THERMO ECOTEK CORP
10-K, 1998-12-16
COGENERATION SERVICES & SMALL POWER PRODUCERS
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                     SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, DC 20549
            ----------------------------------------------------

                                 FORM 10-K

(mark one)
[ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities
      Exchange Act of 1934 for the fiscal year ended October 3, 1998.

[   ] Transition Report Pursuant to Section 13 or 15(d) of the
      Securities Exchange Act of 1934.

                       Commission file number 1-13572

                         THERMO ECOTEK CORPORATION
           (Exact name of Registrant as specified in its charter)

Delaware                                                             04-3072335
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)

245 Winter Street
Waltham, Massachusetts                                              02454-9046
(Address of principal executive offices)                            (Zip Code)

     Registrant's telephone number, including area code: (781) 622-1000

        Securities registered pursuant to Section 12(b) of the Act:

                   
                                                       Name of exchange on 
           Title of each class                           which registered
      ----------------------------                   -----------------------
      Common Stock, $.10 par value                   American Stock Exchange

        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 the filing requirements for
at least 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 the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference into Part III of this Form 10-K or any
amendment to this Form 10-K. [ ]

The aggregate market value of the voting stock held by nonaffiliates of the
Registrant as of October 30, 1998, was approximately $25,316,000.

As of October 30, 1998, the Registrant had 35,927,771 shares of Common Stock
outstanding.

                    DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's Annual Report to Shareholders for the fiscal year
ended October 3, 1998, are incorporated by reference into Parts I and II.

Portions of the Registrant's definitive Proxy Statement for the Annual Meeting
of Shareholders to be held on March 10, 1999, are incorporated by reference into
Part III.

<PAGE>
                                   PART I
                                     
Item 1.    Business

(a) General Development of Business

    Thermo Ecotek Corporation (the Company or the Registrant) is an
environmental company that operates in two segments: Energy and Biopesticides.
The Energy segment operates independent electric power-generation facilities
through joint ventures, limited partnerships, or wholly owned subsidiaries (the
Operating Companies) and also operates a subbituminous coal-beneficiation
facility and a natural gas business. The Biopesticides segment manufactures and
sells biopesticides through the Company's majority-owned subsidiary, Thermo
Trilogy Corporation.

    Initially, the Company designed, developed, and acted as general contractor
for the construction of cogeneration systems fueled by natural gas and diesel.
These turnkey facilities were generally sold to third-party operators upon
completion and had a total generating capacity of approximately 60 megawatts. In
the mid-1980s, the Company began developing biomass-fueled power plants to take
advantage of a favorable regulatory environment and attractive power-sales
agreements. Biomass plants use environmentally responsible fuels, including wood
and agricultural wastes. The Company currently operates seven biomass facilities
in the U.S. with a total electric generating capacity of 140 megawatts.

    In January 1998, the Company, through a wholly owned subsidiary's
participation in a joint venture, indirectly acquired a majority interest in the
assets of a 12-megawatt energy center near Tabor, Czech Republic, along with the
business of five auxiliary boilers in the town of Pribram, Czech Republic. The
Company has begun construction to expand the 12-megawatt facility to 50-megawatt
capacity.

    The Company has also entered into the field of engineered "clean" fuels
through a partnership agreement with KFx, Inc. In August 1995, the Company,
through two wholly owned subsidiaries, entered into a Limited Partnership
Agreement with KFx Wyoming, Inc., a subsidiary of KFx (the K-Fuel Partnership).
In return for a 95% equity interest in the K-Fuel Partnership, the Company has
provided approximately $63 million for the design, construction, and operation
of the first full-scale coal production facility to use the patented K-Fuel
"clean coal" technology (the K-Fuel Facility). The K-Fuel Partnership has been
granted, in exchange for future contingent royalty payments, a nonexclusive
right and license to use this patented clean coal technology. The K-Fuel
Facility transforms high-moisture, low-energy coal into as much as 500,000 tons
per year of low-moisture, high-energy, solid fuel. The K-Fuel Facility commenced
operations in April 1998.

    During fiscal 1998, the Company established its Star Natural Gas subsidiary
in Dallas, Texas, to pursue opportunities in the natural gas gathering,
processing, storage, and marketing business.

    The Company has expanded beyond biomass power generation into other products
and processes that protect the environment. In May 1996, the Company, through
Thermo Trilogy, acquired the assets of the W.R. Grace & Co.'s biopesticide unit
for approximately $8.1 million and the assumption of certain liabilities. In
addition, the Company will pay a royalty fee of seven percent on annual sales of
the acquired business in excess of $14 million through the year 2000. Thermo
Trilogy develops, manufactures, and markets environmentally friendly products
used for pest control. Derived from naturally occurring microorganisms,
biopesticides safely and effectively control insects, diseases, and mites on
numerous crops. In January 1997, Thermo Trilogy acquired substantially all of
the assets of biosys, inc., a biopesticide company, through bankruptcy
liquidation for approximately $11.2 million in cash and the assumption of
certain liabilities. In November 1997, Thermo Trilogy acquired the sprayable
bacillus thuringiensis (Bt)-biopesticide product line of Novartis AG and its
affiliates for approximately $19.1 million in cash and the assumption of certain
liabilities. In fiscal 1998*, Thermo Trilogy issued shares of its common stock
in private placements for net proceeds of $14.9 million.
- --------------------
* References to fiscal 1998, 1997, and 1996 herein are for the years ended
  October 3, 1998, September 27, 1997, and September 28, 1996.

                                       2
<PAGE>

    The Company operated as a division of Thermo Electron Corporation's Energy
Systems Division from 1979 until its incorporation as Thermo Energy Systems
Corporation in November 1989. At October 3, 1998, Thermo Electron owned
approximately 94% of the Company's outstanding common stock, giving Thermo
Electron the power to elect all Directors of the Company. Thermo Electron is a
world leader in monitoring, analytical, and biomedical instrumentation;
biomedical products including heart-assist devices, respiratory-care equipment,
and mammography systems; and paper recycling and papermaking equipment. Thermo
Electron also develops alternative-energy systems and clean fuels; provides a
range of services, including industrial outsourcing and environmental-liability
management; and conducts research and development in advanced imaging, laser
communications, and electronic information-management technologies. Thermo
Electron intends for the foreseeable future to maintain at least 80% ownership
of the Company, so that it may continue to file consolidated U.S. federal income
tax returns with the Company. This may require the purchase by Thermo Electron
of additional shares of the Company's common stock from time to time as the
number of outstanding shares issued by the Company increases. These and any
other purchases may be made either on the open market or directly from the
Company. During fiscal 1998, Thermo Electron purchased 1,499,400 shares of the
Company's common stock on the open market for a total price of $23,588,000. In
addition, Thermo Electron converted $68.5 million principal amount of the
Company's subordinated convertible debentures into 10,815,846 shares of Company
common stock. See Notes 6 and 12 to Consolidated Financial Statements in the
Company's Fiscal 1998 Annual Report to Shareholders for a description of
outstanding stock options and convertible notes issued by the Company.

    Forward-looking Statements

    Forward-looking statements, within the meaning of Section 21E of the
Securities Exchange Act of 1934, are made throughout this Annual Report on Form
10-K. For this purpose, any statements contained herein that are not statements
of historical fact may be deemed to be forward-looking statements. Without
limiting the foregoing, the words "believes," "anticipates," "plans," "expects,"
"seeks," "estimates," and similar expressions are intended to identify
forward-looking statements. There are a number of important factors that could
cause the results of the Company to differ materially from those indicated by
such forward-looking statements, including those detailed under the heading
"Forward-looking Statements" in the Registrant's Fiscal 1998 Annual Report to
Shareholders, which statements are incorporated herein by reference.

(b) Financial Information About Industry Segments

    Financial Information concerning the Company's industry segments is
summarized in Note 13 to Consolidated Financial Statements in the Registrant's
1998 Annual Report to Shareholders, which information is incorporated herein by
reference.


                                       3
<PAGE>

(c) Description of Business

    (i) Principal Products and Services

Energy

Clean Power Resources

Operating Projects

    The following table summarizes certain information relating to the Company's
projects currently in operation. With the exception of the Mendota plant, at the
end of each leased facility's applicable lease term, the Company has the option
to renew the lease for a specified period or purchase the facility at fair
market value. The Mendota plant may be purchased for a fixed amount at the end
of its lease term.

Project       Location      Plant Size   Ownership   Inservice     Lease/Own
                             (net mw)   of Operating   Date
                                          Company
- -------------------------------------------------------------------------------

Hemphill      New              13.6           67%    December        Lease
              Hampshire                              1987

Gorbell       Maine            13.6           60%    December        Lease
                                                     1987         

Whitefield    New              13.6          100%    July 1988       Own
              Hampshire                                           

Mendota       California       25            100%    May 1990        Lease
                                                                  

Woodland      California       25            100%    May 1990        Lease
                                                                  

Delano I      California       27            100%    January        Own
                                                     1991         

Delano II     California       22            100%    January         Own
                                                     1994         

Tabor         Czech            12             87%    January         Own
              Republic                               1998*        

* Represents date facility was acquired by the Company.

    Hemphill. The Hemphill facility is a 13.6-megawatt wood waste plant located
on a 50-acre site in Springfield, New Hampshire. The Operating Company is a
joint venture in which the Company has a 67% interest. The generating equipment
at the Hemphill facility is owned by BankBoston Leasing Services Inc., which
leases the facility to the Operating Company through March 2003, with an option
to renew or purchase the facility at fair market value. Public Service of New
Hampshire (PSNH) purchases power produced by the plant at a fixed rate under a
rate order issued by the New Hampshire Public Utility Commission (NHPUC)
expiring in 2006. The Operating Company purchases wood waste pursuant to two
contracts with affiliates of the Company's joint venture partner, each of which
expires in 2003. The contracts provide for the supply of wood waste to the
Operating Company at market prices. In 1990, a plan of reorganization (the Plan)
for PSNH was approved by the U.S. Bankruptcy Court for the District of New
Hampshire. Pursuant to the Plan, Northeast Utilities (NU) acquired the assets of
PSNH. An agreement between NU and the State of New Hampshire contains language
to the effect that PSNH will seek to renegotiate some of the terms of certain
rate orders with small power producers, including the Whitefield (discussed
below) and Hemphill Operating Companies, and that the state will support PSNH in
such efforts. PSNH reached an agreement in principle with these two Operating
Companies to settle the renegotiation of their rate orders. The settlement
agreement is subject to the approval of NHPUC on terms acceptable to both PSNH
and the Operating Companies. The principal terms of the agreement generally call
for the two Operating Companies to reduce the amount of power sold annually to
PSNH to

                                       4
<PAGE>

70% of the plants' capacities, and to reduce the price per kilowatt paid by PSNH
to $0.06 per kilowatt hour, escalating three percent per year for the remainder
of the term of the original, applicable rate order. In consideration of these
reductions, the Operating Companies would receive certain cash settlement
payments, paid over several years. The settlement agreement has technically
expired; however, no party to the settlement agreement has notified the other
that it would not proceed in accordance with the terms thereof if approved by
NHPUC, nor was any party required to do so. The settlement, if approved and
executed, is not expected to have a material impact on the Company's results of
operations or financial condition. Should the matter not reach resolution, the
Company does not believe that PSNH has the right to take unilateral action to
reduce the price of purchased power under such arrangements. Rejection of the
Company's rate orders would result in a claim for damages by the Company and
could be the subject of lengthy litigation. In January 1997, NU disclosed in a
filing with the Securities and Exchange Commission that if a proposed
deregulation plan for the New Hampshire electric utility industry were adopted,
PSNH could default on certain financial obligations and seek bankruptcy
protection. In February 1997, NHPUC voted to adopt a deregulation plan, and in
March 1997, PSNH filed suit to block the plan. In March 1997, the federal
district court issued a temporary restraining order which prohibits the NHPUC
from implementing the deregulation plan as it affects PSNH, pending a
determination by the court as to whether PSNH's claim could then be heard by the
court. In April 1997, the court ruled that it could hear the case and ordered
that the restraining order continue indefinitely pending the outcome of the
suit. In addition, in March 1997, the Company, along with a group of other
biomass power producers, filed a motion with the NHPUC seeking clarification of
the NHPUC's proposed deregulation plan regarding several issues, including
purchase requirements and payment of current rate order prices with respect to
the Company's energy output. In May 1998, NHPUC issued a written ruling
rejecting the settlement agreements and modifications that would impact PSNH's
ability to finance and secure the settlement agreement. An unfavorable
resolution of this matter, including the bankruptcy of PSNH, could have a
material adverse effect on the Company's results of operations and financial
position.

    Gorbell. The Gorbell facility is a 13.6-megawatt wood waste plant located on
a 56-acre site in Athens, Maine. The design of the facility is substantially
similar to the Hemphill plant. The Operating Company is a joint venture in which
the Company has a 60% interest. The generating equipment at the Gorbell facility
is owned by BankBoston Leasing Services Inc., which leases the facility to the
Operating Company through March 2003, with an option to renew or purchase the
facility for fair value. Power produced by the plant is sold to Central Maine
Power Company (CMP) through 2007 at a fixed price per kilowatt hour that is
indexed annually to the rate of inflation. The Operating Company's fuel is
purchased from an affiliate of the Company's joint venture partner pursuant to
an agreement expiring in 2002 under which the price escalates based upon a
prescribed index.

    Whitefield. The Whitefield facility is a 13.6-megawatt wood waste plant
located on a 46-acre site in Whitefield, New Hampshire. The power produced by
the plant is sold to PSNH at established rates under a power-sales agreement
that expires in 2005. This plant is also subject to a dispute with PSNH (See
"Hemphill" above). Fuel is purchased at a fixed price pursuant to an agreement
expiring in 2001. The Whitefield facility was originally owned by Chrysler
Capital Corp., and leased to the Operating Company. The Company purchased the
Whitefield facility in August 1992.

    Mendota. The Mendota facility is a 25-megawatt agricultural and urban wood
waste plant located on an 80-acre site in Mendota, California. The Operating
Company is a limited partnership, 100% of which is owned by the Company. The
generating equipment is owned by Chrysler Capital Corp., which leases the
equipment to the Operating Company through 1999 at which point the Company will
have an option to purchase the facility for $5 million. In June 1995, the
Operating Company amended the facility lease which resulted in the agreement
being treated as a capital lease. The power generated by the plant is sold to
Pacific Gas & Electric (PG&E) under a standard offer #4 (SO#4) contract expiring
in 2014. Under the contract, PG&E is required to purchase the plant's
electricity at predetermined prices until 2000, and at a price equal to PG&E's
avoided cost for the remainder of the contract. Payments for capacity are fixed
throughout the life of the contract. PG&E has asserted that the fixed rates
under this contract will terminate mid-1999; however, the Company disputes this
assertion. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations" incorporated by reference into Item 7 hereof.
Approximately 28% of the fuel for the plant is purchased pursuant to long-term
contracts terminating between 1998 and 2002, under which prices increase in
accordance with prescribed schedules or market-based indexes. The remainder of
the plant's fuel is purchased by the Operating Company on the spot market.

                                       5
<PAGE>

    The power-sales agreements between the Mendota and Woodland (discussed
below) Operating Companies and PG&E allowed PG&E to curtail the quantity of
power purchased under these agreements by up to 1,000 hours of generating
capacity annually at each plant. PG&E normally exercised its curtailment rights
during periods when cheaper hydroelectric power was available, which generally
occurred following periods of heavy rain or snow. Curtailment reduces the power
payment received by the Operating Companies and, therefore, has an adverse
effect on the financial results of those Operating Companies. In November 1997,
the Company renegotiated PG&E's curtailment rights limiting PG&E to 500 hours
per year effective January 1, 1998. The Company experienced approximately 780,
860, and 930 hours of utility-imposed curtailments at each of the two plants
during fiscal 1998, 1997, and 1996, respectively.

    Woodland. The Woodland facility is a 25-megawatt agricultural and urban wood
waste plant located on a 38-acre site in Woodland, California. The design of the
plant is essentially the same as the Mendota plant. The Operating Company is a
limited partnership, 100% of which is owned by the Company. The generating
equipment is owned by BankBoston Leasing Services Inc., which leases the
equipment to the Operating Company through March 2010, with an option to renew
or purchase the equipment for fair value. The electricity generated by the plant
is sold to PG&E under an SO#4 contract expiring in 2014, at predetermined prices
until 2000. PG&E has asserted that the fixed rates under this contract will
terminate mid-1999; however, the Company disputes this assertion. The price for
the remainder of the contract is PG&E's avoided cost. Payments for capacity are
fixed throughout the life of the contract. Approximately 21% of the fuel for the
plant is purchased pursuant to long-term contracts terminating in 2000, under
which prices increase in accordance with prescribed schedules or market-based
indexes. The remaining fuel is purchased by the Operating Company on the spot
market.

    The Operating Company has conditions in its nonrecourse lease agreement that
require the funding of a "power reserve" in years prior to 2000, based on
projections of operating cash flow shortfalls in 2000 and thereafter. The power
reserve represents funds available to make lease payments in the event that
revenues are not sufficient after the plant converts to avoided cost rates in
March 2000. This funding requirement will significantly limit future profit
distributions the Operating Company may make to the Company. Accordingly,
beginning in the first quarter of fiscal 1997, the Company has expensed the
funding of reserves required under Woodland's nonrecourse lease agreement to
cover projected shortfalls in lease payments beginning in 2000. Consequently,
the results of the Woodland plant were reduced to approximately breakeven in
fiscal 1998. During fiscal 1997 and 1996, the Woodland plant contributed $1.0
million and $5.1 million of operating income, respectively. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations"
incorporated by reference into Item 7 hereof.

    Delano I. The Delano I facility is a 27-megawatt agricultural and urban wood
waste plant located on a 124-acre site in Delano, California. Southern
California Edison (SCE) purchases power under an SO#4 contract expiring in 2020,
under which energy prices are predetermined until September 2000, and then at
avoided cost for the remainder of the contract. Approximately 49% of the fuel
supply is purchased pursuant to long-term contracts with terms expiring at
various dates through 2004 under which prices increase in accordance with
prescribed schedules or market-based indexes. The remaining fuel is purchased by
the Operating Company on the spot market. The Company has guaranteed to the
Operating Company the price and availability of fuel that is not purchased
pursuant to the long-term contracts. The Delano I generating equipment was
originally owned by Westinghouse Credit Corporation and leased to the Company.
In December 1993, the Company purchased Delano I for $21.5 million in cash and
the assumption of $66.9 million original principal amount of nonrecourse,
long-term tax-exempt bonds issued by the California Pollution Control Finance
Authority (CPCFA). As of October 3, 1998, $35.6 million principal amount was
outstanding on these bonds. These bonds effectively bear interest at a rate of
8.3%, with principal and interest payable semi-annually until maturity in 2000.
The cash portion of the purchase price was funded by borrowings from Thermo
Electron.

    Delano II. In January 1994, the Delano Operating Company commenced operation
of phase II of the Delano project, a 22-megawatt agricultural and urban wood
waste plant located on the same site as Delano I. The facility is wholly owned
by the Delano Operating Company. Power generated by the Delano II facility is
also purchased by SCE under the Delano I contract described above, under which
prices are fixed until September 2000. Fuel is also purchased pursuant to the
same contracts as Delano I. The Delano II facility is owned by the Company and
is subject to $66 million principal amount of nonrecourse, long-term tax-exempt
bonds issued by CPCFA. As of October 3, 1998, $16.2 million principal amount was
outstanding on these bonds. These bonds effectively bear interest at a rate of
6%, with principal and interest payable semi-annually until maturity in 2000.



                                       6
<PAGE>

    Czech Republic. In January 1996, the Company, through a wholly owned
subsidiary, signed a joint development agreement with a Czech power-development
company, EMD Praha Spol s.r.o. The Company owns a 65% interest in this joint
venture. The initial focus is on expansion and environmental retrofit of
existing Czech energy centers. To support this effort, the Company has opened an
office in Prague. The development of projects through the joint venture will be
subject to a number of conditions including negotiation of definitive agreements
for power sale, fuel supply, construction, and other agreements with third
parties. In January 1998, the Company entered into a new joint venture
arrangement, superseding the original arrangement, and in connection therewith,
indirectly acquired a majority interest in two Czech energy centers near the
towns of Tabor and Pribram. The Tabor facility provides 12 megawatts of
electrical output and 165 tons per hour of thermal production. Plans for the
Tabor facility include the expansion and modernization of the energy center to
provide approximately 50 megawatts of electrical output to be sold to the local
power distribution company and an adjacent industrial customer. Construction to
expand the Tabor facility commenced in fiscal 1998. At the Pribram facility, the
joint venture has purchased five auxiliary boilers that provide thermal service
during peak hours. In addition, the Company is exploring other projects relating
to expanding and retrofitting existing Czech energy centers through the joint
venture.

Projects in Development

    United States

    The State of California's Public Utility Commission (CPUC) has mandated the
restructuring of California's electric utility industry. Under the terms of the
mandate, the competitive market for electric power generation commenced in March
1998, contemporaneously with the Company's acquisition of two power-generation
facilities and related sites in California for approximately $9.5 million in
cash and the assumption of certain liabilities. These natural gas-fired
facilities were built in the 1950's and have been designated "non must run" by
the California Independent System Operator, meaning they are not currently
essential for assuring the reliable operation of the California power grid.
During calendar 1997, the plants operated at less than five percent capacity.
These facilities pose an opportunity to repower a 126-megawatt San Bernadino
facility and a 154-megawatt Highgrove facility with new equipment and technology
with the capacity to generate, on a combined basis, 600 megawatts of electricity
at competitive rates, with fewer emissions. The Company is currently evaluating
its various options regarding its participation, through these facilities, in
the recently deregulated California electric-power market. If the Company
undertakes to repower these facilities, the Company expects a significant
financing would be involved including significant equity investments and bank
financings. No assurance can be given that the Company will undertake to repower
these facilities or that if it does, it will successfully complete such projects
on a timely basis or at all. In addition, to sell power from these facilities,
the Company must ensure that it will not be subject to regulation as a holding
company under PUHCA and that all necessary approvals from FERC and/or CPUC are
obtained. In fiscal 1998, the Company obtained Exempt Wholesale Generator status
with respect to these facilities.

    The Company is also pursuing a number of domestic electric power projects.
The project opportunities actively being pursued are located in Florida and
California and, like the San Bernadino and Highgrove facilities, involve the
repowering or reconfiguration of existing power stations. The projects are
subject to a number of conditions which may impact their economic viability and
as a result there is no assurance that the Company will be successful in
operating these facilities.

    Italy

    In September 1996, the Company, through a wholly owned subsidiary, formed a
joint venture (the Joint Venture) with Marcegaglia Group of Mantova, Italy, to
develop, own, and operate biomass-fueled electric-power facilities in that
country. The Joint Venture has focused its development efforts on four
facilities for which it has signed preliminary power-purchase contracts with
ENEL (the Italian electric utility), all of which have been approved by the
Italian government's price subsidy program for biomass-fueled plants. The Joint
Venture has established an office near Milan to coordinate the process of
securing site locations, permits, and fuel sources and arranging for the
construction and financing of these facilities. The development of the
facilities is subject to a number of conditions including negotiation of
definitive agreements for power sale, fuel supply, and other agreements with
third parties. No assurance can be given that conditions or agreements will be
satisfied on a timely basis.

                                       7
<PAGE>


    The Company had been exploring opportunities in India and the Dominican
Republic but, due to a variety of circumstances, has decided to no longer
actively pursue those business opportunities.

Clean Fuels

    KFx, Fuel Partners, L.P. In August 1995, the Company, through two wholly
owned subsidiaries, entered into a Limited Partnership Agreement with KFx
Wyoming, Inc., a subsidiary of KFx, Inc., to develop, construct, and operate a
subbituminous coal-beneficiation plant to be constructed near Gillette, Wyoming.
The K-Fuel Partnership has been granted, in exchange for certain future
contingent royalty payments, a nonexclusive right and license to use certain
patented clean coal technology to create a low-moisture, high-energy fuel with
reduced sulfur that will help coal-burning utilities meet the SO(2) emission
restrictions contained in the Clean Air Act through fuel switching or blending.

    The K-Fuel Partnership procured a 24-acre site for construction of the plant
and began construction in August 1995 under a third party, turnkey construction
contract. In return for a 95% equity interest in the K-Fuel Partnership, the
Company has provided approximately $63 million for the design, construction, and
operation of the plant with the capacity to produce up to 500,000 tons of K-Fuel
per year. A tax credit is available for facilities producing and selling
alternative fuels, such as K-Fuel. To be eligible, companies must have entered
into binding, written contracts for the construction of the facility by December
31, 1996 and facilities must be placed in service no later than June 30, 1998.
The credit is thereafter available with respect to qualified fuel sold through
December 31, 2007.

    The Company believes that the K-Fuel Facility was placed in service in April
1998. Although the facility has operated and produced commercially salable
product, the Company has encountered certain difficulties in optimizing its
performance to achieve optimal and sustained operation. The Company has
addressed and resolved certain problems previously encountered, including a fire
at the facility and certain construction problems, including issues relating to
the flow of materials within the facility and the design and operation of
certain pressure-release equipment. The Company continues to experience certain
operational problems relating to tar and fines residue build-up within the
system during production and other product-quality issues related to product
dusting. The Company is actively exploring solutions to these problems. Because
the technology being developed at the facility is new and untested, no assurance
can be given that other difficulties will not arise, or that the Company will be
able to correct these problems and achieve optimal and sustained performance. In
addition, there can be no assurance that the Company will be able to realize a
benefit from the tax credit. The economic returns of the K-Fuel Facility
primarily result from tax credits on the facility's production of K-Fuel. The
K-Fuel Facility reports operating losses for financial reporting purposes,
primarily as a result of recording depreciation charges over the expected life
of the tax credit.

    The Company owns 4,250,000 shares of KFx common stock, or an 18% equity
interest. The Company has warrants, exercisable from January 1, 2000, through
July 1, 2001, to purchase 7,750,000 shares at $3.65 per share. In addition, the
Company has the right to purchase further shares at that time for the then fair
market value so that when added to all other shares of KFx common stock owned by
the Company, would result in the Company owning up to a total 51% equity
interest in KFx on a diluted basis. If all warrants and options are exercised,
the Company will be able to consolidate the results of operations of KFx. See
Note 2 of Notes to Consolidated Financial Statements in the Registrant's Fiscal
1998 Annual Report to Shareholders incorporated by reference into Item 8 hereof.

