowledge of the
Company, threatened against or affecting the Company or any of its
Subsidiaries, and the Company has no knowledge of any facts likely to give
rise to any such litigation, that, individually or in the aggregate, could
reasonably be expected to have a Company Material Adverse Effect or to
materially and adversely affect the Company's ability to consummate the
transactions contemplated hereby. Neither the Company nor any of its
Subsidiaries is subject to any outstanding order, writ, injunction or decree
that, individually or in the aggregate, could reasonably be expected to have a
Company Material Adverse Effect. Except as set forth in the Filed Company SEC
Documents or Section 3.12 of the Company Disclosure Schedule, none of the
Company's Subsidiaries whose rates or services are subject to regulation by a
Governmental Entity (i) has rates that have been or are being collected
subject to refund, pending final resolution of any proceeding pending before a
Governmental Entity or on appeal to the courts or (ii) is a party to any
proceeding before the Governmental Entity or on appeal from orders of the
Governmental Entity.
 
  3.13 Labor Relations. Except as set forth in Section 3.13 of the Company
Disclosure Schedule:
 
    3.13.1 Neither the Company nor any of its Subsidiaries is a party to any
  collective bargaining agreement or other current labor agreement with any
  labor union or organization, and there is no current
 
                                     A-17

<PAGE>
 
  union representation question involving employees of the Company or any of
  its Subsidiaries, nor does the Company or any of its Subsidiaries know of
  any activity or proceeding of any labor organization (or representative
  thereof) or employee group (or representative thereof) to organize any such
  employees.
 
    3.13.2 There is no unfair labor practice charge or grievance arising out
  of a collective bargaining agreement or other grievance procedure against
  the Company or any of its Subsidiaries pending or, to the knowledge of the
  Company or any of its Subsidiaries, threatened that could reasonably be
  expected to have a Company Material Adverse Effect.
 
    3.13.3 There is no complaint, lawsuit or proceeding in any forum by or on
  behalf of any present or former employee, any applicant for employment or
  any classes of the foregoing alleging breach of any express or implied
  contract of employment, any law or regulation governing employment or the
  termination thereof or other discriminatory, wrongful or tortious conduct
  in connection with the employment relationship against the Company or any
  of its Subsidiaries pending or, to the knowledge of the Company or any of
  its Subsidiaries, threatened that could reasonably be expected to have a
  Company Material Adverse Effect.
 
    3.13.4 There is no strike, dispute, slowdown, work stoppage or lockout
  pending or, to the knowledge of the Company or any of its Subsidiaries,
  threatened against or involving the Company or any of its Subsidiaries that
  could reasonably be expected to have a Company Material Adverse Effect.
 
    3.13.5 The Company and each of its Subsidiaries is in compliance with all
  applicable laws respecting employment and employment practices, terms and
  conditions of employment, wages, hours of work and occupational safety and
  health, except for noncompliance that could not, individually or in the
  aggregate, reasonably be expected to have a Company Material Adverse
  Effect.
 
    3.13.6 There is no proceeding, claim, suit, action or governmental
  investigation pending or, to the knowledge of the Company or any of its
  Subsidiaries, threatened in respect to which any current or former
  director, officer, employee or agent of the Company or any of its
  Subsidiaries is or may be entitled to claim indemnification from the
  Company or any of its Subsidiaries pursuant to their respective articles of
  organization or articles or certificates of incorporation or by-laws, as
  provided in any indemnification agreement to which the Company or any of
  its Subsidiaries is a party or pursuant to applicable law that could
  reasonably be expected to have a Company Material Adverse Effect.
 
  3.14 Intellectual Property. The Company and its Subsidiaries possess or have
adequate rights to use all material trademarks, trade names, patents, service
marks, brand marks, brand names, computer programs, databases, industrial
designs and copyrights necessary for the operation of their business
(collectively, the "Company Intellectual Property"), except where the failure
to possess or have adequate rights to use such properties would not have a
Company Material Adverse Effect. Except as set forth in Section 3.14 of the
Company Disclosure Schedule, all of the Company Intellectual Property is owned
by the Company or one of its Subsidiaries, free and clear of any and all
Encumbrances, except for those Encumbrances that would not, individually or in
the aggregate, have a Company Material Adverse Effect, and neither the Company
nor any of its Subsidiaries has forfeited or otherwise relinquished any
Company Intellectual Property which forfeiture would have a Company Material
Adverse Effect. To the knowledge of the Company, the use of the Company
Intellectual Property by the Company or its Subsidiaries does not, in any
material respect, conflict with, infringe upon, violate or interfere with or
constitute an appropriation of any right, title, interest or goodwill
(including, without limitation, any intellectual property right, trademark,
trade name, patent, service mark, brand mark, brand name, computer program,
database, industrial design, copyright or any pending application therefor) of
any other person, and neither the Company nor any of its Subsidiaries has
received notice of any claim or otherwise knows that any of the Company
Intellectual Property is invalid, conflicts with the asserted rights of any
other person, has not been used or enforced or has failed to be used or
enforced in a manner that would result in the abandonment, cancellation or
unenforceability of any of the Company Intellectual Property, except for such
conflicts, infringements, violations, interferences, claims, invalidity,
abandonments, cancellations or unenforceability that would not, individually
or in the aggregate, have a Company Material Adverse Effect.
 
                                     A-18

<PAGE>
 
  3.15 No Default. Neither the Company nor any of its Subsidiaries is in
default or violation (and no event has occurred that, with notice or the lapse
of time or both, would constitute a default or violation) of any term,
condition or provision of (i) its articles of organization or articles or
certificate of incorporation or by-laws, (ii) any note, bond, mortgage,
indenture, license, agreement or other instrument or obligation to which it is
now a party or by which it or any of its properties or assets may be bound
(except for the requirement under certain of such instruments to file
supplemental indentures as a result of the transactions contemplated hereby)
or (iii) any order, writ, injunction, decree, statute, rule or regulation
applicable to it, except in the case of (ii) and (iii) for defaults or
violations that in the aggregate would not have a Company Material Adverse
Effect. The Company and each of its Subsidiaries have fulfilled, and have
taken all action reasonably necessary to date to enable them to fulfill when
due, all of their material obligations under all contracts, commitments and
arrangements and, to the knowledge of the Company, no breach or default by any
other party under such contracts, commitments or arrangements has occurred or
is threatened that will or could impair the ability of the Company or any of
its Subsidiaries to enforce any of its rights thereunder in any material
respect.
 
  3.16 Regulation as a Utility. The Company is regulated as a gas utility in
the Commonwealth of Massachusetts and in no other state; Northern is regulated
as a gas utility in the states of New Hampshire and Maine. Except as disclosed
in Section 3.16 of the Company Disclosure Schedule, neither the Company nor
any "subsidiary company" or "affiliate" (as such terms are defined in the 1935
Act) of the Company is subject to regulation as a public utility or public
service company (or similar designation) by any other state in the United
States, by the United States or any agency or instrumentality of the United
States or by any foreign country. The Company is a holding company exempt
under Section 3(a)(2) pursuant to Rule 2 from all provisions of the 1935 Act
except Section 9(a)(2).
 
  3.17 Insurance. Except as disclosed in Section 3.17 of the Company
Disclosure Schedule, each of the Company and each of its Subsidiaries is, and
has been continuously since January 1, 1991, insured with financially
responsible insurers in such amounts and against such risks and losses as are
customary for companies engaged in the respective businesses conducted by the
Company and its Subsidiaries during such time period. Except as disclosed in
Section 3.17 of the Company Disclosure Schedule, neither the Company nor any
of its Subsidiaries has received any notice of cancellation or termination
with respect to any insurance policy. All insurance policies of the Company
and its Subsidiaries are valid and enforceable policies.
 
  3.18 Voting Requirements. The affirmative vote of the holders of two-thirds
of the outstanding Company Shares, are the only votes of the holders of any
class or series of the Company's capital stock necessary to approve this
Agreement and the transactions contemplated by this Agreement (the "Company
Requisite Vote").
 
  3.19 Brokers. Except as relates to the services provided by SG Barr Devlin,
formerly Barr Devlin & Co. Incorporated ("Barr Devlin") as financial advisors
to the Company, all negotiations relative to this Agreement and the
transactions contemplated hereby have been carried out by the Company directly
with Nipsco, without the intervention of any person on behalf of the Company
in such manner as to give rise to any valid claim by any person against
Nipsco, the Company or any of their respective Subsidiaries for a finder's
fee, brokerage commission or similar payment.
 
  3.20 Opinion of Financial Advisor. The Company has received the opinion of
Barr Devlin, dated the date hereof, to the effect that, as of the date hereof,
the consideration to be received by holders of Company Shares pursuant to the
Merger is fair to such holders from a financial point of view.
 
  3.21 Change in Business Relationships. The Company has no knowledge of any
event or circumstance that indicates that, whether on account of the
transactions contemplated by this Agreement or otherwise, any customer, agent,
representative or supplier of the Company or of any of its Subsidiaries
intends to discontinue, diminish or change its relationship with the Company
or any of its Subsidiaries in any way that would be reasonably likely to have
a Company Material Adverse Effect.
 
                                     A-19

<PAGE>
 
  3.22 Material Contracts. Section 3.22 of the Disclosure Schedule lists each
oral and written contract, commitment or arrangement of which the Company has
knowledge that is of a material nature (or that assumes materiality because of
its continuing nature) and under which the Company or any of its Subsidiaries
is obligated on the date hereof, including the following:
 
    3.22.1 All consulting arrangements and contracts for professional,
  advisory and other services, including contracts under which the Company or
  any of its Subsidiaries performs services for others;
 
    3.22.2 All leases of real or personal property, other than leases of
  personal property whereunder total future rentals are, in each instance,
  less than $1,000,000;
 
    3.22.3 All contracts, commitments and agreements for the acquisition,
  development or disposition of real or personal property, other than
  conditional sales contracts and security agreements whereunder total future
  payments are, in each instance, less than $1,000,000;
 
    3.22.4 All contracts relating to the source or supply of gas and other
  raw materials essential to the conduct of the business of the Company or
  any of its Subsidiaries, including any financial derivatives master
  agreements of transactions, confirmations, or futures account opening
  agreements and/or brokerage statements evidencing financial hedging or
  other trading activities;
 
    3.22.5 All contracts relating to the employment, engagements,
  compensation or termination of directors, officers, employees or agents of
  the Company or any of its Subsidiaries and all pension, retirement, profit
  sharing, stock option, stock purchase, stock appreciation, insurance or
  similar plans or arrangements for the benefit of any employees, officers or
  directors of the Company or any of its Subsidiaries, including all Company
  Benefit Plans (as defined in Section 3.8.1);
 
    3.22.6 All loans, loan commitments, letters of credit or other financial
  accommodations or arrangements or evidences of indebtedness, including
  modifications or amendments thereof, extended to or for the benefit of the
  Company or any of its Subsidiaries;
 
    3.22.7 All union and other labor contracts; and
 
    3.22.8 All other material contracts made other than in the usual or
  ordinary course of business of the Company or any of its Subsidiaries to
  and which the Company or any of its Subsidiaries is a party or under which
  the Company or any of its Subsidiaries is obligated.
 
  3.23 Commodity Derivatives and Credit Exposure Matters. Neither the Company
nor any of its Subsidiaries has quantified on a mark-to-market basis and
calculated with respect to physical and financial position exposure, (a)
natural gas forward price exposure exceeding $5,000, (b) on-system pipeline
transportation (basis) exposure exceeding $5,000, (c) off-system pipeline
transportation (basis) exposure exceeding $5,000 or (d) credit exposure (which
is unsecured and not backed by letters of credit or enforceable guarantees
from A-rated credit providers) to any one counterparty which exceeds
$1,000,000.
 
  3.24 No Omissions. None of the information included in the Company
Disclosure Schedule or in the Company SEC Documents (including, without
limitation, the consolidated financial statements included therein) was, as of
the date such information was included in such Schedule or such Documents,
false or misleading in any material respect or omitted to state a fact therein
necessary to make such information not misleading in any material respect.
 
                                  ARTICLE IV
 
                   REPRESENTATIONS AND WARRANTIES OF NIPSCO
 
  Nipsco hereby represents and warrants to the Company as follows:
 
  4.1 Organization, Standing and Corporate Power. Nipsco is a corporation duly
organized and validly existing under the laws of the State of Indiana. Nipsco
has the requisite corporate power and authority to carry
 
                                     A-20

<PAGE>
 
on its business as now being conducted, and Nipsco is duly qualified or
licensed to do business and is in good standing in each jurisdiction in which
the nature of its business or the ownership or leasing of its properties makes
such qualification or licensing necessary except where the failure to be so
qualified or licensed would not individually or in the aggregate have a Nipsco
Material Adverse Effect. As used in this Agreement, the term "Nipsco Material
Adverse Effect" means a material adverse effect on the business, assets,
liabilities, results of operations, financial condition or prospects of Nipsco
and its Subsidiaries taken as a whole. Nipsco has delivered to the Company
complete and correct copies of its articles of incorporation and by-laws, as
amended to the date of this Agreement.
 
  4.2 Nipsco Capital Structure.
 
    4.2.1 As of the date hereof, the authorized capital stock of Nipsco
  consists of 200,000,000 Nipsco Common Shares and 20,000,000 shares of
  preferred stock, without par value ("Nipsco Preferred Shares"). At the
  close of business on December 12, 1997, (i) 62,196,673 Nipsco Common Shares
  were issued and outstanding, and (ii) 11,695,436 Nipsco Common Shares were
  held as treasury shares. Nipsco has no Nipsco Common Shares or Nipsco
  Preferred Shares reserved for issuance, except that, as of December 12,
  1997, there were 1,094,900 Nipsco Common Shares reserved for issuance
  pursuant to Nipsco's Long-Term Incentive Plans and its Nonemployer Director
  Stock Incentive Plan (the "Nipsco Stock Plans") and 2,000,000 Series A
  Junior Participating Preferred Shares reserved for issuance pursuant to
  Nipsco's Share Purchase Rights Plan. All outstanding shares of capital
  stock of Nipsco are, and all Nipsco Common Shares that may be issued in
  connection with the Merger will be when issued, duly authorized, validly
  issued, fully paid and nonassessable and not subject to preemptive rights.
  No bonds, debentures, notes or other indebtedness of Nipsco conferring the
  right to vote (or convertible into, or exchangeable for, securities
  conferring the right to vote) on any matters on which the shareholders of
  Nipsco may vote are issued or outstanding. Except as set forth above or in
  Section 4.2.1 of the disclosure schedule dated as of the date hereof of
  Nipsco (the "Nipsco Disclosure Schedule"), Nipsco does not have any
  outstanding option, warrant, subscription or other right, agreement or
  commitment that either obligates Nipsco to issue, sell or transfer,
  repurchase, redeem or otherwise acquire or vote any shares of capital stock
  of Nipsco or its Subsidiaries or that restricts the transfer of Nipsco
  Common Shares.
 
    4.2.2 Prior to the Effective Time, the authorized capital stock of
  Acquisition will consist of 1,000 common shares, without par value, all of
  which will be issued and outstanding and owned by Nipsco. All such
  outstanding common shares will be duly authorized, validly issued, fully
  paid and nonassessable and not subject to preemptive rights.
 
  4.3 Subsidiaries. Section 4.3 of the Nipsco Disclosure Schedule sets forth
the name of each of Nipsco's Subsidiaries and the jurisdiction of its
organization. Except as set forth in Schedule 4.3, Nipsco is, directly or
indirectly, the record and beneficial owner of all of the outstanding shares
of capital stock or other ownership units of each of its Subsidiaries, and no
Nipsco Subsidiary has any outstanding option, warrant, subscription or other
right, agreement or commitment that obligates either Nipsco or any of its
Subsidiaries to issue, sell or transfer, repurchase, redeem or otherwise
acquire or vote any shares of the capital stock of Nipsco or any of its
Subsidiaries, or that restricts the transfer of Nipsco Common Shares. All the
outstanding shares of capital stock of each Nipsco Subsidiary have been
validly issued and are fully paid and nonassessable and are owned by Nipsco or
a wholly owned Subsidiary, free and clear of all Encumbrances, restraints on
alienation, or any other restrictions with respect to the transferability or
assignability thereof (other than restrictions imposed by federal or state
securities laws). A "Subsidiary" of Nipsco means any corporation or other
entity (including joint ventures, partnerships and other business
associations) in which Nipsco directly or indirectly owns outstanding capital
stock or other voting securities having the power to elect a majority of the
directors or similar members of the governing body of such corporation or
other entity, or otherwise to direct to the management and policies of such
corporation or other entity.
 
  4.4 Authority; Noncontravention. Nipsco has, and as of the Effective Time
Acquisition will have, all requisite corporate power and authority to enter
into this Agreement and to carry out its obligations hereunder. The execution
and delivery of this Agreement by Nipsco and the consummation by it of the
transactions
 
                                     A-21

<PAGE>
 
contemplated hereby has been duly authorized by all necessary corporate action
on the part of Nipsco. This Agreement has been duly executed and delivered by
Nipsco and, assuming this Agreement has been duly executed and delivered by
the Company, constitutes a valid and binding obligation of Nipsco, enforceable
against it in accordance with its terms, except that the enforcement thereof
may be limited by bankruptcy, insolvency, reorganization, moratorium or
similar laws now or hereafter in effect relating to creditors' rights
generally and by general principles of equity (regardless of whether
enforceability is considered in a proceeding at law or in equity). Except as
set forth in Section 4.4 of the Nipsco Disclosure Schedule, the execution and
delivery of this Agreement do not, and the consummation of the transactions
contemplated by this Agreement and compliance with the provisions hereof will
not, (i) conflict with any of the provisions of the articles of incorporation
or by-laws of Nipsco or Acquisition or conflict with the joint venture
agreement or comparable document of any joint venture, partnership or other
business association or entity to which Nipsco or Acquisition is a party (ii)
subject to the governmental filings and other matters referred to in the
following sentence, conflict with, result in a breach of or default (with or
without notice or lapse of time, or both) under, or give rise to a right of
termination, cancellation or acceleration of any obligation or loss of a
material benefit under, or require the consent (the "Nipsco Required
Consents") of any person under, any indenture, or other agreement, permit,
concession, franchise, license or similar instrument or undertaking to which
Nipsco or any of its Subsidiaries is a party or by which Nipsco or any of its
Subsidiaries or any of their assets is bound or affected, or (iii) subject to
the governmental filings and other matters referred to in the following
sentence, contravene any law, rule or regulation of any state or of the United
States or any political subdivision thereof or therein, or any order, writ,
judgment, injunction, decree, determination or award currently in effect,
subject, in the case of clauses (ii) and (iii) above, to those conflicts,
breaches, defaults and similar matters that, individually or in the aggregate,
would not have a Nipsco Material Adverse Effect nor materially and adversely
affect Nipsco's ability to consummate the transactions contemplated hereby. No
consent, approval or authorization of, or declaration or filing with, or
notice to, any Governmental Entity that has not been received or made is
required by or with respect to Nipsco in connection with the execution and
delivery of this Agreement by Nipsco or the consummation by it of any of the
transactions contemplated hereby, except for (a) the filing of pre-merger
notification and report forms under the HSR Act with respect to the Merger;
(b) the filing with the SEC of a registration statement on Form S-4 by Nipsco
in connection with the issuance of Nipsco Common Shares in the Merger (the
"Registration Statement") and such reports under the Exchange Act as may be
required in connection with this Agreement and the transactions contemplated
by this Agreement; (c) the filing of articles of merger with the Massachusetts
Secretary and appropriate documents with the relevant authorities of the other
states in which the Company is qualified to do business; (d) filing with the
SEC for authorization of the Merger under Section 9(a)(2) of the 1935 Act; and
(e) such other consents, approvals, authorizations, filings or notices as are
set forth in Section 4.4 of the Nipsco Disclosure Schedule or as, in the
aggregate could not reasonably be expected to have a Nipsco Material Adverse
Effect (collectively, the "Nipsco Required Statutory Approvals").
 
  4.5 Nipsco SEC Documents and Financial Statements.
 
    4.5.1 Nipsco has timely filed all required reports, schedules, forms,
  statements and other documents with the SEC since January 1, 1992 (the
  "Nipsco SEC Documents"). As of their respective dates (or, with respect to
  any amendment to the Nipsco SEC Documents, as of the date of the filing of
  such amendment), the Nipsco SEC Documents complied with the requirements of
  the Securities Act or the Exchange Act, as the case may be, and the rules
  and regulations of the SEC promulgated thereunder applicable to such Nipsco
  SEC Documents, and none of the Nipsco SEC Documents as of such dates
  contained any untrue statement of a material fact or omitted to state a
  material fact required to be stated therein or necessary in order to make
  the statements therein, in light of the circumstances under which they were
  made, not misleading.
 
    4.5.2 The consolidated financial statements of Nipsco included in the
  Nipsco SEC Documents comply as to form in all material respects with
  applicable accounting requirements and the published rules and regulations
  of the SEC with respect thereto, have been prepared in accordance with GAAP
  (except as may be indicated in the notes thereto or, in the case of
  unaudited interim financial statements, as permitted by Rule 10-01 of
  Regulation S-X) and fairly present, in all material respects, the
  consolidated financial position of Nipsco and its consolidated Subsidiaries
  as of the dates thereof and the consolidated results of their
 
                                     A-22

<PAGE>
 
  operations, changes in shareholders' equity and consolidated cash flows for
  the periods then ended (subject, in the case of unaudited financial
  statements, to normal recurring adjustments, none of which is material).
 
    4.5.3 Except as disclosed in the Nipsco SEC Documents filed and publicly
  available prior to December 16, 1997 (the "Filed Nipsco SEC Documents") or
  in the Nipsco Disclosure Schedule, neither Nipsco nor any of its
  Subsidiaries has any absolute, accrued, contingent or other liabilities or
  obligations due or to become due, and there are no claims or causes of
  action formerly maintained by Nipsco or any of its Subsidiaries or a Nipsco
  ERISA Affiliate (as defined in Section 4.8.1) on or after January 1, 1992)
  that have been or, to the knowledge of the officers of Nipsco and its
  Subsidiaries and divisions, the members of Nipsco's legal department and
  the director(s), manager(s) or supervisor(s) of Nipsco's environmental
  compliance and affairs, may be asserted against Nipsco or any of its
  Subsidiaries, except (i) as and to the extent reflected or reserved against
  on the balance sheet included in Nipsco's Annual Report on Form 10-K for
  the year ended December 31, 1996 (the "Nipsco Base Balance Sheet"), or
  included in the notes to the Nipsco Base Balance Sheet, (ii) for normal and
  recurring liabilities incurred since December 31, 1996, in the ordinary
  course of business consistent with past practice, and (iii) for such other
  liabilities and obligations that are not in the aggregate reasonably likely
  to have a Nipsco Material Adverse Effect.
 
  4.6 Absence of Certain Changes or Events.
 
    (a) Except as set forth in the Nipsco SEC Documents filed prior to the
  date hereof or in Section 4.6 of the Nipsco Disclosure Schedule, from
  December 31, 1996 there has not been, and no fact or condition exists that
  would reasonably be expected to have, a Nipsco Material Adverse Effect.
 
    (b) Neither Nipsco nor any of its Subsidiaries has any liabilities or
  obligations (whether absolute, accrued, contingent or otherwise) of a
  nature required by GAAP to be reflected in a consolidated corporate balance
  sheet, except liabilities, obligations or contingencies that are accrued or
  reserved against in the consolidated financial statements of Nipsco or
  reflected in the notes thereto for the year ended December 31, 1996, or
  that were incurred after December 31, 1996 in the ordinary course of
  business and would not reasonably likely have a Nipsco Material Adverse
  Effect.
 
  4.7 Employee Matters; ERISA. Each employee benefit plan, program, policy,
agreement or arrangement maintained by Nipsco or its Subsidiaries is and has
been operated in compliance with its terms and all applicable laws, rules, and
regulations governing such plans, including without limitation ERISA and the
Code, except for violations that could not reasonably be expected to have a
Nipsco Material Adverse Effect.
 
  4.8 Taxes.
 
    4.8.1 Filing of Timely Tax Returns. Nipsco and each of its Subsidiaries
  have filed all Tax Returns required to be filed by each of them under
  applicable law. All Tax Returns were in all material respects (and, as to
  Tax Returns not filed as of the date hereof, will be) true, complete and
  correct and filed on a timely basis except for where the failure to do so
  would not have a Nipsco Material Adverse Effect.
 
    4.8.2 Payment of Taxes. Neither Nipsco nor any of its Subsidiaries have
  any liability for unpaid Taxes that, in the aggregate, would be reasonably
  likely to have a Nipsco Material Adverse Effect.
 
  4.9 Environmental Matters.
 
    4.9.1 Environmental Matters. Except as would not, in the aggregate, be
  reasonably expected to result in a Nipsco Material Adverse Effect, but
  excluding matters disclosed in Section 4.9.1 of the Nipsco Disclosure
  Schedule, (i) Nipsco and its Subsidiaries are and have been in material
  compliance with all applicable Environmental Laws and the terms and
  conditions of all applicable Environmental Permits, and neither Nipsco nor
  any of its Subsidiaries has received any written notice from any person or
  Governmental Entity that alleges that Nipsco or any of its Subsidiaries is
  not in material compliance with applicable Environmental Laws or the terms
  and conditions of all such Environmental Permits, (ii) to the best
  knowledge of Nipsco, there are no Environmental Claims pending or
  threatened (a) against Nipsco or any of its Subsidiaries, (b) against any
  person or entity whose liability for any Environmental Claim Nipsco or
 
                                     A-23

<PAGE>
 
  any of its Subsidiaries has or may have retained or assumed either
  contractually or by operation of law or (c) against any real or personal
  property or operations that Nipsco or any of its Subsidiaries owns, leases
  or manages, in whole or in part, and (iii) to the best knowledge of Nipsco,
  there has been no Release of Hazardous Materials that would be reasonably
  likely to (a) form the basis of any Environmental Claim against Nipsco or
  any of its Subsidiaries or against any person or entity whose liability for
  any Environmental Claim Nipsco or any of its Subsidiaries has or may have
  retained or assumed either contractually or by operation of law or (b)
  cause damage or diminution of value to any of the operations or real
  properties owned, leased or managed, in whole or in part, by Nipsco or any
  of its Subsidiaries.
 