    In January 1997, the Company entered into a two-year project-development
agreement with Brant Energy L.L.C. (Brant) to develop and/or acquire natural gas
infrastructure assets, including a certain salt dome storage development project
located in southeastern Mississippi. The agreement provides for Brant to work
exclusively with the Company to identify and secure project opportunities such
as natural gas pipelines, storage facilities, gathering systems, and processing
plants, and provides Brant with the opportunity to contribute up to 10% of the
equity investment.

                                       8
<PAGE>

Biopesticides

    In May 1996, the Company, through Thermo Trilogy, acquired the assets of the
biopesticide division of W.R. Grace & Co. that develops, manufactures, and
markets environmentally friendly products used for pest control, for
approximately $8.1 million in cash and the assumption of certain liabilities. In
addition, the Company will pay a royalty fee of seven percent on annual sales of
the acquired business in excess of $14 million through the year 2000. In January
1997, Thermo Trilogy acquired substantially all of the assets of biosys, inc., a
biopesticide company, for approximately $11.2 million in cash and the assumption
of certain liabilities. In November 1997, Thermo Trilogy acquired the sprayable
bacillus thuringiensis (Bt)-biopesticide business of Novartis AG and its
affiliates for approximately $19.1 million in cash and the assumption of certain
liabilities.

    Through these acquisitions, Thermo Trilogy has developed a broad range of
biopesticide products. Products produced by Thermo Trilogy include botanical
extracts from the seed of tropical neem trees, microbial-based pesticides
(fungal-based insecticides and fungicides, bacculovirus, beneficial nematodes,
and Bts), insect pheromone-based products such as traps and lures, and
disease-free sugarcane planting stock. As compared to conventional chemical
pesticides, most of Thermo Trilogy's products are derived from natural origins
with minimal or no toxicity, and are environmentally friendly as they have
minimal or no residue and do not harm beneficial insects. Thermo Trilogy's
products are used primarily by agricultural farmers, consumers, and pest-control
operators and are sold through various distribution channels worldwide.

    Market acceptance of the Company's biopesticide products depends in part on
educating customers on the benefits of the Company's products compared to
conventional chemical pesticides. Although response from customers to date has
been positive, there is no assurance that the Company will be able to obtain
satisfactory levels of market acceptance.

Regulatory Matters

    The Company is subject to energy and environmental laws and regulations at
the federal, state, local, and international levels in connection with the
development, ownership, and operation of its plants. Federal laws and
regulations govern power purchase and sale transactions with regulated utility
companies, the types of fuel that may be used by a plant, the ownership of a
plant, the plant's efficiency, and the type and use of combustion and
pollution-control technology at a plant. State utility regulatory commissions
must establish the rates and, in some instances, other terms and conditions
under which public utilities purchase electric power from nonutility generators.
Under certain circumstances where specific exemptions are otherwise unavailable,
state utility regulatory commissions may have broad jurisdiction over nonutility
electric power plants. Energy-producing projects also are subject to federal,
state, local, and international laws, as well as administrative regulations
governing the emissions and other substances produced by a plant, and
geographical location, zoning, and land use. Further, the Company's natural gas
business activities are subject to regulation at the federal and state level. In
addition, the Company is subject to environmental and other laws and regulations
at the federal, state, and international level regarding the manufacture, use,
and sale of its biopesticide products.

    Public Utility Regulatory Policies Act of 1978, as amended (PURPA). The U.S.
market for nonutility generators selling electricity at wholesale rates
developed after the passage of PURPA. Prior to the passage of PURPA, regulated
utilities were the primary producers of electric power. PURPA was passed in the
wake of the energy crises of the 1970s as a means to increase energy efficiency
and foster the development of alternative power-generation technologies. The
1978 enactment of PURPA and the adoption of regulations thereunder by the
Federal Energy Regulatory Commission (FERC) provided incentives for the
development of cogeneration and small power-production facilities.

    A domestic electricity-generating project must be a Qualifying Facility
(QF), in order to take advantage of certain rate and regulatory incentives
provided by PURPA. To qualify as a QF, a plant must be a cogeneration facility
or small power producer (less than 80 megawatts) that burns waste or alternative
fuels, must satisfy certain engineering standards, and an electric utility, an
electric utility holding company, or its subsidiary must not own more than 50%
of

                                       9
<PAGE>

the economic interest in the plant. PURPA exempts QFs from the Public Utility
Holding Company Act of 1935 (PUHCA), most provisions of the Federal Power Act
(the FPA) and, except under certain limited circumstances, state laws concerning
rates or financial regulation of electric utilities. The Company believes that
each of the domestic operating plants that the Company currently owns and/or
operates meets the requirements under PURPA necessary for QF status.

    PURPA provides two primary benefits to QFs. First, most QFs are relieved of
compliance with certain extensive federal, state, and local regulations that
control the development, financial structure, and operation of any
energy-producing plant and the prices and terms on which energy may be sold by
the plant. Second, FERC's regulations promulgated under PURPA require that
electric utilities purchase electricity generated by QFs at a price based on the
purchasing utility's full "avoided cost." This is defined as the incremental
cost to an electric utility of electric energy or capacity that the utility
would have to generate itself or purchase from another source if it did not have
power available from the QF. FERC regulations also permit QFs and utilities to
negotiate agreements for utility purchases of power at rates lower than the
utility's avoided costs. While all of the Company's existing domestic operating
projects have long-term power-sales agreements at rates equal to or greater than
the utilities' current avoided costs, the current practice is for most
power-sales agreements to be awarded at a rate below avoided cost, due to
increasing competition for utility contracts. Moreover, whereas in the 1980s
power-sales agreements were often entered into as a result of negotiations
between a nonutility generator and a utility, increasingly, these agreements are
the subject of competitive bidding, which tends to lower the price that a
nonutility generator may receive for power. Currently, the demand for the
construction of cogeneration plants has significantly diminished in the U.S.;
therefore, the Company does not anticipate entering into any new construction
projects of this type in the near future.

    The Company and its operating plants must continue to comply with certain
regulatory requirements in order to maintain QF status; therefore, the Company
endeavors to design its projects, monitor its compliance with applicable
regulations, and choose its customers in a manner that minimizes the risks of
losing QF status for its projects. If an Operating Company were unable to
qualify as a QF or lost its QF status, the facility could be subject to
regulation as a public utility under the FPA and state laws and the Company
could become a public utility holding company by owning or controlling 10% or
more of a facility that would no longer be exempt from PUHCA, unless the
Operating Company qualified as an EWG under the National Energy Policy Act of
1992 (see "National Energy Policy Act" below). A loss of QF status could result
in defaults under the Operating Company leases, power-sales agreements, and
other contracts, which could have a material adverse effect on the Company.

    PUHCA. Under the PUHCA, any corporation, partnership, or other legal entity
that directly or indirectly owns, or controls the power to vote, 10% or more of
the outstanding voting securities of a "public utility company," or a company
that is a "holding company" of a public utility company, is subject to
registration with the Securities and Exchange Commission and regulation under
PUHCA, unless eligible for an exemption. PURPA provides that companies that only
own QFs are not public utility holding companies under PUHCA. A holding company
of a public utility company that is subject to registration is required by PUHCA
to limit its utility operations to a single integrated utility system and to
such other businesses as are reasonably incidental or economically necessary or
appropriate to the operation of such integrated public utility system. Approval
by the Securities and Exchange Commission is required for nearly all important
financial and business dealings of a registered holding company.

    FPA. The FPA grants FERC exclusive rate-making jurisdiction over wholesale
sales of electricity in interstate commerce. FERC has jurisdiction to establish
rates, to amend, revoke, or modify previously approved rates, and has
jurisdiction over certain corporate-related transactions. These rates may be
based on a cost-of-service approach or may be determined through competitive
bidding or negotiation, or, lastly, may be based on other criteria as long as
FERC finds the rates are "just and reasonable" and in the public interest. While
QFs under PURPA are exempt from the rate-making and certain other provisions of
the FPA, projects not qualifying for QF status would be subject to the FPA and
to FERC rate-making jurisdiction which may limit their flexibility in
negotiations with power purchasers.

    National Energy Policy Act.  In 1992, Congress enacted comprehensive
new energy policy legislation in its passage of the National Energy Policy
Act.  This law is primarily designed to foster competition in energy
production and provide competitive access to the transmission grid.  To
achieve these goals, the National Energy Policy Act

                                       10
<PAGE>

amended PUHCA to create EWGs, a new class of generating facility that is exempt
from public utility regulation under PUHCA. An EWG is an entity determined by
FERC to be exclusively engaged, directly or indirectly, in the business of
owning and/or operating certain eligible facilities and selling energy
wholesale. EWGs may own generating facilities of any size, use any fuel source,
and may be owned by utilities or nonutilities. EWGs generally may not own
transmission facilities. Domestic EWGs may not make retail sales of electric
energy. The National Energy Policy Act also provides new authority to FERC to
mandate that owners of electric transmission lines provide wheeling access to
nonutility generators at just and reasonable rates. Previously limited, wheeling
rights enhance the ability of nonutility generators to negotiate transmission
access and encourage development of facilities whose most feasible siting lies
outside the purchasing utility's service area. In 1996, FERC enhanced this
transmission access by issuing its Order Nos. 888 and 889. Order No. 888
required utilities to provide third parties wholesale open access to
transmission facilities on terms comparable to those that apply when utilities
use their own systems. Order No. 889 required transmission-owning utilities to
adopt procedures for an open access, same time information system regarding
their services. The Company believes that the National Energy Policy Act could
benefit the Company by expanding its ability to own and operate facilities that
do not qualify for QF status. However, this legislation may also result in
increased competition by allowing utilities and others to develop such
facilities without being subject to the constraints of PUHCA.

    State Regulation. State public utility commissions (PUCs) have broad
authority to regulate the rates, expenses, financings, and power-sale
transactions of regulated electric utilities. Since a power-sales agreement will
become a part of a utility's expenses (and therefore will be reflected in its
rates), sale agreements with nonutility generators typically fall under the
regulatory purview of PUCs. Recognizing the competitive nature of the
acquisition process, most PUCs will permit utilities to "pass through" expenses
associated with an independent power contract to the utility's retail customers.

    Nonutility generators (including EWGs) that are not QFs under PURPA are
considered to be public utilities in many states, and are subject to broad
regulation by PUCs, ranging from the requirement of certificates of public
convenience and necessity to regulation of organizational, accounting,
financial, and other corporate matters. Although FERC generally has exclusive
jurisdiction over the rates charged by such a producer to its wholesale
customers, PUCs have the ability, in practice, to influence the establishment of
such rates by asserting jurisdiction over the purchasing utility's ability to
pass through the resulting cost of the purchased power to its retail customers.
In addition, states may assert jurisdiction over the siting and construction of
facilities, and over the issuance of securities and the sale or other transfer
of assets by these facilities.

    Certain states have adopted or are considering legislation that will remove
many of the restrictions that currently limit the ability of nonutility
generators to sell electrical power directly to industrial and commercial
customers. The Company believes that the removal of these restrictions will
result in greater competition and greater opportunities to negotiate power-sale
agreements with industrial and commercial customers and may result in state PUCs
attempting to reduce, or forcing the renegotiation of, fixed rates or contracts.
Although the Company believes that the trend in the power market is toward
deregulation, to date, only a few states have passed any such legislation, and
there can be no assurance that any further similar legislation will ultimately
be passed.

    Other Regulatory Matters. Different aspects of the Company's natural gas
business activities are subject to regulation at the federal and state level.
FERC has jurisdiction over, among other things, the construction and operation
of pipeline and related facilities used in the transportation and sale of
natural gas in interstate commerce, including the construction, extension,
expansion, or abandonment of such facilities. FERC also has jurisdiction over
the rates and charges for the transportation of natural gas in interstate
commerce and the sale by a natural gas company of natural gas in interstate
commerce for resale. FERC thus would regulate any interstate transportation
business in which the Company engages. The Company does not anticipate engaging
in interstate pipeline transportation subject to FERC jurisdiction. Natural gas
marketers and brokers generally are not subject to federal or state regulation.
Natural gas storage activities that are in interstate commerce also fall within
FERC's transportation jurisdiction. FERC must grant prior approval for the
construction or abandonment of interstate storage facilities, and also regulates
the

                                       11
<PAGE>


rates and charges of interstate storage services. If storage facilities are not
engaged in interstate commerce, FERC has no jurisdiction. Various states do,
however, regulate such intrastate storage activities. Furthermore, FERC
generally does not have jurisdiction over gas gathering activities, and the
Company will attempt to obtain, and maintain, FERC nonjurisdiction status for
any gas gathering activities. However, various states regulate the rates and
terms of service of gas gathering companies.

    EPA and Related-state Regulation. No pesticide may be manufactured, used, or
sold without federal and state approvals. Such approvals, called registrations,
must be obtained for each individual product formulation for use on specific
pests for specific crops. Adding new uses, new pests, new crops, or new
formulations requires submission of additional applications or data for
approval.

    The U.S. Environmental Protection Agency (EPA) regulates pesticides under
the Federal Insecticide, Fungicide, and Rodenticide Act and implementing EPA
regulations. To obtain a pesticide registration from the EPA, the applicant must
submit extensive field test data evidencing product effectiveness, nontargeted
organism testing, environmental impact studies, residue chemistry, and toxicity
studies on plants and animals. Initial product registrations can take many years
to obtain, and an applicant may incur considerable additional delay and expense
if the EPA requests further testing and data. To promote the development and use
of biopesticides, the EPA has established special guidelines for their
registration which are set out in subdivision M of the EPA's Pesticide
Assessment Guidelines which generally require less time and expense than that
required for synthetic pesticides.

    As a part of the pesticide registration process, the applicant must submit
labeling data describing the chemical composition of the pesticide,
concentrations, manufacturer directions for application, pest and crop use, and
cautionary and warning statements to be put on all packaging of the pesticides.
All pesticide packages must contain the approved label and no changes can be
made to the label without EPA approval.

    Pesticide registrations must also be obtained from each state where the
pesticide will be sold. Some states, such as California, which represents an
important market for the Company's products, have their own extensive testing
and pesticide registration procedures and may impose additional restrictions on
the use of the pesticide in such state beyond those imposed by the EPA
regulations. Other states simply follow the EPA registration and labeling
guidelines.

    Foreign countries may also require extensive testing and data submission
before pesticides can be manufactured or sold in such foreign country. The
relevant regulations vary from country to country and may be stricter and more
difficult and costly to comply with than EPA's regulations. A number of the
Company's products are registered for sale in foreign countries.

    The Company's activities may also be subject to regulation under other
state, federal, and foreign government laws and regulations governing employee
and public health and safety, environmental pollution, clean water, disposal of
hazardous wastes, manufacture of chemicals, product liability, food and
agriculture applications, and public disclosure of the use of chemicals.

    (ii)   New Products

    Not applicable.

    (iii)  Raw Materials

    Energy

    Fuel and operating supplies purchased by the Company's independent power
projects are either available from a number of different suppliers or from
alternative sources that could be developed without a material adverse effect on
the Company. To date, the Company has experienced no difficulties in obtaining
these materials.

                                       12
<PAGE>

    The K-Fuel Partnership is purchasing coal feed stock for the K-Fuel
Facility's needs from Dry Fork Coal Company on a spot-market basis. The Dry Fork
mine is located on property adjacent to the K-Fuel Facility.

    Biopesticides

    Thermo Trilogy relies on overseas producers of the raw materials for its
neem-based products and on third parties to manufacture some of its products. In
particular, Thermo Trilogy's sole supplier of neem products is P.J. Margo Pvt.
Ltd., a joint venture in India in which Thermo Trilogy holds a fifty percent
interest, pursuant to an exclusive supply contract that expires in 2001. To
date, Thermo Trilogy has experienced no difficulties in obtaining these raw
materials; however, there is no assurance that Thermo Trilogy will have an
uninterrupted supply of raw materials or that third-party manufacturers will
produce the products at competitive prices.

    (iv)   Patents, Licenses, and Trademarks

    Energy

    The K-Fuel Partnership, which is 95%-owned by the Company, has been granted,
in exchange for certain future contingent royalty payments, a nonexclusive right
and license to use certain patented clean coal technology owned by KFx.

    Biopesticides

    The Company has numerous U.S. patents and corresponding foreign patents in
various areas related to process development, fermentation, formulation, or
applications of current commercial products. Additionally, various patent
applications are pending in the U.S. and foreign countries. The Company also
relies on trade secrets and proprietary know-how which it seeks to protect
through confidentiality agreements with employees, collaborators, and
consultants.

    The Company's patent portfolio includes several patents related to Bt
technology. The Company has obtained licenses or sublicenses for a number of
patent families in areas related to Bt strain construction and formulation
development. The Company also relies on trade secret protection for its
extensive know-how in quality control.

    The Company also has additional patents that have been granted for neem oil
and azadirachtin technologies. The Company also has patent positions covering
nematode and fungi technologies.

    The Company has an exclusive license for the fungus PFR-97. Additionally,
the Company has a sublicense agreement for a unique strain of a bacculovirus
from Novartis.

    (v)    Seasonal Influences

     Energy

    The Energy segment earns a disproportionately high share of its income in
the months of May through October due to rate structures under the power-sale
agreements relating to its California plants, which provide strong incentives to
operate during this period of high demand. Conversely, the Energy segment
historically has operated at a marginal profit during its second fiscal quarter
due to the rate structure under these agreements.

    Biopesticides

    The Biopesticide segment currently markets its products predominantly for
use in the northern hemisphere, where the growing season generally runs from
March to October. Therefore, the seasonal nature of agriculture will cause the
Biopesticide segment's product sales to be concentrated during such period and
will result in substantial variations in quarter-to-quarter results.

    (vi)   Working Capital Requirements

    There are no special inventory requirements or credit terms extended to
customers that would have a material adverse effect on the Company's working
capital.

                                       13
<PAGE>

    (vii)  Dependency on a Single Customer

     Energy

    The Company derived 10% or more of its revenues during the past three years
from its three most significant electric utility customers: PSNH, SCE, and PG&E.
Revenues from these three customers as a percentage of total revenues were
approximately 16%, 30%, and 30%, respectively, in fiscal 1998.

    (viii) Backlog

    Biopesticides

    The Company maintains minimal backlog. Most orders for its biopesticide
products are shipped out of inventory within a short period of time.

    (ix)   Government Contracts

    Not applicable.

    (x)    Competition

    Energy

    The worldwide independent power market now consists of numerous companies,
ranging from small startups to multinational industrial companies. In addition,
a number of regulated utilities have created subsidiaries that compete as
nonutility generators. Nonutility generators often specialize in market
"niches," such as a specific technology or fuel (i.e., gas-fired cogeneration,
refuse-to-energy, hydropower, geothermal, wind, solar, wood, or coal) or a
specific region of the country where they believe they have a market advantage.
However, many nonutility generators seek to develop projects powered by the best
fuel available. Many companies in this market have substantially greater
financial, technical, and operational resources than the Company. The Company
competes primarily on the basis of project experience, technical expertise,
capital resources, and power pricing.

    Biopesticides

     The Company currently has virtually no competition in the neem- and
azadirachtin-based product market in the U.S. In the microbial pesticides market
(Bts, viruses, fungi) the Company has a number of competitors, including major
chemical companies. The pheromone market is fragmented and is comprised of
dozens of small operating companies. The Company has a significant share of the
nematode market. The Company's products compete primarily based on performance,
quality, and price.

    (xi)   Research and Development

    Research and development expenses for the Company were $2,398,000,
$1,638,000, and $693,000 in fiscal 1998, 1997, and 1996, respectively.

    (xii)  Environmental Protection Regulation

    The construction and operation of power projects are subject to extensive
federal, state, and local laws and regulations adopted for the protection of
health, safety, and the environment, and to regulate land use. The laws and
regulations applicable to the Company primarily involve discharges and emissions
into the water and air, and the use of water, but can also include wetlands
preservation, endangered species, waste disposal, and noise regulation. These



                                       14
<PAGE>

laws and regulations in many cases require a lengthy and complex process of
obtaining licenses, permits, and approvals from federal, state, and local
agencies. If such laws and regulations are changed and the Company's facilities
are not grandfathered, extensive modifications to project technologies and
facilities could be required.

    The Company does not believe that it will be required to make material
capital expenditures to comply with existing environmental regulations.

    (xiii) Number of Employees

    As of October 3, 1998, the Company employed, directly and through its
Operating Companies and subsidiary, a total of 382 employees. None of the
employees of the Company or the Operating Companies is represented by a labor
union, and the Company considers its relations with its employees to be good.

(d) Financial Information about Exports by Domestic Operations and about
Foreign Operations

    Not applicable.


(e) Executive Officers of the Registrant

     Name                 Age  Present Title (Fiscal Year First
                               Became Executive Officer)
     -----------------------------------------------------------------

     Brian D. Holt        49   Chief Executive Officer and President
                                 (1994)
     John N. Hatsopoulos* 64   Chief Financial Officer and Senior
                                 Vice President (1989)
     Parimal S. Patel     55   Executive Vice President (1989)
     Brian P. Chatlosh    39   Vice President, Business Development
                                 (1996)
     Robert R. Fini       56   Vice President, Technical Services
                                 (1994)
     Floyd M. Gent        49   Vice President; President, Clean
                                 Fuels Division (1994)
     John T. Miller       52   Vice President; President, Clean
                                 Power Division (1998)
     Randall W. Miselis   45   Vice President, Accounting and
                                 Administration (1996)
     Paul F. Kelleher     56   Chief Accounting Officer (1989)

    * John N. Hatsopoulos and George N. Hatsopoulos, a director of the
      Company, are brothers.  John N. Hatsopoulos will retire as Chief
      Financial Officer and Senior Vice President effective December 31,
      1998.  Theo Melas-Kyriazi has been appointed to succeed Mr.
      Hatsopoulos as Chief Financial Officer.

    All of the Company's executive officers are elected annually by the Board of
Directors and serve until their successors are elected and qualified. All
executive officers, except Messrs. Holt, Chatlosh, Gent, Miller, and Miselis
have held comparable positions for at least five years either with the Company
or Thermo Electron. Mr. Holt has been President and Chief Executive Officer of
the Company since February 1994, and a Director since January 1995. For more
than five years prior to that time, he was President and Chief Executive Officer
of Pacific Generation Company, a financier, builder, owner, and operator of
independent power facilities. Mr. Chatlosh has been Vice President, Business
Development since January 1996 and has worked for the Company in various
managerial capacities in business development since 1993. Prior to joining the
Company, Mr. Chatlosh worked for Oxbow Power Corporation, an independent power
company, in various managerial capacities in project development from 1986 to
1992. Mr. Gent has been a Vice President of the Company since September 1994.
For more than five years prior to that time, Mr. Gent held various positions,
most recently as Executive Vice President, at KTI Environmental Group, a
developer, owner, and operator of waste-to-energy plants. Mr. Miller has been a
Vice President of the Company since March 1998. Prior to joining the Company, he
served as President and Chief Executive Officer of Pacific Generation Company
from 1994 to 1998, overseeing its expansion into international generation
projects. From 1990 to 1994, he served as Vice President of Business Development
of Pacific Generation Company, and from 1987 to 1990, he served

                                       15
<PAGE>

as its Vice President of Operations.  Mr. Miselis has been Vice President
of Accounting and Administration since January 1996 and has worked for the
Company in various accounting capacities since November 1988.  Messrs.
Hatsopoulos and Kelleher are full-time employees of Thermo Electron, but
devote such time to the affairs of the Company as the Company's needs
reasonably require.  Mr. Melas-Kyriazi joined Thermo Electron in 1986 as
Assistant Treasurer, and became Treasurer in 1988.  He was named President
and Chief Executive Officer of ThermoSpectra Corporation, a public
subsidiary of Thermo Instrument Systems Inc., in 1994.  In 1997, he became
Vice President of Corporate Strategy for Thermo Electron.  Mr.
Melas-Kyriazi will remain a full-time employee of Thermo Electron and,
when he succeeds Mr. Hatsopoulos as Chief Financial Officer, will also
devote such time to the affairs of the Company as the Company's needs
reasonably require.

Item 2.    Properties

    Energy

    The Company's corporate headquarters are located in Waltham, Massachusetts,
and consist of approximately 15,000 square feet that are occupied pursuant to a
lease expiring in 2003. The Company also leases office space in Prague, Czech
Republic; Milan, Italy; Roseville, California; Houston, Texas; and Dallas,
Texas. The Company's other properties consist of the power plants described
under "Operating Projects" and "Projects in Development." The Company owns all
of the land on which the plants are built. The K-Fuel Facility is located on
approximately 80 acres of land inside the rail loop in Fort Union Mine, in
Campbell County, Wyoming, approximately 5 miles northeast of Gillette, Wyoming.
The K-Fuel Facility is comprised of three buildings totaling approximately 7,100
square feet.

    The Company's California plants are located in areas where there is a risk
of potentially significant earthquake activity. Projects that the Company
develops in the future may also be located in areas where there is earthquake
risk. The Company's earthquake insurance is not sufficient to cover all
potential losses and there can be no assurance that such insurance will continue
to be available on reasonable terms.

    Biopesticides

    Thermo Trilogy's corporate headquarters are located in Columbia, Maryland,
where it leases 25,000 square feet of space for office, laboratory, and
warehouse use. Thermo Trilogy also leases a 26,000 square foot building, in
which it has built a fermentation/formulation facility, in Decatur, Illinois.
Thermo Trilogy owns an 80,000 square foot fermentation/formulation facility in
Wasco, California. Thermo Trilogy's wholly owned subsidiary in the U.K. leases a
20,000 square foot pheromone trap and lure manufacturing facility.

Item 3.    Legal Proceedings

    Not applicable.

Item 4.    Submission of Matters to a Vote of Security Holders

    Not applicable.


                                       16
<PAGE>

                                  PART II
Item 5.    Market for Registrant's Common Equity and Related Shareholder Matters

    Information concerning the market and market price for the Registrant's
Common Stock, $.10 par value, and dividend policy is included under the sections
labeled "Common Stock Market Information" and "Dividend Policy" in the
Registrant's Fiscal 1998 Annual Report to Shareholders and is incorporated
herein by reference.

Item 6.    Selected Financial Data

    The information required under this item is included under the sections
labeled "Selected Financial Information" and "Dividend Policy" in the
Registrant's Fiscal 1998 Annual Report to Shareholders and is incorporated
herein by reference.

Item 7.    Management's Discussion and Analysis of Financial Condition and
Results of Operations

    The information required under this item is included under the heading
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" in the Registrant's Fiscal 1998 Annual Report to Shareholders and is
incorporated herein by reference.

Item 7A.   Quantitative and Qualitative Disclosure About Market Risk

    The information required under this item is included under the heading
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" in the Registrant's Fiscal 1998 Annual Report to Shareholders and is
incorporated herein by reference.

Item 8.    Financial Statements and Supplementary Data

    The Registrant's Consolidated Financial Statements and Supplementary Data
are included in Registrant's Fiscal 1998 Annual Report to Shareholders and are
incorporated herein by reference.

Item 9.    Changes in and Disagreements with Accountants on Accounting and
Financial Disclosures

    Not applicable.

                                       17
<PAGE>

                                  PART III

Item 10.   Directors and Executive Officers of the Registrant

    The information concerning Directors required under this item is
incorporated herein by reference from the material contained under "Election of
Directors" in the Registrant's definitive proxy statement to be filed with the
Securities and Exchange Commission pursuant to Regulation 14A, not later than
120 days after the close of the fiscal year. The information concerning
delinquent filers pursuant to Item 405 of Regulation S-K is incorporated herein
by reference from the material contained under the heading "Section 16(a)
Beneficial Ownership Reporting Compliance" in the Registrant's definitive proxy
statement to be filed with the Securities and Exchange Commission pursuant to
Regulation 14A, not later than 120 days after the close of the fiscal year.

Item 11.   Executive Compensation

    The information required under this item is incorporated herein by reference
from the material contained under the caption "Executive Compensation" in the
Registrant's definitive proxy statement to be filed with the Securities and
Exchange Commission pursuant to Regulation 14A, not later than 120 days after
the close of the fiscal year.

Item 12.   Security Ownership of Certain Beneficial Owners and Management

    The information required under this item is incorporated herein by reference
from the material contained under the caption "Stock Ownership" in the
Registrant's definitive proxy statement to be filed with the Securities and
Exchange Commission pursuant to Regulation 14A, not later than 120 days after
the close of the fiscal year.

Item 13.   Certain Relationships and Related Transactions

    The information required under this item is incorporated herein by reference
from the material contained under the caption "Relationship with Affiliates" in
the Registrant's definitive proxy statement to be filed with the Securities and
Exchange Commission pursuant to Regulation 14A, not later than 120 days after
the close of the fiscal year.


                                       18
<PAGE>

                                  PART IV

Item 14.   Exhibits, Financial Statement Schedules, and Reports on Form 8-K

    (a, d) Financial Statements and Schedule

           (1) The consolidated financial statements set forth in the list below
           are filed as part of this Report.

           (2) The consolidated financial statement schedule set forth in the 
           list below is filed as part of this Report.

           (3) Exhibits filed herewith or incorporated herein by reference are 
           set forth in Item 14(c) below.

           List of Financial Statements and Schedule Referenced in this Item 14

           Information incorporated by reference from Exhibit 13 filed herewith:

                Consolidated Statement of Income
                Consolidated Balance Sheet
                Consolidated Statement of Cash Flows
                Consolidated Statement of Shareholders' Investment
                Notes to Consolidated Financial Statements
                Report of Independent Public Accountants

           Financial Statement Schedules filed herewith:

                Schedule I:  Condensed Financial Information of the Registrant

           All other schedules are omitted because they are not applicable or
       not required, or because the required information is shown either in the
       financial statements or in the notes thereto.

    (b)    Reports on Form 8-K

           None.

    (c)    Exhibits

           See Exhibit Index on the page immediately preceding exhibits.

                                       19
<PAGE>

                                 SIGNATURES

    Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed by
the undersigned, thereunto duly authorized.

Date:  December 16, 1998                  THERMO ECOTEK CORPORATION

                                          By:/s/ Brian D. Holt
                                             -----------------------------
                                             Brian D. Holt
                                             President and Chief Executive
                                             Officer

    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 indicated, as of December 16, 1998.

Signature                                 Title

By: /s/ Brian D. Holt                     President, Chief Executive Officer,
    -------------------------------       and Director
    Brian D. Holt

By: /s/ John N. Hatsopoulos               Chief Financial Officer, 
    -------------------------------       Senior Vice President, and Director 
    John N. Hatsopoulos                          

By: /s/ Paul F. Kelleher                  Chief Accounting Officer
    -------------------------------       
    Paul F. Kelleher

By: /s/ Frank Jungers                     Chairman of the Board and Director
    -------------------------------       
    Frank Jungers

By: /s/ Jerry P. Davis                    Director
    -------------------------------      
    Jerry P. Davis

By: /s/ Dr. George N. Hatsopoulos         Director
    -------------------------------       
    Dr. George N. Hatsopoulos

By: /s/ William A. Rainville              Director
    -------------------------------       
    William A. Rainville

By: /s/ Susan F. Tierney                  Director
    -------------------------------       
    Susan F. Tierney

                                       20
<PAGE>

                  Report of Independent Public Accountants

To the Shareholders and Board of Directors of Thermo Ecotek Corporation:

    We have audited, in accordance with generally accepted auditing standards,
the consolidated financial statements included in Thermo Ecotek Corporation's
Annual Report to Shareholders incorporated by reference in this Form 10-K, and
have issued our report thereon dated November 9, 1998 (except with respect to
the matter discussed in Note 17, as to which the date is November 24, 1998). Our
audits were made for the purpose of forming an opinion on those statements taken
as a whole. The schedule listed in Item 14 on page 19 is the responsibility of
the Company's management and is presented for purposes of complying with the
Securities and Exchange Commission's rules and is not part of the basic
consolidated financial statements. This schedule has been subjected to the
auditing procedures applied in the audits of the basic consolidated financial
statements and, in our opinion, fairly states in all material respects the
consolidated financial data required to be set forth therein in relation to the
basic consolidated financial statements taken as a whole.



                                           Arthur Andersen LLP



Boston, Massachusetts
November 9, 1998

                                       21
<PAGE>

SCHEDULE I

                         THERMO ECOTEK CORPORATION
               Condensed Financial Information of Registrant
                        Unconsolidated Balance Sheet


(In thousands)                                                Oct. 3, Sept. 27,
                                                                 1998      1997
- -------------------------------------------------------------------------------

ASSETS
Current Assets:
  Cash and cash equivalents                                   $22,732   $69,465
  Accounts and notes receivable from subsidiaries               1,910     3,789
  Prepaid income taxes and prepaid expenses                    11,548     4,351
  Current portion of note receivable and other
   current assets                                                 330        23
                                                             --------  --------

                                                               36,520    77,628
                                                             --------  --------

Investment in Subsidiaries (on the equity method)             319,279   233,513
                                                             --------  --------

Office Equipment, at Cost                                         322       237
Less:  Accumulated Depreciation                                   (96)     (184)
                                                             --------  --------

                                                                  226        53
                                                             --------  --------

Long-term Available-for-sale Investment, at Quoted              
  Market Value (amortized cost of $8,504)                       8,502    12,497
                                                             --------  --------
  
Deferred Debt Expense                                           1,090     1,432
                                                             --------  --------

Due from Parent Company                                             -    10,164
                                                             --------  --------

                                                             $365,617  $335,287
                                                             ========  ========

                                       22
<PAGE>

                         THERMO ECOTEK CORPORATION
               Condensed Financial Information of Registrant
                  Unconsolidated Balance Sheet (continued)


(In thousands)                                                Oct. 3, Sept. 27,
                                                                 1998   1997
- -------------------------------------------------------------------------------

LIABILITIES AND SHAREHOLDERS' INVESTMENT
Current Liabilities:
  Accounts payable                                            $     -    $  162
  Accrued expenses                                              9,366     6,048
  Due to parent company                                         2,251     1,219
                                                             --------  --------

                                                               11,617     7,429
                                                             --------  --------

Long-term Obligations:
  Noninterest-bearing subordinated convertible                  2,450    12,148
   debentures
  4% Subordinated convertible debentures, due to                    -    68,500
   parent company
  4.875% Subordinated convertible debentures                   44,950    50,000
                                                             --------  --------

                                                               47,400   130,648
                                                             --------  --------

Deferred Income Taxes                                          56,968    49,934
                                                             --------  --------


Shareholders' Investment:
  Common stock                                                  3,782     2,598
  Capital in excess of par value                              175,673    95,573
  Retained earnings                                            98,802    67,593
  Treasury stock                                              (28,735)  (20,872)
  Cumulative translation adjustment                               112       (52)
  Net unrealized gain (loss) on available-for-sale                 (2)    2,436
   investment
                                                             --------  --------

                                                              249,632   147,276
                                                             --------  --------
                                                             $365,617  $335,287
                                                             ========  ========


                                       23
<PAGE>

                         THERMO ECOTEK CORPORATION

               Condensed Financial Information of Registrant
                     Statement of Unconsolidated Income



                                                              Year Ended
                                                      -------------------------
(In thousands)                                       Oct. 3, Sept. 27 Sept. 28,
                                                        1998     1997      1996
- -------------------------------------------------------------------------------

Revenues                                             $ 1,962 $  8,200 $       -
Equity in Earnings of Subsidiaries                    50,401   39,817    34,148
                                                     ------- -------- ---------

                                                      52,363   48,017    34,148
                                                     ------- -------- ---------

General and Administrative Expenses                   10,379   10,219     9,404
                                                     ------- -------- ---------

Operating Income                                      41,984   37,798    24,744
Interest Income (Expense), Net                        (1,342)    (838)      307
Gain on Sale of Stock by Subsidiary                    6,269        -         -
                                                     ------- -------- ---------

Income Before Provision for Income Taxes              46,911   36,960    25,051
Provision for Income Taxes                            15,702   14,415     7,271
                                                     ------- -------- ---------

Net Income                                           $31,209 $ 22,545 $  17,780
                                                     ======= ======== =========

                                       24
<PAGE>

                         THERMO ECOTEK CORPORATION

               Condensed Financial Information of Registrant
                   Statement of Unconsolidated Cash Flows



                                                            Year Ended
                                                      -----------------------
(In thousands)                                        Oct. 3,Sept. 27 Sept. 28,
                                                        1998     1997      1996
- -------------------------------------------------------------------------------

Operating Activities:
  Net income                                         $31,209 $ 22,545 $  17,780
  Adjustments to reconcile net income to net
   cash used in operating activities:
    Depreciation and amortization                        258      513       182
    Deferred revenue                                       -   (8,200)        -
    Deferred income tax expense                        7,315   10,715     3,086
    Equity in earnings of subsidiaries               (50,401) (39,817)  (34,148)
    Gain on sale of stock by subsidiary               (6,269)       -         -
    Changes in current accounts:
      Accounts and notes receivable from               2,139     (906)      282
       subsidiaries
      Other assets                                        94       55     1,520
      Accounts payable                                  (551)      48        18
      Accrued expenses                                   101       99      (804)
      Due (to) from parent company                       (98)   3,471     5,181
                                                     ------- -------- ---------

       Net cash used in operating activities         (16,203) (11,477)   (6,903)
                                                     ------- -------- ---------

Investing Activities:
  Acquisitions, net of cash acquired                 (19,100) (10,865)   (8,088)
  Purchase of available-for-sale investments               -   (2,500)   (3,004)
  Purchases of property, plant, and equipment           (219)     (15)       (8)
  Distribution from (investment in)                  (16,361)  13,315    (9,828)
subsidiaries
                                                     ------- -------- ---------

       Net cash used in investing activities         (35,680)     (65)  (20,928)
                                                     ------- -------- ---------

Financing Activities:
  Net proceeds from issuance of subordinated               -   48,470    35,942
   convertible debentures
  Purchases of Company common stock                  (10,248) (19,743)        -
  Net proceeds from issuance of Company and           15,458     (417)    5,026
   subsidiary common stock
                                                     ------- -------- ---------

       Net cash provided by financing activities       5,210   28,310    40,968
                                                     ------- -------- ---------


Exchange Rate Effect on Cash                             (60)     (31)        -
                                                     ------- -------- ---------

Increase (Decrease) in Cash and CashEquivalents      (46,733)  16,737    13,137
Cash and Cash Equivalents at Beginning of Year        69,465   52,728    39,591
                                                     ------- -------- ---------

Cash and Cash Equivalents at End of Year             $22,732 $ 69,465 $  52,728
                                                     ======= ======== =========


                                       25
<PAGE>

                               EXHIBIT INDEX
Exhibit
Number     Description of Exhibit

2.1        Asset Purchase Agreement among Thermo Trilogy Corporation, Thermo
           Ecotek International Holdings, Inc., and W.R. Grace & Co. - Conn.
           dated March 5, 1996 (filed as Exhibit 2 to the Registrant's Quarterly
           Report on Form 10-Q for the quarter ended March 30, 1996 [File No.
           1-13572] and incorporated herein by reference).

2.2        Asset Purchase Agreement among Thermo Trilogy Corporation, biosys, 
           inc., Crop Genetics International Corporation, and AgriDyne 
           Technologies, Inc. dated December 24, 1996 (filed as Exhibit 2 to 
           the Registrant's Current Report on Form 8-K filed January 31, 1997 
           [File No. 1-3572] and  incorporated herein by reference).

3.1        Certificate of Incorporation, as amended, of the Registrant
           (filed as Exhibit 3.1 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and incorporated
           herein by reference).

3.2        By-Laws of the Registrant (filed as Exhibit 3.2 to the Registrant's
           Transition Report on Form 10-K for the nine months ended September
           30, 1995 [File No. 1-13572] and incorporated
           herein by reference).

4.1        Fiscal Agency Agreement dated as of March 14, 1996, among the
           Registrant, Thermo Electron Corporation, and Chemical Bank as fiscal
           agent, relating to $37 million principal amount of
           noninterest-bearing subordinated convertible debentures due 2001
           (filed as Exhibit 4 to the Registrant's Quarterly Report on Form 10-Q
           for the quarter ended March 30, 1996 [File No. 1-13572] and
           incorporated herein by reference).

4.2        Fiscal Agency Agreement dated as of April 15, 1997, among the
           Registrant,   Thermo  Electron  Corporation,  and  Bankers  Trust
           Company as fiscal agent, relating to $50 million principal amount
           of 4 7/8% Convertible  Subordinated Debentures due 2004 (filed as
           Exhibit 4 to the  Registrant's  Quarterly Report on Form 10-Q for
           the  quarter  ended  March  29,  1997  [File  No.   1-13572]  and
           incorporated herein by reference).


10.1       Asset Transfer Agreement between Thermo Electron Corporation and the
           Registrant dated  January 2, 1990  (filed as Exhibit  10.1 to the
           Registrant's  Registration  Statement on Form S-1 [Reg.  No.
           33-86682] and incorporated herein by reference).

10.2       Corporate Services Agreement dated January 3, 1993, between Thermo
           Electron Corporation and the Registrant (filed as Exhibit 10.2 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.3       Thermo Electron Corporate Charter as amended and restated effective
           January 3, 1993 (filed as Exhibit 10.3 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.4       Amended and Restated Tax Allocation Agreement dated as of December 4,
           1996, between Thermo Electron and the Registrant (filed as Exhibit
           10.4 to the Registrant's Report on Form 10-K for the fiscal year
           ended September 28, 1996 [File No. 1-13572] and incorporated herein
           by reference).

10.5       Master Repurchase Agreement dated as of January 1, 1994, between the
           Registrant and Thermo Electron Corporation (filed as Exhibit 10.1 to
           the Registrant's Quarterly Report on Form 10-Q for the quarter ended
           January 3, 1998 [File No. 1-13572] and incorporated herein by
           reference).

                                       26
<PAGE>


Exhibit
Number     Description of Exhibit

10.6       Amended and Restated Master Reimbursement and Loan Agreement dated as
           of December 19, 1997, between Thermo Electron and the Registrant
           (filed as Exhibit 10.2 to the Registrant's Quarterly Report on Form
           10-Q for the quarter ended January 3, 1998 [File No. 1-13572] and
           incorporated herein by reference).

10.7       Lease Agreement dated as of December 2, 1991, between Thermo Electron
           and the Registrant (filed as Exhibit 10.7 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.8       Purchase and sale of $38,500,000 principal amount 4% subordinated
           convertible note due 2001 (filed as Exhibit 10.8 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.9       Purchase and sale of $30,000,000 principal amount 4% subordinated
           convertible note due 2001 (filed as Exhibit 10.9 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.10      Power Purchase Agreement between Mendota Biomass Power, Ltd. and
           Pacific Gas and Electric Company dated May 7, 1984 (filed as Exhibit
           10.10 to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-86682] and incorporated herein by reference).

10.11      Project Lease between Chrysler Capital Corporation and Mendota
           Biomass Power, Ltd. dated October 30, 1989 (filed as Exhibit 10.11 to
           the Registrant's Registration Statement on Form S-1 [Reg. No.
           33-86682] and incorporated herein by reference).

10.12      First Amendment to Project Lease between Chrysler Capital Corporation
           and Mendota Biomass Power, Ltd., dated June 30, 1995 (filed as
           Exhibit 1 to the Registrant's Current Report on Form 8-K dated June
           30, 1995 and incorporated herein by reference).

10.13      Mendota Biomass Power, Ltd. Limited Partnership Agreement dated
           December 10, 1986 (filed as Exhibit 10.12 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.14      Rate Order and Interconnection Agreement between Whitefield Power and
           Light Company and Public Service Company of New Hampshire dated
           September 4, 1986 (filed as Exhibit 10.13 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.15      Wood Supply Contract between North County Procurement, Inc. and
           Whitefield Power and Light Company dated June 4, 1993 (filed as
           Exhibit 10.14 to the Registrant's Registration Statement on Form S-1
           [Reg. No. 33-86682] and incorporated herein by reference).

10.16      Leasing Agreement between BankBoston Leasing Services Inc. and
           Gorbell Thermo Electron Power Company dated December 24, 1987
           (filed as Exhibit 10.15 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and incorporated
           herein by reference).

10.17      Amended and Restated Wood Supply Contract between Linkletter and Sons
           and Gorbell Thermo Electron Power Company dated January 15, 1993
           (filed as Exhibit 10.16 to the Registrant's Registration Statement on
           Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).


                                       27
<PAGE>

Exhibit
Number     Description of Exhibit

10.18      Power Purchase Agreement between Gorbell Thermo Electron Power
           Company and Central Maine Power Company dated February 3, 1984, as
           amended (filed as Exhibit 10.17 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.19      Reduced Power Operation Agreement between Gorbell Thermo Electron
           Power Company and Central Maine Power Company dated January 14, 1994
           (filed as Exhibit 10.18 to the Registrant's Registration Statement on
           Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.20      Joint Venture Agreement establishing Gorbell Thermo Electron Power
           Company dated September 13, 1985 (filed as Exhibit 10.19 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.21      Leasing Agreement between BankBoston Leasing Services, Inc. and
           Hemphill Power and Light Company dated December 23, 1987 (filed as
           Exhibit 10.20 to the Registrant's Registration Statement on Form S-1
           [Reg. No. 33-86682] and incorporated herein by reference).

10.22      Rate Order Support Agreement between Hemphill Power and Light 
           Company and Thermo Electron dated December 23, 1987 (filed as 
           Exhibit 10.21 to the Registrant's Registration Statement on Form 
           S-1 [Reg. No. 33-86682] and incorporated herein by reference).

10.23      Wood Supply Contract between Durgin & Crowell Lumber Company, Inc.
           and Hemphill Power and Light Company dated June 4, 1985 (filed as
           Exhibit 10.22 to the Registrant's Registration Statement on Form S-1
           [Reg. No. 33-86682] and incorporated
           herein by reference).

10.24      Fuel Supply Contract between Springfield Management Company and
           Hemphill Power and Light Company dated June 4, 1985, as amended
           (filed as Exhibit 10.23 to the Registrant's Registration Statement on
           Form S-1 [Reg. No. 33-86682] and incorporated
           herein by reference).

10.25      Rate Order and Interconnection Agreement between Hemphill Power and
           Light Company and Public Service Company of New Hampshire dated June
           26, 1986 (filed as Exhibit 10.24 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.26      Joint Venture Agreement establishing Hemphill Power and Light Company
           dated June 4, 1985 (filed as Exhibit 10.25 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.27      Letter Agreement dated July 15, 1988, among the partners of Hemphill
           Power and Light Company amending various agreements (filed as Exhibit
           10.26 to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-86682] and incorporated
           herein by reference).

10.28      Letter Agreement dated January 1, 1990, between the partners of
           Hemphill Power and Light Company (filed as Exhibit 10.27 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.29      Assignment and Assumption Agreement of Delano II plant by Delano
           Energy Company, Inc. dated December 1, 1993 (filed as Exhibit 10.28
           to the Registrant's Registration Statement on Form S-1 [Reg. No.
           33-86682] and incorporated herein by reference).

                                       28
<PAGE>

Exhibit
Number     Description of Exhibit

10.30      Loan Agreement between California Pollution Control Financing
           Authority ("CPCFA") and Delano Energy Company, Inc. dated August 1,
           1989, as supplemented on May 1, 1990 (Delano I; filed as Exhibit
           10.29 to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-86682] and incorporated herein by reference).

10.31      Indenture of Trust between CPCFA and Bankers Trust Company dated
           August 1, 1990, as supplemented on May 1, 1990 (Delano I; filed as
           Exhibit 10.30 to the Registrant's Registration Statement on Form S-1
           [Reg. No. 33-86682] and incorporated
           herein by reference).

10.32      Indenture of Trust between CPCFA and Bankers Trust Company dated
           October, 1991 (Delano II; filed as Exhibit 10.31 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.33      Loan Agreement between CPCFA and Delano Energy Company, Inc. dated
           October 1, 1991 (filed as Exhibit 10.32 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.34      Power Purchase Contract between Southern California Edison Co.
           and Signal Delano Energy Company, Inc. dated July 31, 1987
           (filed as Exhibit 10.33 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and incorporated herein by
           reference).

10.35      Amended Restated Reimbursement Agreement among Chemical Trust
           Company of California ("CTCC"), Delano Energy Company, Inc. and
           ABN AMRO Bank N.V. and other banks dated December 31, 1993
           (filed as Exhibit 10.34 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and incorporated
           herein by reference).

10.36      Amended and Restated Lease Agreement between CTCC and Delano Energy
           Company, Inc. dated December 31, 1993 (filed as Exhibit 10.35 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.37      Biomass Fuel Supply Contract between the Registrant and Delano Energy
           Company, Inc. dated December 31, 1993 (filed as Exhibit 10.36 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.38      Agreement between Consolidated Edison Company of New York, Inc. and
           Staten Island Cogeneration Corporation (filed as Exhibit 10.37 to the
           Registrant's Registration Statement on Form S-1 [Reg. No. 33-86682]
           and incorporated herein by reference).

10.39      Power Purchase Agreement between Woodland Biomass Power, Ltd. and
           Pacific Gas & Electric Company dated May 7, 1987 (filed as Exhibit
           10.38 to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-86682] and incorporated herein by reference).

10.40      Stock Purchase Agreement dated as of August 18, 1995, between the
           Registrant and KFx, Inc. (filed as Exhibit 10.40 to the Registrant's
           Transition Report on Form 10-K for the nine months ended September
           30, 1995 [File No. 1-13572] and incorporated herein by reference).
           Pursuant to Item 601(b)(2) of Regulation S-K, schedules to this
           Agreement  have been omitted.  The Company hereby undertakes to 
           furnish supplementally a copy of such schedules to the commission 
           upon request.

                                       29
<PAGE>


Exhibit
Number     Description of Exhibit

10.41      Stock Purchase Warrant issued by KFx, Inc. to the Company dated
           August 18, 1995 (filed as Exhibit 10.41 to the Registrant's
           Transition Report on Form 10-K for the nine months ended September
           30, 1995 [File No. 1-13572] and incorporated herein
           by reference).

10.42      Stock Purchase Warrant issued by KFx, Inc. to the Company dated
           August 18, 1995 (filed as Exhibit 10.42 to the Registrant's
           Transition Report on Form 10-K for the nine months ended September
           30, 1995 [File No. 1-13572] and incorporated herein
           by reference).

10.43      Limited Partnership Agreement of KFx Fuel Partners, L.P. dated as of
           August 18, 1995 (filed as Exhibit 10.43 to the Registrant's
           Transition Report on Form 10-K for the nine months ended September
           30, 1995 [File No. 1-13572] and incorporated herein by reference).
           (Certain portions of this Exhibit have been omitted subject to an
           application for confidential treatment filed with the Commission
           pursuant to Rule 24b-2 under the Securities Exchange Act of 1934.)

10.44      Turnkey Design and Construction Agreement dated as of August 18,
           1995, between KFx Fuel Partners, L.P. and Walsh Construction Company,
           a Division of Guy F. Atkinson Company (filed as Exhibit 10.44 to the
           Registrant's Transition Report on Form 10-K for the nine months ended
           September 30, 1995 [File No. 1-13572] and incorporated herein by
           reference). (Certain portions of this Exhibit have been omitted
           subject to an application for confidential treatment filed with the
           Commission pursuant to Rule 24b-2 under the Securities Exchange Act
           of 1934.)

10.45      Lease Agreement between Manufacturers Hanover Trust Company of
           California and Woodland Biomass Power, Ltd. dated December 29,
           1989 (filed as Exhibit 10.39 to the Registrant's Registration
           Statement on Form S-1 [Reg. No. 33-86682] and incorporated
           herein by reference).