    4.9.2 To the best knowledge of Nipsco, there are no facts or
  circumstances that are likely to form in the basis of an Environmental
  Claim or to require expenditures by Nipsco or any of its Subsidiaries in
  order to comply with currently applicable Environmental Laws, including but
  not limited to facts and circumstances arising from: (i) the cost of
  pollution-control equipment currently required or known to be required in
  the future; (ii) current investigatory, removal, remediation or response
  costs or investigatory, removal, remediation or response costs known to be
  required in the future, in each case, both on-site and off-site; and/or
  (iii) any other environmental matters affecting Nipsco or any of its
  Subsidiaries; and that are reasonably likely to have, in the aggregate, but
  excluding matters disclosed in Section 4.9.2 of the Nipsco Disclosure
  Schedule, a Nipsco Material Adverse Effect.
 
  4.10 Brokers. All negotiations relative to this Agreement and the
transactions contemplated hereby have been carried out by Nipsco directly with
the Company, without the intervention of any person on behalf of Nipsco in
such manner as to give rise to any valid claim by any person against the
Company or any of its Subsidiaries for a finder's fee, brokerage commission or
similar payment.
 
  4.11 No Omissions. None of the information included in the Nipsco Disclosure
Schedule or in the Nipsco SEC Documents (including, without limitation, the
consolidated financial statements included therein) was, as of the date such
information was included in such Schedule or Documents, false or misleading in
any material respect or omitted to state a fact therein necessary to make such
information not misleading in any material respect.
 
  4.12 Regulation as a Utility. Nipsco is a public utility holding company
within the meaning of the 1935 Act and is either exempt from, or is in
compliance with, all provisions thereof.
 
  4.13 Compliance. Nipsco and its Subsidiaries hold all permits, licenses,
variances, exemptions, orders, franchises, consents and approvals of all
Governmental Entities necessary for them to own, lease and operate their
properties and assets, and to lawfully conduct their respective businesses,
except where the failure to so hold would not have a Nipsco Material Adverse
Effect. Except as set forth in Section 4.13 of the Nipsco Disclosure Schedule
or as disclosed in the Nipsco SEC Documents filed as of the date hereof,
Nipsco and its Subsidiaries are not conducting their business in violation of,
nor have they received notice of an investigation with respect to any
violation of, any law, statute, order, rule, regulation, ordinance or judgment
of any Governmental Authority, except for violations that do not have, and
would not be reasonably likely to have, a Nipsco Material Adverse Effect.
 
                                   ARTICLE V
 
                             ADDITIONAL AGREEMENTS
 
  5.1 Preparation of Registration Statement and Proxy Statement.
 
    5.1.1 Registration Statement; Proxy Statement. As soon as practicable
  following the date of this Agreement, the Company shall prepare and file
  with the SEC a preliminary proxy statement relating to the Company Special
  Meeting (as defined in Section 5.2) as such preliminary proxy statement may
  be amended from time to time (the "Proxy Statement"), and Nipsco shall
  prepare and file with the SEC the Registration Statement including a
  prospectus relating to the Nipsco Common Shares, as amended or supplemented
  from
 
                                     A-24

<PAGE>
 
  time to time (the "Prospectus"). Nipsco shall use its best efforts to have
  the Registration Statement declared effective under the Securities Act as
  promptly as practicable after such filing. The Company shall use its best
  efforts to cause the Proxy Statement to be mailed to the Company's
  shareholders as promptly as practicable after the Registration Statement is
  declared effective under the Securities Act. Nipsco shall also take any
  action (other than qualifying to do business in any jurisdiction in which
  it is not now so qualified) required to be taken under any applicable state
  securities laws in connection with the issuance of the Nipsco Common Shares
  in the Merger, and the Company shall furnish all information concerning the
  Company and the holders of the Company Common Shares as may be reasonably
  requested in connection with any such action. It shall be a condition to
  the requirement of the Company to mail the Proxy Statement to its
  shareholders that the Company shall have received an opinion from Barr
  Devlin, dated the date of the Proxy Statement, to the effect that, as of
  the date thereof, the consideration to be received by holders of Company
  Shares pursuant to the Merger is fair to such holders from a financial
  point of view.
 
    5.1.2 Company Information. The Company agrees that none of the
  information supplied or to be supplied by the Company specifically for
  inclusion or incorporation by reference in (i) the Registration Statement
  shall, at the time the Registration Statement is filed with the SEC, at any
  time it is amended or supplemented or at the time it becomes effective
  under the Securities Act, contain any untrue statement of a material fact
  or omit to state any material fact required to be stated therein or
  necessary to make the statement therein not misleading and (ii) the Proxy
  Statement shall, at the date it is first mailed to the Company's
  shareholders or at the time of the Company Special Meeting, contain any
  untrue statement of a material fact or omit to state any material fact
  required to be stated therein or necessary in order to make the statements
  therein, in light of the circumstances under which they are made, not
  misleading. The Proxy Statement shall comply as to form in all material
  respect with the requirements of the Exchange Act and the rules and
  regulations thereunder, except with respect to statements made or
  incorporated by reference therein based on information supplied by Nipsco
  specifically for inclusion or incorporation by reference in the Proxy
  Statement.
 
    5.1.3 Nipsco Information. Nipsco agrees that none of the information
  supplied or to be supplied by Nipsco specifically for inclusion or
  incorporation by reference in (i) the Registration Statement shall, at the
  time the Registration Statement is filed with the SEC, at any time it is
  amended or supplemented or at the time it becomes effective under the
  Securities Act, contain any untrue statement of a material fact or omit to
  state any material fact required to be stated therein or necessary to make
  the statements therein not misleading, and (ii) the Proxy Statement shall,
  at the date the Proxy Statement is first mailed to the Company's
  shareholders or at the time of the Company Special Meeting, contain any
  untrue statement of a material fact or omit to state any material fact
  required to be stated therein or necessary in order to make the statements
  therein, in light of the circumstances under which they are made, not
  misleading. The Registration Statement shall comply as to form in all
  material respects with the requirements of the Securities Act and the rules
  and regulations promulgated thereunder, except with respect to statements
  made or incorporated by reference in either the Registration Statement or
  the Proxy Statement based on information supplied by the Company
  specifically for inclusion or incorporation by reference therein.
 
  5.2 Meeting of the Company's Shareholders. The Company shall take all action
necessary in accordance with applicable federal and state law and the Charter
and By-laws to convene a meeting of its shareholders as promptly as
practicable and consistent with Section 5.1.1 (the "Company Special Meeting")
to consider and vote upon the approval of the Merger. Subject to Section 5.10,
the Company shall, through its board of directors (the "Company Board"),
recommend to its shareholders approval of the Merger. Without limiting the
generality of the foregoing, the Company agrees that, subject to its right to
terminate this Agreement pursuant to Section 8.12(v), its obligations pursuant
to the first sentence of Section 5.2 shall not be affected by (i) the
commencement, public proposal, public disclosure or communication to the
Company of any Acquisition Proposal (as defined in Section 5.9) or (ii) the
withdrawal or modification by the Company Board of its approval or
recommendation of this Agreement or the Merger. Subject to Sections 5.9 and
5.10, the Company shall use its best efforts to obtain the favorable vote of
its shareholders as soon as practicable after the date hereof. It shall be a
condition to the obligation of the Company to hold the Company Special Meeting
that the opinion of Barr Devlin referred to in Section 5.1.1 shall not have
been withdrawn.
 
                                     A-25

<PAGE>
 
  5.3 Affiliates and Certain Shareholders. Prior to the Closing Date, the
Company shall deliver to Nipsco a letter identifying all persons who it
believes to be, at the time the Merger is submitted for approval to the
shareholders of the Company, "affiliates" of the Company for purposes of Rule
145 under the Securities Act. The Company shall use its best efforts to cause
each such person to deliver to Nipsco on or prior to the Closing Date a
written agreement in connection with restrictions on affiliates under Rule
145, in substantially the form attached as Exhibit A to this Agreement. Nipsco
shall not be required to maintain the effectiveness of the Registration
Statement or any other registration statement under the Securities Act for the
purposes of resale of Nipsco Common Shares by such affiliates, and the
certificates representing Nipsco Common Shares received by such affiliates in
the Merger shall bear a customary legend regarding applicable Securities Act
restrictions and the provisions of this Section 5.3. The Company shall use its
best efforts to obtain from each of the beneficial owners (within the meaning
of Rule 13d-3 and Rule 13d-5 of the Exchange Act) of 5% or more of the Company
Common Shares such representation letters addressed to Nipsco, SH&W and LLG&M
as such law firms shall require in connection with the delivery of their Tax
Opinions pursuant to Sections 7.2.3 and 7.3.3, respectively.
 
  5.4 Best Efforts. Upon the terms and subject to the conditions and other
agreements set forth in this Agreement, each of the parties agrees to use its
best efforts to take, or cause to be taken, all actions, and to do, or cause
to be done, and to assist and cooperate with the other parties in doing, all
things necessary, proper or advisable to consummate and make effective, in the
most expeditious manner practicable, the Merger and the other transactions
contemplated by this Agreement.
 
  5.5 Letter of the Company's Accountants. Following receipt by KPMG Peat
Marwick LLP, the Company's independent auditors, of an appropriate request
from Nipsco pursuant to SAS No. 72, the Company shall use best efforts to
cause to be delivered to Nipsco a letter of KPMG Peat Marwick LLP, dated a
date within two business days before the effective date of the Registration
Statement, and addressed to Nipsco, in form and substance reasonably
satisfactory to Nipsco and customary in scope and substance for "cold comfort"
letters delivered by independent public accountants in connection with
registration statements similar to the Registration Statement.
 
  5.6 Letter of Nipsco's Accountants. Following receipt by Arthur Andersen
LLP, Nipsco's independent auditors, of an appropriate request from the Company
pursuant to SAS No. 72, Nipsco shall use best efforts to cause to be delivered
to the Company a letter of Arthur Andersen LLP, dated a date within two
business days before the effective date of the Registration Statement, and
addressed to the Company, in form and substance reasonably satisfactory to the
Company and customary in scope and substance for "cold comfort" letters
delivered by independent public accountants in connection with registration
statements similar to the Registration Statement.
 
  5.7 Access to Information; Confidentiality. Upon reasonable notice, (i) the
Company shall, and shall cause its Subsidiaries to, afford to the officers,
employees, accountants, counsel, financial advisors and other representatives
of Nipsco, reasonable access during normal business hours during the period
prior to the Effective Time to all its properties, books, contracts,
commitments, personnel and records and (ii) Nipsco shall, and shall cause its
Subsidiaries to, afford to the officers, employees, accountants, counsel,
financial advisors and other representatives of Brass, reasonable access to
senior executives of Nipsco for the purpose of discussing Nipsco's business
(with reasonable access to the documents related thereto) during the period
sixty (60) days prior to the Effective Time. Prior to the Effective Time, each
of the Company and Nipsco shall furnish promptly to the other party a copy of
each Company SEC Document or Nipsco SEC Document, as the case may be, filed by
it (including any separate Subsidiary) during such period, and all
correspondence or written communication with any securities rating agency or
any Governmental Entity or utility regulatory authorities (that relates to the
transactions contemplated hereby or, subject to the terms of any then existing
confidentiality requirements, that is otherwise material to the financial
condition or operations of the Company and its Subsidiaries taken as a whole,
or to Nipsco and its Subsidiaries taken as a whole, as the case may be).
During such period, each of the Company and Nipsco shall furnish to the other
party such other financial, operating and other data as may be reasonably
required by the other party in order to perform its investigation regarding
the representations and
 
                                     A-26

<PAGE>
 
warranties made by the other party pursuant to this Agreement. Each of Nipsco
and the Company agrees that it shall not, and that it shall cause its
respective representatives not to, use any information obtained pursuant to
this Section 5.7 for any purpose unrelated to the consummation of the
transactions contemplated by this Agreement. Except as required by law, each
of the Company and Nipsco shall hold, and shall cause its respective
directors, officers, partners, employees, accountants, counsel, financial
advisors and other representatives and affiliates to hold, any nonpublic
information obtained from the other party in confidence to the extent required
by, and in accordance with, the provisions of the letter agreement dated
October 27, 1997, as amended, between Nipsco and the Company (the
"Confidentiality Agreement").
 
  5.8 Public Announcements. Nipsco and the Company shall consult with each
other before issuing, and shall provide each other a reasonable opportunity to
review and comment upon, any press release or public statement with respect to
this Agreement or the transactions contemplated hereby, except to the extent
disclosure prior to such consultation, review and comment may be required by
applicable law, court process or obligations pursuant to any listing agreement
with any national securities exchange.
 
  5.9 Acquisition Proposals. The Company shall not, nor shall it authorize or
permit any officer, director or employee of, or any investment banker,
attorney or other advisor or representative of, the Company or any of its
Subsidiaries to, directly or indirectly, (i) solicit, initiate or encourage
the submission of any Acquisition Proposal (as defined below) or (ii)
participate in any discussions or negotiations regarding, or furnish to any
person any information with respect to, or take any other action to facilitate
any inquiries or the making of any proposal that constitutes, or may
reasonably be expected to lead to, any Acquisition Proposal; provided,
however, that nothing contained in this Section 5.9 shall prohibit the Company
Board from furnishing information to, or entering into discussions or
negotiations with, any person or entity that makes an unsolicited Acquisition
Proposal after the date hereof if, and only to the extent that, (a) the
Company Board, after consultation with and based upon the advice of outside
counsel, concludes in good faith that a failure to do so could reasonably be
expected to result in a breach of its fiduciary duties to the shareholders of
the Company under applicable law and (b) the Company (x) provides reasonable
notice to Nipsco to the effect that it is taking such action and (y) receives
from such person or entity an executed confidentiality agreement not less
favorable to the Company than the Confidentiality Agreement, except that such
confidentiality agreement shall not prohibit such person or entity from making
an unsolicited Acquisition Proposal to the Company Board. Notwithstanding
anything in this Agreement to the contrary, the Company shall promptly advise
Nipsco orally and in writing of the receipt by it (or by any of the other
entities or persons referred to above) after the date hereof of any
Acquisition Proposal, or any inquiry that could reasonably be expected to lead
to any Acquisition Proposal, the material terms and conditions of such
Acquisition Proposal or inquiry, and the identity of the person or entity
making any such Acquisition Proposal or inquiry, provided that the Company
shall have no obligation to disclose the identity of such person or entity if
such disclosure would violate the terms of any agreement outstanding on the
date hereof with such person or entity, or the Company Board, after
consultation with and based upon the advice of outside counsel, concludes in
good faith that such disclosure would violate its fiduciary duties or would be
otherwise inconsistent with applicable law. For purposes of this Agreement,
"Acquisition Proposal" means any bona fide proposal with respect to a merger,
consolidation, share exchange or similar transaction involving the Company or
any of its Subsidiaries, or any purchase of all or a substantial portion of
the assets or shares of the Company or any of its Subsidiaries, or any other
business combination (including without limitation the acquisition of an
equity interest therein) involving the Company or any of its Subsidiaries,
other than the transactions contemplated hereby.
 
  5.10 Fiduciary Duties. The Company Board shall not (i) withdraw or modify
its approval or recommendation of this Agreement or the Merger, (ii) approve
or recommend an Acquisition Proposal or (iii) enter into any agreement with
respect to any Acquisition Proposal, unless the Company receives an
Acquisition Proposal and the Company Board concludes in good faith, after
consultation with and based upon the advice of outside counsel, that a failure
to do so could reasonably be expected to result in a breach of its fiduciary
duties to the shareholders of the Company under applicable law, it is
necessary for the Company Board to withdraw or modify its approval or
recommendation of this Agreement or the Merger, approve or recommend such
Acquisition Proposal or enter into an agreement with respect to such
Acquisition Proposal. Nothing contained in
 
                                     A-27

<PAGE>
 
this Section 5.10 shall prohibit the Company from taking and disclosing to its
shareholders a position contemplated by Rule 14e-2(a) promulgated under the
Exchange Act or from making any disclosure to the Company's shareholders that,
in the good faith judgment of the Company Board based on advice of outside
counsel, is required under applicable law; provided that the Company does not
withdraw or modify its position with respect to the Merger or approve or
recommend an Acquisition Proposal, except under the circumstances described in
the immediately preceding sentence. In the event that the Company Board shall
act pursuant to this Section 5.10, Nipsco's remedies shall be limited to the
fees specified in Sections 8.2.4 and 8.2.5.
 
  5.11 Filings; Other Action.
 
    5.11.1 HSR Act. Nipsco and the Company shall file or cause to be filed
  with the Federal Trade Commission and the Department of Justice any
  notifications required to be filed by them under the HSR Act and the rules
  and regulations promulgated thereunder with respect to the transactions
  contemplated hereby. Such parties shall use all commercially reasonable
  efforts to make such filings promptly and to respond on a timely basis to
  any requests for additional information made by either of such agencies.
 
    5.11.2 Other Regulatory Approvals. Nipsco and the Company shall cooperate
  and use all reasonable efforts to promptly prepare and file all necessary
  documentation, to effect all necessary applications, notices, petitions,
  filings and other documents, and to use all commercially reasonable efforts
  to obtain (and shall cooperate with each other in obtaining) any consent,
  acquiescence, authorization, order or approval of, or any exemption or
  nonopposition by, any Governmental Entity required to be obtained or made
  by Nipsco, the Company or any of their Subsidiaries in connection with the
  Merger or the taking of any action contemplated thereby or by this
  Agreement.
 
    5.11.3 Other Approvals. Nipsco and the Company shall, and shall cause
  each of their respective Subsidiaries to, take all reasonable actions
  necessary to obtain (and shall cooperate with each other in obtaining) all
  Nipsco Required Consents and all Company Required Consents, as the case may
  be.
 
  5.12 Stock Exchange Listings. Nipsco shall use its best efforts to cause the
Nipsco Common Shares to be issued in the Merger to be approved for listing on
the NYSE, the Chicago Stock Exchange and the Pacific Stock Exchange, in each
case subject to official notice of issuance, prior to the Closing Date.
 
  5.13 Indemnification. From and after the Effective Time, the Surviving
Corporation shall indemnify and hold harmless each Eligible Person (as defined
in the Charter), determined as of the Effective Time, against any costs or
expenses (including reasonable attorneys' fees), judgments, fines, losses,
claims, damages or liabilities incurred in connection with any claim, action,
suit, proceeding or investigation, whether civil, criminal, administrative or
investigative, arising out of or pertaining to matters existing or occurring
at or prior to the Effective Time, whether asserted or claimed prior to, at or
after the Effective Time, to the fullest extent that the Company or any of its
Subsidiaries would have been permitted under applicable law and the articles
of organization or certificate or articles of incorporation of the Company or
such Subsidiary in effect on the date hereof to indemnify such person (and the
Surviving Corporation shall also advance expenses as incurred to the fullest
extent permitted under applicable law provided the person to whom expenses are
advanced provides an undertaking to repay such advances if it is ultimately
determined that such person is not entitled to indemnification). Nipsco shall
cause to be maintained, for a period of not less than six years from the
Effective Time, the Company's directors' and officers' insurance and
indemnification policy in effect as of the date hereof, to the extent that it
provides coverage for events occurring prior to the Effective Time (the "D&O
Insurance") for all persons who are directors or officers of the Company who
are covered persons under the Company's D&O Insurance policies in effect on
the date hereof, so long as the annual premium therefor would not be in excess
of 200% of the last annual premium paid prior to the date hereof (the "Maximum
Premium"). If the existing D&O Insurance expires, is terminated or canceled
during such six-year period, Nipsco shall use all reasonable efforts to cause
to be obtained as much D&O Insurance as can be obtained for the remainder of
such period for an annualized premium not in excess of the Maximum Premium, on
terms and conditions no less advantageous to the covered persons than the
existing D&O Insurance. The provisions of this Section 5.13 are intended to be
for the benefit of, and shall be enforceable by, each such indemnified party,
his heirs and his personal representatives and shall be binding on all
successors and assigns of the Surviving Corporation.
 
                                     A-28

<PAGE>
 
  5.14 Representation on Nipsco Board. Nipsco shall take such action as may be
necessary to cause the number of directors comprising the Nipsco Board at the
Effective Time to be sufficient as to permit, subject to election by the
Nipsco shareholders, one director of the Company to serve thereon and shall
nominate and recommend for such election a Company director, who is to be
mutually determined by Nipsco and the Company and who shall serve on the
Nipsco Board for the remaining term of the class to which such director is
elected.
 
  5.15 Cooperation, Notification. As contemplated by the provisions of Section
6.1 below, officers of the Company shall (i) confer on a regular and frequent
basis with officers of Nipsco to discuss the general status of the operation
of the Company and (ii) promptly notify Nipsco of any significant changes in
its business, properties, financial condition or results of operations. Each
of the Company and Nipsco shall advise the other of any change or event that
has had or is reasonably likely to result in a Company Material Adverse Effect
or a Nipsco Material Adverse Effect, as the case may be; and promptly provide
the other with copies of all filings made by it or any of its Subsidiaries
with any Governmental Entity in connection with this Agreement and the
transactions anticipated hereby.
 
  5.16 Termination of Company Dividend Reinvestment Plan. The Company shall
terminate its Dividend Reinvestment Plan as soon as reasonably practicable,
but in any event no later than two months prior to the anticipated Effective
Time.
 
  5.17 Federal Income Tax Treatment. The Company and Nipsco shall use their
reasonable best efforts to ensure that the Merger constitutes a reorganization
within the meaning of Section 368(a) of the Code.
 
  5.18 Termination of Shareholder Rights Plan. The Company shall coordinate
with Nipsco the timing of the redemption of the common share purchase rights
issued pursuant to the Shareholder Rights Plan Agreement, but such redemption
shall take place in any event before the Effective Time.
 
  5.19 Actions Relating to Acquisition. In connection with the organization of
Acquisition, as soon as practicable following the creation of Acquisition,
Nipsco shall: (a) cause the directors and officers of Acquisition to take such
steps as may be necessary or appropriate to complete the organization of
Acquisition; (b) adopt (as sole shareholder of Acquisition) this Agreement;
(c) cause this Agreement to be approved and to be executed and delivered, by
Acquisition; and (d) cause Acquisition to perform its obligations under this
Agreement.
 
  5.20 Recognition of Existing Contracts. Nipsco shall honor all existing
severance and change of control agreements of the Company and all union
contracts in accordance with their terms as in effect on the date hereof, in
the manner set forth in Section 3.8.7 of the Company Disclosure Schedule.
 
  5.21 Redemption of Company Preferred Stock. The Company shall redeem all of
its outstanding Company Preferred A Shares and Company Preferred B Shares
prior to its mailing of the Proxy Statement to its shareholders in which the
holders of Company Shares are asked to vote to approve the Merger.
 
  5.22 Company Stock Options. (a) At the Effective Time, each outstanding
option issued under the Company Key Employee Stock Option Plan (each, a
"Company Option"), shall be assumed by Nipsco. Each such option shall be
deemed to constitute an option to acquire, on the same terms and conditions as
were applicable under such Company Option, a number of shares of Nipsco Common
Stock equal to the number of shares of Company Common Stock purchasable
pursuant to such Company Option multiplied by the Exchange Ratio, at a price
per share equal to the per-share exercise price for the shares of Company
Common Stock purchasable pursuant to such Company Option divided by the
Exchange Ratio; provided, however, that in the case of any option to which
Section 421 of the Code applies by reason of its qualification under any of
Sections 422-424 of the Code, the option price, the number of shares
purchasable pursuant to such option and the terms and conditions of exercise
of such option shall be determined in order to comply with Section 425(a) of
the Code; and provided further, that the number of shares of Nipsco Common
Stock that may be purchased upon exercise of such Company Option shall not
include any fractional share and, upon exercise of such Company Option, a cash
payment shall be made for any fractional share based upon the closing price of
a share of Nipsco Common Stock on the NYSE on the last trading day of the
calendar month immediately preceding the date of exercise.
 
                                     A-29

<PAGE>
 
  (b) Nipsco shall take all corporate action necessary and appropriate (i) to
reserve for issuance a sufficient number of shares of Nipsco Common Stock for
delivery upon exercise of the Company Options assumed in accordance with this
Section 5.22 and (ii) to obtain approval of its board of directors or the
compensation committee thereof for the assumption of such Company Options
before the Effective Time. As soon as practicable after the Effective Time
Nipsco shall file with the SEC a registration statement on Form S-8 (or any
successor form) or another appropriate form (or shall cause such Company
Option to be deemed an option issued pursuant to a Nipsco stock option plan
for which shares of Nipsco Common Stock have previously been registered
pursuant to an appropriate registration form), with respect to the shares of
Nipsco Common Stock subject to the Company Options assumed in accordance with
this Section 5.22 and shall use all commercially reasonable efforts to
maintain the effectiveness of such registration statement or registration
statements for so long as the Company Options remain outstanding. At or prior
to the Effective Time, the Company shall make all necessary arrangements with
respect to its Key Employee Stock Option Plan to permit the assumption of
unexercised Company Options by Nipsco pursuant to this Section 5.22.
 
                                  ARTICLE VI
 
           COVENANTS RELATING TO CONDUCT OF BUSINESS PRIOR TO MERGER
 
  6.1 Conduct of Business of Company Pending the Merger. Prior to the date
hereof, the Company shall have delivered a capital budget of the Company and
its Subsidiaries dated December 17, 1997 (the "Company Capital Budget") .
During the period from the date of this Agreement and continuing until the
Effective Time or earlier termination of this Agreement, the Company agrees as
to itself and its Subsidiaries that except as expressly contemplated or
permitted by this Agreement or in connection with any joint venture that the
Company and Nipsco may enter into, or to the extent that Nipsco shall
otherwise consent in writing (it being understood that if a particular
activity is permissible as a result of its being disclosed and, where
applicable, approved by Nipsco under any one of the Article VI sections of the
Company Disclosure Schedule, that activity will not be prohibited under any of
the sections of Article VI):
 
    6.1.1 Ordinary Course of Business. The Company shall, and shall cause its
  Subsidiaries to, carry on their respective businesses in the usual, regular
  and ordinary course consistent with past practice and use all commercially
  reasonable efforts to preserve intact their present business organizations
  and goodwill, keep available the services of their current officers and key
  employees, endeavor to preserve the goodwill and relationships with
  regulators, customers, suppliers and others having business dealings with
  them, all to the end that their goodwill and ongoing businesses shall not
  be impaired in any material respect at the Effective Time.
 
    6.1.2 Dividends; Changes in Stock. The Company shall not, and it shall
  not permit any of its Subsidiaries, to: (i) declare or pay any dividends on
  or make other distributions in respect of any of its capital stock except
  for the declaration and payment, with Record Dates and usual payment dates,
  of regular quarterly cash dividends on the Company Common Shares not in
  excess, in any fiscal year, of the dividends for the prior fiscal year
  increased at a rate consistent with past practice, or dividends payable by
  a Subsidiary of the Company to the Company or to a wholly owned Subsidiary
  of the Company; (ii) split, combine or reclassify any of its capital stock
  or issue or authorize or propose the issuance of any other securities in
  respect of, in lieu of or in substitution for shares of its capital stock;
  or (iii) repurchase, redeem or otherwise acquire, or permit any of its
  Subsidiaries to purchase, redeem or otherwise acquire, any shares of its
  capital stock or other voting securities or any securities convertible
  into, or any rights, warrants, calls, subscriptions or options to acquire,
  shares of capital stock or other voting securities of the Company or any of
  its Subsidiaries, (x) except as required by the terms of any such
  securities outstanding on the date hereof, (y) the redemption of Company
  Preferred A Shares and Company Preferred B Shares at the lowest applicable
  redemption price in accordance with the terms thereof and (z) Company
  Shares in ordinary market transactions not in excess of the number of
  Company Shares required to be issued pursuant to stock grants or stock-
  based awards made as of the date hereof pursuant to the Company Stock Plans
  in accordance with the present terms of such plans. Notwithstanding
  anything in this Section 6.1.2 to the contrary, the Company
 
                                     A-30

<PAGE>
 
  may declare a special dividend, to be paid at or immediately prior to the
  Closing, up to but not in excess of an amount per share determined by
  multiplying the "Daily Rate" times the number of days between December 17,
  1998 and the Closing. For purposes of the foregoing, the Daily Rate shall
  mean the dollar amount per share that results from dividing (A) the
  difference between (x) the Company's publicly reported earnings per share
  (normalized for the effects of weather) for the twelve months ended as of
  the end of the most recently completed quarter for which earnings have been
  publicly reported prior to the Closing (adjusted to eliminate the effect of
  any extraordinary items or other mutually agreed-upon nonrecurring items,
  including, but not limited to, the financial impact of the leaseback of the
  Metscan AMR devices) and (y) the greater of (i) the aggregate amount of the
  Company's regular cash dividends per share paid during the same twelve
  month period or (ii) $1.58 by (B) 365; provided, however, that in no event
  shall the Daily Rate exceed $0.00219. As used herein, "Record Date" means
  each February 15, May 15, August 15 or November 15 (or, if such date is not
  a business day, the first business day immediately following such date).
 
    6.1.3 Issuance of Securities. The Company shall not, and shall not permit
  any of its Subsidiaries to, issue, deliver, sell, pledge, dispose of or
  encumber, or authorize or propose to issue, deliver, sell, pledge, dispose
  of or encumber, any shares of its capital stock of any class or other
  voting securities or any securities convertible into, or any rights,
  warrants, calls, subscriptions or options to acquire, any shares of capital
  stock or other voting securities or convertible securities of the Company
  or any of its Subsidiaries, other than: the issuance of the Company Common
  Shares pursuant to stock grants or stock-based awards made as of the date
  hereof pursuant to the Company Stock Plans in accordance with the present
  terms of such plans and issuances of stock by Subsidiaries to its direct or
  indirect parent.
 
    6.1.4 Capital Expenditures. Except for capital expenditures that the
  Company or any of its Subsidiaries are required to make under applicable
  law, the Company shall not, nor shall the Company permit any of its
  Subsidiaries to, make capital expenditures (including capital lease
  obligations) in excess of the amounts budgeted for capital expenditures as
  set forth in the Company Capital Budget.
 
    6.1.5 No Acquisitions. Except as set forth in Section 6.1.5 of the
  Company Disclosure Schedule and not objected to by Nipsco within 45 days
  after the date of this Agreement, the Company shall not, and shall not
  permit any of its Subsidiaries to, acquire or agree to acquire by merging
  or consolidating with, or by purchasing an interest in or a portion of the
  assets of, or by any other manner, any business or any corporation,
  partnership, association or other business organization or division
  thereof.
 
    6.1.6 No Dispositions. Except as set forth in Section 6.1.6 of the
  Company Disclosure Schedule, and except for dispositions in the ordinary
  course of business as to which the market value is not in excess of $2
  million singularly or aggregate, the Company shall not, and it shall not
  permit any of its Subsidiaries to, sell, lease (whether such lease is an
  operating or capital lease), encumber or otherwise dispose of, or agree to
  sell, lease, encumber or otherwise dispose of, any of its assets.
 
    6.1.7 No Dissolution, Etc. The Company shall not authorize, recommend,
  propose or announce an intention to adopt a plan of complete or partial
  liquidation, dissolution, merger, consolidation, restructuring,
  recapitalization or other reorganization of the Company or any of its
  Subsidiaries; provided that nothing in this Section 6.1.7 preclude any such
  transaction which involves only wholly owned Subsidiaries of the Company.
 
    6.1.8 Limitation on Investment in Joint Ventures. Except as set forth in
  Section 6.1.8 of the Company Disclosure Schedule, the Company will not
  make, and will not permit any Subsidiary to make, any additional material
  investments in, or loans or capital contributions to, or to undertake any
  guarantees or other obligations with respect to any joint venture or
  partnership.
 
    6.1.9 Certain Employee Matters. Except as may be required by applicable
  law or any agreement to which the Company or any of its Subsidiaries is a
  party on the date hereof or as set forth in Section 6.1.9 of the Company
  Disclosure Schedule, the Company shall not, nor shall it permit any of its
  Subsidiaries to:
 
      (i) except in the ordinary course of business consistent with past
    practice, increase the amount of (or accelerate the payment or vesting
    of) any benefit or amount payable under, any employee benefit plan or
    any other contract, agreement, commitment, arrangement, plan or policy
    providing for
 
                                     A-31

<PAGE>
 
    compensation or benefits to any former, present or future director,
    officer or employee of the Company or any of its Subsidiaries and
    maintained by, contributed to or entered into by, the Company or any of
    its Subsidiaries on or prior to the date hereof, including, without
    limitation, any Company Benefit Plan outstanding on the date hereof;
 
      (ii) except in the ordinary course of business consistent with past
    practice, increase (or enter into any contract, agreement, commitment
    or arrangement to increase in any manner) the compensation or fringe
    benefits, or otherwise to extend, expand or enhance the engagement,
    employment or any related rights, of any former, present or future
    director, officer or employee of the Company or any of its
    Subsidiaries, except for (x) normal increases in the ordinary course of
    business consistent with past practice, provided that the overall non-
    bargaining base pay compensation budget for fiscal year 1998 shall not
    increase by more than 4% above the level approved as of the date hereof
    for fiscal year 1998, and for fiscal year 1999, the non-bargaining base
    pay compensation budget shall be at such level as is proposed by the
    Company and approved by Nipsco or (y) increases required under
    applicable law; or
 
      (iii) adopt, establish, enter into, implement or amend any plan,
    policy, employment agreement, severance agreement, or other contract,
    agreement or other arrangement providing for any form of benefits or
    other compensation to any former, present or future director, officer
    or employee of the Company or any of its Subsidiaries, other than in
    the ordinary course of business consistent with past practice.
 
    6.1.10 Indebtedness; Leases. Except as set forth in Section 6.1.10 of the
  Company Disclosure Schedule, the Company shall not, nor shall the Company
  permit any of its Subsidiaries to, (A) incur any indebtedness for borrowed
  money or guarantee, or enter into a "keepwell" or similar arrangement with
  respect to, any such indebtedness (including, without limitation, issuances
  or sales of any debt securities or warrants or rights to acquire any debt
  securities of the Company or any of its Subsidiaries), other than (x)
  indebtedness between the Company or any of its Subsidiaries and another of
  its Subsidiaries and (y) additional indebtedness in the ordinary course of
  business under existing credit facilities, including the Company's
  commercial paper facilities, in an amount not to exceed $90,000,000 or (B)
  enter into any material operating lease or create any mortgages, liens,
  security interests or other encumbrances on the property of the Company or
  any of its Subsidiaries in connection with any indebtedness thereof, except
  with respect to indebtedness permitted pursuant to this Section 6.1.10 or
  (c) enter into any financial derivatives contract or purchase or sell any
  exchange traded derivative futures or option contract, except for natural
  gas hedging purposes in strict compliance with a price and/or basis risk
  management policy approved in writing by Nipsco.
 
    6.1.11 Governing Documents. Neither the Company nor any of its
  Subsidiaries shall amend or propose to amend its certificate of
  incorporation or by-laws (or similar governing documents).
 
    6.1.12 Accounting. The Company shall not, nor shall it permit any of its
  Subsidiaries to, make any changes in their accounting methods, except as
  required by law, rule, regulation or GAAP.
 
    6.1.13 Rate Matters. Subject to applicable law and except for non-
  material filings in the ordinary course of business consistent with past
  practice, the Company shall consult with Nipsco prior to implementing any
  changes in its or any of its Subsidiaries' rates or charges (other than
  automatic cost pass-through rate adjustment clauses), standards of service
  or accounting or executing any agreement with respect thereto that is
  otherwise permitted under this Agreement and the Company shall, and shall
  cause its Subsidiaries to, deliver to Nipsco a copy of each such filing or
  agreement at least five days prior to the filing or execution thereof so
  that Nipsco may comment thereon. The Company shall, and shall cause its
  Subsidiaries to, make all such filings only in the ordinary course of
  business consistent with past practice.
 
    6.1.14 Gas Transmission and Storage. Except as required pursuant to
  tariffs on file with the FERC as of the date hereof, in the ordinary course
  of business consistent with past practice, neither the Company nor any
  Subsidiary of the Company shall commence construction of any additional gas
  transmission, gas delivery or gas storage capacity, or obligate itself to
  purchase or otherwise acquire any additional transmission, delivery or
  storage facilities, or to sell or otherwise dispose of, or to share, any
  such facilities owned by it.
 
                                     A-32

<PAGE>
 
    6.1.15 Contracts. Except in the ordinary course of business consistent
  with past practice, the Company shall not, nor shall it permit any of its
  Subsidiaries to, modify, amend or terminate any material contract or
  agreement to which the Company or any of its Subsidiaries is a party or
  waive, release or assign any material rights or claims under any such
  contract or agreement.
 
    6.1.16 Insurance. The Company shall, and shall cause its Subsidiaries to,
  maintain with financially responsible insurance companies (or through self-
  insurance) insurance in such amounts and against such risks and losses as
  are customary for companies engaged in their respective businesses.
 
    6.1.17 Permits. The Company shall, and shall cause its Subsidiaries to,
  maintain in effect all existing governmental permits (including
  Environmental Permits) which are material to their respective operations.
 
    6.1.18 Discharge of Liabilities. The Company shall not, nor shall it
  permit any of its Subsidiaries to, pay, discharge or satisfy any material
  claims, liabilities or obligations (absolute, accrued, asserted or
  unasserted, contingent or otherwise), other than the payment, discharge or
  satisfaction, in the ordinary course of business consistent with past
  practice (which includes the payment of final and unappealable judgments
  and the refinancing of existing indebtedness for borrowed money either at
  its stated maturity or at a lower cost of funds) or as required by their
  terms, of liabilities reflected or reserved against in, or contemplated by,
  the most recent consolidated financial statements (or the notes thereto) of
  the Company included in the Filed Company SEC Documents, or incurred in the
  ordinary course of business consistent with past practice.
 
    6.1.19 1935 Act. The Company shall not, and shall not permit any of its
  Subsidiaries to, engage in any activities which would cause a change in its
  status as a holding company exempt from the 1935 Act under Section 3(a)(2)
  pursuant to Rule 2 of that Act, or that would impair the ability of Nipsco
  to continue to claim an exemption under Section 3(a)(1) of the 1935 Act
  following the Merger.
 
    6.1.20 Tax Matters. The Company shall not make or rescind any material
  election or settle or compromise any material claim, action, suit,
  litigation, proceeding, arbitration, investigation, audit, or controversy
  relating to Taxes, or change any of its methods of reporting income or
  deductions for federal income tax purposes from those employed in the
  preparation of its federal income tax return for the taxable year ending
  December 31, 1996, except as may be required by applicable law.
 
    6.1.21 Tax Status. The Company and Nipsco shall not, and shall not permit
  any of their Subsidiaries to, take any actions which would, or would be
  reasonably likely to, adversely affect the status of the Merger as a
  reorganization under Section 368(a) of the Code.
 
  6.2 Management of the Company and its Subsidiaries. The Company shall, from
the date of this Agreement through the Effective Time, cause its management
and that of its Subsidiaries to consult on a regular basis and in good faith
with the employees and representatives of Nipsco concerning the management of
the Company's and its Subsidiaries' businesses.
 
  6.3 Conduct of Business of Nipsco Pending the Merger. During the period from
the date of this Agreement and continuing until the Effective Time or earlier
termination of this Agreement, Nipsco shall, and shall cause its Subsidiaries
to, conduct their respective businesses so that the character of the business
of Nipsco and its Subsidiaries taken as a whole will not be fundamentally
altered. In no event shall either Nipsco or any of its Subsidiaries be
required to notify the Company or obtain the Company's consent prior to making
any acquisitions or dispositions of any businesses or assets.
 
  6.4 Other Actions. The Company and Nipsco shall not, and shall not permit
any of their respective Subsidiaries to, take any action that would, or that
could reasonably be expected to, result in (i) any of the representations and
warranties of such party set forth in this Agreement becoming untrue in any
material respect, or (ii) any of the conditions of the Merger set forth in
Article VII not being satisfied on or prior to the Closing Date.
 
                                     A-33

<PAGE>
 
                                  ARTICLE VII
 
                             CONDITIONS PRECEDENT
 
  7.1 Conditions to Each Party's Obligation to Effect the Merger. The
respective obligation of each party to effect the Merger is subject to the
satisfaction or waiver on or prior to the Closing Date of the following
conditions:
 
    7.1.1 Company Shareholder Approval. This Agreement and the Merger shall
  have been approved and adopted by an affirmative vote of the holders of the
  requisite number of shares present, in person or by proxy, and entitled to
  vote on the Merger at the Company Special Meeting.
 
    7.1.2 Governmental and Regulatory Consents. The Company Required
  Statutory Approvals and the Nipsco Required Statutory Approvals shall have
  been obtained at or prior to the Effective Time, such approvals shall have
  become Final Orders (as hereinafter defined), and no Final Order shall
  impose terms or conditions that would have, or would be reasonably likely
  to have, a material adverse effect on the business, operations, properties,
  assets, condition (financial or otherwise), prospects or results of
  operations of the Company as if it were organized as a separate subsidiary
  of Nipsco following the Merger or a material adverse effect on the
  business, operations, properties, assets, condition (financial or other),
  prospects or results of operations of Nipsco as if it were organized as a
  separate division of Nipsco following the Merger, or that would be
  materially inconsistent with the agreements of the parties contained
  herein. A "Final Order" means action by the relevant regulatory authority
  that has not been reversed, stayed, enjoined, set aside, annulled or
  suspended, with respect to which any waiting period prescribed by law
  before the transactions contemplated hereby may be consummated has expired,
  and as to which all conditions to the consummation of such transactions
  prescribed by law, regulation or order have been satisfied, and as to which
  all opportunities for rehearing are exhausted (whether or not any appeal
  thereof is pending).
 
    7.1.3 HSR Act. The waiting period (and any extension thereof) applicable
  to the Merger under the HSR Act shall have been terminated or shall have
  otherwise expired.
 
    7.1.4 No Injunctions or Restraints. No temporary restraining order,
  preliminary or permanent injunction or other order issued by any court of
  competent jurisdiction or other legal restraint or prohibition preventing
  the consummation of the Merger shall be in effect; provided, however, that
  the party invoking this condition shall use its best efforts to have any
  such order or injunction vacated.
 
    7.1.5 NYSE Listing. The Nipsco Common Shares issuable to the Company's
  shareholders pursuant to this Agreement shall have been approved for
  listing on the NYSE, subject to official notice of issuance.
 
    7.1.6 Registration Statement. The Registration Statement shall have
  become effective under the Securities Act and shall not be the subject of
  any stop order or proceedings seeking a stop order.
 
    7.1.7 Share Purchase Rights. The common share purchase rights issued
  pursuant to the Shareholder Rights Agreement shall have been redeemed.
 
  7.2 Conditions to Obligations of Nipsco. The obligations of Nipsco to effect
the Merger are further subject to the following conditions:
 
    7.2.1 Representations and Warranties. The representations and warranties
  of the Company contained in this Agreement shall be true and correct in all
  material respects on the date hereof and (except to the extent expressly
  given as of a specified date) on and as of the Closing Date as though made
  on the Closing Date, and the Company shall have delivered to Nipsco a
  certificate dated as of the Closing Date signed by an executive officer to
  the effect set forth in this Section 7.2.1.
 
    7.2.2 Performance of Obligations of the Company. The Company shall have
  performed in all material respects all obligations required to be performed
  by it under this Agreement at or prior to the Closing Date, and the Company
  shall have delivered to Nipsco a certificate dated as of the Closing Date
  signed by an executive officer to the effect set forth in this Section
  7.2.2.
 
                                     A-34

<PAGE>
 
    7.2.3 Tax Opinion. Nipsco shall have received the opinion dated the
  Closing Date of SH&W, to the effect that for federal income tax purposes
  the Merger shall constitute a reorganization within the meaning of Section
  368(a) of the Code and no gain or loss shall be recognized by Nipsco,
  Acquisition or the Company as a consequence of the Merger. In rendering
  such opinion, SH&W shall be entitled to receive and may rely on
  representations contained of Nipsco, Acquisition, Northern, the Company and
  certain shareholders of the Company, which are in form and substance
  reasonably satisfactory to such counsel.
 
    7.2.4 Consents and Approvals. The Company and its Subsidiaries shall have
  received the consents set forth in Section 3.4 of the Company Disclosure
  Schedule.
 
  7.3 Conditions to Obligation of the Company. The obligation of the Company
to effect the Merger is further subject to the following conditions:
 
    7.3.1 Representations and Warranties. The representations and warranties
  of Nipsco contained in this Agreement shall be true and correct in all
  material respects on the date hereof and (except to the extent specifically
  given as of an earlier date and except for the representations and
  warranties set forth in Sections 4.9 and 4.13) as of the Closing Date as
  though made on the Closing Date, and Nipsco shall have delivered to the
  Company a certificate dated as of the Closing Date, signed by an executive
  officer of Nipsco and to the effect set forth in this Section 7.3.1.
 
    7.3.2 Performance of Obligations of Nipsco. Nipsco shall have performed
  in all material respects all obligations required to be performed by it
  under this Agreement at or prior to the Closing Date, and Nipsco shall have
  delivered to the Company a certificate dated as of the Closing Date, signed
  by an executive officer of Nipsco and to the effect set forth in this
  Section 7.3.2.
 
    7.3.3 Tax Opinion. The Company shall have received the opinion dated the
  Closing Date of LLG&M, to the effect that for federal income tax purposes
  the Merger shall constitute a reorganization within the meaning of Section
  368(a) of the Code and that shareholders of the Company shall not be
  subject to federal income tax on the receipt of Nipsco Common Shares in
  exchange for Company Shares pursuant to the Merger. In rendering such
  opinion, LLG&M shall be entitled to receive and may rely on representations
  of Nipsco, Acquisition, Northern, the Company and certain shareholders of
  the Company, which are in form and substance reasonably satisfactory to
  such counsel.
 
    7.3.4 Consents and Approvals. Nipsco and its Subsidiaries shall have
  received the consents set forth in Section 4.4 of the Nipsco Disclosure
  Schedule.
 
                                 ARTICLE VIII
 
                       TERMINATION, AMENDMENT AND WAIVER
 
  8.1 Termination. This Agreement may be terminated and abandoned at any time
prior to the Effective Time, whether before or after approval of matters
presented in connection with the Merger by the shareholders of the Company:
 
    8.1.1 by mutual written consent of Nipsco and the Company;
 
    8.1.2 by either Nipsco or the Company, by written notice to the other:
 
      (i) if, upon a vote at a duly held Company Special Meeting, the
    Company Requisite Vote shall not have been obtained;
 
      (ii) if the Effective Time shall not have occurred on or before
    December 31, 1998; provided, however, that such date shall
    automatically be changed to June 30, 1999 if, on December 31, 1998:
 
        (a) the conditions set forth in Section 7.1.2 have not been
      satisfied or waived;
 
        (b) the other conditions to the consummation of the transactions
      contemplated hereby are then capable of being satisfied; and
 
                                     A-35

<PAGE>
 
        (c) any approvals required by Section 7.1.2 that have not yet been
      obtained are being pursued with diligence; provided, further, that
      the right to terminate this Agreement under this Section 8.1.2 shall
      not be available to any party whose failure to fulfill any
      obligation under this Agreement has been the cause of, or resulted
      in, the failure of the Effective Time to occur on or before the
      termination date;
 
      (iii) if either party shall have exercised its rights set forth in
    Section 1.2.2 of this Agreement on or after December 31, 1998;
 
      (iv) if any Governmental Entity shall have issued an order, decree or
    ruling or taken any other action permanently enjoining, restraining or
    otherwise prohibiting the Merger and such order, decree, ruling or
    other action shall have become final and nonappealable; or
 
      (v) if the Company Board shall have exercised its rights set forth in
    Section 5.10 of this Agreement.
 
    8.1.3 by the Company if there shall have been any material breach of any
  representation or warranty, or any material breach of any covenant or
  agreement, of Nipsco hereunder and such breach shall not have been remedied
  within 20 days after receipt by Nipsco of notice in writing from the
  Company, specifying the nature of such breach and requesting that it be
  remedied; or
 
    8.1.4 by Nipsco if there shall have been any material breach of any
  representation or warranty, or any material breach of any covenant or
  agreement, of the Company hereunder and such breach shall not have been
  remedied within 20 days after receipt by the Company of notice in writing
  from Nipsco, specifying the nature of such breach and requesting that it be
  remedied.
 
  8.2 Effect of Termination.
 
    8.2.1 In the event of termination of this Agreement by either the Company
  or Nipsco as provided in Section 8.1, except as provided in Sections 8.2.4
  and 8.2.5, this Agreement shall forthwith become void and have no effect,
  without any liability or obligation on the part of Nipsco or the Company,
  other than the last sentence of Section 5.7 and Sections 8.2 and 11.2.
  Nothing contained in this Section shall relieve any party from any
  liability resulting from any material breach of the representations,
  warranties, covenants or agreements set forth in this Agreement.
 
    8.2.2 In the event of termination of this Agreement by Nipsco pursuant to
  Section 8.1.4 and at such time no third party Acquisition Proposal has been
  made, the Company shall pay to Nipsco as liquidated damages and not as a
  penalty, an amount in cash equal to the out-of-pocket expenses and fees
  incurred by Nipsco arising out of, in connection with or related to the
  Merger or the transactions contemplated by this Agreement not in excess of
  $10,000,000 within 60 days of such termination, provided that Nipsco shall
  not be in material breach of its obligations under this Agreement.
 
    8.2.3 In the event of termination of this Agreement by the Company
  pursuant to Section 8.1.3, Nipsco shall pay to the Company, as liquidated
  damages and not as a penalty, an amount in cash equal to the out-of- pocket
  expenses and fees incurred by the Company arising out of, in connection
  with or related to the Merger or the transactions contemplated by this
  Agreement not in excess of $10,000,000 within 60 days of such termination,
  provided that the Company shall not be in material breach of its
  obligations under this Agreement.
 
    8.2.4 If (i) this Agreement is terminated (x) pursuant to Section
  8.1.2(v), (y) following a failure to hold the Company Special Meeting or
  failure to obtain the Company Requisite Vote, as the case may be, or (z)
  pursuant to Section 8.1.4; and (ii) in the case of clauses (y) and (z), at
  the time of such termination there shall have been made a third party
  Acquisition Proposal then promptly (but not later than 30 days after such
  termination), the Company shall pay to Nipsco a fee of $10,000,000.
 