10.46      First Amendment to Power Purchase Agreement dated November 6, 1997, 
           between Woodland Biomass Power, Ltd. and Pacific Gas and Electric
           Company  (filed as  Exhibit  10.3 to the  Registrant's  Quarterly
           Report on Form 10-Q for the quarter  ended  January 3, 1998 [File
           No.  1-13572] and  incorporated  herein by  reference).  (Certain
           portions  of  this  Exhibit  have  been  omitted  subject  to  an
           application for confidential  treatment filed with the Commission
           pursuant  to Rule  24b-2  under the  Securities  Exchange  Act of
           1934.)

10.47      Second Amendment to Power Purchase Agreement dated November 6, 1997,
           between Mendota Biomass Power, Ltd. and Pacific Gas and Electric
           Company (filed as Exhibit 10.4 to the Registrant's Quarterly Report
           on Form 10-Q for the quarter ended January 3, 1998 [File No. 1-13572]
           and incorporated herein by reference). (Certain portions of this
           Exhibit have been omitted subject to an application for confidential
           treatment filed with the Commission pursuant to Rule 24b-2 under the
           Securities Exchange Act of 1934.)

10.48      Incentive Stock Option Plan of the Registrant (filed as Exhibit 10.44
           to the Registrant's Registration Statement on Form S-1 [Reg. No
           33-86682] and incorporated herein by reference). (Maximum number of
           shares issuable in the aggregate under this plan and the Registrant's
           Nonqualified Stock Option Plan is 1,350,000 shares, after adjustment
           to reflect share increase approved in December 1993 and 3-for-2 stock
           split effected in October 1996.)

                                       30
<PAGE>

Exhibit
Number     Description of Exhibit

10.49      Nonqualified Stock Option Plan of the Registrant (filed as Exhibit
           10.45 to the Registrant's Registration Statement on Form S-1 [Reg.
           No. 33-86682] and incorporated herein by reference). (Maximum number
           of shares issuable in the aggregate under this plan and the
           Registrant's Incentive Stock Option Plan is 1,350,000 shares, after
           giving effect to share increase approved in December 1993 and 3-for-2
           stock split effected in October 1996.)

10.50      Equity Incentive Plan of the Registrant (filed as Exhibit 10.40
           to the Registrant's Registration Statement on Form S-1 (Reg.
           No. 33-86682) and incorporated herein by reference).

10.51      Deferred Compensation Plan for Directors of the Registrant (filed as
           Exhibit 10.41 to the Registrant's Registration Statement on Form S-1
           [Reg. No. 33-86682] and incorporated
           herein by reference).

10.52      Amended and Restated Directors Stock Option Plan of the
           Registrant (filed as Exhibit 10.42 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.53      Thermo Ecotek Corporation - Thermo Trilogy Corporation Nonqualified
           Stock Option Plan (filed as Exhibit 10.51 to the Registrant's Report
           on Form 10-K for the fiscal year ended September 28, 1996 [File No.
           1-13572] and incorporated herein
           by reference).

10.54      Thermo Trilogy Corporation Equity Incentive Plan (filed as Exhibit 
           10.52 to the Registrant's Report on Form 10-K for the fiscal year 
           ended September 28, 1996 [File No. 1-13572] and incorporated
           herein by reference).

           In addition to the stock-based compensation plans of the Registrant,
           the executive officers of the Registrant may be granted awards under
           stock-based compensation plans of Thermo Electron Corporation, for
           services rendered to the Registrant. The terms of such plans are
           substantially the same as those of the Registrant's Equity Incentive
           Plan.
 .
10.55      Form of Indemnification Agreement between the Registrant and its
           officers and directors (filed as Exhibit 10.43 to the Registrant's
           Registration Statement on Form S-1 [Reg. No. 33-86682] and
           incorporated herein by reference).

10.56      Restated Stock Holding Assistance Plan and Form of Promissory Note
           (filed as Exhibit 10.54 to the Registrant's Annual Report on Form
           10-K for the fiscal year ended September 27, 1997 [File No. 1-13572]
           and incorporated herein by reference).

13         Annual Report to Shareholders for the fiscal year ended October 3,
           1998 (only those portions incorporated herein by reference).

21         Subsidiaries of the Registrant.

23         Consent of Arthur Andersen LLP.

27         Financial Data Schedule.


                                                                      Exhibit 13
















                                        Thermo Ecotek Corporation

                                    Consolidated Financial Statements

                                             Fiscal Year 1998

<PAGE>


Thermo Ecotek Corporation                          1998 Financial Statements

                                     Consolidated Statement of Income
<TABLE>
<CAPTION>
<S>                                                                         <C>       <C>         <C>
                                                    
                                                                                      Year Ended
                                                                            -------------------------------
(In thousands except per share amounts)                                       Oct. 3, Sept. 27,   Sept. 28,
                                                                                 1998      1997        1996
- --------------------------------------------------------------------------- --------- ---------   ---------

Revenues (Notes 11 and 13)                                                  $ 208,971  $180,191   $ 150,076
                                                                            ---------  --------   ---------

Costs and Operating Expenses:
  Cost of revenues (includes $4,668, $4,545, and $4,952 to related            135,506   114,610     101,883
    parties; Notes 8 and 9)
  Selling, general, and administrative expenses (includes $1,767,              21,950    16,845      11,525
    $1,802, and $1,759 to related parties; Notes 8 and 9)
  Research and development expenses                                             2,398     1,638         693
                                                                            ---------  --------   ---------

                                                                              159,854   133,093     114,101
                                                                            ---------  --------   ---------

Operating Income                                                               49,117    47,098      35,975

Interest Income                                                                 4,096     5,089       5,104
Interest Expense (includes $1,644, $2,740, and $2,740 to parent               (11,040)  (13,926)    (14,727)
 company)
Gain on Issuance of Stock by Subsidiary (Note 5)                                6,269         -           -
Equity in Earnings (Loss) of Joint Venture                                        150        33         (26)
                                                                            ---------  --------   ---------

Income Before Provision for Income Taxes and Minority Interest                 48,592    38,294      26,326
Provision for Income Taxes (Note 7)                                            15,702    14,415       7,271
Minority Interest Expense                                                       1,681     1,334       1,275
                                                                            ---------  --------   ---------

Net Income                                                                  $  31,209  $ 22,545   $  17,780
                                                                            =========  ========   =========

Earnings per Share (Note 15)
  Basic                                                                     $    1.07  $    .92   $     .76
                                                                            =========  ========   =========

  Diluted                                                                   $     .86  $    .64   $     .54
                                                                            =========  ========   =========

Weighted Average Shares (Note 15)
  Basic                                                                        29,299    24,613      23,528
                                                                            =========  ========   =========

  Diluted                                                                      39,152    38,740      36,292
                                                                            =========  ========   =========
</TABLE>












The accompanying notes are an integral part of these consolidated financial
statements.

                                       2
<PAGE>

Thermo Ecotek Corporation                          1998 Financial Statements

                                        Consolidated Balance Sheet
<TABLE>
<CAPTION>
<S>                                                                                    <C>        <C>
(In thousands)                                                                           Oct. 3,  Sept. 27,
                                                                                            1998       1997
- -------------------------------------------------------------------------------------- ---------  ---------

Assets
Current Assets:
  Cash and cash equivalents (includes $21,207 and $69,309 under repurchase             $  41,371  $  83,540
    agreement with parent company)
  Restricted funds                                                                        24,536     20,773
  Accounts receivable and unbilled revenues                                               45,792     33,039
  Inventories                                                                             23,640     13,916
  Prepaid income taxes (Note 7)                                                           11,724      4,298
  Other current assets                                                                     2,335      1,728
                                                                                       ---------  ---------

                                                                                         149,398    157,294
                                                                                       ---------  ---------

Property, Plant, and Equipment, Net                                                      301,930    263,067
                                                                                       ---------  ---------

Due from Parent Company (Note 7)                                                               -     10,164
                                                                                       ---------  ---------

Long-term Available-for-sale Investment, at Quoted Market Value (amortized                 8,502     12,497
  cost of $8,504; Note 2)
                                                                                       ---------  ---------

Restricted Funds                                                                          26,177     20,905
                                                                                       ---------  ---------

Other Assets                                                                              19,104     21,378
                                                                                       ---------  ---------

                                                                                       $ 505,111  $ 485,305
                                                                                       =========  =========
</TABLE>


                                       3
<PAGE>

Thermo Ecotek Corporation                         1998 Financial Statements

                                  Consolidated Balance Sheet (continued)
<TABLE>
<CAPTION>
<S>                                                                                    <C>        <C>
(In thousands except share amounts)                                                      Oct. 3,  Sept. 27,
                                                                                            1998       1997
- -------------------------------------------------------------------------------------- ---------- ----------

Liabilities and Shareholders' Investment
Current Liabilities:
  Current portion of long-term obligations (Note 12)                                   $  28,032  $  35,012
  Accounts payable                                                                        10,775      4,031
  Lease obligations payable                                                                1,648      1,736
  Accrued interest                                                                         2,521      3,524
  Accrued income taxes (Note 7)                                                            5,378      2,057
  Other accrued expenses                                                                  15,009     18,965
  Due to parent company                                                                    2,446      1,255
                                                                                       ---------  ---------

                                                                                          65,809     66,580
                                                                                       ---------  ---------

Long-term Obligations (Note 12):
  Nonrecourse tax-exempt obligations                                                      33,700     51,800
  Subordinated convertible debentures (includes $68,500 due to parent                     47,400    130,648
    company in 1997)
  Capital lease obligations                                                               12,346     22,242
                                                                                       ---------  ---------

                                                                                          93,446    204,690
                                                                                       ---------  ---------

Deferred Income Taxes (Note 7)                                                            56,571     49,934
                                                                                       ---------  ---------

Other Deferred Items                                                                      25,216     13,521
                                                                                       ---------  ---------

Minority Interest                                                                         14,437      3,304
                                                                                       ---------  ---------

Commitments and Contingencies (Notes 3, 8, 9, and 10)

Shareholders' Investment (Notes 4, 6, and 12):
  Common stock, $.10 par value, 50,000,000 shares authorized; 37,822,789                   3,782      2,598
    and 25,978,198 shares issued
  Capital in excess of par value                                                         175,673     95,573
  Retained earnings                                                                       98,802     67,593
  Treasury stock at cost, 1,944,179 and 1,477,250 shares                                 (28,735)   (20,872)
  Cumulative translation adjustment                                                          112        (52)
  Net unrealized gain (loss) on available-for-sale investment (Note 2)                        (2)     2,436
                                                                                       ---------  ---------

                                                                                         249,632    147,276
                                                                                       ---------  ---------

                                                                                       $ 505,111  $ 485,305
                                                                                       =========  =========


</TABLE>




The accompanying notes are an integral part of these consolidated financial
statements.

                                       4
<PAGE>

Thermo Ecotek Corporation                          1998 Financial Statements

                                   Consolidated Statement of Cash Flows
<TABLE>
<CAPTION>
<S>                                                                         <C>       <C>         <C>
                                                                                      Year Ended
                                                                            -------------------------------
(In thousands)                                                                Oct. 3, Sept. 27,   Sept. 28,
                                                                                 1998      1997        1996
- --------------------------------------------------------------------------- ---------- ---------- ---------

Operating Activities
  Net income                                                                $  31,209  $ 22,545   $  17,780
  Adjustments to reconcile net income to net cash provided by
  operating    activities:
      Depreciation and amortization                                            23,903    21,618      20,425
      Deferred income tax expense (Note 7)                                      6,919    10,715       3,086
      Minority interest expense                                                 1,681     1,334       1,275
      Gain on issuance of stock by subsidiary (Note 5)                         (6,269)        -           -
      Deferred revenue (Note 11)                                                    -    (8,200)          -
      Changes in current accounts, excluding the effect of acquisitions:
        Restricted funds                                                       (3,763)   (1,837)     (6,944)
        Accounts receivable and unbilled revenues                             (12,493)   (3,740)     (2,130)
        Inventories                                                              (799)   (1,371)      1,584
        Other current assets                                                   (7,854)    1,229         544
        Accounts payable                                                        6,355     2,457         148
        Lease obligations payable                                                (602)     (602)        389
        Due from parent company                                                12,631     3,170       5,319
        Other current liabilities                                                (843)      201       3,599
        Other                                                                       -         -          26
                                                                            ---------  --------   ---------

         Net cash provided by operating activities                             50,075    47,519      45,101
                                                                            ---------  --------   ---------

Investing Activities
  Acquisitions, net of cash acquired (Note 3)                                 (19,100)  (10,865)     (8,088)
  Purchases of property, plant, and equipment                                 (48,423)  (17,710)    (36,587)
  Funding of long-term restricted funds                                        (5,272)   (6,793)     (2,073)
  Increase in other deferred items                                             12,209     8,476           -
  Increase in other assets                                                     (2,610)   (2,452)     (3,004)
                                                                            ---------  --------   ---------

         Net cash used in investing activities                                (63,196)  (29,344)    (49,752)
                                                                            ---------  --------   ---------

Financing Activities
  Net proceeds from issuance of subordinated convertible                            -    48,470      35,942
    debentures
    (Note 12)
  Repayment of long-term obligations                                          (26,100)  (16,800)    (14,100)
  Payments under capital lease obligations                                     (8,912)   (8,006)     (7,191)
  Net proceeds from issuance of Company and subsidiary common                  15,777       698       6,247
    stock (Notes 4 and 5)
  Payment of withholding taxes related to stock option exercises                 (319)   (1,115)     (1,221)
  Purchases of Company common stock                                           (10,248)  (19,743)          -
  Distribution to minority partner                                             (1,147)   (1,346)       (947)
  Capital contribution by minority partner                                      1,961         -           -
                                                                            ---------  --------   ---------

         Net cash provided by (used in) financing activities                $ (28,988) $  2,158   $  18,730
                                                                            ---------  --------   ---------

                                       5
<PAGE>

Thermo Ecotek Corporation                          1998 Financial Statements

                             Consolidated Statement of Cash Flows (continued)
                                                                                      Year Ended
                                                                            -------------------------------
(In thousands)                                                                Oct. 3,  Sept. 27,  Sept. 28,
                                                                                 1998      1997        1996
- --------------------------------------------------------------------------- ---------- ---------- ---------

Exchange Rate Effect on Cash                                                $     (60) $    (31)  $       -
                                                                            ---------  --------   ---------

Increase (Decrease) in Cash and Cash Equivalents                              (42,169)   20,302      14,079
Cash and Cash Equivalents at Beginning of Year                                 83,540    63,238      49,159
                                                                            ---------  --------   ---------

Cash and Cash Equivalents at End of Year                                    $  41,371  $ 83,540   $  63,238
                                                                            =========  ========   =========

Cash Paid For
  Interest                                                                  $  12,727  $ 13,100   $  14,267
  Income taxes                                                              $      38  $      7   $     101

Noncash Activities
  Fair value of assets of acquired companies                                $  20,025  $ 15,183   $   8,983
  Cash paid for acquired companies                                            (19,100)  (11,223)     (8,088)
                                                                            ---------  --------   ---------

    Liabilities assumed of acquired companies                               $     925  $  3,960   $     895
                                                                            =========  ========   =========

  Conversions of subordinated convertible debentures (includes              $  83,248  $ 19,579   $   5,273
                                                                            =========  ========   =========
    $68,500 converted by parent company in fiscal 1998; Note 12)

</TABLE>

























The accompanying notes are an integral part of these consolidated financial
statements.

                                       6
<PAGE>


Thermo Ecotek Corporation                         1998 Financial Statements
<TABLE>
<CAPTION>
<S>                                                                         <C>        <C>        <C>   
                            Consolidated Statement of Shareholders' Investment
(In thousands)                                                                   1998      1997        1996
- --------------------------------------------------------------------------- ---------- ---------- ---------

Common Stock, $.10 Par Value
  Balance at beginning of year                                              $   2,598  $  1,617   $   1,551
  Conversions of subordinated convertible debentures (Note 12)                  1,183       145          26
  Issuance of Company common stock under employees' and directors'                  1        27          18
    stock plans
  Effect of three-for-two stock split                                               -       809           -
  Net proceeds from private placement of Company common stock (Note 4)              -         -          22
                                                                            ---------  --------   ---------

  Balance at end of year                                                        3,782     2,598       1,617
                                                                            ---------  --------   ---------

Capital in Excess of Par Value
  Balance at beginning of year                                                 95,573    74,740      64,188
  Conversions of subordinated convertible debentures (Note 12)                 81,701    18,991       5,107
  Issuance of Company common stock under employees' and directors'             (1,601)      204         503
    stock plans
  Tax benefit related to employees' and directors' stock plans                      -     2,447           -
  Effect of three-for-two stock split                                               -      (809)          -
  Net proceeds from private placement of Company common stock (Note 4)              -         -       4,942
                                                                            ---------  --------   ---------

  Balance at end of year                                                      175,673    95,573      74,740
                                                                            ---------  --------   ---------

Retained Earnings
  Balance at beginning of year                                                 67,593    45,048      27,268
  Net income                                                                   31,209    22,545      17,780
                                                                            ---------  --------   ---------

  Balance at end of year                                                       98,802    67,593      45,048
                                                                            ---------  --------   ---------

Treasury Stock
  Balance at beginning of year                                                (20,872)     (481)        (22)
  Activity under employees' and directors' stock plans                          2,385      (648)       (459)
  Purchases of Company common stock                                           (10,248)  (19,743)          -
                                                                            ---------  --------   ---------

  Balance at end of year                                                      (28,735)  (20,872)       (481)
                                                                            ---------  --------   ---------

Cumulative Translation Adjustment
  Balance at beginning of year                                                    (52)        -           -
  Translation adjustment                                                          164       (52)          -
                                                                            ---------  --------   ---------

  Balance at end of year                                                          112       (52)          -
                                                                            ---------  --------   ---------

Net Unrealized Gain (Loss) on Available-for-sale Investment
  Balance at beginning of year                                                  2,436     8,763           -
  Change in net unrealized gain (loss) on available-for-sale investment        (2,438)   (6,327)      8,763
    (Note 2)
                                                                            ---------  --------   ---------

  Balance at end of year                                                           (2)    2,436       8,763
                                                                            ---------  --------   ---------

Total Shareholders' Investment                                              $ 249,632  $147,276   $ 129,687
                                                                            =========  ========   =========
</TABLE>



The accompanying notes are an integral part of these consolidated financial
statements.

                                       7
<PAGE>


Thermo Ecotek Corporation                            1998 Financial Statements

                                Notes to Consolidated Financial Statements
1.    Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations
      Thermo Ecotek Corporation (the Company) is an environmental company
providing a range of environmentally responsible technologies and products,
including nonutility electric power generation using clean combustion processes,
engineered clean fuels, as well as environmentally friendly pest control
products through its biopesticides subsidiary, Thermo Trilogy Corporation (Note
3).
      The Company develops and operates alternative-energy electrical-generation
facilities through joint ventures or limited partnerships in which the Company
has a majority interest, or through wholly owned subsidiaries (the Operating
Companies). The Company's interests in the Operating Companies range from 60% to
100% and, in each case, are held by wholly owned subsidiaries of the Company. Of
the facilities operated by the Company, four are owned by the Company and the
remainder are owned by unaffiliated parties who lease them to the Operating
Companies under long-term leases (Note 8).

Relationship with Thermo Electron Corporation
      The Company was incorporated on November 30, 1989, as a wholly owned
subsidiary of Thermo Electron Corporation. At October 3, 1998, Thermo Electron
owned 33,696,106 shares of the Company's common stock, representing 94% of such
stock outstanding.

Principles of Consolidation
      The accompanying financial statements include the accounts of the Company,
its majority-owned and wholly owned Operating Companies, and its majority-owned
subsidiary. All significant intercompany accounts and transactions have been
eliminated in consolidation. The Company accounts for investments in businesses
in which it owns between 20% and 50% using the equity method.

Fiscal Year
      The Company has adopted a fiscal year ending the Saturday nearest
September 30. References to fiscal 1998, 1997, and 1996 are for the years ended
October 3, 1998, September 27, 1997, and September 28, 1996, respectively.
Fiscal 1998 included 53 weeks; fiscal 1997 and 1996 each included 52 weeks.

Revenue Recognition
      The Company earns revenues primarily from the operation of
alternative-energy facilities. Revenues from plant operations are recorded as
electricity is delivered. The Operating Companies have long-term power-supply
arrangements with local utilities, expiring between 2005 and 2020, to sell all
the output of the plants currently in operation at established or formula-based
defined rates (Note 10). Under certain of these arrangements, in the event of
service termination by the Operating Companies prior to the end of the
obligation period, the Operating Companies may be required to reimburse the
utilities to the extent that cumulative revenue calculated at established rates
exceeds the amounts calculated at the utilities' "avoided cost" rates.
Management does not expect to incur any obligation under these provisions in the
foreseeable future. The Company recognizes revenue from its biopesticide
products upon shipment.
      The Woodland plant has conditions in its nonrecourse lease agreement that
require the funding of a "power reserve" in years prior to 2000, based on
projections of operating cash flow shortfalls in 2000 and thereafter. The power
reserve represents funds available to make lease payments in the event that
revenues are not sufficient after the plant converts to avoided-cost rates in
March 2000. It has been asserted that the plant will convert to avoided cost
rates in mid-1999; however, the Company disputes this assertion. This funding
requirement significantly limits profit distributions that Woodland may make to
the Company. Accordingly, beginning during the first quarter of fiscal 1997, the
Company began recording as an expense the funding of reserves required under
Woodland's nonrecourse lease agreement to cover projected shortfalls in lease
payments beginning in 2000. Consequently, the results of the Woodland plant were
reduced to approximately breakeven in fiscal 1998. During fiscal 1997 and 1996,
the Woodland plant contributed $1.0 million and $5.1 million of operating
income, respectively.

                                       8
<PAGE>


1.    Nature of Operations and Summary of Significant Accounting Policies
       (continued)

Repairs and Maintenance
      The Company charges routine repairs and maintenance to expense in the
period the costs are incurred. The Company accrues for major maintenance and
overhauls in anticipation of scheduled outages. Other accrued expenses in the
accompanying balance sheet includes approximately $1.9 million and $3.9 million
at fiscal year-end 1998 and 1997, respectively, in anticipation of major
maintenance and overhauls.

Interest Rate Swap Agreements and Forward Contracts
      The Company has entered into interest rate swap agreements in connection
with debt on certain alternative-energy facilities (Notes 12 and 14). The
interest rate swap agreements convert floating debt obligations to fixed rate
obligations. Interest rate swap agreements are accounted for under the accrual
method. Amounts to be received from or paid to the counter-parties of the
agreements are accrued during the period to which the amounts relate and are
reflected as interest expense. The related amounts payable to the
counter-parties are included in other accrued expenses in the accompanying
balance sheet. The fair value of the swap agreements is not recognized in the
accompanying financial statements since the agreements are accounted for as
hedges.
      The Company enters into foreign currency agreements to manage specifically
identifiable risks. The Company's short-term foreign exchange contracts are part
of the Company's management of foreign currency exposures. Foreign currency
agreements are treated as a hedge on currency movements on certain customer
deposits received and held in foreign denominated currency. Gains and losses on
the forward contract offset gains and losses on the foreign- denominated
account.
      The Company does not enter into speculative interest rate swap or foreign
currency agreements.

Gain on Issuance of Stock by Subsidiary
      At the time a subsidiary sells its stock to unrelated parties at a price
in excess of its book value, the Company's net investment in that subsidiary
increases. If at that time the subsidiary is an operating entity and not engaged
principally in research and development, the Company records the increase as a
gain.
      If gains have been recognized on issuances of a subsidiary's stock and
shares of the subsidiary are subsequently repurchased by the subsidiary, the
Company, or Thermo Electron, gain recognition does not occur on issuances
subsequent to the date of a repurchase until such time as shares have been
issued in an amount equivalent to the number of repurchased shares.

Stock-based Compensation Plans
      The Company applies Accounting Principles Board Opinion (APB) No. 25,
"Accounting for Stock Issued to Employees" and related interpretations in
accounting for its stock-based compensation plans (Note 6). Accordingly, no
accounting recognition is given to stock options granted at fair market value
until they are exercised. Upon exercise, net proceeds, including tax benefits
realized, are credited to equity.

Income Taxes
      The Company and Thermo Electron have a tax allocation agreement under
which the Company is included in the consolidated federal and certain state
income tax returns filed by Thermo Electron. The agreement provides that Thermo
Electron charges or pays the Company amounts based on the Company's relative
contribution to Thermo Electron's tax liability. If Thermo Electron's equity
ownership of the Company were to drop below 80%, the Company would be required
to file its own tax returns.

                                       9
<PAGE>


1.    Nature of Operations and Summary of Significant Accounting Policies 
       (continued)

      In accordance with Statement of Financial Accounting Standards (SFAS) No.
109, "Accounting for Income Taxes," the Company recognizes deferred income taxes
based on the expected future tax consequences of differences between the
financial statement basis and the tax basis of assets and liabilities,
calculated using enacted tax rates in effect for the year in which the
differences are expected to be reflected in the tax return (Note 7).

Earnings per Share
      During the first quarter of fiscal 1998, the Company adopted SFAS No. 128,
"Earnings per Share" (Note 15). As a result, all previously reported earnings
per share have been restated; however, diluted earnings per share equals the
Company's previously reported fully diluted earnings per share for fiscal 1997.
Basic earnings per share have been computed by dividing net income by the
weighted average number of shares outstanding during the period. Diluted
earnings per share have been computed assuming the conversion of convertible
obligations and the elimination of the related interest expense, and the
exercise of stock options, as well as their related income tax effects.

Cash and Cash Equivalents and Restricted Funds
      At fiscal year-end 1998 and 1997, $21.2 million and $69.3 million,
respectively, of the Company's cash equivalents were invested in a repurchase
agreement with Thermo Electron. Under this agreement, the Company in effect
lends excess cash to Thermo Electron, which Thermo Electron collateralizes with
investments principally consisting of corporate notes, U.S. government-agency
securities, commercial paper, money market funds, and other marketable
securities, in the amount of at least 103% of such obligation. The Company's
funds subject to the repurchase agreement are readily convertible into cash by
the Company. The repurchase agreement earns a rate based on the 90-day
Commercial Paper Composite Rate plus 25 basis points, set at the beginning of
each quarter. Cash equivalents also include investments in money market
accounts. The use of cash and cash equivalents totaling $12.0 million and $10.8
million at fiscal year-end 1998 and 1997, respectively, was restricted by the
terms of certain Operating Companies' lease and financing agreements.
      Restricted funds in the accompanying balance sheet represents amounts held
in trust for lease and debt payments and working capital requirements, as
required by certain of the Operating Companies' lease and financing agreements,
and are invested in money market accounts. Restricted funds that are not
expected to be used within the next fiscal year are classified as long-term in
the accompanying balance sheet.
      All cash equivalents and restricted funds are carried at cost, which
approximates market value.