    8.2.5 If Section 8.2.4 is applicable and a transaction contemplated by
  the Acquisition Proposal referred to in Section 8.2.4 or any other
  Acquisition Proposal that the Company Board accepts in lieu of the
  Acquisition Proposal referred to in Section 8.2.4 is consummated within two
  and one-half years of termination of this Agreement, the Company shall pay
  to Nipsco an additional fee of $15,000,000 upon such consummation.
 
                                     A-36

<PAGE>
 
    8.2.6 The payments provided in Sections 8.2.2, 8.2.3, 8.2.4 and 8.2.5
  shall be the parties' sole and exclusive remedies hereunder for the
  termination of this Agreement under the circumstances in which such
  payments are paid (regardless of any breach of this Agreement), and upon
  such delivery of such payment to Nipsco or the Company, as the case may be,
  no person shall have any further claim or rights against the Company,
  Nipsco or Acquisition under this Agreement.
 
  8.3 Amendment.  Subject to applicable law, at any time prior to the
Effective Time, the parties hereto may modify or amend this Agreement, by
written agreement executed and delivered by duly authorized officers of the
respective parties; provided, however, that after approval of the Merger by
the shareholders of the Company, no amendment shall be made that reduces the
Merger Consideration payable in the Merger or adversely affects the rights of
the Company's shareholders hereunder without the approval of such
shareholders. This Agreement may not be amended except by an instrument in
writing signed on behalf of each of the parties.
 
  8.4 Extension; Waiver. At any time prior to the Effective Time, subject to
applicable law, the parties may (i) extend the time for the performance of any
of the obligations or other acts of the other parties, (ii) waive any
inaccuracies in the representations and warranties of the other parties
contained in this Agreement or in any document delivered pursuant to this
Agreement or (iii) waive compliance with any of the agreements or conditions
of the other parties contained in this Agreement. Any agreement on the part of
a party to any such extension or waiver shall be valid only if set forth in an
instrument in writing signed on behalf of such party. The failure of any party
to this Agreement to assert any of its rights under this Agreement or
otherwise shall not constitute a waiver of such rights.
 
  8.5 Procedure for Termination, Amendment, Extension or Waiver. A termination
of this Agreement pursuant to Section 8.1, an amendment of this Agreement
pursuant to Section 8.3 or an extension or waiver pursuant to Section 8.4
shall, in order to be effective, require in the case of Nipsco or the Company,
action by its board of directors or the duly authorized designee of its board
of directors.
 
                                  ARTICLE IX
 
                            SURVIVAL OF PROVISIONS
 
  9.1 Survival. The representations and warranties respectively required to be
made by the Company and Nipsco in this Agreement, or in any certificate,
respectively, delivered by the Company or Nipsco pursuant to Section 7.2 or
Section 7.3 hereof, shall terminate upon the Closing and be of no further
force or effect.
 
                                   ARTICLE X
 
                                    NOTICES
 
  10.1 Notices. Any notice or communication given pursuant to this Agreement
must be in writing and shall be deemed to have been duly given if mailed (by
registered or certified mail, postage prepaid, return receipt requested),
transmitted by facsimile or delivered by courier, as follows:
 
    If to the Company, to:
 
      Bay State Gas Company 
      300 Friberg Parkway 
      Westborough, Massachusetts 01581-5039 
      Attention: Joel L. Singer 
      Telephone: 508-836-7310
      Facsimile: 508-836-7075
 
                                     A-37

<PAGE>
 
    with a copy to:
 
      LeBoeuf, Lamb, Greene & MacRae, L.L.P. 
      125 West 55th Street New
      York, New York 10019 
      Attention: Douglas W. Hawes, Esq. 
      Telephone: 212-424-8000 
      Facsimile: 212-424-8500
 
    If to Nipsco, to:
 
      NIPSCO Industries, Inc. 
      5265 Hohman Avenue 
      Hammond, Indiana 46320
      Attention: Stephen P. Adik 
      Telephone: 219-647-6012 
      Facsimile: 219-647-6060
 
    with copies to:
 
      Schiff Hardin & Waite 
      7200 Sears Tower 
      Chicago, Illinois 60606
      Attention: Peter V. Fazio, Jr. 
      Telephone: 312-876-1000 
      Facsimile: 312-258-5600
 
  All notices and other communications required or permitted under this
Agreement that are addressed as provided in this Section 10.1 shall, whether
sent by mail, facsimile or courier, be deemed given upon the first Business
Day after actual delivery to the party to whom such notice or other
communication is sent (as evidenced by the return receipt or shipping invoice
signed by a representative of such party or by facsimile confirmation). Any
party from time to time may change its address for the purpose of notices to
that party by giving a similar notice specifying a new address, but no such
notice shall be deemed to have been given until it is actually received by the
party sought to be charged with the contents thereof. For purposes of this
Section 10.1, "Business Day" shall mean a day other than Saturday, Sunday or
any day on which the principal commercial banks located in Massachusetts are
authorized or obligated to close under the laws of Massachusetts.
 
                                  ARTICLE XI
 
                                 MISCELLANEOUS
 
  11.1 Entire Agreement. This Agreement constitutes the entire agreement
between the parties hereto with respect to the subject matter hereof and
supersedes, except as set forth in Section 5.7 with respect to the
Confidentiality Agreement, all prior communications, agreements,
understandings, representations and warranties, whether oral or written,
between the parties hereto. There are no oral or written agreements,
understandings, representations or warranties between the parties hereto with
respect to the subject hereof other than those set forth in this Agreement.
 
  11.2 Expenses. The Company and Nipsco each shall pay its own costs and
expenses incident to preparing for, entering into and carrying out this
Agreement and the consummation of the transactions contemplated hereby, except
that (i) the filing fee in respect of the notification and report under the
HSR Act and (ii) the expenses incurred in connection with the printing,
mailing and distribution of the Proxy Statement and the preparation and filing
of the Registration Statement shall be borne equally by the Company and
Nipsco.
 
                                     A-38

<PAGE>
 
  11.3 Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
shall constitute one and the same instrument and shall become effective when
one or more counterparts have been signed by each of the parties and delivered
to the other parties.
 
  11.4 No Third Party Beneficiary. Except as otherwise specifically provided
in Section 5.13, this Agreement is not intended and may not be construed to
create any rights in any parties other than the Company and Nipsco and their
respective successors or assigns, and it is not the intention of the parties
to confer third-party beneficiary rights upon any other person.
 
  11.5 Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the Commonwealth of Massachusetts (without regard
to the principles of conflicts of law) applicable to a contract executed and
to be performed therein.
 
  11.6 Assignment; Binding Effect. Neither this Agreement nor any of the
rights, interests or obligations under this Agreement shall be assigned, in
whole or in part, by operation of law or otherwise by any of the parties
without the prior written consent of the other parties, such consent not to be
unreasonably withheld, and any such assignment that is not consented to shall
be null and void. Subject to the preceding sentence, this Agreement shall be
binding upon, inure to the benefit of and be enforceable by the parties and
their respective successors and assigns.
 
  11.7 Headings, Gender, etc. The headings used in this Agreement have been
inserted for convenience and do not constitute matter to be construed or
interpreted in connection with this Agreement. Unless the context of this
Agreement otherwise requires, (i) words of any gender are deemed to include
each other gender; (ii) words using the singular or plural number also include
the plural or singular number, respectively; (iii) the terms "hereof,"
"herein," "hereby," "hereto," and derivative or similar words refer to this
entire Agreement; (iv) the terms "Article" or "Section" refer to the specified
Article or Section of this Agreement; (v) all references to "dollars" or "$"
refer to currency of the United States of America; (vi) the term "person"
shall include any natural person, corporation, limited liability company,
general partnership, limited partnership, trust or other entity, enterprise,
authority or business organization; and (vii) the term "or" is inclusive.
 
  11.8 Invalid Provisions. If any provision of this Agreement is held to be
illegal, invalid or unenforceable under any present or future law, and if the
rights or obligations of the Company or Nipsco under this Agreement shall not
be materially and adversely affected thereby, (i) such provision shall be
fully severable, (ii) this Agreement shall be construed and enforced as if
such illegal, invalid or unenforceable provision had never comprised a part
hereof, and (iii) the remaining provisions of this Agreement shall remain in
full force and effect and shall not be affected by the illegal, invalid or
unenforceable provision or by its severance herefrom.
 
  In Witness Whereof, this Agreement has been duly executed and delivered by
the duly authorized officers of the Company and Nipsco effective as of the
date first written above.
 
                                        Nipsco Industries, Inc.
 
                                                    /s/ Gary L. Neale
                                        By: ___________________________________
                                           Name:Gary L. Neale
                                           Title: Chairman, President and
                                                  Chief Executive Officer
 
                                        Bay State Gas Company
 
                                                    /s/ Roger A. Young
                                        By: ___________________________________
                                           Name:Roger A. Young
                                           Title: Chairman and Co-Chief
                                                  Executive Officer
 
                                     A-39


<PAGE>
 

                                                                    EXHIBIT 10.3


                  CHANGE IN CONTROL AND TERMINATION AGREEMENT
                  -------------------------------------------


     NIPSCO Industries, Inc., an Indiana corporation ("Employer") and
________________ ("Executive") entered into a Change in Control and Termination
Agreement as of ____________________________________________ ("Agreement"), and
Employer and Executive hereby enter into an amendment and restatement of the
Agreement, effective September 1, 1997, which amended and restated Agreement is
hereinafter set forth.

                                  WITNESSETH:
                                  ----------

     WHEREAS, Executive is currently employed by Employer as its ______________;

     WHEREAS, Employer desires to provide security to Executive in connection
with Executive's employment with Employer in the event of a Change in Control
affecting Employer; and

     WHEREAS, Executive and Employer desire to enter into this Agreement
pertaining to the terms of the security Employer is providing to Executive with
respect to his employment in the event of a Change in Control;

     NOW, THEREFORE, in consideration of the mutual covenants and promises
contained herein, and other good and valuable consideration, the receipt of
which is hereby acknowledged, the parties agree as follows:

     1. Term. The term of this Agreement shall be the period beginning on the
date hereof and terminating on the date 36 months after such date (the "Term"),
provided that for each day from and after the date hereof the Term will
automatically be extended for an additional day, unless either Employer or
Executive has given written notice to the other party of its or his election to
cease such automatic extension, in which case the Term shall be the 36-month
period beginning on the date such notice is received by such other party.
<PAGE>
 

     2. Definitions. For purposes of this Agreement:

          (a) "Affiliate" or "Associate" shall have the meaning set forth in
     Rule 12b-2 under the Securities Exchange Act of 1934.

          (b) "Base Salary" shall mean Executive's monthly base salary at the
     rate in effect on the date of a reduction for purposes of paragraph (g) of
     this Section, or on the date of a termination of employment under
     circumstances described in subsections 3(a) or (b) below, whichever is
     higher; provided, however, that such rate shall in no event be less than
     the highest rate in effect for Executive at any time during the Term.

          (c) "Beneficiary" shall mean the person or entity designated by
     Executive, by written instrument delivered to Employer, to receive the
     benefits payable under this Agreement in the event of his death. If
     Executive fails to designate a Beneficiary, or if no Beneficiary survives
     Executive, such death benefits shall be paid:

               (i)    to his surviving spouse; or

               (ii)   if there is no surviving spouse, to his living descendants
                      per stirpes; or

               (iii)  if there is neither a surviving spouse nor descendants, to
                      his duly appointed and qualified executor or personal
                      representative.

          (d) "Bonus" shall mean Executive's target annual incentive bonus
     compensation for the calendar year in which the date of a termination of
     employment under circumstances described in subsection 3(a) below occurs,
     under the incentive bonus compensation plan then maintained by Employer;
     provided, however, that such target annual incentive bonus compensation
     shall in no event be less than the highest target annual incentive bonus

                                       2
<PAGE>
 

     compensation of Executive under any such incentive bonus compensation plan
     for any calendar year commencing during the Term.

          (e) A "Change in Control" shall be deemed to take place on the
     occurrence of any of the following events:

               (1) The acquisition by an entity, person or group (including all
          Affiliates or Associates of such entity, person or group) of
          beneficial ownership, as that term is defined in Rule 13d-3 under the
          Securities Exchange Act of 1934, of capital stock of Employer entitled
          to exercise more than 30% of the outstanding voting power of all
          capital stock of Employer entitled to vote in elections of directors
          ("Voting Power");

               (2) The effective time of (i) a merger or consolidation of
          Employer with one or more other corporations as a result of which the
          holders of the outstanding Voting Power of Employer immediately prior
          to such merger or consolidation (other than the surviving or resulting
          corporation or any Affiliate or Associate thereof) hold less than 50%
          of the Voting Power of the surviving or resulting corporation, or (ii)
          a transfer of 30% of the Voting Power, or a Substantial Portion of the
          Property, of Employer other than to an entity of which Employer owns
          at least 50% of the Voting Power; or

               (3) The election to the Board of Directors of Employer of
          candidates who were not recommended for election by the Board of
          Directors of Employer in office immediately prior to the election, if
          such candidates constitute a majority of those elected in that
          particular election.

                                       3
<PAGE>
 

Notwithstanding the foregoing, a Change in Control shall not be deemed to take
place by virtue of any transaction in which Executive is a participant in a
group effecting an acquisition of Employer and, after such acquisition,
Executive holds an equity interest in the entity that has acquired Employer.

          (f) "Good Cause" shall be deemed to exist if, and only if:

               (1) Executive engages in acts or omissions constituting
               dishonesty, intentional breach of fiduciary obligation or
               intentional wrongdoing or malfeasance, in each case that results
               in substantial harm to Employer or any Affiliate; or

               (2) Executive is convicted of a criminal violation involving
               fraud or dishonesty.

          (g) "Good Reason" shall be deemed to exist if, and only if:

               (1) there is a significant change in the nature or the scope of
               Executive's authorities or duties;

               (2) there is a significant reduction in Executive's monthly rate
               of Base Salary, his opportunity to earn a bonus under an
               incentive bonus compensation plan maintained by Employer or his
               benefits; or

               (3) Employer changes by 100 miles or more the principal location
               in which Executive is required to perform services.

          (h) "Pension Plan" shall mean any Retirement Plan that is a defined
     benefit plan as defined in Section 3(35) of the Employee Retirement Income
     Security Act of 1974, as amended ("ERISA").

                                       4
<PAGE>
 

          (i) "Retirement Plan" shall mean any qualified or supplemental
     employee pension benefit plan, as defined in Section 3(2) of ERISA,
     currently or hereinafter made available by Employer in which Executive is
     eligible to participate.

          (j) "Severance Period" shall mean the period beginning on the date
     Executive's employment with Employer terminates under circumstances
     described in subsection 3(a) and ending on the date 36 months thereafter.

          (k) "Substantial Portion of the Property of Employer" shall mean 50%
     of the aggregate book value of the assets of Employer and its Affiliates
     and Associates as set forth on the most recent balance sheet of Employer,
     prepared on a consolidated basis, by its regularly employed, independent,
     certified public accountants.

          (l) "Welfare Plan" shall mean any health and dental plan, disability
     plan, survivor income plan or life insurance plan, as defined in Section
     3(1) of ERISA, currently or hereafter made available by Employer in which
     Executive is eligible to participate.

     3. Benefits Upon Termination of Employment. (a) The following provisions
will apply if a Change in Control occurs during the Term, and (i) at any time
during the 24 months after the Change in Control occurs (whether during or after
the expiration of the Term), the employment of Executive with Employer is
terminated by Employer for any reason other than Good Cause, or Executive
terminates his employment with Employer for Good Reason, or (ii) at any time
during the thirteenth month after the Change in Control occurs (whether during
or after the expiration of the Term), Executive terminates his employment with
Employer for any reason:

          (1) Employer shall pay Executive an amount equal to 36 times the sum
     of (a) Executive's Base Salary plus (b) one-twelfth of his Bonus. Such
     amount shall be paid to

                                       5
<PAGE>
 

     Executive in a lump sum within 180 days after his date of termination of
     employment; provided, however, Executive, by written notice to Employer,
     may elect to receive such payment on any date that is no earlier than the
     later to occur of (i) the date 10 days after the date of termination, and
     (ii) the date 10 days after receipt of such notice.

          (2) Employer shall pay Executive an amount equal to the pro rata
     portion of Executive's target annual incentive bonus compensation for the
     calendar year in which the date of termination of employment occurs, under
     the incentive bonus compensation plan then maintained by Employer, that is
     applicable to the period commencing on the first day of such calendar year
     and ending on the date of termination. Such amount shall be paid to
     Executive in a lump sum within 180 days after his date of termination of
     employment; provided, however, Executive, by written notice to Employer,
     may elect to receive such payment on any date that is no earlier than the
     later to occur of (i) the date 10 days after the date of termination, and
     (ii) the date 10 days after receipt of such notice.

          (3) Executive shall receive any and all benefits accrued under any
     Retirement Plan, Welfare Plan or other plan or program in which he
     participates at the date of termination of employment, to the date of
     termination of employment, the amount, form and time of payment of such
     benefits to be determined by the terms of such Retirement Plan, Welfare
     Plan and other plan or program, and Executive's employment shall be deemed
     to have terminated by reason of retirement, and without regard to vesting
     limitations in all such Plans and other plans or programs not subject to
     the qualification requirements of Section 401 (a) of the Internal Revenue
     Code of 1986 as amended ("Code"), under circumstances that have the most
     favorable result for Executive thereunder for all purposes of such Plans
     and

                                       6
<PAGE>
 

     other plans or programs. Payment shall be made at the earliest date
     permitted under any such Plan or other plan or program that is not funded
     with a trust agreement.

          (4) (A) Employer shall pay to Executive a monthly Supplemental Pension
     Benefit in an amount equal to the amount determined pursuant to clause (i)
     below less the amount determined pursuant to clause (ii) below:

               (i) the aggregate monthly amount of the pension benefit
          ("Pension") that would have been payable to Executive under all
          Pension Plans if that Pension were computed (A) by treating the
          Severance Period as service for all purposes of the Pension Plans and
          (B) by considering his compensation during the Severance Period to be
          his Base Salary and one-twelfth of his Bonus for all purposes of the
          Pension Plans;

               (ii) the aggregate monthly amount of any Pension actually paid to
          Executive under all Pension Plans.

               (B) The Supplemental Pension Benefit payable to Executive
     hereunder shall be paid (i) commencing at the later to occur of the last
     day of the Severance Period or the date payment of his Pension commences
     under the Pension Plans; and (ii) in the same form as is applicable to the
     Pension payable to Executive under the Pension Plans.

               (C) If Executive dies prior to commencement of payment to him of
     his Pension under the Pension Plans, under circumstances in which a death
     benefit under the Pension Plans is payable to his surviving spouse or other
     beneficiary, then Employer shall pay a monthly Supplemental Death Benefit
     to Executive's surviving spouse or other beneficiary entitled to receive
     the death benefit payable with respect to Executive under the

                                       7
<PAGE>
 

     Pension Plans in an amount equal to the amount determined pursuant to
     clause (i) below less the amount determined pursuant to clause (ii) below:

               (i) the aggregate monthly amount of the death benefit that would
          have been payable to the surviving spouse or other beneficiary of
          Executive under the Pension Plans if that death benefit were computed
          (A) by treating the Severance Period as service for all purposes of
          the Pension Plans and (B) by considering his compensation during the
          Severance Period to be his Base Salary and one-twelfth of his Bonus
          for all purposes of the Pension Plans;

               (ii) the aggregate monthly amount of any death benefit actually
          paid to the surviving spouse or other beneficiary of Executive under
          the Pension Plans.

               (D) The Supplemental Death Benefit payable with respect to
     Executive hereunder shall be payable at the same time, in the same form,
     and to the same persons as is applicable to the death benefit payable with
     respect to Executive under the Pension Plans.

               (E) Notwithstanding the foregoing provisions, the total of the
     actual years of service of Executive for purposes of each of the Pension
     Plans and the years of service for which credit is given pursuant to
     subparagraphs (3)(A) and (C) shall not exceed the maximum number of years
     of service, if any, that can be considered pursuant to the terms of such
     Pension Plan.

               (F) Any actuarial adjustments made under the Pension Plans with
     respect to the form or time of payment of a Pension or death benefit to
     Executive or his surviving spouse or other beneficiary under the Pension
     Plans shall also be applicable to the

                                       8
<PAGE>
 

     Supplemental Pension Benefit or Supplemental Death Benefit payable
     hereunder and shall be based upon the same actuarial assumptions as those
     specified in the Pension Plans.

          (5) If upon the date of termination of Executive's employment
     Executive holds any options with respect to stock of Employer, all such
     options will immediately become exercisable upon such date and will be
     exercisable for 200 days thereafter. Any restrictions on stock of Employer
     owned by Executive on the date of termination of his employment will lapse
     on such date.

          (6) During the Severance Period Executive and his spouse and other
     dependents will continue to be covered by all Welfare Plans maintained by
     Employer in which he and his spouse and other dependents were participating
     immediately prior to the date of his termination as if he continued to be
     an employee of Employer and Employer will continue to pay the costs of
     coverage of Executive and his spouse and other dependents under such
     Welfare Plans on the same basis as is applicable to active employees
     covered thereunder; provided that, if participation in any one or more of
     such Welfare Plans is not possible under the terms thereof, Employer will
     provide substantially identical benefits. Coverage under any such Welfare
     Plan will cease if and when Executive obtains employment with another
     employer during the Severance Period, and becomes eligible for coverage
     under any substantially similar Welfare Plan provided by his new employer.

          (7) During the Severance Period, Executive shall not be entitled to
     reimbursement for fringe benefits, including without limitation, dues and
     expenses related to club memberships, automobile expenses, expenses for
     professional services and other similar perquisites.

                                       9
<PAGE>
 

     (b) If the employment of Executive with Employer is terminated by Employer
or Executive other than under circumstances set forth in subsection 3(a),
Executive's Base Salary shall be paid through the date of his termination, and
Employer shall have no further obligation to Executive or any other person under
this Agreement. Such termination shall have no effect upon Employee's other
rights, including but not limited to, rights under the Retirement Plans and the
Welfare Plans.

     (c) Notwithstanding anything herein to the contrary, (1) in the event
Employer shall terminate the employment of Executive for Good Cause hereunder,
Employer shall give Executive at least thirty (30) days prior written notice
specifying in detail the reason or reasons for Executive's termination, and (2)
in the event Executive terminates his employment for Good Reason hereunder,
Executive shall give Employer at least thirty (30) days prior written notice
specifying in detail the reason or reasons for Executive's termination.

     (d) This Agreement shall have no effect, and Employer shall have no
obligations hereunder, if Executive's employment terminates for any reason at
any time other than during the 24 months following a Change in Control.

     4. Excise Tax. (a) In the event that a Change in Control shall occur, and a
final determination is made by legislation, regulation, ruling directed to
Executive or Employer, by court decision, or by independent tax counsel
described in subsection (b) next below, that the aggregate amount of any payment
made to Executive (1) hereunder, and (2) pursuant to any plan, program or policy
of Employer in connection with, on account of, or as a result of, such Change in
Control ("Total Payments") will be subject to the excise tax provisions of
Section 4999 of the Code, or any successor section thereof, Executive shall be
entitled to receive from Employer, in addition to any

                                      10
<PAGE>
 

other amounts payable hereunder, a lump sum payment (the "Gross-Up Payment"),
sufficient to cover the full cost of such excise taxes and Executive's federal,
state and local income and employment taxes on this additional payment so that
the net amount retained by Executive, after the payment of all such excise taxes
on the Total Payments, and all federal, state and local income and employment
taxes and excise taxes on the Gross-Up Payment, shall be equal to the Total
Payments. The Total Payments, however, shall be subject to any federal, state
and local income and employment taxes thereon. For this purpose, Executive shall
be deemed to be in the highest marginal rate of federal, state and local taxes.
The Gross-Up Payment shall be made at the same time as the payments described in
subsections 3(a)(1) and (2) above.

     (b) Employer and Executive shall mutually and reasonably determine the
amount of the Gross-Up Payment to be made to Executive pursuant to the preceding
subsection. Prior to the making of any such Gross-Up Payment, either party may
request a determination as to the amount of such Gross-Up Payment. If such a
determination is requested, it shall be made promptly, at Employer's expense, by
independent tax counsel selected by Executive and approved by Employer (which
approval shall not unreasonably be withheld), and such determination shall be
conclusive and binding on the parties. Employer shall provide such information
as such counsel may reasonably request, and such counsel may engage accountants
or other experts at Employer's expense to the extent that they deem necessary or
advisable to enable them to reach a determination. The term "independent tax
counsel," as used herein, shall mean a law firm of recognized expertise in
federal income tax matters that has not previously advised or represented either
party. It is hereby agreed that neither Employer nor Executive shall engage any
such firm as counsel for any purpose, other

                                      11
<PAGE>
 

than to make the determination provided for herein, for three years following
such firm's announcement of its determination.

     (c) In the event the Internal Revenue Service subsequently adjusts the
excise tax computation made pursuant to subsections 4(a) and (b) above, Employer
shall pay to Executive, or Executive shall pay to Employer, as the case may be,
the full amount necessary to make either Executive or Employer whole had the
excise tax initially been computed as subsequently adjusted, including the
amount of any underpaid or overpaid excise tax, and any related interest and/or
penalties due to the Internal Revenue Service.

     5. Setoff. No payments or benefits payable to or with respect to Executive
pursuant to this Agreement shall be reduced by any amount Executive or his
spouse or Beneficiary, or any other beneficiary under the Pension Plans, may
earn or receive from employment with another employer or from any other source,
except as expressly provided in subsection 3(a)(6).

     6. Death. If Executive's employment with Employer terminates under
circumstances described in subsections 3(a) or (b), then upon Executive's
subsequent death, all unpaid amounts payable to Executive under subsections
3(a)(1), (2) or (3) or 3(b), or Section 4, if any, shall be paid to his
Beneficiary, all amounts payable under subsection 3(a)(4) shall be paid pursuant
to the terms of said subsection to his spouse or other beneficiary under the
Pension Plans, and if subsection 3(a) applies, his spouse and other dependents
shall continue to be covered under all applicable Welfare Plans during the
remainder of the Severance Period, if any, pursuant to subsection 3(a)(6).

     7. No Solicitation of Representatives and Employees. Executive agrees that
he shall not, during the Term or the Severance Period, directly or indirectly,
in his individual capacity or otherwise, induce, cause, persuade, or attempt to
do any of the foregoing in order to cause, any

                                      12
<PAGE>
 

representative, agent or employee of Employer or any of its Affiliates to
terminate such person's employment relationship with Employer or any of its
Affiliates, or to violate the terms of any agreement between said
representative, agent or employee and Employer or any of its Affiliates.

     8. Confidentiality. Executive acknowledges that preservation of a
continuing business relationship between Employer or its Affiliates and their
respective customers, representatives, and employees is of critical importance
to the continued business success of Employer and its Affiliates and that it is
the active policy of Employer and its Affiliates to guard as confidential
certain information not available to the public and relating to the business
affairs of Employer and its Affiliates. In view of the foregoing, Executive
agrees that he shall not during the Term and at any time thereafter, without the
prior written consent of Employer, disclose to any person or entity any such
confidential information that was obtained by Executive in the course of his
employment by Employer or any of its Affiliates. This section shall not be
applicable if and to the extent Executive is required to testify in a
legislative, judicial or regulatory proceeding pursuant to an order of Congress,
any state or local legislature, a judge, or an administrative law judge or is
otherwise required by law to disclose such information.

     9. Forfeiture. If Executive shall at any time violate any obligation of his
under Sections 7 or 8 in a manner that results in material damage to the
Employer or its business, he shall immediately forfeit his right to any benefits
under this Agreement, and Employer shall thereafter have no further obligation
hereunder to Executive or his spouse, Beneficiary or any other person.

     10. Executive Assignment. No interest of Executive, his spouse or any
Beneficiary, or any other beneficiary under the Pension Plans, under this
Agreement, or any right to receive any payment or distribution hereunder, shall
be subject in any manner to sale, transfer, assignment,

                                      13
<PAGE>
 

pledge, attachment, garnishment, or other alienation or encumbrance of any kind,
nor may such interest or right to receive a payment or distribution be taken,
voluntarily or involuntarily, for the satisfaction of the obligations or debts
of, or other claims against, Executive or his spouse, Beneficiary or other
beneficiary, including claims for alimony, support, separate maintenance, and
claims in bankruptcy proceedings.

     11. Benefits Unfunded. Except as otherwise provided in Section 13, all
rights under this Agreement of Executive and his spouse, Beneficiary or other
beneficiary under the Pension Plans, shall at all times be entirely unfunded,
and no provision shall at any time be made with respect to segregating any
assets of Employer for payment of any amounts due hereunder. None of Executive,
his spouse, Beneficiary or any other beneficiary under the Pension Plans shall
have any interest in or rights against any specific assets of Employer, and
Executive and his spouse, Beneficiary or other beneficiary shall have only the
rights of a general unsecured creditor of Employer. Except as otherwise provided
in Section 13, and notwithstanding the preceding provisions of this Section, the
Nominating and Compensation Committee of the Board of Directors of Employer, in
its discretion, shall have the right, at any time and from time to time, to
cause amounts payable to Executive or his Beneficiary hereunder to be paid to
the trustee of the NIPSCO Industries, Inc. Umbrella Trust For Management
established effective January 1, 1991, as amended from time to time, or any
similar trust at any time established by Employer ("Trust").

     12. Waiver. No waiver by any party at any time of any breach by the other
party of, or compliance with, any condition or provision of this Agreement to be
performed by such other party shall be deemed a waiver of any other provisions
or conditions at the same time or at any prior or subsequent time.

                                      14
<PAGE>
 

     13. Litigation Expenses. Employer shall pay Executive's reasonable
attorneys' fees and legal expenses in connection with any judicial proceeding to
enforce this Agreement, or to construe or determine the validity of this
Agreement or otherwise in connection therewith, whether or not Executive is
successful in such litigation. Within 10 days following the occurrence of a
Potential Change in Control (as defined in the Trust described in Section 11),
the Nominating and Compensation Committee of the Board of Directors of Employer
shall cause Employer to contribute the sum of $100,000 to the Trust to be
applied in satisfaction of Employer's obligations under this Section. The
Nominating and Compensation Committee shall cause Employer to contribute
additional amounts to the Trust, at such time or times as the Committee deems
appropriate, to the extent the aggregate of (1) the aforementioned sum of
$100,000, plus Trust earnings thereon, and (2) any additional Employer
contributions to the Trust, plus Trust earnings thereon, is not sufficient to
satisfy in full Employer's obligations under this Section.

     14. Applicable Law. This Agreement shall be construed and interpreted
pursuant to the laws of Indiana.

     15. Entire Agreement. This Agreement contains the entire Agreement between
the Employer and Executive and supersedes any and all previous agreements;
written or oral; between the parties relating to the subject matter hereof. No
amendment or modification of the terms of this Agreement shall be binding upon
the parties hereto unless reduced to writing and signed by Employer and
Executive.

     16. No Employment Contract. Nothing contained in this Agreement shall be
construed to be an employment contract between Executive and Employer.

                                      15
<PAGE>
 

     17. Counterparts. This Agreement may be executed in counterparts, each of
which shall be deemed an original.

     18. Severability. In the event any provision of this Agreement is held
illegal or invalid, the remaining provisions of this Agreement shall not be
affected thereby.

     19. Successors. This Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective heirs, representatives and
successors.

     20. Employment with an Affiliate. For purposes of this Agreement, (A)
employment or termination of employment of Executive shall mean employment or
termination of employment with Employer and all Affiliates, (B) Base Salary and
Bonus shall include remuneration received by Executive from Employer and all
Affiliates, and (C) the terms Pension Plan, Retirement Plan and Welfare Plan
maintained or made available by Employer shall include any such plans of any
Affiliate of Employer.

     21. Notice. Notices required under this Agreement shall be in writing and
sent by registered mail, return receipt requested, to the following addresses or
to such other address as the party being notified may have previously furnished
to the other party by written notice:

     If to Employer:     NIPSCO Industries, Inc.
                         5265 Hohman Avenue
                         Hammond, Indiana 46320

                         Attention: Gary L. Neale

     If to Executive:

                                      16
<PAGE>
 

     IN WITNESS WHEREOF, Executive has hereunto set his hand, and Employer has
caused these presents to be executed in its name on its behalf, all on the
________ day of _______________________________, 1997, effective September 1,
1997.

                                       NIPSCO Industries, Inc.


                                       By:
                                           --------------------------------

                                       Title: Chairman, President and
                                              Chief Executive Officer



                                       ------------------------------------ 
                                                             , Executive

                                       17
<PAGE>
 
              Schedule of Parties to Change of Control Agreements

     The following Industries' executives have entered into amended Change in 
Control and Termination Agreements with Industries: Gary L. Neal, Stephen P. 
Adik, Patrick J. Mulchay, Jeffrey W. Yundt, Joseph L. Turner, James K. Abcouwer,
John W. Dunn, William R. Elliott, Jerry L. Godwin, Barbara D. Haas, Owen C. 
Johnson, David A. Kelly, Mark T. Maassel and Robert J. Schacht. The contracts 
are substantially identical in all material respects except as to the parties, 
the execution dates and the amount of time following a change of control that 
the termination provisions of the agreement apply (from 7-24 months). In 
addition, Mr. Adik's and Mr. Neale's agreements provide that if a change of 
control occurs during the term of the agreement, they may terminate their 
employment within 24 months for any reason; and Mr. Neale's agreement provides 
that he will receive termination benefits during the term of the agreement 
(regardless of whether a change of control has occurred) if he is terminated for
any reason other than for good cause, if he terminates his employment for good 
reason or if his employment terminates due to death or disability.

<PAGE>

                                                                    EXHIBIT 10.5
 
                                FIRST AMENDMENT
                                       TO
                            NIPSCO INDUSTRIES, INC.
                   NONEMPLOYEE DIRECTOR STOCK INCENTIVE PLAN
                   -----------------------------------------

     WHEREAS, NIPSCO Industries, Inc. (the "Company") adopted the NIPSCO
Industries, Inc. Nonemployee Director Stock Incentive Plan ("Plan"), effective
February 1, 1992;

     WHEREAS, pursuant to Section 9.1, the Board of Directors of the Company may
amend the Plan; and

     WHEREAS, on December 16, 1997, the Board of Directors of the Company
authorized the proper officers of the Company to amend the Plan as described
below;

     NOW THEREFORE, the Plan is hereby amended as follows, effective as of
December 16, 1997:

     1.  Section 4.3 is amended to read as follows:

          4.3  Adjustments in Authorized Shares.  (i) Appropriate adjustments in
     the aggregate number of Shares issuable pursuant to the Plan, the number of
     Shares subject to each outstanding award granted under the Plan and the
     option price with respect to Options, shall be made to give effect to any
     increase or decrease in the number of issued Shares resulting from a
     subdivision or consolidation of shares, whether through recapitalization,
     stock split, reverse stock split, spin-off, spin-out or other distribution
     of assets to stockholders, stock distributions or combinations of shares,
     payment of stock dividends, other increase or decrease in the number of
     such Shares outstanding effected without receipt of consideration by the
     Company, or any other occurrence for which the Board determines an
     adjustment is appropriate.
<PAGE>
 
          (ii) In the event of any merger, consolidation or reorganization of
     the Company with any other corporation or corporations, or an acquisition
     by the Company of the stock or assets of any other corporation or
     corporations, there shall be substituted on an equitable basis, as
     determined by the Board in its sole discretion, for each Share then subject
     to the Plan, and for each Share then subject to an award granted under the
     Plan, the number and kind of shares of stock, other securities, cash or
     other property to which the holders of Shares of the Company are entitled
     pursuant to such transaction.

          (iii)  Without limiting the generality of the foregoing provisions of
     this paragraph, any such adjustment shall be deemed to have prevented any
     dilution or enlargement of a Participant's rights, if such Participant
     receives in any such adjustment, rights that are substantially similar
     (after taking into account the fact that the Participant has not paid the
     applicable option price) to the rights the Participant would have received
     had he exercised his outstanding award and become a shareholder of the
     Company immediately prior to the event giving rise to such adjustment.
     Adjustments under this paragraph shall be made by the Board, whose decision
     as to the amount and timing of any such adjustment shall be conclusive and
     binding on all persons.

                                       2

<PAGE>
 
     This First Amendment has been executed by the Company, by its duly
authorized officer, on this _______ day of ____________, 1998.

                                            NIPSCO Industries, Inc.


                                            By: 
                                               ______________________________

                                       3

<PAGE>

                                                                    EXHIBIT 10.7

 
     WHEREAS, the Company maintains the NIPSCO Industries, Inc. Long-Term
Incentive Plan ("Plan");

     WHEREAS, the Board of Directors of the Company deems it advisable to amend
the Plan to make certain changes to the Plan required by the Internal Revenue
Code of 1986 and Rule 16b-3 under the Securities Exchange Act of 1934, as
amended (the "1934 Act"), and to permit participants to direct the withholding
of common shares to pay taxes when due;

     WHEREAS, Section 20 of the Plan permits the Board to amend the Plan in
certain circumstances without shareholder approval and shareholder approval is
not required under the Exchange Act or otherwise.

     NOW, THEREFORE, BE IT RESOLVED, that Section 2 of the Plan be amended in
its entirety to read as follows:

     2.  Administration.  The Plan shall be administered by the Nominating and
Compensation Committee ("Committee") of the board of directors of the Company
("Board"). The Committee shall be composed of not fewer than two members of the
Board who are not employed by the Corporation. No member of the Committee may
exercise discretion with respect to, or participate in, the administration of
the Plan if, at any time, during the twelve-month period prior to such exercise
or participation, he or she has been granted or awarded stock, restricted stock,
stock options, stock appreciation rights or any other derivative security of the
Company or an affiliate thereof under this Plan or any similar plan of the
Company, except as permitted in Rule 16b-3(c)(2)(i)(A) through (D) under the
Securities Exchange Act of 1934, as amended (the "1934 Act"). Members of the
Committee shall be subject to any additional restrictions necessary to satisfy
the requirements for disinterested administration of the Plan as set forth in
Rule l6b-3, as it may be amended from time to time. If at any time any member of
the Committee does not satisfy such disinterested administration requirements,
no awards shall be made under this Plan to any person until such time as all
members of the Committee satisfy such requirements. Subject to the express
provisions of the Plan, the Committee may interpret the Plan, prescribe, amend
and rescind rules and regulations relating to it, determine the terms and
provisions of awards to officers and other key executive employees under the
Plan (which need not be identical) and make such other determinations as it
deems necessary or advisable for the administration of the Plan. The decisions
of the Committee under the Plan shall be conclusive and binding. No member of
the Board or the Committee shall be liable for any action taken, or
determination made, hereunder in good faith. Service on the Committee shall
constitute service as director of the Company so that members of the Committee
shall be entitled to indemnification and reimbursement as directors of the
Company pursuant to its by-laws.

     FURTHER RESOLVED, that the title of Section 7 be amended in its entirety to
read "NonQualified Stock Options."

     FURTHER RESOLVED, that Sections 7(c) and 8(c) of the Plan be amended in
their entirety to read as follows:


<PAGE>
 
          (c)  Payment for Shares.  Except as otherwise provided in the Plan or
     in any option agreement, the optionee shall pay the purchase price of the
     common shares upon exercise of any option (i) in cash, (ii) in cash
     received from a broker-dealer to whom the optionee has submitted an
     exercise notice consisting of a fully endorsed option (however, in the case
     of an optionee subject to Section 16 of the 1934 Act, this payment option
     shall only be available to the extent such insider complies with Regulation
     T issued by the Federal Reserve Board), (iii) by delivering common shares
     having an aggregate fair market value on the date of exercise equal to the
     option exercise price, (iv) by directing the Company to withhold such
     number of common shares otherwise issuable upon exercise of such option
     having an aggregate fair market value on the date of exercise equal to the
     option exercise price, (v) by such other medium of payment as the
     Committee, in its discretion, shall authorize at the time of grant, or (vi)
     by any combination of (i), (ii), (iii), (iv) and (v). In the case of an
     election pursuant to (i) or (ii) above, cash shall mean cash or a check
     issued by a federally insured bank or savings and loan, and made payable to
     NIPSCO Industries, Inc. In the case of payment pursuant to (ii), (iii) or
     (iv) above, the optionee's election must be made on or prior to the date of
     exercise and shall be irrevocable. In the case of an optionee who is
     subject to Section 16 of the 1934 Act and who elects payment pursuant to
     (iv) above, the election must be made in writing either (A) within ten (10)
     business days beginning on the third business day following release of the
     Company's quarterly or annual summary consolidated statements of earnings
     and ending on the twelfth business day following such date, or (B) at least
     six (6) months prior to the date of exercise of such option. In lieu of a
     separate election governing each exercise of an option, an optionee may
     file a blanket election with the Committee which shall govern all future
     exercises of options until revoked by the optionee. The Company shall
     issue, in the name of the optionee, stock certificates representing the
     total number of common shares issuable pursuant to the exercise of any
     option as soon as reasonably practicable after such exercise, provided that
     any common shares purchased by an optionee through a broker-dealer pursuant
     to clause (ii) above shall be delivered to such broker-dealer in accordance
     with 12 C.F.R. 220.3(e)(4) or other applicable provision of law.

     FURTHER RESOLVED, that a new Section 7(d) be hereby added to the Plan to
read in its entirety as follows:

          (d)  Transferability.  Each stock option agreement shall provide that
     it is not transferable by the optionee otherwise than by will or the laws
     of descent or distribution.

     FURTHER RESOLVED, that present Section 7(d) of the Plan be renumbered as
Section 7(e) and that renumbered Section 7(e) shall be amended to add the
following to the end thereof:

     For purposes of this Plan, the term "disability" shall mean the inability
     of an individual to engage in any substantial gainful activity by reason of
     any medically determinable physical or mental impairment which is expected
     to result in death or which has lasted or can be expected to last for a
     continuous period of not less than twelve (12) months. The Committee,


                                       2

<PAGE>
 
     in its sole discretion, shall determine the date of any disability. The
     term "retirement" shall mean retirement as defined in the Company's pension
     plan.

     FURTHER RESOLVED, that the following shall be added to the beginning of the
first sentence of Section 8(a) of the Plan:

     Except as provided in Section 8(b),

     FURTHER RESOLVED, that Section 8(b) of the Plan be amended in its entirety
to read as follows:

          (b)  Exercise of Option.  Each stock option agreement shall state the
     period or periods of time within which the option may be exercised by the
     optionee, in whole or in part, which shall be such period or periods of
     time as may be determined by the Committee, provided that the option period
     shall not commence earlier than six months after the date of the grant of
     the option nor end later than ten years after the date of the grant of the
     option. The aggregate fair market value (determined with respect to each
     incentive stock option at the time of grant) of the common shares with
     respect to which incentive stock options are exercisable for the first time
     by an individual during any calendar year (under all incentive stock option
     plans of the Company and its parent and subsidiary corporations) shall not
     exceed $100,000. If the aggregate fair market value (determined at the time
     of grant) of the common shares subject to an option, which first becomes
     exercisable in any calendar year exceeds the limitation of this Section
     8(b), 50 much of the option that does not exceed the applicable dollar
     limit shall be an incentive stock option and the remainder shall be a
     nonqualified stock option; but in all other respects, the original option
     agreement shall remain in full force and effect. As used in this Section 8,
     the words "parent" and "subsidiary" shall have the meanings given to them
     in Section 425(e) and 425(f) of the Internal Revenue Code. Notwithstanding
     anything herein to the contrary, if an incentive stock option is granted to
     an individual who owns stock possessing more than ten percent (10%) of the
     total combined voting power of all classes of stock of the Company or of
     its parent or subsidiary corporations, within the meaning of Section
     422(b)(6) of the Internal Revenue Code, (i) the purchase price of each
     common share subject to the incentive stock option shall be not less than
     one hundred ten percent (110%) of the fair market value of the common
     shares on the date the incentive stock option is granted, and (ii) the
     incentive stock option shall expire and all rights to purchase shares
     thereunder shall cease no later than the fifth anniversary of the date the
     incentive stock option was granted.

     FURTHER RESOLVED, that Section 8(e) is hereby amended by deleting the
reference therein to Section 422A and substituting in lieu thereof Section 422.

     FURTHER RESOLVED, that Section 9(c) of the Plan is hereby amended by adding
the following to the end thereof:

          (c)  Payment for Stock Appreciation Rights.  Except as otherwise
     provided in the


                                       3

<PAGE>
 
     Plan or in any stock appreciation right agreement, the grantee shall pay
     the purchase price of the common shares upon exercise of a stock
     appreciation right (i) in cash, (ii) by delivering common shares having an
     aggregate fair market value on the date of exercise equal to the stock
     appreciation exercise right price, (iii) by directing the Company to
     withhold such number of common shares otherwise issuable upon exercise of
     such stock appreciation right having an aggregate fair market value on the
     date of exercise equal to the stock appreciation right exercise price, (iv)
     by such other medium of payment as a Committee, in its discretion, shall
     authorize at the time of grant, or (v) by any combination of (i), (ii),
     (iii) and (iv). In the case of an election pursuant to (i) above, cash will
     mean cash or a check issued by a federally insured bank or savings and
     loan, and made payable to NIPSCO Industries, Inc. In the case of payment
     pursuant to (ii) and (iii) above, the grantee's election must be made on or
     prior to the date of exercise and shall be irrevocable. In the case of a
     grantee who is subject to Section 16 of the 1934 A c t and who elects
     payment pursuant to (iii) above, the election must be made in writing
     either (A) within the ten (10) business days beginning on the third bus
     ness day following release of the Company's quarterly or annual summary
     consolidated statements of earnings and ending on the twelfth business day
     following such day, or (B) at least six (6) months prior to the date of
     exercise of such stock appreciation right. In lieu of a separate election
     governing each exercise of a stock appreciation right, a grantee may file a
     blanket election with the Committee which shall govern all future exercises
     of stock appreciation rights until revoked by the grantee. Notwithstanding
     the foregoing, in the case of a grantee of a stock appreciation right who
     is subject to Section 16 of the 1934 Act, the Company's right to elect to
     settle any part or all of its obligation arising out of the exercise of 6
     stock appreciation right by the payment of cash or by check shall not apply
     unless such exercise occurs no/less than six months after the date of grant
     of the stock appreciation right and during the period beginning on the
     third business day following the date of release for publication of the
     Company's quarterly or annual summary consolidated statements of earnings
     and ending on the twelfth business day following such day.

     FURTHER RESOLVED, that Section 10(e) of the Plan be amended in its entirety
to read as follows:

          (e)  Payment of Units.  Following the conclusion of each performance
     period, the Committee shall determine the extent to which performance
     targets have been attained for such period as well as the other terms and
     conditions established by the Committee. The Committee shall determine
     what, if any, payment is due on the Units. Except as otherwise provided in
     the Plan or in any performance unit agreement, payment, if any, shall be
     made (i) in cash, (ii) by delivering common shares having an aggregate air
     market value on the date of payment equal to the payment, (iii) by
     directing the Company to withhold such number of common shares otherwise
     issuable u on conclusion of each performance period, having an aggregate
     fair market value on the date of payment equal to the payment, (iv) by such
     other medium of payment a the Committee, in its discretion, shall authorize
     at the time of award, or (v) by any combination of the foregoing. Cash will
     mean cash or a check issued


                                       4

<PAGE>
 
     by a federally insured bank or savings and loan, and made pa able to NIPSCO
     Industries, Inc. In the case of payment pursuant to (ii) and (iii) above,
     the election mus be made on or prior to the date of payment and shall be
     irrevocable. In the case of a person who is subject to Section 16 of the
     1934 Act and who elects payment pursuant to (iii) above, the election must
     b made in writing either (A) within the ten (10) business days beginning on
     the third business day following release of the Company's quarterly or
     annual summary consolidated statements of earnings and ending on the
     twelfth business day following such day, or (B) at lea six months prior to
     the date of payment. In lieu of a separate election governing each payment
     for a performance unit, a blanket election may be filed with the Committee
     which shall govern all future payments of performance units until revoked.

     FURTHER RESOLVED, that Section 11(e) of the Plan be amended in its entirety
to read as follows:

          (e)  Termination Prior to Lapse of Restrictions.  In the event of a
     participant's termination of employment, other than due to death or
     retirement, prior to the lapse of restrictions applicable to any shares
     awarded to such participant, all shares as to which there still remains
     unlapsed restrictions shall be forfeited by such participant without
     payment of any consideration to the participant, and neither the
     participant nor any successors, heirs, assigns, or personal representatives
     of such participant shall thereafter have any further rights or interest in
     such shares or certificates.

     FURTHER RESOLVED, that Section 16 of the Plan be amended in its entirety to
read as follows:

          16.  Withholding.  Whenever the Company proposes or is required to
     issue or transfer common shares to a participant under the Plan, the
     Company shall have the right to require the participant to remit to the
     Company an amount sufficient to satisfy all federal, state and local
     withholding tax requirements prior to the delivery of any certificate or
     certificates for such shares. If such certificates have been delivered
     prior to the time a withholding obligation arises, the Company shall have
     the right to require the participant to remit to the Company an amount
     sufficient to satisfy all federal, state or local withholding tax
     requirements at the time such obligation arises and to withhold from other
     amounts payable to the participant, as compensation or otherwise, as
     necessary. Whenever payments under the Plan are to be made to a participant
     in cash, such payments shall be net of any amounts sufficient to satisfy
     all federal, state and local withholding tax requirements. In lieu of
     requiring a participant to make a payment to the Company in an amount
     related to the withholding tax requirement, the Committee may, in its
     discretion, provide that at the participant's election, the tax withholding
     obligation shall be satisfied by the Company's withholding a portion of the
     shares otherwise distributable to the participant, such shares being valued
     at their fair market value at the date of exercise, or by the participant's
     delivering to the Company a portion of the shares previously delivered by
     the Company, such shares being valued at their fair market value as of the
     date of delivery of such shares


                                       5

<PAGE>
 
     by the participant to the Company. For this purpose, the amount of required
     withholding shall be a specified rate not less than the statutory minimum
     federal and state withholding rate and not greater than the maximum
     federal, state and local (if any) marginal tax rate applicable to the
     participant and to the particular transaction. Notwithstanding any
     provision of the Plan to the contrary, a participant's election pursuant to
     the preceding sentences (a) must be made on or prior to the date as of
     which income is realized by the recipient in connection with the particular
     exercise transaction, (b) must be irrevocable, and (c) if the election is
     made by a participant who is subject to Section 16 of the 1934 Act, must be
     made in writing either (A) within ten (10) business days beginning on the
     third business day following the release of the Company's quarterly or
     annual summary consolidated statements of earnings and ending on the
     twelfth business day following such day, or (B) at least six (6) months
     prior to the effective date of the particular exercise transaction. In lieu
     of a separate election on each effective date of each exercise transaction,
     a participant may file a blanket election with the Committee which shall
     govern all future exercise transactions until revoked by the participant.