Inventories
      Inventories consist of raw materials, fuel, operating supplies, spare
parts, materials, and overhead and are stated at the lower of cost (on a
first-in, first-out or average basis) or market value. The components of
inventories are as follows:
<TABLE>
<CAPTION>
<S>                                                                                      <C>      <C>    

(In thousands)                                                                              1998      1997
- ---------------------------------------------------------------------------------------- -------  ---------

Raw Materials and Supplies                                                               $13,843  $ 11,886
Work in Process                                                                            2,802       144
Finished Goods                                                                             6,995     1,886
                                                                                         -------  --------

                                                                                         $23,640  $ 13,916
                                                                                         =======  ========
</TABLE>


                                       10
<PAGE>


1.    Nature of Operations and Summary of Significant Accounting Policies
       (continued)

Property, Plant, and Equipment
      The costs of additions and improvements are capitalized. The Company
provides for depreciation and amortization primarily using the straight-line
method over the estimated useful lives of the property as follows: electric
generating facilities - 25 years; property under capital lease - the life of the
asset; leasehold improvements - the shorter of the term of the lease or the life
of the asset; and machinery and equipment - 3 to 7 years. The Company's
subbituminous coal-beneficiation facility is depreciated based on a rate per ton
of product produced that is computed by estimating total production over the
life of the facility. Property, plant, and equipment consists of the following:
<TABLE>
<CAPTION>

<S>                                                                                    <C>        <C> 
(In thousands)                                                                              1998       1997
- -------------------------------------------------------------------------------------- ---------  ---------

Land                                                                                   $   6,747  $   3,479
Electric Generating and Coal-beneficiation Facilities (Notes 9 and 12)                   282,315    200,573
Property Under Capital Lease                                                              47,020     47,020
Machinery and Equipment                                                                   19,261      7,366
Leasehold Improvements                                                                    16,915     15,814
Construction in Process (Note 3)                                                          17,295     54,585
                                                                                       ---------  ---------

                                                                                         389,553    328,837
Less:  Accumulated Depreciation and Amortization                                          87,623     65,770
                                                                                       ---------  ---------

                                                                                       $ 301,930  $ 263,067
                                                                                       =========  =========
</TABLE>

      In March 1998, the Company purchased two power-generation facilities and
related sites in California for approximately $9.5 million and the assumption of
certain liabilities. As of October 3, 1998, these facilities were not in service
and, therefore, are not being depreciated by the Company.

Other Assets
      Other assets in the accompanying balance sheet includes certain costs
associated with the development of the Company's alternative-energy facilities,
prepaid rent relating to an Operating Company's lease agreement, goodwill that
arose in connection with the acquisition of an Operating Company, deferred debt
expense relating to the Company's issuances of subordinated convertible
debentures, and patents, licenses, and other intangible assets arising from
acquisitions by Thermo Trilogy (Note 3). These assets are being amortized using
the straight-line method over their estimated useful lives, which range from 5
to 30 years. These assets were $17.5 million and $19.9 million, net of
accumulated amortization of $8.9 million and $8.2 million, at fiscal year-end
1998 and 1997, respectively.
      In addition, other assets includes an investment in a joint venture of
$1.6 million and $1.5 million at fiscal year-end 1998 and 1997, respectively.

Other Deferred Items
      Other deferred items in the accompanying balance sheet includes
obligations under an Operating Company lease to cover projected short-falls in
lease payments beginning in 2000, as described above under the caption "Revenue
Recognition." In addition, other deferred items includes rent that has been
recognized ratably for financial reporting purposes in connection with an
Operating Company's lease agreement (Note 8).

                                       11
<PAGE>


1.    Nature of Operations and Summary of Significant Accounting Policies 
       (continued)

Foreign Currency
      All assets and liabilities of the Company's foreign subsidiaries are
translated at year-end exchange rates, and revenues and expenses are translated
at average exchange rates for the year in accordance with SFAS No. 52, "Foreign
Currency Translation." Resulting translation adjustments are reflected as a
separate component of shareholders' investment titled "Cumulative translation
adjustment." Foreign currency transaction gains and losses are included in the
accompanying statement of income and are not material for the three years
presented.

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,
disclosure of contingent 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.

Presentation
      Certain amounts in fiscal 1997 and 1996 have been reclassified to conform
to the presentation in the fiscal 1998 financial statements.

2.    Available-for-sale Investment

      In accordance with SFAS No. 115 "Accounting for Certain Investments in
Debt and Equity Securities," the Company's marketable equity securities are
considered available-for-sale investments in the accompanying balance sheet and
are carried at market value, with the difference between cost and market value,
net of related tax effects, recorded as a component of shareholders' investment
titled "Net unrealized gain (loss) on available-for-sale investment." At fiscal
year-end 1998 and 1997, the Company held one long-term available-for-sale
investment, an investment in the common stock of KFx, Inc., described below.
      In fiscal 1995, the Company purchased 1,500,000 shares of KFx common stock
for $3.0 million, representing an approximate 7% equity interest in KFx. In
fiscal 1996, the Company purchased an additional 1,500,000 shares of KFx common
stock for $3.0 million, representing an additional 7% equity interest in KFx. In
fiscal 1997, the Company purchased an additional 1,250,000 shares of KFx common
stock for $2.5 million pursuant to the purchase agreement, bringing its total
equity interest in KFx to approximately 18%. The fair market value of this
investment at October 3, 1998, was $8.5 million. Simultaneously with the
execution of the purchase agreement, KFx granted to the Company a warrant to
purchase an additional 7,750,000 shares at $3.65 per share, as well as a warrant
to purchase further shares of the common stock of KFx at then market value,
defined so that the number, when added to all other shares of such common stock
owned by the Company, would result in the Company owning 51% of the common stock
of KFx on a diluted basis. These warrants are exercisable from January 1, 2000,
through July 1, 2001.

3.    Acquisitions and Projects Under Development

Acquisitions
      In November 1997, Thermo Trilogy acquired the sprayable bacillus
thuringiensis (Bt) - biopesticide business of Novartis AG and its affiliates
(the Bt business of Novartis) for $19.1 million in cash and the assumption of
certain liabilities. In January 1997, Thermo Trilogy acquired substantially all
of the assets of biosys, inc., a biopesticide company, for $11.2 million in cash
and the assumption of certain liabilities.
In May 1996, the Company, through Thermo Trilogy, acquired the assets of the 
biopesticides division of W.R. Grace & Co. (the biopesticides business of 
Grace), which develops, manufactures, and markets environmentally

                                       12
<PAGE>


3.    Acquisitions and Projects Under Development (continued)

friendly products used for pest control, for $8.1 million in cash and the
assumption of certain liabilities. In addition, the Company will pay a royalty
fee of seven percent on annual sales of the acquired business in excess of $14
million through the year 2000. As of October 3, 1998, no royalties were payable
under this provision.
      These acquisitions have been accounted for using the purchase method of
accounting and their results have been included in the accompanying financial
statements from their respective dates of acquisition. The aggregate cost of
these acquisitions approximated the fair value of the net assets acquired.
Allocation of the purchase price was based on an estimate of the fair value of
the net assets acquired.
      Based upon unaudited data, the following table presents selected financial
information for the Company, the Bt business of Novartis, and the biosys
business on a pro forma basis, assuming the Company and the Bt business of
Novartis had been combined since the beginning of fiscal 1997 and the Company
and the biosys business had been combined since the beginning of fiscal 1996.
The effect of the acquisition of the biopesticides business of Grace is not
included in the pro forma data as it was not material to the Company's results
of operations.
<TABLE>
<CAPTION>

<S>                                                                         <C>        <C>        <C> 
(In thousands except per share amounts)                                          1998      1997        1996
- --------------------------------------------------------------------------- ---------- ---------- ---------

Revenues                                                                    $ 212,204  $205,199   $ 172,569
Net Income                                                                     31,380    17,272       3,931
Earnings per Share:
  Basic                                                                          1.07       .70         .17
  Diluted                                                                         .86       .51         .15
</TABLE>

      The pro forma results are not necessarily indicative of future operations
or the actual results that would have occurred had the acquisition of the Bt
business of Novartis been made at the beginning of fiscal 1997 or the
acquisition of the biosys business been made at the beginning of fiscal 1996.

Projects Under Development
      During April 1998, the Company commenced commercial operations at its
95%-owned coal-beneficiation facility, near Gillette, Wyoming, following
construction of the facility. In January 1998, the Company indirectly acquired,
through a joint venture, a majority interest in certain power operations in the
Czech Republic for $7.3 million in cash. The Company has begun construction on a
50-megawatt, $32 million expansion at the Czech Republic facility which it
expects to complete in fiscal 1999. During fiscal 1998, the Company expended
$16.6 million on the Czech Republic plant expansion.

4.    Shareholders' Investment

      In June 1996, the Company sold 330,000 shares of its common stock in a
private placement at $16.08 per share, for net proceeds of $5.0 million.
      The net assets of certain Operating Companies are generally restricted as
to the amounts that can be transferred to the parent company in the form of
dividends, loans or advances, pursuant to certain lease or debt agreements. As
of October 3, 1998, net assets of certain subsidiaries of approximately $146.8
million were not restricted from distribution.
      At October 3, 1998, the Company had reserved 4,442,826 unissued shares of
its common stock for possible issuance under stock-based compensation plans and
for issuance upon possible conversion of the Company's convertible obligations.

                                       13
<PAGE>


5.    Transactions in Stock of Subsidiary

      In fiscal 1998, Thermo Trilogy sold 1,942,821 shares of its common stock
in private placements at $8.25 per share for net proceeds of $14.9 million,
resulting in a gain of $6.3 million. Following the private placements, the
Company owned 80% of Thermo Trilogy's outstanding common stock.

6.    Employee Benefit Plans

Stock-based Compensation Plans

Stock Option Plans
      The Company has stock-based compensation plans for its key employees,
directors, and others. Two of these plans permit the grant of nonqualified and
incentive stock options. A third plan permits the grant of a variety of stock
and stock-based awards as determined by the human resources committee of the
Company's Board of Directors (the Board Committee), including restricted stock,
stock options, stock bonus shares, or performance-based shares. To date, only
nonqualified stock options have been awarded under these plans. The option
recipients and the terms of options granted under these plans are determined by
the Board Committee. Generally, options granted to date are exercisable
immediately, but are subject to certain transfer restrictions and the right of
the Company to repurchase shares issued upon exercise of the options at the
exercise price, upon certain events. The restrictions and repurchase rights
generally lapse ratably over periods ranging from one to ten years after the
first anniversary of the grant date, depending on the term of the option, which
may range from three to twelve years. Nonqualified stock options may be granted
at any price determined by the Board Committee, although incentive stock options
must be granted at not less than the fair market value of the Company's stock on
the date of grant. To date, all options have been granted at fair market value.
The Company also has a directors' stock option plan that provides for the grant
of stock options to outside directors pursuant to a formula approved by the
Company's shareholders. Options awarded under this plan are exercisable six
months after the date of grant and expire three to seven years after the date of
grant. In addition to the Company's stock-based compensation plans, certain
officers and key employees may also participate in the stock-based compensation
plans of Thermo Electron.
      A summary of the Company's stock option information is as follows:
<TABLE>
<CAPTION>

<S>                                             <C>                 <C>                  <C> 
                                                        1998                1997                 1996
                                                -------------------  ------------------  ------------------
                                                           Weighted            Weighted            Weighted
                                                            Average             Average             Average
                                                           Exercise            Exercise            Exercise
                                                              Price               Price               Price
                                                  Number              Number               Number
                                                      of                  of                   of
(Shares in thousands)                             Shares              Shares               Shares
- ----------------------------------------------- --------- ---------- -------- ---------- --------- ---------

Options Outstanding, Beginning of Year             1,281     $ 8.64    1,439     $ 6.55     1,491     $4.96
  Granted                                             83      17.72      264      14.13       309     11.48
  Exercised                                         (205)      6.37     (369)      4.46      (349)     4.16
  Forfeited                                          (35)      9.33      (53)      8.21       (12)     6.98
                                                   -----               -----                -----

Options Outstanding, End of Year                   1,124     $ 9.70    1,281     $ 8.64     1,439     $6.55
                                                   =====     ======    =====     ======     =====     =====

Options Exercisable                                1,124     $ 9.70    1,281     $ 8.64     1,439     $6.55
                                                   =====     ======    =====     ======     =====     =====

Options Available for Grant                          305                 353                  365
                                                   =====               =====                =====
</TABLE>


                                                 14
<PAGE>


6.    Employee Benefit Plans (continued)

      A summary of the status of the Company's stock options at October 3, 1998,
is as follows:
<TABLE>
<CAPTION>

                                                                   Options Outstanding and Exercisable
                                                              ----------------------------------------------
<S>                                                           <C>            <C>                 <C>
Range of Exercise Prices                                             Number         Weighted       Weighted
                                                                         of          Average        Average
                                                                     Shares        Remaining       Exercise
                                                              (In thousands) Contractual Life         Price
- ------------------------------------------------------------- -------------- ---------------- --------------

$  5.50 - $  8.96                                                       627        6.7 years         $ 6.79
   8.97 -   12.41                                                       156        6.6 years          10.18
  12.42 -   15.87                                                       267        6.8 years          13.91
  15.88 -   19.33                                                        74        5.4 years          18.12
                                                                      ------

$  5.50 - $19.33                                                      1,124        6.6 years         $ 9.70
                                                                      =====
</TABLE>

Employee Stock Purchase Program
      Substantially all of the Company's employees are eligible to participate
in an employee stock purchase program sponsored by the Company and Thermo
Electron, under which employees can purchase shares of the Company's and Thermo
Electron's common stock. Prior to November 1, 1996, the program was sponsored by
Thermo Electron. Under this program, the applicable shares of common stock can
be purchased at the end of a 12-month plan year at 95% of the fair market value
at the beginning of the period, and shares purchased are subject to a six-month
resale restriction. Effective November 1, 1998, the applicable shares of common
stock may be purchased at 85% of the lower of the fair market value at the
beginning or end of the plan year, and shares purchased are subject to a
one-year resale restriction. Shares are purchased through payroll deductions of
up to 10% of each participating employee's gross wages.

Pro Forma Stock-based Compensation Expense
      In October 1995, the Financial Accounting Standards Board issued SFAS No.
123, "Accounting for Stock-based Compensation," which sets forth a fair-value
based method of recognizing stock-based compensation expense. As permitted by
SFAS No. 123, the Company has elected to continue to apply APB No. 25 to account
for its stock-based compensation plans. Had compensation cost for awards granted
after fiscal 1995 under the Company's stock-based compensation plans been
determined based on the fair value at the grant dates consistent with the method
set forth under SFAS No. 123, the effect on the Company's net income and
earnings per share would have been as follows:
<TABLE>
<CAPTION>

<S>                                                                            <C>      <C>       <C> 
(In thousands except per share amounts)                                           1998      1997     1996
- ------------------------------------------------------------------------------ -------- --------- --------

Net Income:
  As reported                                                                  $31,209  $ 22,545  $17,780
  Pro forma                                                                     30,614    22,159   17,565

Basic Earnings per Share:
  As reported                                                                     1.07       .92      .76
  Pro forma                                                                       1.04       .90      .75

Diluted Earnings per Share:
  As reported                                                                      .86       .64      .54
  Pro forma                                                                        .84       .63      .53

</TABLE>

                                       15
<PAGE>


6.    Employee Benefit Plans (continued)

      Because the method prescribed by SFAS No. 123 has not been applied to
options granted prior to October 1, 1995, the resulting pro forma compensation
expense may not be representative of the amount to be expected in future years.
Compensation expense for options granted is reflected over the vesting period;
therefore, future pro forma compensation expense may be greater as additional
options are granted.
      The weighted average fair value per share of options granted was $5.79,
$5.72, and $4.49 in fiscal 1998, 1997, and 1996, respectively.
      The fair value of each option grant was estimated on the grant date using
the Black-Scholes option-pricing model with the following weighted-average
assumptions:
<TABLE>
<CAPTION>

<S>                                                                         <C>       <C>        <C> 
                                                                                1998       1997       1996
- -------------------------------------------------------------------------- ---------- ---------- ----------

Volatility                                                                       28%        26%        26%
Risk-free Interest Rate                                                         5.5%       6.1%       6.0%
Expected Life of Options                                                    4.2 years 6.4 years  6.1 years
</TABLE>

      The Black-Scholes option-pricing model was developed for use in estimating
the fair value of traded options which have no vesting restrictions and are
fully transferable. In addition, option-pricing models require the input of
highly subjective assumptions including expected stock price volatility. Because
the Company's employee stock options have characteristics significantly
different from those of traded options, and because changes in the subjective
input assumptions can materially affect the fair value estimate, in management's
opinion, the existing models do not necessarily provide a reliable single
measure of the fair value of its employee stock options.

401(k) Savings Plans
      Substantially all of the Company's corporate, full-time employees are
eligible to participate in Thermo Electron's 401(k) savings plan. Contributions
to the Thermo Electron 401(k) savings plan are made by both the employee and the
Company. Company contributions are based upon the level of employee
contributions. Employees of the Operating Companies who meet eligibility
requirements may participate in a separate defined contribution plan.
Contributions to the plan are made by both the employee and the Operating
Companies. The Operating Companies' contributions are based on the level of
employee contributions. The Company contributed and charged to expense for these
plans $536,000, $401,000, and $279,000 in fiscal 1998, 1997, and 1996,
respectively.

7.    Income Taxes

      The components of income before provision for income taxes and minority
interest are as follows:
<TABLE>
<CAPTION>

<S>                                                                          <C>        <C>        <C> 
(In thousands)                                                                  1998       1997       1996
- -------------------------------------------------------------------------- ---------- ---------- ----------

Domestic                                                                     $46,992    $37,712    $26,326
Foreign                                                                        1,600        582          -
                                                                             -------    -------    -------

                                                                             $48,592    $38,294    $26,326
                                                                             =======    =======    =======

</TABLE>

                                       16
<PAGE>


7.    Income Taxes (continued)

      The components of the provision for income taxes are as follows:
<TABLE>
<CAPTION>

<S>                                                                            <C>      <C>       <C> 
(In thousands)                                                                    1998      1997     1996
- ------------------------------------------------------------------------------ -------- --------- --------

Currently Payable:
  Federal                                                                      $ 7,202  $  3,214  $ 2,899
  State                                                                          1,438       486    1,286
  Foreign                                                                          143         -        -
                                                                               -------  --------  -------

                                                                                 8,783     3,700    4,185
                                                                               -------  --------  -------

Deferred:
  Federal                                                                        6,545     9,250    2,485
  State                                                                            374     1,465      601
                                                                               -------  --------  -------

                                                                                 6,919    10,715    3,086
                                                                               -------  --------  -------

                                                                               $15,702  $ 14,415  $ 7,271
                                                                               =======  ========  =======
</TABLE>

      The Company receives a tax deduction upon exercise of nonqualified stock
options by employees for the difference between the exercise price and the
market price of the Company's common stock on the date of exercise. The
provision for income taxes that is currently payable does not reflect $1,012,000
and $1,435,000 of such benefits that have been allocated to capital in excess of
par value in fiscal 1997 and 1996, respectively.
      The provision for income taxes in the accompanying statement of income
differs from the provision calculated by applying the statutory federal income
tax rate of 35% in fiscal 1998 and 1997 and 34% in fiscal 1996 to income before
provision for income taxes and minority interest due to the following:
<TABLE>
<CAPTION>

<S>                                                                            <C>      <C>       <C> 

(In thousands)                                                                    1998      1997     1996
- ------------------------------------------------------------------------------ -------- --------- --------

Provision for Income Taxes at Statutory Rate                                   $17,007  $ 13,403  $ 8,951
Increases (Decreases) Resulting From:
  State income taxes, net of federal tax                                         1,178     1,268    1,245
  Minority interest expense                                                       (491)     (466)    (434)
  Tax losses and credits benefited                                                   -         -   (2,528)
  Nondeductible expenses                                                            44       210       37
  Nontaxable gain on issuance of stock by subsidiary                            (2,194)        -        -
  Other                                                                            158         -        -
                                                                               -------  --------  -------

                                                                               $15,702  $ 14,415  $ 7,271
                                                                               =======  ========  =======
</TABLE>

      Tax losses and credits benefited during fiscal 1996 relate to the
resolution of certain tax contingencies.


                                       17
<PAGE>

7.    Income Taxes (continued)

      Prepaid and deferred income taxes in the accompanying balance sheet
consist of the following:
<TABLE>
<CAPTION>

<S>                                                                                      <C>      <C> 
(In thousands)                                                                              1998      1997
- ---------------------------------------------------------------------------------------- -------- ---------

Deferred (Prepaid) Income Taxes:
  Depreciation                                                                           $55,062  $ 48,377
  State tax net operating loss carryforwards                                              (2,811)   (2,570)
  Capitalized costs and other                                                             (2,097)     (324)
  Other reserves and accruals                                                             (9,959)   (3,974)
  Available-for-sale investments                                                              (2)    1,557
  Intangible assets                                                                        1,502         -
  Stock options not benefited                                                                341         -
                                                                                         -------  --------

                                                                                          42,036    43,066
  Valuation allowance                                                                      2,811     2,570
                                                                                         -------  --------

                                                                                         $44,847  $ 45,636
                                                                                         =======  ======== 
</TABLE>

      The valuation allowance relates principally to uncertainty surrounding the
realization of certain state tax loss carryforwards. State tax loss
carryforwards of approximately $29 million began expiring in 1998. Long-term due
from parent company in the accompanying fiscal 1997 balance sheet represents
amounts due from Thermo Electron for tax benefits arising from the Company's
operations. Due to parent company in the accompanying fiscal 1998 balance sheet
includes $2.5 million for the Company's liability for federal and state income
taxes.
      The Company has not recognized a deferred tax liability for the difference
between the book basis and tax basis of its investment in the common stock of
its subsidiary (such difference relates primarily to unremitted earnings of
foreign subsidiaries and gain on issuance of stock by subsidiary) because the
Company does not expect this basis difference to become subject to tax at the
parent level.
      A provision has not been made for U.S. or additional foreign taxes on $0.4
million of undistributed earnings of foreign subsidiaries that could be subject
to taxation if remitted to the U.S. because the Company currently plans to keep
those amounts reinvested overseas.

8.    Commitments

Leases
      Certain Operating Companies have operating lease agreements for their
facilities expiring in various years through 2010. The lease agreements provide
for renewal of each of the leases for additional periods ranging from one to
five years at the Operating Companies' option. In general, renewal options are
at the lower of a predetermined percentage of the average annual lease rental
during the lease terms or the fair market rental as determined by an independent
appraisal. In general, at the end of the lease terms or renewal terms, the
Operating Companies have a right of first refusal or an option to purchase the
facilities, at their fair market value, as determined by an independent
appraisal.
      Lease payments under the operating leases are made to the owner of the
facility only to the extent that power revenues exceed essential operating
expenses, as defined, up to certain specified maximum levels (Note 9). Subject
to the foregoing, as of October 3, 1998, the contractual amounts payable
pursuant to the lease agreements total approximately $132.6 million over the
remaining initial lease terms, averaging approximately $16.0 million per year.
The Company recognizes rent expense ratably over the respective lease terms. The
accompanying statement of income includes expenses from operating leases for the
Operating Companies' facilities of $15.2 million, $15.5 million, and $15.2
million in fiscal 1998, 1997, and 1996, respectively.


                                       18
<PAGE>

8.    Commitments (continued)

      In addition, the Company and a subsidiary lease office and production
facilities under operating lease arrangements expiring from fiscal 2002 through
fiscal 2005. The accompanying statement of income includes expenses from
operating leases excluding the related-party lease discussed below of $804,000,
$688,000, and $77,000 in fiscal 1998, 1997, and 1996, respectively. Future
minimum lease payments due under noncancellable operating leases as of October
3, 1998, net of annual sublease income of $178,000, are $604,000 in fiscal 1999;
$610,000 in fiscal 2000; $617,000 in fiscal 2001; $578,000 in fiscal 2002; and
$953,000 in fiscal 2003 and thereafter. Total future minimum lease payments are
$3,362,000.
      During part of fiscal 1997 and 1996, the Company leased part of its office
facilities from Thermo Electron. The agreement called for the Company to pay
rent based on Thermo Electron's occupancy costs per square foot. The
accompanying statement of income included expenses of $27,000 and $177,000 in
fiscal 1997 and 1996, respectively, under the agreement with Thermo Electron.

Fuel Supply
      The Operating Companies have entered into fuel supply agreements with
various suppliers guaranteeing the purchase of certain minimum quantities of
acceptable fuel at negotiated prices and terms. The Operating Companies
purchased $17.6 million, $20.4 million, and $20.0 million of fuel under such
contracts in fiscal 1998, 1997, and 1996, respectively. The agreements call for
price adjustments based on certain published indices or stated rates over their
terms expiring between calendar 1998 and 2005. See Note 9 for fuel supply
agreements with related parties.

9.    Related-party Transactions

Corporate Service Agreement
      The Company and Thermo Electron have a corporate services agreement under
which Thermo Electron's corporate staff provides certain administrative
services, including certain legal advice and services, risk management, certain
employee benefit administration, tax advice and preparation of tax returns,
centralized cash management, and certain financial and other services, for which
the Company currently pays Thermo Electron annually an amount equal to 0.8% of
the Company's revenues. In calendar years 1997 and 1996, the Company paid an
amount equal to 1.0% of the Company's revenues. Prior to January 1, 1996, the
Company paid an annual fee equal to 1.2% of the Company's revenues. For these
services, the Company was charged $1.8 million, $1.8 million, and $1.6 million
in fiscal 1998, 1997, and 1996, respectively. The annual fee is reviewed and
adjusted annually by mutual agreement of the parties. Management believes that
the service fee charged by Thermo Electron is reasonable and that such fees are
representative of the expenses the Company would have incurred on a stand-alone
basis. The corporate services agreement is renewed annually but can be
terminated upon 30 days' prior notice by the Company or upon the Company's
withdrawal from the Thermo Electron Corporate Charter (the Thermo Electron
Corporate Charter defines the relationships among Thermo Electron and its
majority-owned subsidiaries). For additional items such as employee benefit
plans, insurance coverage, and other identifiable costs, Thermo Electron charges
the Company based upon costs attributable to the Company.