     FURTHER RESOLVED, that Section 20 of the Plan be amended in its entirety to
read as follows:

          20.  Amendment or Termination.  The Board or the Committee may at any
     time terminate, suspend or modify the Plan without the authorization of
     stockholders to the extent allowed by law, including without limitation any
     rules issued by the Securities and Exchange Commission under Section 16 of
     the 1934 Act, insofar as shareholder approval thereof is required in order
     for the Plan to continue to satisfy the requirements of Rule 16b-3 under
     the 1934 Act. No termination, suspension or modification of the Plan shall
     adversely affect any right acquired by any participant under an award
     granted before the date of such termination, suspension or modification,
     unless such participant shall consent; but it shall be conclusively
     presumed that any adjustment for changes in capitalization as provided for
     herein does not adversely affect any such right. Any member of the Board
     who is an officer or employee of the Company shall be without a vote on any
     proposed amendment to the Plan, or on any other matter which might affect
     that member's individual interest under the Plan.


                                       6


<PAGE>

                                                                    EXHIBIT 10.8
 
                                SECOND AMENDMENT
                                       TO
                            NIPSCO INDUSTRIES, INC.
                         1988 LONG-TERM INCENTIVE PLAN
                         -----------------------------


     WHEREAS, NIPSCO Industries, Inc. (the "Company") adopted the NIPSCO
Industries, Inc. 1988 Long-Term Incentive Plan, as amended effective August 24,
1993 ("Plan");

     WHEREAS, pursuant to Section 20, the Board of Directors of the Company may
amend the Plan; and

     WHEREAS, on December 16, 1997, the Board of Directors of the Company
authorized the proper officers of the Company to further amend the Plan as
described below;

     NOW THEREFORE, the Plan is hereby amended as follows, effective as of
December 16, 1997:

     1.  Section 19 is amended to read as follows:

          19.  Adjustments.  (i)  Appropriate adjustments in the aggregate
     number of common shares issuable pursuant to the Plan, the number of common
     shares subject to each outstanding award granted under the Plan, the option
     price with respect to options and connected stock appreciation rights, the
     specified price of stock appreciation rights not connected to options, and
     the value for Units, shall be made to give effect to any increase or
     decrease in the number of issued common shares resulting from a subdivision
     or consolidation of shares, whether through recapitalization, stock split,
     reverse stock split, spin-off, spin-out or other distribution of assets to
     stockholders, stock distributions or combinations of shares, payment of
     stock dividends, other increase or decrease in the number of such common
     shares outstanding effected without receipt of consideration by the
<PAGE>
 
     Company, or any other occurrence for which the Committee determines an
     adjustment is appropriate.

          (ii) In the event of any merger, consolidation or reorganization of
     the Company with any other corporation or corporations, or an acquisition
     by the Company of the stock or assets of any other corporation or
     corporations, there shall be substituted on an equitable basis, as
     determined by the Committee in its sole discretion, for each common share
     then subject to the Plan, and for each common share then subject to an
     award granted under the Plan, the number and kind of shares of stock, other
     securities, cash or other property to which the holders of common shares of
     the Company are entitled pursuant to such transaction.

          (iii)  Without limiting the generality of the foregoing provisions of
     this paragraph, any such adjustment shall be deemed to have prevented any
     dilution or enlargement of a participant's rights, if such participant
     receives in any such adjustment, rights that are substantially similar
     (after taking into account the fact that the participant has not paid the
     applicable option price) to the rights the participant would have received
     had he exercised his outstanding award and become a shareholder of the
     Company immediately prior to the event giving rise to such adjustment.
     Adjustments under this paragraph shall be made by the Committee, whose
     decision as to the amount and timing of any such adjustment shall be
     conclusive and binding on all persons.

                                       2
<PAGE>
 
     This Second Amendment has been executed by the Company, by its duly
authorized officer, on this ______ day of __________________, 1998.

                                    NIPSCO Industries, Inc.



                                    By:
                                       _____________________________


                                       3

<PAGE>

                                                                   EXHIBIT 10.11
 
                                FIRST AMENDMENT
                                       TO
                            NIPSCO INDUSTRIES, INC.
                         1994 LONG-TERM INCENTIVE PLAN
                         -----------------------------


     WHEREAS, NIPSCO Industries, Inc. (the "Company") adopted the NIPSCO
Industries, Inc. 1994 Long-Term Incentive Plan ("Plan"), effective April 13,
1994; and

     WHEREAS, pursuant to Section 18, the Board of Directors of the Company may
amend the Plan; and

     WHEREAS, on December 16, 1997, the Board of Directors of the Company
authorized the proper officers of the Company to amend the Plan as described
below;

     NOW THEREFORE, the Plan is hereby amended as follows, effective as of
December 16, 1997:

     1.  Section 3(b) is amended to read as follows:

          (b)  (i)  Appropriate adjustments in the aggregate number of Common
     Shares issuable pursuant to the Plan, the number of Common Shares subject
     to each outstanding award granted under the Plan, the option price with
     respect to options and connected stock appreciation rights, the specified
     price of stock appreciation rights not connected to options, and the value
     for Units, shall be made to give effect to any increase or decrease in the
     number of issued Common Shares resulting from a subdivision or
     consolidation of shares, whether through recapitalization, stock split,
     reverse stock split, spin-off, spin-out or other distribution of assets to
     stockholders, stock distributions or combinations of shares, payment of
     stock dividends, other increase or decrease in the number of such Common
     Shares 
<PAGE>
 
     outstanding effected without receipt of consideration by the Company, or
     any other occurrence for which the Committee determines an adjustment is
     appropriate.

          (ii) In the event of any merger, consolidation or reorganization of
     the Company with any other corporation or corporations, or an acquisition
     by the Company of the stock or assets of any other corporation or
     corporations, there shall be substituted on an equitable basis, as
     determined by the Committee in its sole discretion, for each Common Share
     then subject to the Plan, and for each Common Share then subject to an
     award granted under the Plan, the number and kind of shares of stock, other
     securities, cash or other property to which the holders of Common Shares of
     the Company are entitled pursuant to such transaction.

          (iii)  Without limiting the generality of the foregoing provisions of
     this paragraph, any such adjustment shall be deemed to have prevented any
     dilution or enlargement of a participant's rights, if such participant
     receives in any such adjustment, rights that are substantially similar
     (after taking into account the fact that the participant has not paid the
     applicable option price) to the rights the participant would have received
     had he exercised his outstanding award and become a shareholder of the
     Company immediately prior to the event giving rise to such adjustment.
     Adjustments under this paragraph shall be made by the Committee, whose
     decision as to the amount and timing of any such adjustment shall be
     conclusive and binding on all persons.

                                       2
<PAGE>
 
     This First Amendment has been executed by the Company, by its duly
authorized officer, on this ______ day of _________________, 1998.

                                                    NIPSCO Industries, Inc.


                                                    By:
                                                       ________________________

                                       3

<PAGE>
                                                                   Exhibit 10.13

                              EMPLOYMENT AGREEMENT
                              --------------------

     THIS AGREEMENT is made as of this 25th day of March, 1997 by and between
SPEEDWAY ACQUISITION CORP., an Indiana corporation ("Company"), and James T.
Morris ("Executive").

                                    RECITALS
                                        
     1.   Pursuant to the Agreement and Plan of Merger dated as of December 19,
1996 ("Merger Agreement") by and among NIPSCO Industries, Inc. ("NIPSCO"), the
Company and IWC Resources Corporation, an Indiana corporation ("IWC"), IWC
intends to merge with and into the Company ("Merger"), as a result of which IWC
will become a wholly owned subsidiary of NIPSCO.

     2.   Executive is the Chairman, President and Chief Executive Officer of
IWC.

     3.   The Company and Executive desire to enter into arrangements to provide
for the continuation of Executive's employment in his current capacity following
consummation of the Merger.

     NOW THEREFORE, in consideration of the mutual covenants and promises
herein, and other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the Company and Executive, each intending to
be legally bound, agree as follows:

                                   1.  TERM
                                       ----

     The term of employment ("Term") shall commence as of the date of this
Agreement and shall expire on the third anniversary thereof, unless sooner
terminated as set forth in Section 5 below.

                                  2.  DUTIES
                                      ------

     Upon the terms and subject to the conditions set forth in this Agreement,
the Company agrees to employ Executive as Chairman, President and Chief
Executive Officer of the Company.  Executive agrees to serve as Chairman,
President and Chief Executive Officer of the Company and to perform such duties
in and consistent with that office as may reasonably be assigned to him by the
Company's Board of Directors.

     Executive agrees to devote his full time, energy and skill to the business
of the Company except for periods of vacation and absences made necessary
because of illness, authorized leaves of absence and holidays and to promote the
Company's best interests during the Term.  Executive further agrees not to work
for any other employer as an employee during the Term.  The Company acknowledges
that it is and has long been IWC's policy to encourage its employees, including
its officers, to participate, to a material extent, in civic, charitable,
community and political activities, and the Company agrees that continued
participation by Executive in such activities on a basis and to an extent
consistent with his prior participation is consistent with his obligations under
this Agreement.

                         3.  COMPENSATION AND BENEFITS
                             -------------------------

     During the Term, Executive shall be entitled to receive compensation and
benefits as follows:

                                       1
<PAGE>
 
     (a)  Base Compensation.  Executive shall receive Base Compensation from the
Company at an annual rate of $360,535.   Executive acknowledges that, in
connection with the Merger, he has already received the Base Compensation
payable through December 31, 1997 and, accordingly, no additional Base
Compensation will accrue after the date hereof until January 1, 1998.
Executive's Base Compensation may be reviewed at least annually and as a result
of such review, may be increased but may not be decreased.

     (b)  Performance Incentive Bonus Pool.  Executive shall be entitled to
participate in a Performance Incentive Bonus Pool ("Pool") for each fiscal year
of the Company during the Term for which the Company's consolidated net income
(after tax), determined in accordance with generally accepted accounting
principles, exceeds by more than $2,000,000 the following amounts, respectively:
for the period between March 26, 1997 through December 31,1997: $11,871,450;
fiscal 1998: $19,798,700, and fiscal 1999: $21,674,900.  In the event any
subsidiary of the Company is sold or otherwise disposed of during any such
fiscal year, the above amounts shall be appropriately adjusted for such year and
subsequent years to eliminate the budgeted contribution of such subsidiary to
Company's consolidated net income.  The amount of the Pool shall be equal to 20%
of such excess.  Executive's share of the Pool shall be 38%. Any bonus payable
from the Pool shall be payable in a lump sum within 90 days after the end of the
fiscal year for which the bonus is earned.  Executive must be employed by the
Company during the entire fiscal year to be eligible for participation in the
Pool for that year.

     (c)  Acquisition Bonus.  Executive shall be entitled to participate in an
Acquisition Bonus Pool for each Acquisition (defined as the acquisition by the
Company of  all of the common equity securities or assets of an unrelated
company or an "applicable asset acquisition" as such term is defined in Section
1060 of the Internal Revenue Code of 1986, as amended ("Code")) during the Term,
provided that Executive is employed by the Company at the time of the closing of
the applicable Acquisition (unless such closing occurs after the Term or after
the death or disability of Executive, in which case Executive must have been
employed by the Company at the time the Company executed a definitive agreement
relating to the Acquisition).  For each Acquisition involving an Acquisition
Price (defined as the aggregate dollar value of the cash and the fair market
value of the non-cash consideration paid for the Acquisition) of at least $10
million and not more than $100 million, the amount of the Acquisition Bonus Pool
shall be equal to 1% of the Acquisition Price.  If the Acquisition Price exceeds
$100 million, the amount of the Acquisition Bonus Pool shall be equal to the sum
of: (i) 1% of the first $100 million of the Acquisition Price; (ii) .875% of the
Acquisition Price above $100 million up to $200 million; (iii) .75% of the
Acquisition Price above $200 million up to $300 million; (iv) .625% of the
Acquisition Price above $300 million up to $400 million; and (v) .5% of the
Acquisition Price above $400 million.  Executive's share of the Acquisition
Bonus shall be 38%.  Awards from the Acquisition Bonus shall be paid in a lump
sum within 30 days after the closing of the applicable Acquisition.

     (d)  Deferred Compensation.  In lieu of contribution to any pension plan,
Executive shall be eligible to receive deferred compensation in the amount that
NIPSCO would have contributed to NIPSCO's defined benefit pension plan with
respect to the Term had Executive been a participant in such plan which shall be
payable in full in a lump sum payment upon the termination of the Agreement.

     (e)  Additional Benefits.  During the Term and thereafter, Executive and
his dependents shall be entitled to participate in any health plan, disability
plan and life insurance plan or arrangement then made available by the Company
to its senior executives generally during the Term or subsequent thereto,
subject to and on a basis consistent with the terms, conditions and overall
administration of such plans and arrangements and the Company's practices with
respect to such plans. During the Term, Executive shall also be entitled to all
miscellaneous fringe benefits and perquisites provided to him or for his benefit
during the twelve months preceding the date hereof.

                                       2
<PAGE>
 
     (f)  Vacation.  Upon commencement of the Term, Executive shall be granted
an annual vacation of six weeks during each year of employment. Vacation cannot
be carried over from one year to the next. Such vacations shall be taken at
times mutually convenient to the Company and Executive.

                          4.  ADDITIONAL COMPENSATION
                              -----------------------

     Executive is entitled to receive additional compensation pursuant to
Section 4.15 of the Merger Agreement.  The Company and Executive agree that the
compensation provided in this Section 4 and the Noncompetition Agreement by and
between the Company and Executive dated the date hereof ("Noncompetition
Agreement") is in lieu of any payment described in Section 4.15 of the Merger
Agreement and that Executive shall be entitled to no payments pursuant to
Section 4.15 of the Merger Agreement other than the compensation described in
this Section 4 and the Noncompetition Agreement.  Executive shall be entitled to
receive such payments as follows:

     (a)  Completion Bonus.  Executive shall be entitled to receive a Completion
Bonus. The Company shall pay Executive the Completion Bonus plus accrued
interest thereon in the amounts and on the dates set forth on Schedule 4(a)
attached hereto and made a part of this Agreement which sets forth the total
payment to be made to Executive pursuant to this Section 4(a).  If Executive
dies prior to the payment by the Company of all of the amounts set forth on
Schedule 4(a) and  Executive has a surviving spouse, at the option of
Executive's surviving spouse, the Company shall either (i) pay to Executive's
surviving spouse in a lump sum the amount set forth on Schedule 4(a) as the
Remaining Principal which corresponds to the date of the calendar quarter during
which Executive died or (ii) continue to pay to Executive's surviving spouse the
Completion Bonus plus accrued interest thereon in the amounts and on the dates
set forth on Schedule 4(a).  If Executive dies prior to the payment by the
Company of all of the amounts set forth on Schedule 4(a) and Executive does not
have a surviving spouse, the Company shall pay to Executive's Beneficiary (as
defined below) in a lump sum the amount set forth on Schedule 4(a) as the
Remaining Principal which corresponds to the date of the calendar quarter during
which Executive died.

     (b)  Performance Incentive Bonus.  Unless Executive is terminated for cause
(as defined below) during the Term or dies prior to January 1, 1998, Executive
shall be entitled to receive an annual Performance Incentive Bonus (for any one
year or multiple years, "Bonus") equal to 1% of NIPSCO's consolidated earnings
before interest, taxes, depreciation and amortization ("EBITDA") for each of
fiscal years 1997, 1998 and 1999.  The maximum amount of the Bonus payable to
Executive for the entire three-year period (without regard to interest) shall be
$1,299,680 ("Maximum Amount").  The Company shall pay Executive the Bonus in the
amounts and on the dates set forth on Schedule 4(b) attached hereto and made a
part of this Agreement which sets forth the total payments to which Executive is
entitled pursuant to this Section 4(b). The payments set forth on  Schedule 4(b)
are based on the following assumptions: (i) that the Maximum Amount will be
earned during 1997; (ii) that the Bonus will include interest at an annual rate
of 10% from the beginning of 1997 until December 31, 1999; and (iii) that the
Bonus plus any accrued interest thereon as of December 31, 1999 will include
interest at an annual rate of 8.6% from January 1, 2000 until April 30, 2008.
The payments set forth on Schedule 4(b) will be modified, consistent with the
foregoing assumptions, in the event that: (i) Executive is terminated for cause
during the Term, in which case, Executive shall not be entitled to any Bonus for
or based on the fiscal year during which such termination occurs or any
subsequent fiscal years; (ii) Executive dies during 1997, in which case,
Executive shall be entitled to a Bonus based on NIPSCO's EBITDA for 1997
prorated on a monthly basis through the end of the month in which Executive
died; or (iii) Executive does not earn the Maximum Amount in 1997, in which
case, the payments set forth on Schedule 4(b) shall be adjusted to reflect the
amount of the Bonus earned and the years in which the Bonus was actually earned.
If Executive dies prior to the payment by the Company of all of the amounts set
forth on Schedule 4(b) and  Executive has a surviving spouse, at the option of
Executive's surviving spouse, the Company shall either (i) pay to Executive's
surviving spouse in a lump

                                       3
<PAGE>
 

sum the amount set forth on Schedule 4(b) as the Remaining Principal which
corresponds to the date of the calendar quarter during which Executive died or
(ii) continue to pay to Executive's surviving spouse the Bonus plus accrued
interest thereon in the amounts and on the dates set forth on Schedule 4(b). If
Executive dies prior to the payment by the Company of all of the amounts set
forth on Schedule 4(b) and Executive does not have a surviving spouse, the
Company shall pay to Executive's Beneficiary in a lump sum the amount set forth
on Schedule 4(b) as the Remaining Principal which corresponds to the date of the
calendar quarter during which Executive died.

     (c)  Gross-Up Payments. If Executive is subject to an excise tax under
Section 4999 of the Code as a result of payments made in connection with this
Agreement and/or the Noncompetition Agreement, the Company will make an
additional payment or payments ("Gross-Up Payment") in such amount as shall be
necessary to reimburse Executive for such excise tax and for all excise and
income taxes on the Gross-Up Payment, provided that the maximum Gross-Up Payment
to Executive shall not exceed $2,400,000, unless the Company is instructed to
the contrary in writing by Executive and by Joseph R. Broyles, J. A. Rosenfeld,
Kenneth N. Giffin and John M. Davis or their designees. In no event, however,
shall the obligations of the Company under this Section 4(c) exceed the
difference between $6,000,000 and any amounts paid at any time to Joseph R.
Broyles, J. A. Rosenfeld, Kenneth N. Giffin and John M. Davis under Employment
Agreements and Noncompetition Agreements between the Company and each of them by
reason of any provision in such agreements similar to or intended to serve the
same purpose as this Section 4(c).

     (d)  Contests.

          1.  Notice of Contest. If Executive obtains a formal written notice of
a proposed adjustment by the Internal Revenue Service that, if sustained, would
result in an excise tax imposed on Executive for which the Company could be
required to indemnify Executive hereunder ("Claim"), Executive agrees to notify
the Company immediately in writing of such Claim; provided however, that the
failure so to notify the Company shall not affect the Company's liability
hereunder except to the extent that Executive actually received a written
proposed adjustment and such failure precludes the Company's ability to contest
such Claim.

          2.  Conditions to Contest. At the request of the Company, Executive
shall contest the validity of any Claim in good faith if the Company has agreed
in writing to pay Executive all fees and expenses that Executive shall incur in
connection with contesting the Claim, including, without limitation, attorneys',
accountants' and investigatory fees and disbursements.

          3.  Initiation of Contest and Choice of Forum. At the sole option of
the Company, Executive may pursue or forego any administrative proceedings and
either pay the tax proposed and sue for a refund or contest the Claim in any
permissible forum. If the Company shall determine to pay the tax proposed and
have Executive sue for a refund, the Company shall advance to Executive on
demand on an interest-free basis and with no additional net after-tax cost to
Executive sufficient funds to pay the tax and interest, penalties and additions
to tax payable with respect thereto ("Deposit").

          4.  Conduct of Contest and Appeals. In connection with any Claim, the
Company shall maintain full control over any such litigation and shall consult
in good faith with Executive regarding the conduct of such contest. After formal
written notification of a Claim which the Company is contesting, the Company (i)
shall keep Executive fully informed with respect to any contest and (ii) shall
consult in good faith with Executive as to all material decisions relevant to
any audit or contest. Executive shall be required to appeal any adverse judicial
determination with respect to a Claim.

                                       4
<PAGE>
 

     5.  Determination by the Executive Not to Contest a Claim.  Nothing
contained in this Section 4(d) shall require Executive to contest a Claim that
it would otherwise be required to contest pursuant to this Section 4(d) if
Executive (i) waives in writing the payment by the Company of any amount that
might otherwise be payable by the Company under this Agreement by way of
indemnity in respect of such Claim and (ii) pays to the Company any amount
previously paid or advanced by the Company pursuant to this Agreement with
respect to such Claim or the contest of such Claim (other than amounts described
in Section 4(d)(2)).

     6.  Final Determination and Payment of Amounts. If the Company shall have
requested Executive to contest a Claim as provided in Section 4(d) and shall
have duly complied with all the terms of this Section 4(d), the Company's
liability for payment under this Agreement shall be deferred until a Final
Determination (as defined below) of the Claim. At such time, the Company shall
become obligated for the payment of any indemnification under this Agreement
resulting from the outcome of such contest, and Executive shall become obligated
to refund to the Company any amount received as a refund by Executive that is
fairly attributable to advances or indemnity payments made by the Company under
this Agreement, together with any interest received by Executive on such refund.

     For purposes of the Agreement, the term "Final Determination" with respect
to an excise tax asserted to be imposed on Executive shall mean (i) a decision,
judgment, decree or other order by any court of competent jurisdiction, which
decision, judgment, decree or order has become final (i.e., when all appeals
allowable by law and hereby have been exhausted by either party to the action);
(ii) a closing agreement entered into under Section 7121 of the Code or any
other settlement agreement entered into in connection with an administrative or
judicial proceeding which precludes further action by either party; or (iii) the
expiration of the time for instituting a claim for refund, or if such a claim
was filed, the expiration of the time for instituting suit with respect thereto.

                         5.  TERMINATION OF EMPLOYMENT

     (a)  Termination for Cause. The Company shall have the right to terminate
Executive's employment with the Company for cause. For purposes of this
Agreement, "cause" shall mean the following: (i) Executive's engagement, during
the performance of Executive's duties hereunder, in acts or omissions
constituting dishonesty, fraud, intentional breach of fiduciary obligation or
intentional wrongdoing or malfeasance; (ii) Executive's conviction of a felony
violation involving fraud or dishonesty; (iii) Executive's violation or breach
of any material provision of this Agreement or the Noncompetition Agreement and
the continuation thereof after the receipt by Executive of written notice from
the Company; or (iv) Executive's unreasonable failure or refusal to perform his
duties as the Company reasonably requires or to abide by the Company's policies
for the operation of its business and the continuation thereof after the receipt
by Executive of written notice from the Company.

     (b)  Termination by Executive. Executive shall have the right, at any time
during the term of this Agreement, and for any reason, to terminate his
employment with the Company upon giving 30-days' written Notice of Termination
as set forth below to the Company.

     (c)  Compensation in the Event of Termination for Cause or by Executive. If
Executive's employment with the Company is terminated by the Company for cause,
or if Executive's employment with the Company is terminated by Executive, then
(i) the Base Compensation provided for in Section 3 shall cease to accrue as of
the date of termination of Executive's employment with the Company ("Termination
Date") specified in the Notice of Termination as set forth below; (ii) the
Company shall pay to Executive any compensation payable in the amount, at the
time and in the manner set forth in Sections 3 and 4 and specifically shall pay
the Bonus described in Section 4(b) plus any accrued interest thereon if
termination

                                       5
<PAGE>
 

is other than for cause; and (iii) Executive and his dependents shall cease to
participate in the benefit plans and programs, as provided for in Section 3, as
of the Termination Date specified in the Notice of Termination. Any benefits
payable under insurance or health plans as a result of Executive's participation
in such plans through the Termination Date shall be paid when due under those
plans.

     (d)  Disability. The Company shall have the right to terminate Executive's
employment effective after the determination that Executive is unable to work
due to a Disability. If Executive's employment is terminated pursuant to this
Section 5(d), then: (i) the Base Compensation provided for in Section 3 shall
cease to accrue as of the Termination Date specified in the Notice of
Termination as set forth below; (ii) the Company shall pay to Executive any
compensation payable in the amount, at the time and in the manner set forth in
Sections 3 and 4 and, specifically, shall pay the amount described in Section
4(b) to the extent earned notwithstanding such termination; and (iii) at the
option of Executive, Executive and his dependents may continue to participate in
the benefit plans as provided for in Section 3 to the extent Executive and his
dependents are eligible to participate in such benefit plans pursuant to the
terms of such benefit plans. Any benefits payable under insurance and health
plans as a result of Executive's participation in such plans through the
Termination Date shall be paid when due under those plans. Following the
Termination Date, the Company is not obligated to provide Executive or his
dependents the benefits provided for in Section 3 in the event that Executive or
his dependents are not eligible for participation in such plans pursuant to the
terms of such plans due to the termination of Executive's employment with the
Company or for any other reason.

     For purposes of this Agreement, "Disability" shall mean a physical or
mental disability, as determined by an independent physician selected by the
Company, that renders Executive incapable of performing his duties under this
Agreement for 180 days or more within any 365-day period, of which at least 90
days are consecutive. The Termination Date pursuant to this Section 5(d) shall
be no earlier than the date of the first day following the 180-day period
described in this paragraph.