Fuel Supply
      A portion of the fuel used by the Operating Companies' facilities is
obtained under agreements with related parties of the Operating Companies or
their joint venture partners (Note 8). During fiscal 1998, 1997, and 1996, the
Company paid $4.2 million, $4.2 million, and $4.6 million, respectively, under
these agreements.

Management Fees
      One of the Operating Companies has entered into management agreements with
a related party of its joint venture partner for the day-to-day operation of its
facility and the procurement and management of fuel. During fiscal 1998, 1997,
and 1996, the Company paid $386,000, $368,000, and $350,000, respectively, under
these agreements.

                                       19
<PAGE>


9.    Related-party Transactions (continued)

Thermo Electron Guarantees
      Thermo Electron has issued an operating standards support agreement for
each of the facilities leased or financed by the Operating Companies. These
agreements provide that Thermo Electron will loan the Operating Companies, on a
subordinated basis, enough funds to meet their lease or debt payments in the
event the power plants are unable to generate power at a designated level and
such inability is related to the design, construction, operation, or maintenance
of the plants and not caused by certain uncontrollable circumstances.
      Thermo Electron has also guaranteed the lease payments of one of the
Operating Companies under certain events. Under the terms of this guarantee,
Thermo Electron will loan funds to the Operating Company to cover any shortfall
in its lease payment in the event and to the extent the terms of the Operating
Company's power purchase agreements are changed by Public Service Company of New
Hampshire (PSNH; Note 10). No such payments have been required under this
guarantee.
      The Company and Thermo Electron have entered into a Master Guarantee
Reimbursement Agreement through which the Company will reimburse Thermo Electron
in the event that Thermo Electron is required to make any payments pursuant to
guarantees, including those guarantees described above.

Operating Lease
      See Note 8 for a description of the Company's operating lease with Thermo
Electron.

Long-term Obligations
      See Note 12 for a description of long-term obligations of the Company held
by Thermo Electron.

Repurchase Agreement
      The Company invests excess cash in a repurchase agreement with Thermo
Electron as discussed in Note 1.

10.   Contingencies

      Two of the Operating Companies have rate orders from the New Hampshire
Public Utilities Commission (NHPUC) to sell all of their power to PSNH. In 1990,
a plan of reorganization (the Plan) for PSNH was approved by the U.S. Bankruptcy
Court for the District of New Hampshire. Pursuant to the Plan, Northeast
Utilities (NU) acquired the assets of PSNH. An agreement between NU and the
State of New Hampshire contains language to the effect that PSNH will seek to
renegotiate some of the terms of certain rate orders with small power producers,
including the Whitefield and Hemphill Operating Companies, and that the state
will support PSNH in such efforts. PSNH reached an agreement in principle with
these two Operating Companies to settle the renegotiation of their rate orders.
The settlement agreement is subject to the approval of the NHPUC on terms
acceptable to both PSNH and the Operating Companies. The principal terms of the
agreement generally call for the two Operating Companies to reduce the amount of
power sold annually to PSNH to 70% of the plants' capacities, and to reduce the
price per kilowatt paid by PSNH to $0.06 per kilowatt hour, escalating three
percent per year for the remainder of the term of the original, applicable rate
order. In consideration of these reductions, the Operating Companies would
receive certain cash settlement payments, paid over several years. The
settlement agreement has technically expired; however, no party to the
settlement agreement has notified the other that it would not proceed in
accordance with the terms thereof if approved by NHPUC, nor was any party
required to do so. The settlement, if approved and executed, is not expected to
have a material impact on the Company's results of operations or financial
condition. Should the matter not reach resolution, the Company does not believe
that PSNH has the right to take unilateral action to reduce the price of
purchased power under such arrangements. Rejection of the Company's rate orders
would result in a claim for damages by the Company and could be the subject of
lengthy litigation. In January 1997, NU disclosed in a filing with the
Securities and Exchange Commission that if a proposed deregulation plan for the
New Hampshire electric utility


                                       20
<PAGE>

10.   Contingencies (continued)

industry were adopted, PSNH could default on certain financial obligations and
seek bankruptcy protection. In February 1997, NHPUC voted to adopt a
deregulation plan, and in March 1997, PSNH filed suit to block the plan. In
March 1997, the federal district court issued a temporary restraining order
which prohibits the NHPUC from implementing the deregulation plan as it affects
PSNH, pending a determination by the court as to whether PSNH's claim could then
be heard by the court. In April 1997, the court ruled that it could hear the
case and ordered that the restraining order continue indefinitely pending the
outcome of the suit. In addition, in March 1997, the Company, along with a group
of other biomass power producers, filed a motion with the NHPUC seeking
clarification of the NHPUC's proposed deregulation plan regarding several
issues, including purchase requirements and payment of current rate order prices
with respect to the Company's energy output. In May 1998, NHPUC issued a written
ruling rejecting the settlement agreements and modifications that would impact
PSNH's ability to finance and secure the settlement agreement. No assurances may
be made as to the outcome of this matter. An unfavorable resolution of this
matter, including the bankruptcy of PSNH, could have a material adverse effect
on the Company's results of operations and financial position.
      The Company is contingently liable with respect to lawsuits and matters
that arose in the normal course of business. In the opinion of management, these
contingencies will not have a material adverse effect on the financial position
or results of operations of the Company.

11.   Termination of Power-sales Agreement

      In August 1993, in exchange for a cash payment, the Company agreed to
terminate a power-sales agreement with a utility, which required the utility to
purchase the power that was to be generated by the Company's 55-megawatt natural
gas cogeneration facility under development in Staten Island, New York.
      Under the agreement, the Company received $18.0 million in a series of
payments through May 1997, plus interest at 5.8%. The Company would have been
obligated to return $8.2 million of this amount if the Company had elected to
proceed with the Staten Island facility and the plant were to commence
commercial operation before January 1, 2000. Accordingly, the Company deferred
recognition of $8.2 million through fiscal 1996, pending final determination of
the project's status.
      During fiscal 1997, the Company determined that due to continuing economic
conditions in the domestic energy market it would not be feasible to design,
construct, and commence commercial operation of the Staten Island facility prior
to January 1, 2000. As a result, the refund obligation terminated and the
previously deferred revenue was recognized during fiscal 1997.



                                       21
<PAGE>

12.   Long-term Obligations

      Long-term obligations consist of the following:
<TABLE>
<CAPTION>

<S>                                                                                    <C>        <C> 
(In thousands except per share amounts)                                                     1998       1997
- -------------------------------------------------------------------------------------- ---------- ----------

8.3% Nonrecourse Tax-exempt Revenue Bonds, Series 1989 (payable in                     $  17,400  $  20,700
  semi-annual installments, with a final payment in December 2000)
8.3% Nonrecourse Tax-exempt Revenue Bonds, Series 1990 (payable in                        18,200     22,000
  semi-annual installments, with a final payment in December 2000)
6.0% Nonrecourse Tax-exempt Revenue Bonds, Series 1991 (payable in                        16,200     35,200
  semi-annual installments, with a final payment in June 2000)
Noninterest-bearing Subordinated Convertible Debentures, due March 2001                    2,450     12,148
(convertible at $13.56 per share)
4.875% Subordinated Convertible Debentures, due April 2004 (convertible at                44,950     50,000
  $16.50 per share)
4.0% Subordinated Convertible Debentures, due January 2001 (convertible at                     -     68,500
  $6.33 per share, due to Thermo Electron)
                                                                                       ---------  ---------

                                                                                          99,200    208,548
Less:  Current Portion of Long-term Obligations                                           18,100     26,100
                                                                                       ---------  ---------

                                                                                       $  81,100  $ 182,448
                                                                                       =========  =========

      The annual requirements for long-term obligations are as follows:

(In thousands)
- -------------------------------------------------------------------------------------- ---------- ----------

1999                                                                                                $18,100
2000                                                                                                 19,200
2001                                                                                                 16,950
2002                                                                                                      -
2003                                                                                                      -
Thereafter                                                                                           44,950
                                                                                                    -------
                                                                                                    $99,200
                                                                                                  =========
</TABLE>

      The Company's noninterest-bearing and 4.875% subordinated convertible
debentures are guaranteed on a subordinated basis by Thermo Electron.
      In May 1998, Thermo Electron converted $68.5 million principal amount of
the 4.0% subordinated convertible debentures into 10,815,846 shares of the
Company's common stock. In fiscal 1998 and 1997, $14.7 million and $19.6 million
principal amount, respectively, of the noninterest-bearing and 4.875%
subordinated convertible debentures were converted into 1,021,244 shares and
1,443,869 shares, respectively, of the Company's common stock.
      The tax-exempt revenue bonds were issued by the California Pollution
Control Financing Authority to finance the construction of the Delano I and
Delano II facilities. The obligations are credit-enhanced by a letter of credit
issued by a bank group. Repayment of the debt is an obligation of Delano and the
obligations are nonrecourse to the Company. As of October 3, 1998, Delano I and
Delano II plant and equipment totaling approximately $173.0 million were
collateral for this debt.

                                       22
<PAGE>

12.   Long-term Obligations (continued)

      The Company leases the Mendota facility under a capital lease. The
carrying amount of the facility is $47.0 million, which is included in property,
plant, and equipment, net in the accompanying balance sheet.
      The future minimum lease payments under the Mendota lease are as follows:
<TABLE>
<CAPTION>

<S>                                                                                                 <C> 
(In thousands)
- ------------------------------------------------------------------------------------- ---------- ----------

1999                                                                                                $12,033
2000                                                                                                 12,868
                                                                                                    -------

                                                                                                     24,901
Less:  Amount Representing Interest                                                                   2,623
                                                                                                    -------

Present Value of Minimum Lease Payments                                                              22,278

Less:  Current Portion                                                                                9,932
                                                                                                    -------

Long-term Capital Lease Obligations                                                                 $12,346
                                                                                                    =======
</TABLE>

      See Note 14 for information pertaining to the fair value of the Company's
long-term obligations.

13.   Business Segments, Significant Customers, and Concentrations of Credit
        Risk

      The Company's business is divided into two segments. The Energy segment
operates independent electric power-generation facilities, a subbituminous
coal-beneficiation facility, and a natural gas business. The Biopesticides
segment manufactures and sells biopesticides through the Company's
majority-owned Thermo Trilogy subsidiary.
      Revenues from three electric utility customers as a percentage of total
revenues were approximately 16%, 30%, and 30% in fiscal 1998; 18%, 31%, and 32%
in fiscal 1997; and 21%, 36%, and 36% in fiscal 1996.
      At fiscal year-end 1998 and 1997, a significant amount of accounts
receivable due to the Company was from its four electric utility customers. The
Company does not normally require collateral or other security to support its
accounts receivable. Management does not believe that this concentration of
credit risk has or will have a significant negative impact on the Company.


                                       23
<PAGE>

13.   Business Segments, Significant Customers, and Concentrations of Credit 
        Risk (continued)

      Information for fiscal 1998, 1997, and 1996, with respect to the Company's
business segments, is shown in the following table.
<TABLE>
<CAPTION>

<S>                                                                         <C>        <C>        <C> 
(In thousands)                                                                   1998      1997        1996
- --------------------------------------------------------------------------- ---------- ---------- ---------

Revenues:
  Energy                                                                    $ 175,943  $164,261    $148,389
  Biopesticides                                                                33,028    15,930       1,687
                                                                            ---------  --------   ---------

                                                                            $ 208,971  $180,191   $ 150,076
                                                                            =========  ========   =========

Income (Loss) Before Provision for Income Taxes and Minority
Interest:
  Energy                                                                    $  55,257  $ 55,662   $  44,146
  Biopesticides                                                                 2,749      (146)       (337)
  Corporate (a)                                                                (8,889)   (8,418)     (7,834)
                                                                            ---------  --------   ---------

  Total operating income                                                       49,117    47,098      35,975
  Interest and other expense, net                                                (525)   (8,804)     (9,649)
                                                                            ---------  --------   ---------

                                                                            $  48,592  $ 38,294   $  26,326
                                                                            =========  ========   =========

Identifiable Assets:
  Energy                                                                    $ 418,571  $384,002   $ 383,693
  Biopesticides                                                                50,620    29,338       8,814
  Corporate (b)                                                                35,920    71,965      56,638
                                                                            ---------  --------   ---------

                                                                            $ 505,111  $485,305   $ 449,145
                                                                            =========  ========   =========

Depreciation and Amortization:
  Energy                                                                    $  21,260  $ 20,106   $  20,120
  Biopesticides                                                                 2,385     1,000         125
  Corporate                                                                       258       512         180
                                                                            ---------  --------   ---------

                                                                            $  23,903  $ 21,618   $  20,425
                                                                            =========  ========   =========

Capital Expenditures:
  Energy                                                                    $  46,261  $ 16,528   $  36,579
  Biopesticides                                                                 1,943     1,167           -
  Corporate                                                                       219        15           8
                                                                            ---------  --------   ---------

                                                                            $  48,423  $ 17,710   $  36,587
                                                                            =========  ========   =========
</TABLE>

(a)  Primarily general and administrative expenses
(b)  Primarily cash and cash equivalents

                                       24
<PAGE>


14.   Fair Value of Financial Instruments

      The Company's financial instruments consist mainly of cash and cash
equivalents, restricted funds, accounts receivable, due from parent company,
long-term available-for-sale investment, current portion of long-term
obligations, accounts payable, due to parent company, long-term obligations,
forward exchange contracts, and interest rate swaps. The carrying amounts of
these financial instruments, with the exception of long-term available-for-sale
investments, due from parent company, long-term obligations, forward exchange
contracts, and interest rate swaps, approximate fair value due to their
short-term nature.
      The Company's long-term available-for-sale investments are carried at fair
value in the accompanying balance sheet. The fair value was determined based on
a quoted market price. See Note 2 for the fair value information pertaining to
this financial instrument. The carrying amount of due from parent company in the
accompanying 1997 balance sheet approximates fair value.
      During fiscal 1997, the Company entered into a forward exchange contract
to hedge certain customer deposits denominated in currencies other than its
foreign subsidiary's local currency. The purpose of the Company's foreign
currency hedging activities was to protect the Company's local currency cash
flows related to the customer deposits from fluctuations in foreign exchange
rates. The Company was not party to any foreign exchange contracts at year-end
1998. The carrying amount and fair value of the Company's long-term obligations
and off-balance sheet financial instruments are as follows:
<TABLE>
<CAPTION>
<S>                                                             <C>          <C>       <C>        <C>  
                                                                         1998                  1997
                                                                --------------------  ---------------------
                                                                 Carrying       Fair   Carrying        Fair
(In thousands)                                                     Amount      Value     Amount       Value
- --------------------------------------------------------------- ---------- ---------- ---------- ----------

Long-term Obligations:
  Convertible obligations                                        $ 47,400    $47,617   $130,648   $ 224,294
  Other long-term obligations                                      46,046     48,098     74,042      64,861
                                                                 --------    -------   --------   ---------

                                                                 $ 93,446    $95,715   $204,690   $ 289,155
                                                                 ========    =======   ========   =========

Off-balance-sheet Financial Instruments:
  Interest rate swaps (receivable) payable                                   $(2,052)             $   9,199
  Foreign exchange contract payable                                                -                     69
</TABLE>

      The fair value of long-term obligations was determined based on quoted
market prices and on borrowing rates available to the Company at the respective
year ends. The fair value of convertible obligations at fiscal year-end 1998 and
1997 exceeds the carrying amount primarily due to the market price of the
Company's common stock exceeding the conversion price of the convertible
obligations.
      Interest rate swap agreements are in place on the borrowings associated
with the Delano I and Delano II facilities and are with a different
counter-party than the holders of the underlying debt. These swaps have terms
expiring in December 2000 commensurate with the final maturity of the debt. The
swaps have effectively converted floating rate debt to fixed rate borrowings.
Management believes any credit risk associated with the swaps is remote. The
notional amount of the swap agreements was $127.0 million at fiscal year-end
1998 and 1997. The fair value of such agreements is the estimated amount that
the Company would pay upon termination of the contract, taking into account the
change in market interest rates and creditworthiness of the counterparties.
During fiscal 1998 and 1997, the average variable rate received under the swap
agreement was 3.6% and 3.5%, respectively.
      The fair value of forward exchange contracts in fiscal 1997 was the
estimated amount that the Company would be required to pay if it were to
terminate the contract, taking into account the change in foreign exchange
rates.

                                       25
<PAGE>

15.   Earnings per Share

      Basic and diluted earnings per share were calculated as follows:
<TABLE>
<CAPTION>

<S>                                                                            <C>      <C>      <C> 
(In thousands except per share amounts)                                           1998      1997     1996
- ------------------------------------------------------------------------------ -------- --------- --------

Basic
Net Income                                                                     $31,209  $ 22,545  $17,780
                                                                               -------  --------  -------

Weighted Average Shares                                                         29,299    24,613   23,528
                                                                               -------  --------  -------

Basic Earnings per Share                                                       $  1.07  $    .92  $   .76
                                                                               =======  ========  =======

Diluted
Net Income                                                                     $31,209  $ 22,545  $17,780
Effect of:
  Convertible debentures                                                         2,387     2,374    1,644
  Majority-owned subsidiary's dilutive securities                                  (13)        -        -
                                                                               -------  --------  -------

Income Available to Common Shareholders, as Adjusted                           $33,583  $ 24,919  $19,424
                                                                               -------  --------  -------

Weighted Average Shares                                                         29,299    24,613   23,528
Effect of:
  Convertible debentures                                                         9,541    13,746   12,262
  Stock options                                                                    312       381      502
                                                                               -------  --------  -------

Weighted Average Shares, as Adjusted                                            39,152    38,740   36,292
                                                                               -------  --------  -------

Diluted Earnings per Share                                                     $   .86  $    .64  $   .54
                                                                               =======  ========  =======
</TABLE>

      The computation of diluted earnings per share excludes the effect of
assuming the exercise of certain outstanding stock options because the effect
would be antidilutive. As of October 3, 1998, there were 105,500 of such options
outstanding, with exercise prices ranging from $19.23 to $19.25 per share.

                                       26
<PAGE>

16.   Unaudited Quarterly Information
<TABLE>
<CAPTION>

(In thousands except per share amounts)
<S>                                                             <C>           <C>        <C>      <C>    <C>    <C>

                                                                                                        
1998                                                            First(a)       Second      Third  Fourth(b)
- --------------------------------------------------------------- --------- ------------ ---------- ----------

Revenues                                                         $47,809      $47,207    $50,748    $63,207
Gross Profit                                                      16,414       13,562     16,328     27,161
Net Income                                                         9,258        4,198      4,824     12,929
Earnings per Share:
  Basic                                                              .38          .17        .15        .36
  Diluted                                                            .25          .13        .14        .34

1997                                                               First    Second(c)      Third  Fourth(d)
- --------------------------------------------------------------- --------- ------------ ---------- ----------

Revenues                                                          $38,514     $38,674    $43,524    $59,479
Gross Profit                                                       12,260       9,557     14,340     29,424
Net Income                                                          4,300         952      3,598     13,695
Earnings per Share:
  Basic                                                              .18          .04        .15        .56
  Diluted                                                            .12          .04        .11        .37
</TABLE>

(a) Reflects the November 1997 acquisition of the Bt business of Novartis and a
    nontaxable gain of $6.3 million from the issuance of stock by subsidiary
(b) Reflects the inclusion of $1.9 million of fees received from the release by
    the Company of certain rights relating to power-generating equipment
(c) Reflects the January 1997 acquisition of the biosys business
(d) Reflects the inclusion of $8.2 million of previously deferred revenue in
    connection with the termination of a power-sales agreement relating to a
    cogeneration facility in Staten Island, New York

17.    Subsequent Event

      In November 1998, the Company's employees, excluding its officers and
directors, were offered the opportunity to exchange previously granted options
to purchase shares of Company common stock for an amount of options equal to
half of the number of options previously held, exercisable at a price equal to
the fair market value at the time of the exchange offer. Holders of options to
acquire 71,200 shares at a weighted average exercise price of $14.93 elected to
participate in this exchange and, as a result, received options to purchase
35,600 shares of Company common stock at $10.58 per share. The other terms of
the new options are the same as the exchanged options except that the holders
may not sell shares purchased pursuant to such new options for six months from
the exchange date.


                                       27
<PAGE>

Thermo Ecotek Corporation                         1998 Financial Statements

                                 Report of Independent Public Accountants
To the Shareholders and Board of Directors of Thermo Ecotek Corporation:

      We have audited the accompanying consolidated balance sheet of Thermo
Ecotek Corporation (a Delaware corporation and 94%-owned subsidiary of Thermo
Electron Corporation) and subsidiaries as of October 3, 1998, and September 27,
1997, and the related consolidated statements of income, shareholders'
investment, and cash flows for each of the three years in the period ended
October 3, 1998. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
consolidated financial statements 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 Thermo
Ecotek Corporation and subsidiaries as of October 3, 1998, and September 27,
1997, and the results of their operations and their cash flows for each of the
three years in the period ended October 3, 1998, in conformity with generally
accepted accounting principles.



                                                          Arthur Andersen LLP



Boston, Massachusetts November 9, 1998 (except with respect to the matter
discussed in Note 17, as to which the date is November 24, 1998)




                                       28
<PAGE>

Thermo Ecotek Corporation                             1998 Financial Statements

                                 Management's Discussion and Analysis of
                              Financial Condition and Results of Operations

      Forward-looking statements, within the meaning of Section 21E of the
Securities Exchange Act of 1934, are made throughout this Management's
Discussion and Analysis of Financial Condition and Results of Operations. For
this purpose, any statements contained herein that are not statements of
historical fact may be deemed to be forward-looking statements. Without limiting
the foregoing, the words "believes," "anticipates," "plans," "expects," "seeks,"
"estimates," and similar expressions are intended to identify forward-looking
statements. There are a number of important factors that could cause the results
of the Company to differ materially from those indicated by such forward-looking
statements, including those detailed immediately after this Management's
Discussion and Analysis of Financial Condition and Results of Operations under
the heading "Forward-looking Statements."

Overview

      The Company reports its results in two business segments. The Energy
segment operates independent electric power-generation facilities through joint
ventures, limited partnerships, or wholly owned subsidiaries (the Operating
Companies) and also operates a subbituminous coal-beneficiation facility (the
K-Fuel Facility) and a natural gas business (Star Natural Gas). The
Biopesticides segment manufactures and sells biopesticides through the Company's
majority-owned subsidiary, Thermo Trilogy Corporation.
      In the Energy segment, each Operating Company in the United States sells
power under a long-term power-sales agreement. The profitability of operating
the Company's facilities depends on the price received for power under the
power-sales agreements with power purchasers, on plant performance or
availability, and on the fuel, operating, and maintenance costs for the
facilities. As of January 1998, the Energy segment operates a 12-megawatt energy
center and five auxiliary boilers in the Czech Republic. The Energy segment
earns a disproportionately high share of its income in May to October due to the
rate structures under the power-sales agreements for its California plants,
which provide strong incentives to operate during this period of high demand.
Conversely, the Energy segment has historically operated at marginal
profitability during the second fiscal quarter due to the rate structure under
these agreements. The Energy segment's profitability is also dependent on the
amount of development expenses that it incurs.
      The Company has also entered the field of engineered clean fuels through a
limited partnership agreement with KFx, Inc. The Company is a 95% partner in a
partnership established to develop, construct, and operate a subbituminous
coal-beneficiation facility using the patented K-Fuel technology licensed from
KFx. This facility, located near Gillette, Wyoming, uses the K-Fuel technology,
which transforms low-energy, high-moisture coal into low-moisture, high-energy
fuel with reduced sulfur. A tax credit per ton of fuel produced and sold is
available with respect to qualifying alternative fuels from a facility placed in
service before June 30, 1998, pursuant to a binding written contract in effect
before December 31, 1996. The economic returns of the K-Fuel Facility primarily
result from tax credits on the facility's production of K-Fuel. The K-Fuel
Facility reports operating losses for financial reporting purposes, primarily as
a result of recording depreciation over the expected life of the tax credit.
      The Company has expanded its energy operations into international markets
and has begun business- development efforts in Italy and the Czech Republic. In
January 1998, the Company, through a wholly owned subsidiary's participation in
a joint venture, indirectly acquired a majority interest in the assets of a
12-megawatt energy center near Tabor, Czech Republic, along with the business of
five auxiliary boilers in the town of Pribram, Czech Republic (the Czech
Republic operations). The Company has begun construction to expand the
12-megawatt facility to 50-megawatt capacity. The cost of business-development
efforts is expected to increase as the Company expands into these markets due to
increased complexity inherent in foreign development. In addition, the amount of
cash required to fund equity investments is expected to increase, due to the
financing requirements of lenders in foreign markets.
      During fiscal 1998, the Company established its Star Natural Gas
subsidiary in Dallas, Texas, to pursue opportunities in the natural gas
gathering, processing, storage, and marketing business.