     (e)  Death. If Executive dies during the term of this Agreement, the
Company shall (i) pay Executive's Base Compensation for the period ending on the
date of his death to his Beneficiary; and (ii) pay to Executive's Beneficiary
any compensation payable in the amount, at the time and in the manner set forth
in Sections 3 and 4 and specifically shall pay the amounts described in Section
4(b) to the extent earned notwithstanding Executive's death. Executive's
dependents may continue to participate in the benefit plans as provided for in
Section 3 to the extent Executive's dependents are eligible to participate in
such benefit plans pursuant to the terms of such benefit plans. Following the
Termination Date, the Company is not obligated to provide Executive's dependents
the benefits provided for in Section 3 in the event that Executive's dependents
are not eligible for participation in such plans pursuant to the terms of such
plans due to the termination of Executive's employment with the Company or for
any other reason.

     For purposes of this Agreement, Executive's "Beneficiary" shall be the
personal representative of Executive's estate or if no such representative shall
be appointed within six months after the date of Executive's death, Executive's
heirs under the laws of descent and distribution in effect in the state in which
Executive is domiciled at the date of his death.

     (f)  Other Termination. If Executive's employment with the Company is
terminated other than pursuant to Sections 5 (a), (b), (d) or (e), then (i) the
Base Compensation provided for in Section 3 shall continue being paid through
the third anniversary of the date of this Agreement as if Executive had
continued to be employed through such period; and (ii) the Company shall pay to
Executive any compensation described in Sections 3(b), 3(c) and 4. If
Executive's employment with the Company is terminated due to Executive's
retirement, at the option of Executive, Executive and his dependents may
continue to participate in the benefit plans as provided for in Section 3 to the
extent Executive and his dependents are eligible to

                                       6
<PAGE>
 

participate in such benefit plans pursuant to the terms of such benefit plans.
The participation of Executive and his dependents in such plans shall cease as
of the date Executive becomes employed by another employer. Following the
Termination Date, the Company is not obligated to provide Executive or his
dependents the benefits provided for in Section 3 in the event that Executive or
his dependents are not eligible for participation in such plans pursuant to the
terms of such plans due to the termination of Executive's employment with the
Company or for any other reason.

     (g)  Notice of Termination. Any termination of Executive's employment with
the Company pursuant to this Section 5 (except in the circumstances of
Executive's death) shall be communicated by a written notice of termination by
the terminating party to the other party ("Notice of Termination") and shall
indicate the Termination Date. The Notice of Termination by the Company for
termination for cause shall indicate the specific provisions of this Agreement
relied upon and shall set forth the reason for such termination.

     (h)  Survival of Obligations Provided for in Section 6 and Noncompetition
Agreement. If Executive's employment with the Company is terminated for any
reason, Executive's obligations, duties and responsibilities, as provided for in
Section 6 and the Noncompetition Agreement shall survive the termination of
Executive's employment and shall continue as set forth therein.

                              6. CONFIDENTIALITY

     (a)  Covenant Concerning Confidentiality. Executive agrees that he shall
not disclose, during the Term and thereafter, without the prior written consent
of NIPSCO, to anyone outside of the Company, NIPSCO and its subsidiaries any
confidential matters of the Company, NIPSCO or its subsidiaries or their
predecessors for as long as such matters remain confidential and not generally
known to the public, including without limitation, trade secrets, customer
lists, pricing policies, operating methods, any proprietary information of any
nature or any information concerning the business of, or any customer,
representative, agent or employee of, the Company, NIPSCO or its subsidiaries or
their predecessors that was obtained by Executive in the course of his
employment by the Company, NIPSCO or its subsidiaries or their predecessors,
unless such disclosure is made as a proper part of performing his duties for the
Company. Executive further agrees that if his employment by the Company is
terminated for any reason, he will not take with him, but will leave with and
deliver to the Company, any and all records and papers of whatever nature that
relates to his employment by the Company or bears any information about the
Company, NIPSCO or its subsidiaries or their predecessors. In the event
Executive violates this provision, the Company shall be entitled to any and all
its remedies at law or in equity but shall not be entitled, unless directed by a
court of law, to withhold payment of any amounts due Executive hereunder.

     (b)  Limitation on Covenant Concerning Confidentiality. Executive's
obligations pursuant to this Section shall not apply to any confidential
information if and to the extent Executive is required pursuant to any statute,
law, ordinance, rule, resolution or order of the U.S. Congress, any state or
local legislature, a judge or an administrative law judge to testify in or to a
legislative, judicial or regulatory proceeding or otherwise to disclose such
confidential information. All such information is and will remain the exclusive
property of NIPSCO. For purposes of this Agreement, the terms "trade secrets"
and "confidential information" include, but are not limited to, processes,
methods, techniques, systems, formulas, patents, models, devices, compilations,
customer lists or any information of whatever nature that gives to the Company,
IWC and its subsidiaries an opportunity to obtain an advantage over a competitor
who did not know or use it, but excludes matters which, without breach of
Executive's obligations, are not generally known to the public.

                                       7
<PAGE>
 

     (c)  Judicial Modification of Covenant Concerning Confidentiality. If any
provision contained in this Section shall for any reason be held invalid,
illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provisions of this Section, rather
this Section shall be construed as if such invalid, illegal or unenforceable
provision had never been contained herein. It is the intention of the parties
that if any of the restrictions or covenants contained herein is held to any
extent invalid, such provisions shall not be construed to be null, void or of no
effect, but, to the extent such provision would be valid or enforceable under
applicable law if limited in scope, a court of competent jurisdiction shall
construe and interpret or reform this Section to provide for a covenant having
the maximum enforceable scope and other provisions (not greater than those
contained herein) as shall be valid and enforceable under such applicable law.

                               7.  NO ASSIGNMENT

     No interest or amount payable to Executive, his spouse or any other
beneficiary under this Agreement shall be assignable (in law or equity) by
Executive or such beneficiary and shall not be subject to any manner of
alienation, sale, transfer, assignment, claims of creditors, pledge, attachment,
garnishment, levy, execution or encumbrance of any kind. No such interest or
amount payable or right to receive a payment or distribution may be taken,
voluntarily or involuntarily, for the satisfaction of the obligations or debts
of, or other claims against, Executive or his spouse or other beneficiary,
including claims for alimony, support, separate maintenance and claims in
bankruptcy proceedings. This Agreement is personal in nature and, except as set
forth in Section 13, neither this Agreement nor any rights or obligations under
it may be assigned or delegated by either party without the express written
consent of the other.

                                 8.  INDEMNITY

     Executive shall be indemnified under the Company's By-Laws and covered by
officers liability insurance policies to the extent the Company or NIPSCO
provides such coverage for its other officers.

                                  9.  NOTICES

     Any notice or communication given pursuant to this Agreement must be in
writing and shall be effective only if delivered personally; or sent by
facsimile transmission; or delivered by overnight courier service; or sent by
certified mail, postage paid, return receipt requested, to the recipient at the
address indicated below or to such other address as the party being notified may
have previously furnished to the other party by written notice pursuant to this
Section 9:

     If to the Company, to:

          IWC Resources Corporation
          1220 Waterway Boulevard
          P.O. Box 1220
          Indianapolis, Indiana 46206
          Telephone:  (317) 639-1501
          Facsimile:  (317) 263-6448
          Attn:       President
 
 
                                       8
<PAGE>
 

     with a copy to:
 
          NIPSCO Industries, Inc.
          801 East 86th Avenue
          Merrillville, Indiana 46410
          Telephone:  (219) 647-6004
          Facsimile:  (219) 647-6061
          Attn:       President
 
     If to Executive, to:
 
          James T. Morris
          8191 N. Pennsylvania Street
          Indianapolis, Indiana 46240
          Telephone:  (317) 225-2183

     Notices under this Agreement shall be effective and deemed received on the
date of personal delivery or facsimile transmission (as evidenced by facsimile
confirmation of transmission); on the day after sending by overnight courier
service (as evidenced by the shipping invoice signed by a representative of the
recipient); or on the date of actual delivery to the party to whom such notice
or communication was sent by certified mail, postage prepaid, return receipt
requested (as evidenced by the return receipt signed by a representative of such
party).

                       10.  ENTIRE AGREEMENT; AMENDMENT

     This Agreement and the Noncompetition Agreement represent the entire
agreement of the Company and Executive with respect to the matters set forth in
them. No amendment or modification of the terms of this Agreement shall be
binding upon the parties unless reduced to writing and signed by each of the
parties.

                               11.  SEVERABILITY

     Any provision of this Agreement prohibited by law or deemed unenforceable
shall be ineffective to the extent of such prohibition or unenforceability
without invalidating the remaining provisions.

                              12.  GOVERNING LAW

     This Agreement shall be interpreted and construed under the laws of the
State of Indiana, and the parties consent to the jurisdiction of Indiana state
and federal courts located in the State of Indiana over all matters relating to
this Agreement.

                          13.  SUCCESSORS AND ASSIGNS

     This Agreement shall be binding upon and inure to the benefit of the
Company and its successors and assigns.

                                  14.  WAIVER

     No waiver by any party at any time of any breach by the other party of, or
compliance with, any condition or provision of this Agreement to be performed by
such other party shall be deemed a waiver of any other provisions or conditions
at the same time or at any prior or subsequent time.

                                       9
<PAGE>
 

                          15.  SURVIVAL OF PROVISIONS

     The provisions of Sections 6, 8, 10, 11, 12, 13, 14 and 15 of this
Agreement and the Noncompetition Agreement shall survive the termination of
Executive's employment with the Company and the expiration or termination of
this Agreement.

                               16.  COUNTERPARTS

     This Agreement may be executed in counterparts, each of which shall be
deemed an original.

                               17.  WITHHOLDING

     The Company may withhold from any payment that it is required to make under
this Agreement amounts sufficient to satisfy applicable withholding requirements
under any federal, state or local law.

            [The remainder of this page left intentionally blank.]


                                      10
<PAGE>
 

     IN WITNESS WHEREOF, the parties, intending to be legally bound hereby, have
duly executed this Agreement as of the day and year first set forth above.


                                       SPEEDWAY ACQUISITION CORP.


                                       By: /s/ Stephen P. Adik
                                           -------------------------------


                                       /s/ James T. Morris
                                       -----------------------------------
                                       JAMES T. MORRIS


     The undersigned hereby guarantees the performance by the Company of its
obligations hereunder.


                                       NIPSCO INDUSTRIES, INC.


                                       By: /s/ Stephen P. Adik
                                           -------------------------------


                                      11

<PAGE>
                                                                   Exhibit 10.14

 
                   Executive Supplemental Pension Agreement

AGREEMENT by and between IWC Resources Corporation, an Indiana Corporation (the 
"Company") and James T. Morris (the "Executive") dated as of the 13th day of 
January, 1998.

The Board of Directors of the Company has formerly, through the authorized 
actions of its duly appointed Compensation Committee, approved provisions 
incident to the former Executive Employment (a/k/a Change of Control) Agreement 
("Agreement") that created a supplemental pension in the event of a change of 
control of the Company and separation from service by the Executive.

The Executive, by acknowledgment and release dated March 25, 1997, discharged 
and released Speedway Acquisition Corp. and its subsidiaries and affiliates 
from all obligations and liabilities under the Agreement.

Speedway Acquisition Corp. merged with IWC Resources Corporation March 25, 1997,
survived the merger and was renamed IWC Resources Corporation.

The Company and the Executive seek to eliminate uncertainties and risks related 
to the supplemental pension status formerly granted and to provide the Executive
with a supplemental pension benefit upon a separation from service which ensures
that expectations of the Executive under the former Agreement will be satisfied.

NOW, THEREFORE IT IS AGREED AS FOLLOWS:

1.   The Executive is indefeasibly vested in a pension benefit.

2.   The pension benefit has two components:

     (a)  The amount payable annually to the Executive at the time of separation
     from service on a qualified life annuity basis from the IWC Resources
     defined benefit plan, and

     (b)  A Supplemental Amount payable from the general assets of the Company,
     which when added to the annuity referred to in 2(a) above, yields a
     combined benefit amount of $43,643 on an annual basis for the life of the
     Executive.

3.   The total annual benefit of $43,643 represents a provision calculated and
     intended to overcome actuarial and Plan-provided discounts that apply to
     retirement or separation from service prior to the Executive attaining age
     65.

4.   The Supplemental Amount determined under 2(b) above and payable from the
     general assets of the Company is only available to the Executive in the
     form of an annuity, unless the parties agree otherwise in writing,
     regardless of whether the Executive elects a lump sum distribution on the
     qualified plan element of the benefit.


<PAGE>
 
5.   The Supplemental Amount determined under 2(b) above and payable from the
     general assets of the Company shall, in the event of the death of the
     Executive, be payable to his spouse, if she survives him for the duration
     of her life and shall then terminate.

6.   This Agreement in no way alters, limits, or enhances the Executive's
     benefits available under or participation in IWC Resources Corporation
     Pension Plan, or in the deferred Compensation arrangement provided in
     Section 3(b) of the Executive's Employment Agreement dated March 25, 1997.

7.   The Company may withhold from any amount payable under this Agreement such
     Federal, State of local taxes as shall be required by law.

8.   All notices and other communication hereunder shall be in writing and shall
     be given by hand delivery to the other party or by registered or certified
     mail, return receipt requested, postage prepaid, addressed as follows:

          If to the Executive:         8191 N. Pennsylvania Street
                                       Indianapolis, IN 46240

          If to the Company:           1220 Waterway Blvd.
                                       Indianapolis, IN 46202

          Attention:                   Corporate Secretary and
                                       General Counsel

     or to such other address as either party shall have furnished to the other
     in writing in accordance herewith. Notice and communications shall be
     effective when actually received by the addressee.

IN WITNESS WHEREOF, the Executive has hereunto set the Executive's hand and,
pursuant to the authorization from its Board of Directors, the Company has
caused these presents to be executed in its name on its behalf, all as of the
day and year first above written.



/s/ James T. Morris                    IWC Resources Corporation
- --------------------------             
[Executive]

                                       By: /s/ David A. Kelly
                                          ---------------------------

                                       Title: Executive Vice President
                                              ------------------------


Attest:

/s/ [SIGNATURE APPEARS HERE], Secretary
- ---------------------------------------


<PAGE>
 
                                                                      EXHIBIT 13

1997 FINANCIAL REVIEW
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
HOLDING COMPANY
 
  NIPSCO Industries, Inc. (Industries) is an energy/utility-based holding
company providing electric energy, natural gas and water to the public through
its six wholly-owned regulated subsidiaries (Utilities): Northern Indiana
Public Service Company (Northern Indiana); Kokomo Gas and Fuel Company (Kokomo
Gas); Northern Indiana Fuel and Light Company, Inc. (NIFL); Crossroads
Pipeline Company (Crossroads); Indianapolis Water Company (IWC); and Harbour
Water Corporation (Harbour). Industries' regulated gas and electric
subsidiaries (Northern Indiana, Kokomo Gas, NIFL and Crossroads) are referred
to as "Energy Utilities"; and regulated water subsidiaries (IWC and Harbour)
are referred to as "Water Utilities."
 
  On March 25, 1997, Industries acquired IWC Resources Corporation (IWCR).
IWCR's subsidiaries include two regulated water utilities (IWC and Harbour)
and five non-utility companies providing utility-related services including
installation, repair and maintenance of underground pipelines and utility line
locating and marking. The two primary non-utility subsidiaries are Miller
Pipeline Corporation (Miller) and SM&P Utility Resources, Inc. (SM&P).
 
  Industries also provides non-regulated energy/utility-related services
including energy marketing and trading; power generation; gas transmission,
supply and storage; installation, repair and maintenance of underground
pipelines; utility line locating and marking; and related products targeted at
customer segments principally through the following wholly-owned subsidiaries:
NIPSCO Development Company, Inc. (Development); NIPSCO Energy Services, Inc.
(Services); Primary Energy, Inc. (Primary); Miller; and SM&P. NIPSCO Capital
Markets, Inc. (Capital Markets) handles financing for Industries and its
subsidiaries, other than Northern Indiana. These subsidiaries are referred to
collectively as "Products and Services."
 
  On December 18, 1997, Industries and Bay State Gas Company signed a
definitive merger agreement under which Industries will acquire all of the
common stock of Bay State Gas Company in a stock-for-stock transaction. Refer
to Purchase of Bay State Gas Company in Notes to Consolidated Financial
Statements for a more detailed discussion of the proposed acquisition.
 
NET INCOME
 
  All references throughout this Annual Report to number of common shares
reported for the period including per share amounts, stock option data and
market prices of Industries' common stock have been restated to reflect a two-
for-one stock split which is payable February 20, 1998, to shareholders of
record at the close of business on January 30, 1998. At December 31, 1997,
Industries adopted SFAS No. 128 "Earnings per Share." The adoption of this
statement required Industries to present basic earnings per share and diluted
earnings per share in place of primary earnings per share. Refer to Earnings
per Share in Notes to Consolidated Financial Statements for information
related to this disclosure.
 
  For 1997, net income of Industries increased to $190.8 million, or basic
earnings of $1.54 per average common share, compared to $176.7 million, or
basic earnings of $1.44 per average common share, for 1996. There were
approximately 1.5 million more average common shares outstanding in 1997 than
1996. In 1995, net income was $175.5 million, or basic earnings of $1.36 per
average common share. See Notes to Consolidated Financial Statements for
Segments of Business regarding revenue and operating income derived from the
delivery of gas, electricity, water and products and services.
 
REVENUES
 
  In 1997, operating revenues increased $598.6 million, or 30.1%, over 1996.
Operating revenues in 1996 increased $218.6 million, or 12.4%, from 1995.
 
 
                                       2

<PAGE>
 
  During 1997, gas deliveries in dekatherms (dth), which include
transportation services, increased 2.7%. Gas sales levels in 1997 remained
relatively unchanged from 1996. Gas transportation services increased 4.6%
mainly due to increased deliveries of gas transported for others. The Energy
Utilities had approximately 729,400 gas customers at December 31, 1997. During
1996, gas deliveries increased 6.6% over 1995. Gas sales in 1996 increased
14.5% due to higher sales to residential and commercial customers as a result
of colder weather during the first quarter of 1996 and increased sales to
industrial and wholesale customers. Gas transportation services increased 1.6%
mainly due to increased deliveries by Crossroads, which were partially offset
by decreased deliveries to Northern Indiana's industrial customers.
 
  Gas revenues were $807.2 million in 1997, an increase of $7.8 million from
1996. The increase in gas revenues was mainly due to increased sales to
wholesale customers, increased gas costs per dth and increased deliveries of
gas transported for others, partially offset by decreased sales to residential
and commercial customers and decreased gas transition costs. Gas revenues were
$799.4 million in 1996, an increase of $108.0 million from 1995. The increase
in gas revenues was mainly due to increased sales to residential and
commercial customers as the result of colder weather during the first quarter
of 1996, increased sales to industrial and wholesale customers and increased
gas costs per dth, which were partially offset by decreased gas transition
costs. The large commercial and industrial customers continued to utilize
transportation services provided by the Energy Utilities. Gas transportation
customers purchase much of their gas directly from producers and marketers and
then pay a transportation fee to have their gas delivered over the Energy
Utilities' systems. The Energy Utilities transported 203.7, 194.4 and 191.6
million dth in 1997, 1996 and 1995, respectively.
 
  In 1997, sales of electricity in kilowatt-hours (kwh) decreased 4.5% from
1996 mainly due to decreased sales to wholesale and industrial customers
partially offset by increased sales to residential and commercial customers.
Industrial sales decreased during the period as a result of cogeneration
projects with two of Northern Indiana's major industrial customers coming
online during the period. Northern Indiana had approximately 416,300 electric
customers at December 31, 1997. In 1996, sales of electricity in kilowatt-
hours (kwh) decreased 1.1% from 1995 mainly due to decreased sales to
residential customers due to cooler summer weather in 1996 and decreased sales
to industrial customers due to operational difficulties at several major
industrial customers, which were partially offset by increased sales to
commercial and wholesale customers.
 
  In 1997, electric revenues were $1.017 billion, a decrease of $5.1 million
from 1996. The decrease in electric revenues was mainly due to decreased sales
to industrial customers, partially offset by increased sales to residential
and commercial customers and increased revenues related to wholesale
transactions. Industrial sales decreased during the period as a result of
cogeneration projects with two of Northern Indiana's major industrial
customers coming online during the period. In 1996, electric revenues were
$1.022 billion, a decrease of $8.7 million from 1995. The decrease in electric
revenues was mainly due to decreased sales to residential customers due to
cooler summer weather in 1996 and decreased sales to industrial customers due
to operational difficulties at several major industrial customers, which were
partially offset by increased sales to commercial and wholesale customers.
 
  Water revenue for the period April 1997 through December 1997 was $60.7
million. Water sales to residential and commercial customers accounted for
$54.4 million of 1997 revenues. The Water Utilities had sales in millions of
gallons (m.g.) of 35,566 during the last nine months of 1997 and served
approximately 246,600 customers at December 31, 1997.
 
  In 1997, Products and Services revenues were $701.5 million, an increase of
$535.2 million from 1996. The increase was partially due to an additional
$274.4 million in gas energy marketing revenue resulting from increased sales
to existing customers and customer growth during 1997. NESI Power Marketing,
Inc., a wholly-owned subsidiary of Services, formed in December 1996 to market
wholesale electric power accounted for $167.5 million of additional energy
marketing revenue in 1997. Miller and SM&P contributed $95.6 million to
operating revenues since the March 1997 acquisition of IWCR. Products and
Services revenue in 1996 was $166.3 million, an increase of $119.3 million
from 1995. This increase was primarily due to increased volumes in gas energy
marketing.
 
                                       3

<PAGE>
 
  The components of the changes in operating revenues are shown in the
following table:
 
<TABLE>
<CAPTION>
                                                        YEAR 1997   YEAR 1996
                                                       COMPARED TO COMPARED TO
                                                        YEAR 1996   YEAR 1995
                                                       ----------- -----------
                                                            (IN MILLIONS)
   <S>                                                 <C>         <C>
   Gas Revenue
     Pass through of net changes in purchased gas
      costs, gas storage and storage transportation
      costs...........................................   $ 14.8      $ 55.3
     Gas transition costs.............................     (4.3)      (33.5)
     Changes in sales levels..........................     (6.6)       85.6
     Gas transported..................................      3.9         0.6
                                                         ------      ------
   Gas Revenue Change.................................      7.8       108.0
                                                         ------      ------
   Electric Revenue
     Pass through of net changes in fuel costs........      4.0         3.2
     Changes in sales levels..........................     (9.1)      (11.9)
                                                         ------      ------
   Electric Revenue Change............................     (5.1)       (8.7)
                                                         ------      ------
   Water Revenue Change...............................     60.7         --
                                                         ------      ------
   Products and Services Revenue
     Energy Marketing.................................    441.9        84.0
     Pipeline construction............................     47.2         --
     Locate and marking...............................     48.4         --
     Other............................................     (2.3)       35.3
                                                         ------      ------
   Products and Services
     Revenue Change...................................    535.2       119.3
                                                         ------      ------
       Total Operating Revenue Change.................   $598.6      $218.6
                                                         ======      ======
</TABLE>
 
  See Rate Matters in Notes to Consolidated Financial Statements regarding
FERC Order No. 636 transition costs.
 
  The basic steel industry accounted for 30% of natural gas delivered
(including volumes transported) and 33% of electric sales during 1997.
 
  The Energy Utilities' rate schedules for electric and gas service to their
customers contain an electric rate adjustment clause for changes in the cost
of fuel and firm purchases of electric energy; and gas rate adjustment clauses
to reflect changes in the cost of gas purchased, contracted gas storage and
storage transportation costs. (See Fuel Adjustment Clause and Gas Cost
Adjustment Clause under Summary of Significant Accounting Policies in Notes to
Consolidated Financial Statements.)
 
GAS COSTS
 
  The Energy Utilities' gas costs increased $11.5 million (2.3%) in 1997 due
to increased gas costs per dth, which were partially offset by decreased gas
transition costs. The average cost for the Energy Utilities purchased gas in
1997, after adjustment for gas transition costs billed to transport customers,
was $3.15 per dth as compared to $3.06 per dth in 1996. Gas costs increased
$84.6 million (21.2%) in 1996 due to increased purchases and increased gas
costs per dth, which were partially offset by decreased gas transition costs.
The average cost for the Energy Utilities purchased gas in 1996, after
adjustment for gas transition costs billed to transport customers, was $3.06
per dth as compared to $2.68 per dth in 1995.
 
                                       4

<PAGE>
 
FUEL AND PURCHASED POWER
 
  Cost of fuel for electric generation in 1997 increased mainly as a result of
increased production. The average cost per kwh generated decreased 2.3% from
1996 to 15.43 mills. The cost of fuel for electric generation in 1996
decreased mainly as a result of decreased production. The average cost per kwh
generated decreased 0.6% from 1995 to 15.79 mills.
 
  Power purchased decreased $16.5 million in 1997 as a result of decreased
bulk power purchases. Power purchased increased $10.1 million in 1996 as a
result of increased bulk power purchases and increased cost per megawatt
purchased.
 
COST OF PRODUCTS AND SERVICES
 
  The cost of sales for Products and Services increased $503.3 million in 1997
to $604.5 million. Nine months of operations at IWCR's non-regulated
subsidiaries increased cost of sales $67.2 million in 1997. Additionally,
increased energy marketing activities increased cost of sales $435.7 million
in 1997 compared to 1996. The cost of sales for Products and Services
increased $91.9 million in 1996 to $101.2 million. This increase reflects
primarily an increase in gas marketing activities.
 
OPERATING MARGINS
 
  Operating margins increased $95.0 million in 1997 to $1.211 billion. The gas
operating margin decreased $3.7 million in 1997 due to decreased sales to
residential and commercial customers reflecting milder weather, partially
offset by increased sales to wholesale customers and increased deliveries of
gas transported for others. Operating margin from electric sales increased
$6.0 million due to increased sales to residential and commercial customers,
and increased wholesale transactions, partially offset by decreased sales to
industrial customers. The Water Utilities contributed $60.7 million to
operating margin since the March 1997 acquisition of IWCR. Additionally,
Miller and SM&P increased Products and Services operating margin $28.4 million
during 1997. Operating margins increased $41.1 million in 1996 to $1.116
billion. The gas operating margin increased $23.3 million in 1996 due to
increased sales to residential and commercial customers reflecting colder
weather during the first quarter of 1996, increased sales to industrial and
wholesale customers and increased deliveries of gas transported for others.
Operating margin from electric sales decreased $9.6 million in 1996 due to
decreased sales to residential customers reflecting cooler summer weather in
1996 and decreased sales to industrial customers due to plant operational
difficulties at several major customers, which were partially offset by
increased sales to commercial and wholesale customers. Operating margin from
Products and Services increased $27.4 million in 1996 mainly due to improved
margins in gas production and gas marketing activities.
 
OPERATING EXPENSES AND TAXES
 
  Operating expenses and taxes (except income) in 1997 increased 9.6% from
1996 to $800.4 million and in 1996 increased 5.3% from 1995 to $729.7 million.
 
  Operation expenses increased $44.2 million in 1997 over 1996. Nine months of
operations at IWCR increased operation expenses $44.1 million in 1997.
Additionally, new operations at Primary and Services increased operation
expenses $8.4 million in 1997. These increases were partially offset by
reduced pension costs, environmental costs of $4.2 million and pollution
control facility costs of $4.1 million at Northern Indiana. Operation expenses
increased $3.3 million in 1996 over 1995 due to increased pollution control
facility costs, environmental costs of $5.9 million and other various
increased operating costs partially offset by reduced pension costs.
 
  Maintenance expenses increased $2.5 million in 1997 from 1996 mainly
reflecting nine months of maintenance at the Water Utilities. Maintenance
expenses decreased $4.7 million in 1996 from 1995 mainly reflecting decreased
maintenance activity at electric production facilities and gas underground
storage facilities.
 
                                       5

<PAGE>
 
  Depreciation and amortization expense increased $15.8 million in 1997 from
1996 resulting from plant additions, amortization of plant acquisition
adjustments and intangible assets. Depreciation and amortization expense
increased $27.0 million in 1996 from 1995 resulting from plant additions,
increased amortization of computer software and the amortization of deferred
costs related to scrubber services provided by Pure Air at the Bailly
Generating Station.
 
  Other Income (Deductions) increased $2.6 million in 1997 from 1996 mainly
resulting from the disposition of certain oil and natural gas properties
during the first quarter of 1997. Other Income (Deductions) increased $10.5
million in 1996 from 1995 mainly reflecting the sale of Crescent Dunes
Lakeshore property to the National Park Service.
 
  Interest and other charges increased $14.9 million and $8.4 million in 1997
and 1996, respectively. The 1997 increase reflects the issuance of $300
million of Capital Markets' medium-term notes and interest expense at IWCR.
The 1996 increase reflects the issuance of $169,275,000 of Northern Indiana's
Medium-Term Notes, Series D, and $75 million of Capital Markets' Junior
Subordinated Deferrable Interest Debentures, Series A, and the discontinuance
of carrying charges on deferred charges related to the Bailly Generating
Station scrubber service agreement.
 
  See Notes to Consolidated Financial Statements for a discussion of
accounting policies and transactions impacting this analysis.
 
ENVIRONMENTAL MATTERS
 
  The Utilities have an ongoing program to remain aware of laws and
regulations involved with hazardous waste and other environmental matters. The
Utilities intend to continue to evaluate their facilities and properties with
respect to these rules and identify any sites that would require corrective
action. The Utilities have recorded a reserve of approximately $20 million to
cover probable corrective actions as of December 31, 1997; however,
environmental regulations and remediation techniques are subject to future
change. The ultimate cost could be significant, depending on the extent of
corrective actions required. Based upon investigations and management's
understanding of current laws and regulations, the Utilities believe that any
corrective actions required, after consideration of insurance coverages and
contributions from other potentially responsible parties, will not have a
significant impact on the results of operations or financial position of
Industries.
 
  The Environmental Protection Agency (EPA) has notified Northern Indiana that
it is a "potentially responsible party" (PRP) under the Comprehensive
Environmental Response Compensation and Liability Act (CERCLA) and may be
required to share in the cost of cleanup of several waste disposal sites
identified by the EPA. The sites are in various stages of investigation,
analysis and remediation. At each of the sites, Northern Indiana is one of
several PRPs, and it is expected that remedial costs, as provided under
CERCLA, will be shared among them. At some sites, Northern Indiana and/or the
other named PRPs are presently working with the EPA to clean up the sites and
avoid the imposition of fines or added costs.
 
  Refer to Environmental Matters in Notes to Consolidated Financial Statements
for a more detailed discussion of the status of certain environmental issues.
 
LIQUIDITY AND CAPITAL RESOURCES
 
  During the next few years, it is anticipated that the great majority of
earnings available for distribution of dividends will depend upon dividends
paid to Industries by Northern Indiana. See Notes to Consolidated Financial
Statements for a discussion of the Common Share Dividend.
 
  Utility construction expenditures for 1997, 1996 and 1995 were approximately
$219 million, $208 million and $193 million, respectively. Industries' total
utility plant investment on December 31, 1997, was $6.4 billion.
 
                                       6

<PAGE>
 
  During 1997, Industries' non-utility subsidiaries acquired interests in
other properties and investments totaling approximately $38 million.
 
  On May 28, 1997, Northern Indiana was authorized to issue and sell up to
$217,692,000 of its Medium-Term Notes, Series E, with various maturities, for
purposes of refinancing certain first mortgage bonds and medium-term notes. As
of December 31, 1997, $139.0 million of the medium-term notes had been issued
with various interest rates and maturities. The proceeds from these issuances
were used to pay short-term debt incurred to redeem its First Mortgage Bonds,
Series N, and to pay at maturity various issues of Medium-Term Notes, Series
D.
 
  IWC's first mortgage bonds are secured by its utility plant. Provisions of
trust indentures related to the 8% Series Bonds require annual sinking or
improvement payments amounting to 1/2% of the maximum aggregate amount
outstanding. As permitted, this requirement has been satisfied by substituting
a portion of permanent additions to utility plant.
 
  On February 13, 1996, Capital Markets issued $75 million of 7 3/4% Junior
Subordinated Deferrable Interest Debentures, Series A, due March 31, 2026
(Debentures) pursuant to an underwritten public offering. Proceeds from the
sale of the Debentures were used to pay short-term debt incurred to redeem on
January 12, 1996 Industries' $35 million of 8.75% Preferred Shares, pursuant
to mandatory redemption, and to pay other short-term debt of Capital Markets.
 
  Between March 27, 1997 and May 7, 1997, Capital Markets issued and sold $300
million of medium-term notes with various interest rates and maturities. The
proceeds from these issuances were used for the purchase of IWCR and to pay
outstanding short-term obligations of Capital Markets.
 
  On December 1, 1997, Capital Markets issued $75 million of 6.78% Senior
Notes due December 1, 2027. Proceeds from the sale of these notes were
primarily used to pay Capital Markets' Zero Coupon Notes which matured
December 1, 1997. The remaining balance of the proceeds will be used for
Industries' general corporate purposes.
 
  Capital Markets has a $150 million revolving Credit Agreement which
terminates August 19, 1999. This facility provides short-term financing
flexibility to Industries and also serves as the back-up instrument for a
commercial paper program. As of December 31, 1997, there were no borrowings
outstanding under this agreement.
 
  Capital Markets also has $130 million of money market lines of credit. As of
December 31, 1997, $20.1 million of borrowings were outstanding under these
lines of credit.
 
  As of December 31, 1997, Capital Markets had $17.0 million in commercial
paper outstanding, having a weighted average interest rate of 7.00%.
 
  The obligations of Capital Markets are subject to a Support Agreement
between Industries and Capital Markets, under which Industries has committed
to make payments of interest and principal on Capital Markets' securities in
the event of a failure to pay by Capital Markets. Restrictions in the Support
Agreement prohibit recourse on the part of Capital Markets' investors against
the stock and assets of Northern Indiana. Under the terms of the Support
Agreement, in addition to the cash flow of cash dividends paid to Industries
by any of its consolidated subsidiaries, the assets of Industries, other than
the stock and assets of Northern Indiana, are available as recourse to holders
of Capital Markets' securities. The carrying value of the assets of
Industries, other than the stocks and assets of Northern Indiana, reflected in
the consolidated financial statements of Industries, is approximately $1.3
billion at December 31, 1997.
 
  Cash flow from operations has provided sufficient liquidity to meet current
operating requirements. Because of the seasonal nature of the utility business
and the construction program, Northern Indiana makes use of commercial paper
intermittently as short-term financing. As of December 31, 1997, Northern
Indiana had $71.5 million in commercial paper outstanding, having a weighted
average interest rate of 6.16%.
 
                                       7

<PAGE>
 
  Northern Indiana has a $250 million revolving Credit Agreement with several
banks which terminates August 19, 1999. As of December 31, 1997, there were no
borrowings outstanding under this agreement. In addition, Northern Indiana has
$14.2 million in lines of credit which run to May 31, 1998. The credit pricing
of each of the lines varies from either the lending banks' commercial prime or
market rates. Northern Indiana has agreed to compensate the participating
banks with arrangements that vary from no commitment fees to a combination of
fees which are mutually satisfactory to both parties. As of December 31, 1997,
there were no borrowings under these lines of credit. The Credit Agreement and
lines of credit are also available to support the issuances of commercial
paper.
 
  Northern Indiana also has $273.5 million of money market lines of credit. As
of December 31, 1997, $47.5 million of borrowings were outstanding under these
lines of credit.
 
  Northern Indiana has a $50 million uncommitted finance facility. At December
31, 1997, there were no borrowings outstanding under this facility.
 
  IWCR and its subsidiaries have lines of credit with banks aggregating $73.7
million. At December 31, 1997, $48.9 million of borrowings were outstanding
under these lines of credit.
 
  During recent years, Northern Indiana has been able to finance its
construction program with internally generated funds and expects to be able to
meet future commitments through such funds.
 
  The Utilities do not expect the effects of inflation at current levels to
have a significant impact on their results of operations, ability to contain
cost increases, or need to seek timely and adequate rate relief. The Energy
Utilities do not anticipate the need to file for gas and electric base rate
increases in the near future.
 
MARKET RISK SENSITIVE INSTRUMENTS AND POSITIONS
 
  The primary market risks to which Industries is exposed and in connection
with which Industries uses market risk sensitive instruments are commodity
price risk and interest rate risk.
 
  Industries engages in price risk management activities related to
electricity and natural gas. Price risk arises from fluctuations in energy
commodity prices due to changes in supply and demand. Industries actively
monitors and limits its exposure to commodity price risk. Industries' price
risk management policy allows the use of derivative financial and commodity
instruments to reduce (hedge) exposure to price risk of its supply and related
purchase and sales commitments of energy, as well as related anticipated
transactions. As part of this commodity price risk, Industries is exposed to
geographic price differentials due primarily to transportation costs and local
supply-demand factors. Industries uses basis swaps to hedge a portion of this
exposure. For economic reasons or otherwise, Industries does not hedge all of
its basis exposure.
 
  Industries enters into certain sales contracts with customers based upon a
fixed sales price and varying volumes which are ultimately dependent upon the
customer's supply requirements. Industries utilizes financial instruments to
reduce the commodity price risk based on modeling techniques to anticipate
these future supply requirements. Industries continues to be exposed to price
risk for the difference between the ultimate supply requirements and those
modeled.
 
  Although the Energy Utilities are subject to commodity price risk as part of
their traditional operations, the current regulatory framework within which
the Energy Utilities operate allows for full collection of fuel and gas costs
in rate-making. Consequently, there is limited commodity price risk after
consideration of the related rate-making. However, as the utility industry
deregulates, Energy Utilities will be providing services without the benefit
of the traditional rate-making allowances and will therefore be more exposed
to commodity price risk.
 
  Because the commodities covered by Industries' derivative financial and
commodity instruments are substantially the same commodities that Industries
buys and sells in the physical market, no special correlation studies other
than monitoring the degree of convergence between the derivative and cash
markets are deemed necessary.
 
                                       8

<PAGE>
 
  Industries' daily net commodity position consists of natural gas
inventories, commodity purchase and sales contracts and derivative financial
and commodity instruments. The fair value of such positions is a summation of
the fair values calculated for each commodity by valuing each net position at
quotes from exchanges and over-the-counter markets and includes location
differentials. Based on Industries' net commodity position at fair value at
December 31, 1997, a 10% adverse movement in electric and natural gas market
prices would have reduced net income by approximately $2.3 million. However,
any such movements in prices is not indicative of actual results and is
subject to change. Refer to Summary of Significant Accounting Policies--
Hedging Activities for further discussion of Industries' hedging policies.
 
  Industries utilizes long-term debt as a primary source of capital in its
business. A significant portion of Industries' long-term debt consists of
medium-term notes, the interest component of which resets on a periodic basis
to reflect current market conditions. The Utilities utilize longer term fixed
price debt instruments which have been and will be refinanced at lower
interest rates if Industries deems it to be economical. Refer to Consolidated
Statement of Long-term Debt for detailed information related to Industries'
long-term debt outstanding and Fair Value of Financial Instruments in Notes to
Consolidated Financial Statements for current market valuation of long-term
debt.
 
YEAR 2000 COSTS
 
  Industries has several major projects underway to modify portions of its
systems for proper functioning in the year 2000. These include a project to
evaluate Industries' proprietary software and to work with each of Industries'
software vendors to assure that appropriate steps are being taken to mitigate
the problem in each vendor's software or, in some cases, to replace software
with year 2000 compliant software; a project to identify and mitigate problems
wherever they exist in Industries' systems ranging from equipment used in
Northern Indiana's generating stations to Industries' phone system that have
date information within them; and an initiative to assure that each entity
that electronically receives information from Industries or sends information
to Industries is aware of the steps that Industries is taking and is taking
appropriate steps of its own to address the problem. Consistent with its plan,
Industries expects to be year 2000 compliant with some systems as early as
third quarter 1998 and other systems no later than the third quarter of 1999.
  Costs related to maintenance or modification of Industries' systems have
been and will be expensed as incurred. Industries estimates that costs to
become year 2000 compliant will be approximately $10-$15 million, including
acquisition costs of new systems which will be capitalized consistent with
Industries' accounting policies. Industries does not anticipate the related
costs to have a material impact on its results of operations, nor does
Industries anticipate any disruption of its ability to deliver service as a
result of the year 2000 issue.
 
COMPETITION
 
  The Energy Policy Act of 1992 (Energy Act) allows FERC to order electric
utilities to grant access to transmission systems by third-party power
producers. The Energy Act specifically prohibits federally mandated wheeling
of power for retail customers. On April 24, 1996, FERC issued its Order No.
888-A which opens wholesale power sales to competition and requires public
utilities owning, controlling, or operating transmission lines to file non-
discriminatory open access tariffs that offer others the same transmission
service they provide themselves. Northern Indiana filed its tariff as did
virtually all other transmission owners subject to FERC jurisdiction. Order
No. 888-A also provides for the full recovery of stranded costs--that is,
costs that were prudently incurred to serve power customers and that could go
unrecovered if these customers use open access to move to another supplier.
FERC expects this rule will accelerate competition and bring lower prices and
more choices to wholesale energy customers. On November 25, 1997, FERC issued
Order No. 888-B on rehearing, affirming in all important respects its earlier
Order No. 888-A. Although wholesale customers represent a relatively small
portion of Northern Indiana's sales, Northern Indiana will continue its
efforts to retain and add customers by offering competitive rates.
 
  In January 1997, legislation was introduced in the Indiana General Assembly
addressing electric utility competition and deregulation. This proposed
legislation was not adopted. Legislation similar to the 1997 electric
 
                                       9

<PAGE>
 
restructuring legislation was introduced in January 1998. Northern Indiana has
begun discussions with other utilities and its largest customers on the
technical and economic aspects of possible legislation to allow customer
choice. Operating in a competitive environment will place added pressures on
utility profit margins and credit quality. Increasing competition in the
electric utility industry has already led the credit rating agencies to apply
more stringent guidelines in making credit rating determinations.
 
  Competition within the electric utility industry will create opportunities
to compete for new customers and revenues, as well as increase the risk of the
loss of customers. Industries' management has taken steps to make the company
more competitive and profitable in the changing utility environment, including
partnering on energy projects with major industrial customers and conversions
of some of its generating units to allow use of lower cost, low sulfur coal.
 
  FERC Order No. 636 shifted primary responsibility for gas acquisition,
transportation and peak days' supply from pipelines to local gas distribution
companies such as the Energy Utilities. Although pipelines continue to
transport gas, they no longer provide sales service. The Energy Utilities
believe they have taken appropriate steps to ensure the continued acquisition
of adequate gas supplies at reasonable prices.
 
  The mix of gas revenues from retail sales, interruptible retail sales, firm
transportation service and interruptible transportation services has changed
significantly over the past several years. The deregulation of the gas
industry, since the mid-1980s, allows large industrial and commercial
customers to purchase their gas supplies directly from producers and use the
Energy Utilities' facilities to transport the gas. Transportation customers
pay the Energy Utilities only for transporting their gas from the pipeline to
the customers' premises.
 
  Northern Indiana filed a petition for an Alternative Regulatory Plan (ARP)
with the Commission on November 29, 1995. Following negotiation and settlement
with major intervenors, Northern Indiana submitted a modified ARP to the
Commission on May 9, 1997. In its modified ARP, Northern Indiana proposed to
implement new rates and services that would include, among other things,
further unbundling of services for additional customer classes, increased
customer choice for sources of natural gas supply, negotiated services and
prices, an incentive gas cost mechanism and a price protection program. On
October 8, 1997, the Commission issued an order approving, in all respects,
the modified ARP which became effective November 1, 1997. The first pilot
program was launched in January 1998 and the first gas volumes will flow under
this program by March 1998. Significantly, the Commission order allows the
natural gas marketing affiliate of Northern Indiana to participate as a
supplier in this pilot and in future expansions of supplier choice to other
customers on the Northern Indiana system. On October 28, 1997, ERI Services,
Inc. and Enron Capital and Trade Resources Corp. filed Petitions for Rehearing
of the October 8, 1997 order. Northern Indiana expects a Commission decision
on these Petitions during the first quarter of 1998.
 
  To date, the Energy Utilities' system has not been materially affected by
competition, and management does not foresee substantial adverse effects in
the near future, unless the current regulatory structure is substantially
altered. The Energy Utilities believe the steps they are taking to deal with
increased competition will have significant, positive effects in the next few
years.
 
FORWARD LOOKING STATEMENTS
 
  This Annual Report contains forward looking statements within the meaning of
the securities laws. Industries cautions that, while it believes such
statements to be based on reasonable assumptions and makes such statements in
good faith, there can be no assurance that the actual results will not differ
materially from such assumptions or that the expectations set forth in the
forward looking statements derived from such assumptions will be realized.
Investors should be aware of important factors that could have a material
impact on future results. These factors include, but are not limited to,
weather, the federal and state regulatory environment, the economic climate,
regional, commercial, industrial and residential growth in the service
territories served by Industries' subsidiaries, customers' usage patterns and
preferences, the speed and degree to which competition enters the utility
industries, the timing and extent of changes in commodity prices, changing
conditions in the capital and equity markets and other uncertainties, all of
which are difficult to predict, and many of which are beyond the control of
Industries.
 
                                      10


<PAGE>

                                                                      EXHIBIT 21

                            NIPSCO INDUSTRIES, INC.
                 LIST OF SUBSIDIARIES AS OF DECEMBER 31, 1997

  All subsidiaries are incorporated in Indiana, except for Elm Energy and
Recycling (UK) Ltd., which is incorporated in United Kingdom; FuelMaker
Corporation, which is incorporated in Toronto, Canada; Inventory Management and
Distribution Company, L.L.C., Laredo Nueces Pipeline Company, Midtex Gas Storage
Company, L.L.P. and NFCO Acquisition Company, which are incorporated in Texas; N
Squared Aviation, LLC, Triumph Natural Gas, Inc., Market Hub Partners L.P. and
Bristol Resources Production Company, L.L.C. which are incorporated in Delaware;
Sun Power Corporation which is incorporated in California; Progeni, Inc. which
is incorporated in Illinois; and NESI Energy Marketing Canada Limited, NIPSCO
Energy Services Canada, Limited and Southlake Energy Inc., which are
incorporated in Alberta, Canada. All subsidiaries are wholly-owned unless
otherwise indicated.

NIPSCO Industries Management Services Company

Hamilton Harbour Insurance Services, Ltd.

NI Telecomm, Inc.

Crossroads Pipeline Company

NIPSCO Capital Markets, Inc.

NEM Acquisition Corp.

IWC Resources Corporation
     Its subsidiaries are:
         Indianapolis Water Company
         Harbour Water Corporation
         Utility Data Corporation
         Waterway Holdings, Inc.
         IWC Services, Inc.
           Its subsidiary is:
               White River Environmental Partnership  (1)
         SM&P Utility Resources, Inc.
         Miller Pipeline Corporation

Primary Energy, Inc.
     Its subsidiaries are:
         Harbor Coal Company
         Lakeside Energy Corporation
         North Lake Energy Corporation
         Portside Energy Corporation
         Cokenergy, Inc.

Northern Indiana Public Service Company
     Its subsidiaries are:
         NIPSCO Exploration Company, Inc.
         Shore Line Shops Incorporated

NI Energy Services, Inc. (formerly known as NIPSCO Energy Services, Inc.)
     Its subsidiaries are:
         Market Hub Partners, L.P. (2)
         Inventory Management and Distribution Company, L.L.C. (3)
         NIPSCO Energy Trading Corp.
         NIPSCO Fuel Company, Inc.


<PAGE>
 
          Its subsidiaries are:
               NFCO Acquisition Company
               Bristol Resources Production Company, L.L.C. (4)
         NI-TEX, Inc.
           Laredo Nueces Pipeline Company  (5)
           Midtex Gas Storage Company, L.L.P.  (6)
         NESI Energy Marketing L.L.C. (7) (8)
         Green Fuels, Inc.
         Parkway Engineering and Distributing Company, Inc.
         NESI Power Marketing, Inc.
         NESI Integrated Energy Resources, Inc.
         NESI Energy Services Company
         NIPSCO Energy Services Canada Limited
           Its subsidiaries are:
               FuelMaker Corporation  (9)
               Southlake Energy, Inc.
               NESI Energy Marketing Canada Ltd. (10)
         Triumph Natural Gas, Inc.  (11)

NIPSCO Development Company, Inc.
     Its subsidiaries are:
         Analytic Systems Laboratories, Inc. (12)
         Elm Energy and Recycling (UK) Limited (12)
         Protonics Research, Inc. (12)
         G. R. Clark Corporation
         International Polymer Corp.
         JOF Transportation Company
         KOGAF Enterprises, Inc.
         Lake Erie Land Company
           Its subsidiary is:
               SCC Services, Inc.
         N Squared Aviation, LLC  (13)
         NDC Douglas Properties, Inc.
         NIPSCO International Power Systems Company
         NIPSCO Security Services, Inc.
         RIC, Inc.
           Its subsidiary is:
               Cardinal Property Management, Inc.
         Riverside Caloric Company
         Progeni, Inc.
         Sun Power Corporation (14)

Kokomo Gas and Fuel Company
     Its subsidiary is:
         KGF Trading Company

Northern Indiana Fuel and Light Company, Inc.
     Its subsidiary is:
         Northern Indiana Trading Company
_______________
(1)  Majority-owned interest of IWC Services, Inc.
(2)  Minority-owned partnership of NI Energy Services, Inc.
(3)  Minority-owned interest of NI Energy Services, Inc.
(4)  Majority-owned interest of NIPSCO Fuel Company, Inc.
(5)  50% owned interest of NI-TEX, Inc.
(6)  Minority-owned interest of NI-TEX, Inc.
(7)  Majority-owned interest of NI Energy Services, Inc.
(8)  Minority-owned interest of NEM Acquisition Corp.
(9)  50% owned subsidiary of NIPSCO Energy Services Canada Limited. Sold 
     January 1998.
(10) Majority-owned by NIPSCO Energy Services Canada Limited.
<PAGE>

 
(11)  Majority-owned subsidiary of NI Energy Services, Inc.
(12)  Majority-owned subsidiary of NIPSCO Development Company, Inc.
(13)  Minority-owned interest of NIPSCO Development Company, Inc.
(14)  Minority-owned subsidiary of NIPSCO Development Company, Inc.

<PAGE>
 

                                                                      EXHIBIT 23
                                                                                
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
                                        
  As independent public accountants, we hereby consent to the incorporation of
our report included in this Form 10-K, into NIPSCO Industries, Inc.'s
previously filed Form S-8 Registration Statement No. 33-30619; Form S-8
Registration Statement No. 33-30621; Form S-8 Registration Statement No. 333-
08263; Form S-8 Registration Statement No. 333-19981;  Form S-8 Registration
Statement No. 333-19983; Form S-8 Registration Statement No. 333-19985; Form S-3
Registration Statement No. 333-22347; Form S-3 Registration Statement No. 333-
26847 and Form S-3 Registration Statement No. 333-39911.


                                                       ARTHUR ANDERSEN LLP

Chicago, Illinois
March 24, 1998







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