                                       29
<PAGE>


Overview (continued)

      Thermo Trilogy's biopesticide products include botanical extracts from the
seed of the tropical neem tree, microbial-based pesticides (fungal-based
insecticides and fungicides, bacterial-based insecticides, bacculovirus, and
beneficial nematodes), insect pheromone-based products such as traps and lures,
and disease-free sugar cane planting stock. These biopesticide products are used
as alternatives or complements to conventional chemical-based pest-control
technologies. In January 1997, Thermo Trilogy acquired substantially all of the
assets of biosys, inc. In November 1997, Thermo Trilogy acquired the sprayable
bacillus thuringiensis (Bt) - biopesticide business of Novartis AG and its
affiliates (the Bt business of Novartis; Note 3). Thermo Trilogy currently
markets its products predominantly for use in the northern hemisphere, where the
growing season generally runs from March to October; therefore, the seasonal
nature of agriculture will cause Thermo Trilogy's product sales to be
concentrated during such period and will result in substantial variations in
quarter-to-quarter results.
      Since its inception, the Company has derived a substantial majority of its
revenue from the development, construction, and operation of biomass-fueled
electric-generation facilities. While the Company's U.S. biomass energy business
is expected to continue to generate revenues for the foreseeable future, the
Company expects the aggregate revenues and profitability associated with this
business to decline significantly beginning in fiscal 2000. In addition, within
the next few years, the Company expects a substantial portion of its revenues to
be derived from new business ventures in clean power resources, clean fuels, and
biopesticides. A major portion of the Company's efforts will be focused on
developing and acquiring new power projects, additional clean fuel projects, and
its biopesticides business. The Company has had limited prior experience in the
repowering of power plants and the development and sale of clean fuels, and
there can be no assurance that the Company will be able to successfully develop,
market, or sell its products and services in these areas. The Company's future
success will depend significantly on its ability to develop, introduce, and
integrate new products and services in these areas. No assurance can be given
that the Company will be successful in this regard. Any failure or inability of
the Company to implement these strategies would have a material adverse effect
on the Company's business, financial condition, and results of operations.

Results of Operations

Fiscal 1998 Compared With Fiscal 1997
      Total revenues increased 16% to $209.0 million in fiscal 1998 from $180.2
million in fiscal 1997. Revenues from the Energy segment increased to $176.0
million in fiscal 1998 from $164.3 million in fiscal 1997. The increase was
primarily due to higher contractual energy rates at the Company's Delano,
Gorbell, and Whitefield facilities and, to a lesser extent, the inclusion of
$6.0 million of revenues from the Czech Republic operations, acquired in January
1998. Revenues in fiscal 1998 included $1.9 million of fees received from the
release by the Company of certain rights relating to power-generating equipment.
Revenues in fiscal 1997 included $8.2 million of previously deferred revenues
related to an August 1993 agreement with a utility (Note 11). From various dates
in 1998 onward, no further rate increases will occur at the Company's four
California energy facilities.
      Revenues at Thermo Trilogy increased to $33.0 million in fiscal 1998 from
$15.9 million in fiscal 1997. The increase was primarily due to the inclusion of
$14.6 million of revenues from the Bt business of Novartis, acquired in November
1997.
      The gross profit margin decreased to 35% in fiscal 1998 from 36% in fiscal
1997. The gross profit margin for the Energy segment decreased to 34% in fiscal
1998 from 36% in fiscal 1997. The decrease was primarily due to the effect on
gross profit in fiscal 1997 of recording $8.2 million of previously deferred
revenues and, to a lesser extent, losses in fiscal 1998 at the Company's K-Fuel
Facility associated with its early stages of operations. As discussed in the
overview, the economics of this facility arise from tax benefits and it reports
losses for financial reporting purposes.
      The gross profit margin for Thermo Trilogy decreased to 42% in fiscal 1998
from 43% in fiscal 1997, primarily due to the inclusion of lower-margin revenues
from the Bt business of Novartis.

                                       30
<PAGE>



Fiscal 1998 Compared With Fiscal 1997 (continued)
      The power-sales agreements for the Company's Woodland, Mendota, and Delano
plants in California are so-called standard offer #4 (SO#4) contracts, which
require Pacific Gas & Electric (PG&E), in the case of Woodland and Mendota, and
Southern California Edison (SCE), in the case of Delano I and Delano II, to
purchase the power output of the projects at fixed rates until 2000 in the case
of Woodland and Mendota, and 2001 in the case of Delano. However, with respect
to Woodland and Mendota, PG&E has asserted that the fixed rates under its
agreements will terminate mid-1999, although the Company disputes this
assertion. Thereafter, the utility will pay a rate based upon the costs that
would have otherwise been incurred by the purchasing utilities in generating
their own electricity or in purchasing it from other sources (avoided cost; as
determined from time to time by the California Public Utility Commission).
Avoided cost is determined pursuant to a formula that is intended to estimate
the price that the utility would, but for its contract with the power producer,
be paying for the same amount of energy. The rate fluctuates with the price of
fuels and certain other factors. At present, the avoided cost is substantially
lower than the payments currently being made by PG&E and SCE to the Company
under the fixed-rate portions of its contracts. In addition, although it is
difficult to predict future levels of avoided cost, based on current estimates,
avoided cost is expected to be substantially lower in 2000 than the rates
currently being paid by PG&E and SCE under its fixed-rate contracts. The Company
expects, that at current avoided cost rates, absent sufficient reductions in
fuel prices and other operating costs, the Company's Mendota and Delano plants
would operate at substantially reduced operating income levels or at a loss
beginning in fiscal 2001. In fiscal 1998, the Mendota and Delano plants'
aggregate operating income was approximately $43.0 million. Further, if the
Woodland plant were to operate at projected avoided cost levels, substantial
losses would result, primarily due to nonrecourse lease obligations that extend
beyond 2000. Absent sufficient reductions in fuel prices and other operating
costs, under such circumstances the Company would draw down power reserve funds
to cover operating cash shortfalls and then, should such funds be depleted,
either renegotiate its nonrecourse lease for the Woodland plant or forfeit its
interest in the plant. During the first quarter of fiscal 1997, the Company
began recording as an expense the funding of reserves required under Woodland's
nonrecourse lease agreement to cover projected shortfalls in lease payments
beginning in 2000. Consequently, the results of the Woodland plant were reduced
to approximately breakeven in fiscal 1998. During fiscal 1997 and 1996, the
Woodland plant contributed $1.0 million and $5.1 million of operating income,
respectively. If PG&E ultimately prevails in its assertion that its obligation
to pay fixed rates ends in mid-1999, and if the Company is unsuccessful in
renegotiating the terms of its lease or its power purchase agreement with PG&E,
the Company's investment in its Woodland operating assets could be impaired by
approximately $3 to 5 million, based on projected cash flows. This impairment
and the operating losses that would arise in fiscal 1999 if the Woodland
facility's operating costs exceeded its revenues would adversely affect the
Company's future results of operations.
      The Company began reporting the K-Fuel Facility's results of operations in
April 1998. Although the facility has operated and produced commercially salable
product, the Company has encountered certain difficulties in optimizing its
performance to achieve optimal and sustained operation. The Company has
addressed and resolved certain problems previously encountered, including a fire
at the facility and certain construction problems, including issues relating to
the flow of materials within the facility and the design and operation of
certain pressure-release equipment. The Company continues to experience certain
operational problems relating to tar and fines residue build-up within the
system during production and other product-quality issues related to product
dusting. The Company is actively exploring solutions to these problems. Because
the technology being developed is new and untested, no assurance can be given
that other difficulties will not arise or that the Company will be able to
correct these problems and achieve optimal and sustained performance.
      Selling, general, and administrative expenses as a percentage of revenues
increased to 11% in fiscal 1998 from 9% in fiscal 1997. The increase resulted
primarily from the inclusion of higher selling, general, and administrative
expenses as a percentage of revenues at Thermo Trilogy due to the acquisition of
the Bt business of Novartis.
      Research and development expenses represent Thermo Trilogy's ongoing new
product development and increased to $2.4 million in fiscal 1998 from $1.6
million in fiscal 1997 due to the inclusion of expenses from the Bt business of
Novartis.

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<PAGE>



Fiscal 1998 Compared With Fiscal 1997 (continued)
      Interest income decreased to $4.1 million in fiscal 1998 from $5.1 million
in fiscal 1997. The decrease was primarily due to lower average invested
balances due to cash expended for the acquisition of the Bt business of
Novartis, the acquisition and expansion of the Czech Republic operations, the
repurchase of Company common stock, construction of the K-Fuel Facility, and the
purchase of power-generation facilities and related sites in California.
      Interest expense decreased to $11.0 million in fiscal 1998 from $13.9
million in fiscal 1997. The decrease was primarily due to lower outstanding debt
related to the Company's Delano and Mendota plants and, to a lesser extent, the
conversion by Thermo Electron of $68.5 million principal amount of the Company's
4% subordinated convertible debentures in May 1998.
      The Company and Thermo Electron have adopted a strategy of spinning out
certain of their businesses into separate subsidiaries and having these
subsidiaries sell a minority interest to outside investors. The Company believes
that this strategy provides additional motivation and incentives for the
management of the subsidiary through the establishment of subsidiary-level stock
option incentive programs, as well as capital to support the subsidiaries'
growth. As a result of the issuance of common stock by Thermo Trilogy in fiscal
1998, the Company recorded a gain of $6.3 million. This gain represents an
increase in the Company's proportionate share of the subsidiary's equity and is
classified as gain on issuance of stock by subsidiary in the accompanying
statement of income. The size and timing of these transactions are dependent on
market and other conditions that are beyond the Company's control. In addition,
in October 1995, the Financial Accounting Standards Board (FASB) issued an
exposure draft of a Proposed Statement of Financial Accounting Standards,
"Consolidated Financial Statements: Policy and Procedures" (the Proposed
Statement). The Proposed Statement would establish new rules for how
consolidated financial statements should be prepared. If the Proposed Statement
is adopted, there would be significant changes in the way the Company records
certain transactions of its controlled subsidiaries. Among those changes, any
sale of the stock of a subsidiary that does not result in a loss of control
would be accounted for as a transaction in equity of the consolidated entity
with no gain or loss being recorded. The exposure draft addresses the
consolidation issues in two parts: consolidation procedures, which includes
proposed rule changes affecting the Company's ability to recognize gains on
issuances of subsidiary stock, and consolidation policy, which does not address
accounting for such gains. During 1997, the FASB decided to focus its efforts on
the consolidation policy part of the exposure draft and to consider resuming
discussion on consolidation procedures after completion of the efforts on
consolidation policy. The timing and content of any final statement are
uncertain.
      Equity in earnings of joint venture represents the Company's proportionate
share of earnings from a joint venture.
      The effective tax rates were 32% and 38% in fiscal 1998 and fiscal 1997,
respectively. The effective tax rate in fiscal 1998 was below the statutory
federal income tax rate due to the nontaxable gain on issuance of stock by
subsidiary and the exclusion of income taxed directly to a minority partner,
offset in part by state income taxes. The effective tax rate in fiscal 1997
exceeded the statutory federal income tax rate, primarily due to the impact of
state income taxes, offset in part by the exclusion of income taxed directly to
a minority partner.
      Minority interest expense represents the allocation of income from plant
operations to a minority partner in an Operating Company and, in fiscal 1998,
the minority shareholders' proportionate share of Thermo Trilogy's results.

Fiscal 1997 Compared With Fiscal 1996
      Revenues increased 20% to $180.2 million in fiscal 1997 from $150.1
million in fiscal 1996. Revenues from the Energy segment increased to $164.3
million in fiscal 1997 from $148.4 million in fiscal 1996. During fiscal 1997,
the Company decided not to proceed in its development of a natural gas
cogeneration facility in Staten Island, New York and, accordingly, recorded $8.2
million of previously deferred revenues related to an August 1993 agreement with
a utility (Note 11). The increase in revenues was also due to higher contractual
energy rates at all of the Company's facilities, except the Hemphill plant.


                                       32
<PAGE>

Fiscal 1997 Compared With Fiscal 1996 (continued)
      Revenues at Thermo Trilogy increased to $15.9 million in fiscal 1997 from
$1.7 million in fiscal 1996. The increase was due to the inclusion of a full
year of operations of the biopesticide business of Grace, acquired in May 1996,
as well as the acquisition of the biosys business in January 1997.
      The gross profit margin increased to 36% during fiscal 1997 from 32% in
fiscal 1996. The gross profit margin for the Energy segment increased to 36% in
fiscal 1997 from 32% in fiscal 1996. The improvement results primarily from the
effect of the Staten Island agreement and, to a lesser extent, the effect of
higher contractual energy rates. The increases were offset in part by lower
profitability at the Company's Woodland plant as discussed in the results of
operations for fiscal 1998.
      The gross profit margin for Thermo Trilogy decreased to 43% in fiscal 1997
from 59% in fiscal 1996, primarily due to the inclusion of lower-margin revenues
from the biosys business.
      Selling, general, and administrative expenses as a percentage of revenues
increased to 9% in fiscal 1997 from 8% in fiscal 1996. The increase resulted
primarily from the inclusion of higher selling, general, and administrative
expenses as a percentage of revenues at the biopesticide business of Grace for a
full year, offset in part by higher revenues.
      Research and development expenses represent Thermo Trilogy's ongoing new
product development and increased to $1.6 million in fiscal 1997 from $0.7
million in fiscal 1996 due to the inclusion of a full year of expenses of the
biopesticide business of Grace in fiscal 1997, as well as the inclusion of
expenses from the biosys business.
      Interest income was unchanged at $5.1 million in fiscal 1997 and fiscal
1996. Increases in fiscal 1997 invested balances as a result of the Company's
April 1997 issuance of 4.875% subordinated convertible debentures and operating
cash flows were offset by amounts expended for the repurchase of the Company's
common stock, construction of the Gillette, Wyoming, coal-beneficiation
facility, and the January 1997 acquisition of biosys. Interest expense decreased
to $13.9 million in fiscal 1997 from $14.7 million in fiscal 1996, due to lower
outstanding debt related to the Company's Delano and Mendota plants, offset in
part by an increase in interest expense due to the April 1997 issuance of 4.875%
subordinated convertible debentures.
      Equity in earnings (loss) of joint venture represents the Company's
proportionate share of the results of a joint venture.
      The effective tax rates were 38% and 28% in fiscal 1997 and 1996,
respectively. The fiscal 1997 rate exceeded the statutory federal income tax
rate as a result of the impact of state income taxes, offset in part by the
exclusion of income taxed directly to a minority partner. The effective tax rate
in fiscal 1996 was lower than the statutory federal income tax rate due to the
full utilization of tax loss and credit carryforwards as a result of the
resolution of certain tax contingencies, offset in part by the impact of state
income taxes.
      Minority interest expense represents the allocation of income from plant
operations to a minority partner in an Operating Company.

Liquidity and Capital Resources

        Working capital was $83.6 million at October 3, 1998, compared with
$90.7 million at September 27, 1997. The Company had cash, cash equivalents, and
current restricted funds of $65.9 million at October 3, 1998, compared with
$104.3 million at September 27, 1997. Current restricted funds held in trust
pursuant to certain lease and debt agreements totaled $24.5 million and $20.8
million at October 3, 1998, and September 27, 1997, respectively. In addition,
cash and cash equivalents in the accompanying balance sheet include $12.0
million and $10.8 million at October 3, 1998, and September 27, 1997,
respectively, which are restricted by the terms of certain lease and financing
agreements. These restrictions limit the ability of the Operating Companies to
transfer funds to the Company in the form of dividends, loans, advances, or
other distributions. Further, until such time, if ever, as projections of
avoided-costs change, all cash flows from the Woodland Operating Company, other
than cash required for tax distributions, will be restricted from distribution
to the Company. During fiscal 1998, the Company's operating activities provided

                                       33
<PAGE>

Liquidity and Capital Resources (continued)

cash and restricted funds of $53.8 million. Cash from the Company's operations
was offset in part by $12.5 million of cash used to fund an increase in accounts
receivable. Cash of $6.4 million was provided by an increase in accounts
payable. These increases were primarily in support of increased volumes of
business due to the acquisition of the Bt business of Novartis in November 1997
and the purchase of the Czech Republic operations in January 1998.
      During fiscal 1998, the Company's investing activities used cash of $63.2
million. In November 1997, the Company, through Thermo Trilogy, acquired the Bt
business of Novartis for $19.1 million in cash and the assumption of certain
liabilities (Note 3). The Company expended $48.4 million for purchases of
property, plant, and equipment, as follows: In fiscal 1998, the Company acquired
two power-generation facilities and related sites in California for $9.5 million
in cash and the assumption of certain liabilities. The Company, through its
Limited Partnership Agreement with KFx Wyoming, Inc., expended $10.5 million for
the construction of the K-Fuel Facility. In January 1998, the Company, through a
wholly owned subsidiary's participation in a joint venture, indirectly acquired
a majority interest in certain power operations in the Czech Republic for $7.3
million in cash. The Company has begun construction on a 50-megawatt expansion
at the Czech Republic operations and has incurred $16.6 million in construction
costs. During fiscal 1999, the Company expects to make capital expenditures of
approximately $22 million, primarily for the expansion of the Czech Republic
operations.
      During fiscal 1998, the Company's financing activities used cash of $29.0
million. The Company used cash of $35.0 million for the repayment of long-term
obligations and payments under capital lease obligations related to three of its
California plants. In fiscal 1998, Thermo Trilogy issued shares of its common
stock in private placements for net proceeds of approximately $14.9 million.
Through a series of transactions commencing in April 1997, the Company's Board
of Directors has authorized the repurchase, through various dates, of up to $30
million of its own securities in the open market, or in negotiated transactions.
Through October 3, 1998, the Company had repurchased $29.9 million in common
stock under these authorizations, including $10.2 million during fiscal 1998.
Any such purchases are funded from working capital.
      In September 1996, the Company, through a wholly owned subsidiary, formed
a joint venture with Marcegaglia Group of Mantova, Italy, to develop, own, and
operate biomass-fueled electric power facilities in that country, which may
require significant equity investments if development efforts are successful. In
January 1998, the Company, through a wholly owned subsidiary, entered into a
joint development agreement with EMD Praha Spol s.r.o. in the Czech Republic.
Participation in the joint development agreement may require significant equity
investments if development efforts are successful.
      The Company has commenced an expansion project of its Czech Republic
operations, acquired in January 1998. The Company estimates the total cost of
this expansion will be $32 million, of which it expects approximately 50% will
ultimately be funded by bank financing and the remainder from internal funds.
While the Company does not currently have any firm available credit facilities,
it does not expect to require funding for currently existing operations in the
foreseeable future, with the exception of the financing required for the
expansion project at its Czech Republic operations. In addition, the Company is
in the early stages of developing projects in Italy and Southern California.
Equity investments required by the Company for these development efforts, if
successful, are uncertain, but may be significant. Although the Company's
projects are designed to produce positive cash flow over the long term, the
Company will have to obtain significant additional funds from time to time to
complete acquisitions and to meet project development requirements, including
the funding of equity investments. As the Company acquires, invests in, or
develops future plants, the Company may seek to finance them with nonrecourse
debt, internal funds, additional equity financing, or through borrowings from
third parties or Thermo Electron. Although Thermo Electron has expressed its
willingness to provide funds to the Company to help finance acquisitions and
equity investments in future projects, the Company has no agreements with Thermo
Electron or third parties that assure funds will be available on acceptable
terms, or at all.

                                       34
<PAGE>


Market Risk

      The Company is exposed to market risk from changes in equity prices,
foreign currency exchange rates, and interest rates, which could affect its
future results of operations and financial condition. The Company manages its
exposure to these risks through its regular operating and financing activities.

Equity Prices
      The Company's long-term available-for-sale investment includes an equity
security that is sensitive to fluctuations in price. In addition, the Company's
convertible obligations are sensitive to fluctuations in the price of Company
common stock into which the obligations are convertible. Changes in equity
prices would result in changes in the fair value of the Company's long-term
available-for-sale investment and convertible obligations due to the difference
between the current market price and the market price at the date of purchase or
issuance of the financial instrument. A 10% increase in the fiscal year-end 1998
market equity prices would result in a negative impact of $6.2 million on the
net fair value of the Company's price-sensitive equity financial instruments.

Foreign Currency Exchange Rates
      The Company generally views its investment in foreign subsidiaries with a
functional currency other than the Company's reporting currency as long-term.
The Company's investment in foreign subsidiaries is sensitive to fluctuations in
foreign currency exchange rates. The functional currencies of the Company's
foreign subsidiaries are principally denominated in Czech koruna and British
pounds sterling. The effect of a change in foreign exchange rates on the
Company's net investment in foreign subsidiaries is recorded as a separate
component of shareholders' investment. A 10% depreciation in fiscal year-end
1998 functional currencies, relative to the U.S. dollar, would result in a $0.8
million reduction of shareholders' investment.

Interest Rates
      The Company's long-term obligations and interest rate swap agreements are
sensitive to changes in interest rates. Interest rate changes would result in a
change in the fair value of these financial instruments due to the difference
between the market interest rate and the rate at the date of purchase or
issuance of the financial instrument. A 10% decrease in fiscal year-end 1998
market interest rates would result in a negative impact of $0.4 million on the
net fair value of the Company's interest-sensitive financial instruments.

Year 2000

      The Company continues to assess the potential impact of the year 2000 on
the Company's internal business systems, products, and operations. The Company's
year 2000 initiatives include: (i) testing and upgrading internal business
systems and facilities; (ii) contacting key suppliers, vendors, and customers to
determine their year 2000 compliance status; and (iii) developing contingency
plans.

The Company's State of Readiness
      The Company is in the process of testing and evaluating its critical
information technology systems for year 2000 compliance, including its
significant computer systems, software applications, and related equipment. The
Company is also currently in the process of upgrading or replacing its
noncompliant systems. The Company expects that all of its material information
technology systems will be year 2000 compliant by the end of 1999. The Company
is also in the process of hiring a consultant to evaluate the potential year
2000 impact on its facilities, including its buildings and utility systems. Any
problems that are identified will be prioritized and remediated based on their
assigned priority. The Company will continue periodic testing of its critical
internal business systems and facilities in an effort to minimize operating
disruptions due to year 2000 issues.

                                       35
<PAGE>


Year 2000 (continued)

      The Company is in the process of identifying and contacting suppliers,
vendors, and customers that are believed to be significant to the Company's
business operations, including its most significant electric utility customers,
in order to assess their year 2000 readiness. As part of this effort, the
Company is developing and will be distributing questionnaires relating to year
2000 compliance to its significant suppliers, vendors, and customers. The
Company intends to follow-up and monitor the year 2000 compliant progress of
significant suppliers, vendors, and customers that indicate that they are not
year 2000 compliant or that do not respond to the Company's questionnaires.

Contingency Plan
      The Company intends to develop a contingency plan that will allow its
primary business operations to continue despite disruptions due to year 2000
problems. This plan may include identifying and securing other suppliers,
increasing inventories, and modifying production facilities and schedules. As
the Company continues to evaluate the year 2000 readiness of its business
systems and facilities, significant suppliers, vendors, and customers, it will
modify and adjust its contingency plan as may be required.

Estimated Costs to Address the Company's Year 2000 Issues
      To date, costs incurred in connection with the year 2000 issue have not
been material. The Company does not expect total year 2000 remediation costs to
be material, but there can be no assurance that the Company will not encounter
unexpected costs or delays in achieving year 2000 compliance.

Risks of the Company's Year 2000 Issues
      While the Company is attempting to minimize any negative consequences
arising from the year 2000 issue, there can be no assurance that year 2000
problems will not have a material adverse impact on the Company's business,
operations, or financial condition. While the Company expects that upgrades to
its internal business systems will be completed in a timely fashion, there can
be no assurance that the Company will not encounter unexpected costs or delays.
If any of the Company's material suppliers, vendors, or customers experience
business disruptions due to year 2000 issues, the Company might also be
materially adversely affected. The Company's research and development,
production, distribution, financial, administrative, and communications
operations might be disrupted. There is expected to be a significant amount of
litigation relating to the year 2000 issue and there can be no assurance that
the Company will not incur material costs in defending or bringing lawsuits. Any
unexpected costs or delays arising from the year 2000 issue could have a
significant adverse impact on the Company's business, operations, and financial
condition.


                                       36
<PAGE>


Thermo Ecotek Corporation                             1998 Financial Statements

                                        Forward-looking Statements
      In connection with the "safe harbor" provisions of the Private Securities
Litigation Reform Act of 1995, the Company wishes to caution readers that the
following important factors, among others, in some cases have affected, and in
the future could affect, the Company's actual results and could cause its actual
results in fiscal 1999 and beyond to differ materially from those expressed in
any forward-looking statements made by, or on behalf of, the Company.

General

      Transition of Business Focus. Since its inception, the Company has derived
a substantial majority of its revenue from the development, construction, and
operation of biomass-fueled electric-generation facilities. While the Company's
U.S. biomass energy business is expected to continue to generate revenues for
the foreseeable future, the Company expects the aggregate revenues and
profitability associated with this business to decline significantly beginning
in fiscal 2000. In addition, within the next few years, the Company expects a
substantial portion of its revenues to be derived from new business ventures in
clean power resources, clean fuels, and biopesticides. A major portion of the
Company's efforts will be focused on developing and acquiring new power
projects, additional clean fuel projects, and its biopesticides business. The
Company has had limited prior experience in the repowering of power plants and
the development and sale of clean fuels, and there can be no assurance that the
Company will be able to successfully develop, market, or sell its products and
services in these areas. The Company's future success will depend significantly
on its ability to develop, introduce, and integrate new products and services in
these areas. No assurance can be given that the Company will be successful in
this regard. Any failure or inability of the Company to implement these
strategies would have a material adverse effect on the Company's business,
financial condition, and results of operations.

      Risks Associated with Acquisition Strategy. The Company's strategy
includes the acquisition of businesses that complement or augment the Company's
business strategy or existing product lines. Promising acquisitions are
difficult to identify and complete for a number of reasons, including
competition among prospective buyers and the need for regulatory approvals,
including antitrust approvals. Any acquisitions completed by the Company may be
made at substantial premiums over the fair value of the net assets of the
acquired companies that would result in substantial expenses for the
amortization of goodwill. There can be no assurance that the Company will be
able to complete future acquisitions or that the Company will be able to
successfully integrate any acquired businesses. In order to finance such
acquisitions, it may be necessary for the Company to raise additional funds
through public or private financings. Any equity or debt financing, if available
at all, may be on terms that are not favorable to the Company and may result in
dilution in its earnings per share.

Risks Associated with Clean Power Resources Business

    Development Risks

      Uncertainty of Project Development. The process of locating, developing,
permitting, financing, and constructing power plants is complex, lengthy, and
expensive. Only a small percentage of the projects that the Company evaluates
and pursues ultimately results in operating projects. As a result, the Company
may not recover any expenses that it incurs in the evaluation and development of
many projects.
      The Company owns and operates seven U.S. facilities that utilize biomass
as fuel. The Company is not currently considering the development of further
biomass-fueled projects in the U.S. due to high biomass fuel costs and the
relatively high costs of constructing and operating biomass-fueled plants. The
Company is considering the development of biomass-fueled projects
internationally in countries where market conditions may support profitable
biomass operations. The Company has also expanded its development focus to
include international clean power opportunities and other environmentally sound
technologies such as developing or repowering natural gas or coal-fueled power
facilities. In this regard, the Company has established operations in the Czech
Republic and Italy. The

                                       37
<PAGE>


completion or success of these projects and new ventures is subject to a number
of significant conditions, including obtaining financing, negotiating key
contracts with partners and other third parties, and other material development
activities such as obtaining required permits. No assurance can be given that
these projects or new ventures will be completed on a timely basis, or at all.
Any failure by the Company to successfully develop new projects would have a
material adverse effect on the future growth of the Company.

      Uncertainty of Access to Capital. The Company has sought to finance the
debt portion of each of its clean power projects in a manner that is
substantially nonrecourse to the Company. To minimize its equity commitment, the
Company must borrow substantial amounts from third-party lenders. The borrowings
are typically secured only by the applicable project assets and the capital
stock of the appropriate entity, typically a joint venture or limited
partnership in which the Company has a majority interest or wholly owned
subsidiary through which the Company develops its projects and operates its
facilities (an Operating Company). The Company anticipates that it will require
substantial financing to fund both the equity and debt components of future
projects. No assurance can be given that financing for future projects will be
available on a nonrecourse basis or on acceptable terms, or at all. Any failure
by the Company to obtain adequate amounts of financing on acceptable terms would
have a material adverse effect on the future growth of the Company.

      Dependence on Terms of Power-sales Agreement. The profitability of any of
the Company's clean power facilities is heavily dependent upon the power-sales
agreement that it has entered into with the electric utility or other customer.
Under certain of these agreements, in the event of service termination by the
Operating Company prior to the end of the applicable obligation period, the
Operating Company may be required to reimburse the utilities to the extent that
cumulative revenue calculated at established rates exceeds the amounts
calculated at the utilities avoided cost rates. Most of the Company's existing
power-sales agreements were obtained as a direct negotiation with the purchasing
utility. However, in recent years, in the U.S. such agreements have increasingly
been awarded as a result of competitive bidding. Consequently, obtaining a
power-sales agreement in the U.S. has become progressively more competitive and
expensive and, in many cases, less profitable. In the future, foreign
power-sales agreements also may increasingly be subject to competitive bidding.
In addition, the passage of the National Energy Policy Act of 1992 has removed
certain barriers to entry into the independent power market by utilities and
others, and is expected to increase competition in that market. There can be no
assurance that power-sales agreements, if any, entered into by the Company in
the future will be as profitable as the power-sales agreements to which the
Operating Companies are currently parties.

      Risks Associated with Doing Business Outside the United States. The
Company believes that significant growth opportunities in the power market exist
outside of the U.S. In that regard, the Company is currently pursuing projects
in Italy and the Czech Republic, and intends to identify other countries in
which to develop power projects. Doing business in many foreign countries
exposes the Company to many risks that are not present in the U.S., including
political, military, privatization, currency exchange and repatriation risks,
and higher credit risks related to the utility purchaser. In addition, it is
possible that legal obligations may be more difficult for the Company to enforce
in foreign countries and that the Company may be at a disadvantage in any legal
proceeding with the local entity. Local laws may also limit the ability of the
Company to hold a majority interest in some of the projects that it develops or
acquires. The Company's costs associated with business development efforts
outside the U.S. are expected to increase due to increased complexity inherent
in foreign development. In addition, the amount of cash required to fund equity
investments is expected to increase due to the financing requirements of lenders
in foreign markets.

      Intense Competition for Projects. The Company believes that there are
approximately 200 companies that are actively engaged in the worldwide
nonutility power market. Many of the companies in the power market have
substantially greater financial and technical resources than those of the
Company. Domestic competition in this market is expected to intensify as a
result of deregulation at the federal and state levels, and due to the trend
toward awarding contracts based upon competitive bidding. Such competition may
reduce the ability of the Company to secure future projects and may have a
material adverse effect on the profitability of future projects.

                                       38
<PAGE>


      Uncertainty of Regulatory or Community Support. Development, construction,
and operation of a clean power project requires numerous environmental, siting,
and other permits. The process of obtaining these permits can be lengthy and
expensive. In addition, local opposition to a particular project can
substantially increase the cost and time associated with developing a project,
and can potentially render a project unfeasible or uneconomic. The Company may
incur substantial costs or delays or may be unsuccessful in developing clean
power projects as a result of such opposition.

    Operating Risks

      Expected Price Reductions under California SO#4 Contracts. The power-sales
agreements for the Company's Woodland, Mendota, and Delano plants in California
are so-called standard offer #4 (SO#4) contracts, which require Pacific Gas &
Electric (PG&E), in the case of Woodland and Mendota, and Southern California
Edison (SCE), in the case of Delano and Delano II, to purchase the power output
of the projects at fixed rates until 2000 in the case of Woodland and Mendota,
and 2001 in the case of Delano. However, with respect to Woodland and Mendota,
PG&E has asserted that the fixed rates under its agreements will terminate
mid-1999, although the Company disputes this assertion. Thereafter, the utility
will pay a rate based upon the costs that would have otherwise been incurred by
the purchasing utilities in generating their own electricity or in purchasing it
from other sources (avoided cost) (as determined from time to time by the
California Public Utility Commission (CPUC)). Avoided cost is determined
pursuant to a formula that is intended to estimate the price that the utility
would, but for its contract with the power producer, be paying for the same
amount of energy. The rate fluctuates with the price of fuels and certain other
factors. At present, avoided cost is substantially lower than the payments
currently being made by PG&E and SCE to the Company under the fixed rate
portions of its contracts. In addition, although it is difficult to predict
future levels of avoided cost, based on current estimates, avoided cost is
expected to be substantially lower in 2000 than the rates currently being paid
by PG&E and SCE under its fixed rate contracts. The Company expects, that at
current avoided cost rates, absent sufficient reductions in fuel prices and
other operating costs, the Company's Mendota and Delano plants would operate at
substantially reduced operating income levels or at a loss beginning in fiscal
2001. In fiscal 1998, the Mendota and Delano plants' aggregate operating income
was approximately $43.0 million. Further, if the Woodland plant were to operate
at projected avoided cost levels, substantial losses would result primarily due
to nonrecourse lease obligations that extend beyond 2000. Absent sufficient
reductions in fuel prices and other operating costs, under such circumstances
the Company would draw down power reserve funds to cover operating cash
shortfalls and then, should such funds be depleted, either renegotiate its
nonrecourse lease for the Woodland plant or forfeit its interest in the plant.
During the first quarter of fiscal 1997, the Company began recording as an
expense the funding of reserves required under Woodland's nonrecourse lease
agreement to cover projected shortfalls in lease payments beginning in 2000.
Consequently, the results of the Woodland plant were reduced to approximately
breakeven in fiscal 1998. During fiscal 1997 and 1996, the Woodland plant
contributed $1.0 million and $5.1 million of operating income, respectively. If
PG&E ultimately prevails in its assertion that its obligation to pay fixed rates
ends in mid-1999, and if the Company is unsuccessful in renegotiating the terms
of its lease or its power purchase agreement with PG&E, the Company's investment
in its Woodland operating assets could be impaired by approximately $3 to 5
million, based on projected cash flows. This impairment and the operating losses
that would arise in fiscal 1999 if the Woodland facility's operating costs
exceeded its revenues would adversely affect the Company's future results of
operations.

      Potential Decreased Power Sales due to Power Curtailments. The power-sales
agreements between the Woodland and Mendota Operating Companies and PG&E allowed
PG&E to curtail the quantity of power purchased under each of these agreements
by up to 1,000 hours of generating capacity annually at each plant. PG&E
normally exercised its curtailment rights during periods when cheaper
hydroelectric power was available, which generally occurred following periods of
heavy rain or snow. Curtailment reduces the power payment received by the
Operating Companies and, therefore, has an adverse effect on the financial
results of those Operating Companies. In November 1997, the Company renegotiated
PG&E's curtailment rights, limiting PG&E to 500 hours per year effective January
1, 1998. During fiscal 1998, the Company experienced approximately 780 hours of
utility imposed curtailments at each of these plants.

                                       39
<PAGE>


      Potential Increased Fuel Prices and Reduced Availability of Fuel. The
profitability of the Company's plants is dependent in part upon the difference
between the price the Company receives from its utility customers for power and
the price the Company pays for the fuel. The Company has typically entered into
long-term fuel supply agreements for a significant portion of its fuel
requirements. These agreements generally provide for prices based upon
predetermined formulas or indexes. If fuel prices rise significantly, the
Company will be required to pay higher prices on the spot market for the portion
of its fuel not covered by agreements. The Company's existing power sales
agreements do not adjust to account for changes in the Company's fuel prices.
Therefore, the profitability of these agreements, and any future power-sales
agreements that do not provide for such an adjustment, could be materially
adversely affected by increases in the Company's fuel prices. In addition,
future fuel shortages could adversely affect the Company's ability to deliver
power, and therefore receive payments, pursuant to its power-sales agreements.

      Operating Difficulties. The financial performance of each of the Company's
plants depends to a significant extent upon the ability of each plant to be
capable of performing at or near capacity. If a plant is unable to perform at
these levels, payments under the power-sales agreement will be reduced, possibly
significantly. The Company has in the past experienced mechanical problems with
the boilers at its Mendota and Woodland plants and suffered major equipment
damage at its Whitefield plant. Although the Company believes that these
problems have been corrected, no assurance can be given that these or other
plants will not experience operating problems in the future. No assurance can be
given that business interruption insurance will be adequate to cover all
potential losses, or that such insurance will continue to be available on
reasonable terms.

      Dependence on Utility Customers. Each of the current U.S. projects relies
upon one power sales agreement with a single electric utility customer for the
majority, if not all, of its revenues over the life of the power sales
agreement. During fiscal 1998, Public Service of New Hampshire (PSNH), SCE, and
PG&E accounted for 16%, 30%, and 30%, respectively, of the Company's revenues.
The failure of any one utility customer to fulfill its contractual obligations
could have a substantial negative impact on the Company. No assurance can be
given that a particular utility will not be unwilling or unable, at some time,
to make required payments under its power sales agreements. Further, in a
deregulated market, the Company may do business with customers of various sizes
and levels of credit-worthiness.

      Potential Earthquake Damage. The Company's California plants are located
in areas where there is a risk of potentially significant earthquake activity.
Projects that the Company develops in the future may also be located in areas
where there is earthquake risk. The Company's earthquake insurance is not
sufficient to cover all potential losses and there can be no assurance that such
insurance will continue to be available on reasonable terms.

    Regulatory Risks

      Potential Rate Reduction by PSNH. In 1990, a plan of reorganization (the
Plan) for PSNH was approved by the U.S. Bankruptcy Court for the District of New
Hampshire. Pursuant to the Plan, Northeast Utilities (NU) acquired the assets of
PSNH. An agreement between NU and the State of New Hampshire contains language
to the effect that PSNH will seek to renegotiate some of the terms of certain
rate orders with small power producers, including the Whitefield and Hemphill
Operating Companies, and that the state will support PSNH in such efforts. PSNH
reached an agreement in principle with these two Operating Companies to settle
the renegotiation of their rate orders. The settlement agreement is subject to
the approval of the New Hampshire Public Utility Commission (NHPUC) on terms
acceptable to both PSNH and the Operating Companies. The principal terms of the
agreement generally call for the two Operating Companies to reduce the amount of
power sold annually to PSNH to 70% of the plants' capacities, and to reduce the
price per kilowatt paid by PSNH to $0.06 per kilowatt hour, escalating three
percent per year for the remainder of the term of the original, applicable rate
order. In consideration of these reductions, the Operating Companies would
receive certain cash settlement payments, paid over several years. The
settlement agreement has technically expired; however, no party to the
settlement agreement has notified the other that it would not proceed in

                                       40
<PAGE>


accordance with the terms thereof if approved by NHPUC nor was any party
required to do so. The settlement, if approved and executed, is not expected to
have a material impact on the Company's results of operations or financial
condition. Should the matter not reach resolution, the Company does not believe
that PSNH has the right to take unilateral action to reduce the price of
purchased power under such arrangements. Rejection of the Company's rate orders
would result in a claim for damages by the Company and could be the subject of
lengthy litigation. In January 1997, NU disclosed in a filing with the
Securities and Exchange Commission that if a proposed deregulation plan for the
New Hampshire electric utility industry were adopted, PSNH could default on
certain financial obligations and seek bankruptcy protection. In February 1997,
NHPUC voted to adopt a deregulation plan, and in March 1997, PSNH filed suit to
block the plan. In March 1997, the federal district court issued a temporary
restraining order which prohibits the NHPUC from implementing the deregulation
plan as it affects PSNH, pending a determination by the court as to whether
PSNH's claim could then be heard by the court. In April 1997, the court ruled
that it could hear the case and ordered that the restraining order continue
indefinitely pending the outcome of the suit. In addition, in March 1997, the
Company, along with a group of other biomass power producers, filed a motion
with the NHPUC seeking clarification of the NHPUC's proposed deregulation plan
regarding several issues, including purchase requirements and payment of current
rate order prices with respect to the Company's energy output. In May 1998,
NHPUC issued a written ruling rejecting the settlement agreements and
modifications that would impact PSNH's ability to finance and secure the
settlement contract to the Operating Companies. An unfavorable resolution of
this matter, including the bankruptcy of PSNH, could have a material adverse
effect on the Company's results of operations and financial position.

      Potential Effects of Loss of QF Status or Changes to PURPA. The Company's
existing facilities are subject to the provisions of various laws and
regulations, including the Public Utility Regulatory Policies Act of 1978, as
amended (PURPA). PURPA provides to Qualifying Facilities (QFs) certain
exemptions from substantial federal and state legislation, including regulation
as public utilities. PURPA also requires electric utilities to purchase
electricity generated by QFs at prices not exceeding their avoided cost. Any
future changes to PURPA could have a material adverse effect on the Company.

      Public Utility Holding Company Act. The Public Utility Holding Company Act
of 1935 (PUHCA) regulates public utility holding companies and their
subsidiaries. The Company is not and will not be subject to regulation as a
holding company under PUHCA as long as the domestic power plants it owns and/or
operates are QFs under PURPA or otherwise are exempt from regulation as public
utility holding companies under PUHCA. If a power plant were to lose such
status, the Operating Company owning or leasing that plant could become a public
utility company, which could result in the Company becoming a public utility
holding company. In addition, loss of QF status, regardless of the Company's
ability to avoid public utility holding company status, could be a default under
many of the Company's facility lease and power sales agreements. In the event of
any such default, the other parties to such agreements could seek various
remedies against the Company or could seek to renegotiate such agreements on
terms more favorable to such parties. In addition, to ensure that the Company
will not be subject to regulation as a holding company under PUHCA, the foreign
power plants it owns and/or operates also must be exempt from regulation as
public utility companies under PUHCA.

      Potential Increased Competition Due to Regulatory Changes. The Company
believes that certain regulatory changes are likely to have a significant impact
on the domestic power market over the next five years. The National Energy
Policy Act of 1992 exempts a new class of facilities, electric wholesale
generators (EWG), from certain federal utility regulation and liberalizes access
for nonutility generators to the utility power transmission grid. In addition,
many states are considering the elimination of many of the regulations that
currently limit the ability of power generators to negotiate power sales
agreements directly with industrial and commercial customers. The Company
believes that the effect of these regulatory changes will be to increase
competition for the sale of power.

                                       41
<PAGE>

      The Evolving California Electric Utility Market. The electric utility
market in California has undergone a complex restructuring which is not yet
complete. The CPUC and the California legislature have required the creation of
an Independent System Operator (ISO), which operates transmission facilities
owned by investor-owned utilities in the state, and a Power Exchange (PX), which
conducts hourly and daily auctions of electric energy that are designed to set
prices at market levels. The ISO and PX were created in May 1997 and commenced
operations on March 31, 1998. The activities of the ISO and PX are subject to
comprehensive Federal Energy Regulatory Commission (FERC) regulation. FERC has
approved tariffs and rates for the ISO and PX, but these approvals are not
final; they are subject to further FERC and judicial review. In addition, the
restructuring of the California electric utility market may have an effect on
avoided cost. Investor-owned utilities in California are required to buy power
through the PX. The avoided cost for such utilities thus potentially will be
determined based on market prices set through the PX. These market prices may be
lower than energy rates set in current QF contracts which may adversely affect
Operating Companies after the end of the fixed price period in their contracts
with utilities.

      Limitations Imposed by Environmental Regulation. Federal, state, and local
environmental laws govern air emissions and discharges into water and the
generation, transportation, storage, and treatment and disposal of solid and
hazardous waste. These laws establish standards governing most aspects of the
construction and operation of the Company's facilities, and often require
multiple governmental permits before these facilities can be constructed,
modified, or operated. There can be no assurance that all required permits will
be issued for the Company's projects under development or for future projects,
or that the requirements for continued environmental regulatory laws and
policies governing their enforcement may change, requiring new technology or
stricter standards for the control of discharges of air or water pollutants, or
for solid or hazardous waste or ash handling and disposal. Such future
developments could affect the manner in which the Company operates its plants
and could require significant additional expenditures to achieve compliance with
such requirements. It is possible that compliance may not be technically or
economically feasible.

Risks Associated with Clean Fuels Business

      Uncertainty Regarding K-Fuel Facility. The Company has entered into a
limited partnership agreement with KFx Wyoming, Inc., a subsidiary of KFx, Inc.
(the K-Fuel Partnership), to develop, construct, and operate a subbituminous
coal-beneficiation plant near Gillette, Wyoming (the K-Fuel Facility). The plant
utilizes certain patented clean coal technology owned by KFx, Inc. and licensed
to the K-Fuel Partnership on a non-exclusive basis (the K-Fuel technology) which
transforms low energy, high moisture coal into low-moisture, high-energy fuel
with reduced sulfur. The Company believes that the K-Fuel Facility qualifies for
a federal tax credit available with respect to qualifying alternative fuels from
a facility placed in service before June 30, 1998, pursuant to a binding written
contract in effect before December 31, 1996. The credit is thereafter available
with respect to qualified fuel sold through December 31, 2007. Although the
facility has operated and produced commercially salable product, the Company has
encountered certain difficulties in optimizing its performance to achieve
optimal and sustained operation. The Company has addressed and resolved certain
problems previously encountered, including a fire at the facility and certain
construction problems, including issues relating to the flow of materials within
the facility and the design and operation of certain pressure-release equipment.
The Company continues to experience certain operational problems relating to tar
and fines residue build-up within the system during production and other product
quality issues related to product dusting. The Company is actively exploring
solutions to these problems. Because the technology being developed at the
facility is new and untested, no assurance can be given that other difficulties
will not arise or that the Company will be able to correct these problems and
achieve optimal and sustained performance. In addition, there can be no
assurance that the Company will be able to realize a benefit from the tax
credit. The economic returns of the K-Fuel Facility primarily result from tax
credits on the facility's production of K-Fuel. The K-Fuel Facility reports
operating losses for financial reporting purposes primarily as a result of
recording depreciation over the expected life of this tax credit. Further, the
Company currently has an agreement for the sale of only 33% of the plant's

                                       42
<PAGE>

anticipated output for the first three years of operation and, at the
purchaser's option, the plant's entire output from the fourth through the tenth
year of operation. No assurance can be given that the purchaser of the fuel will
exercise its option in years four through ten or that the Company will be able
to enter into additional contracts for the sale of fuel on acceptable terms, or
at all. Demand for the fuel produced by the plant is expected to result in large
part from the requirement that coal-burning utilities comply with the future
scheduled sulfur dioxide emissions restrictions contained in the Clean Air Act.
If the fuel produced by the plant does not allow the achievement of desired
emissions reductions, or if regulations relating to emissions become less
restrictive in the future, demand for the plant's fuel output would be
materially adversely affected.

      Federal Regulation of Air Emissions. A significant factor driving the
creation of the U.S. market for K-Fuel and other beneficiated coal products is
the Clean Air Act. The Clean Air Act specifies certain air emission requirements
for electrical utility companies and industrial coal users. The Company believes
that compliance with such regulations by these coal users can be fully or
partially met through the use of clean-burning fuel technologies like the one
being employed at the Company's K-Fuel Facility. The Company is unable to
predict future regulatory changes and their impact on the demand for K-Fuel. A
full or partial repeal or revision of the Clean Air Act would have a material
adverse effect on the Company's clean fuel business.

      Operating Hazards and Uninsured Risks. The Company's K-Fuel Facility is
subject to the risks inherent in the operation of high pressure, high
temperature equipment producing combustible fuels. These risks include the
possibility of fire, explosions, pollution, and other environmental risks. These
risks could result in substantial losses to the Company's K-Fuel Facility and
revenues due to injury and loss of life; severe damage to, and destruction of,
property and equipment; pollution; and other environmental damage and suspension
of operations. The K-Fuel Facility maintains insurance of various types to cover
its operations. No assurance can be given that the Company will be able to
maintain adequate insurance in the future at rates the Company considers
reasonable. The occurrence of a significant event not fully insured or
indemnified against could materially and adversely affect the Company's
financial condition and results of operations.

      Electric Utility Regulatory Changes. The U.S. electric utility market is
currently in the early stage of deregulation. The National Energy Policy Act of
1992 exempts a new class of facilities, EWG's, from certain federal utility
regulation and liberalizes access for nonutility generators to the utility power
transmission grid. In addition, the Federal government and many states are
considering the elimination of many regulations that currently limit the ability
of power generators to negotiate power sales agreements directly with industrial
and commercial customers. The Company believes that these regulatory changes
will result in utilities and other power generators placing a high emphasis on
reducing costs in their operations. This may result in increased competition
from other producers of beneficiated coal products or other fuel sources to the
extent that such competing fuels result in cost savings for utilities and other
power producers which will have a material adverse effect on the price the
Company can charge for K-Fuel and thus have a material adverse effect on the
Company's results of operations.

      No Established Market for Beneficiated Fuel Products. Although the Company
believes that a substantial market will develop for clean coal fuel products, an
established market does not currently exist. As a result the availability of
accurate and reliable pricing information and transportation alternatives are
not fully known. The future success of the Company's K-Fuel business will be
determined by its ability to establish such a market among potential customers
such as electrical utility companies and industrial coal users. Many potential
users of the Company's products will be able to choose among alternative fuel
supplies.

      Competition. The Company will face competition from other companies in the
clean coal and alternative fuel technology industries. Some of these companies
have financial and managerial resources greater than those of the Company, and
therefore may be able to offer products more competitively priced and more
widely available than those of the Company. Also, such competitors' products may
make the Company's products obsolete or non-competitive.

                                       43
<PAGE>

Furthermore, the Company's license to the K-Fuel technology at the K-Fuel
Facility is nonexclusive and KFx may seek additional partners to develop other
facilities using the K-Fuel technology. In addition, demand for the Company's
K-Fuel could be adversely affected by potential customers' ability to purchase
emissions offsets as allowed under the November 1990 amendments to the Clean Air
Act (the 1990 Amendments).

      Natural Gas Business Operating Risks. The Company's proposed natural gas
business is subject to all of the operating risks normally associated with the
processing, transporting, and storage of natural gas, including blowouts,
pollution, and fires, each of which could result in damage to or destruction of
processing and storage facilities or properties, or in personal injury. The
Company intends to obtain insurance coverage limiting financial loss resulting
from certain of these operating hazards. Losses and liabilities arising from
uninsured or underinsured events could reduce revenues and increase costs to the
Company and could materially adversely affect the Company's financial condition
and results of operations.

      Volatility of Natural Gas Prices. Historically, the market for natural gas
has been volatile and is likely to continue to be volatile in the future. Prices
for natural gas are subject to wide fluctuation in response to relatively minor
changes in the supply of and demand for natural gas and oil, market uncertainty
and other factors over which the Company has no control. These factors include
the extent of domestic production and importation of foreign natural gas and/or
oil, political instability in oil and gas producing countries and regions, the
ability of members of the Organization of Petroleum Exporting Countries to agree
upon price and production levels for oil, the effect of federal regulation on
the sale of natural gas and/or oil in interstate commerce, and other
governmental regulation of the production and transportation of natural gas
and/or oil. Certain other factors outside the Company's control, such as
operational and transportation difficulties of pipeline or oil purchasing
companies, may also limit sales. In addition, the price level of natural gas
obtainable by the Company depends upon the needs of the purchasers to which the
producer has access. Depending on the purchasers' needs and the price obtainable
for natural gas which the Company is able to sell, the revenues of the Company
from its proposed natural gas business could be materially adversely affected.

Risks Associated with the Biopesticides Business

      Need for Regulatory Approval for Future Products. The Company's Thermo
Trilogy subsidiary's biopesticide products cannot be sold unless the U.S.
Environmental Protection Agency (the EPA) grants Thermo Trilogy a registration
for each pesticide product it intends to manufacture or sell. Thermo Trilogy
must submit extensive toxicological studies and results of field testing as well
as other studies to the EPA to apply for a product registration. Pesticide
registrations under state laws and regulations must also be obtained. In
addition, pesticide registrations must be obtained from foreign governments
before Thermo Trilogy's products can be sold in a particular country, and these
countries may also require costly and extensive studies to support the
registration applications some of which may be more stringent then current U.S.
regulations. Registration of Thermo Trilogy's new products likely will be
lengthy and expensive. There is no assurance that the EPA, states, or foreign
governments will timely grant pesticide registrations to Thermo Trilogy, or at
all. Pesticide registrations may also be revoked if new regulations are adopted
or if Thermo Trilogy violates regulations regarding the manufacturing, sale, or
labeling of Thermo Trilogy's products. Such regulation applies to all stages of
field testing and to the manufacture, sale, and use of most of Thermo Trilogy's
products. There can be no assurance that Thermo Trilogy will continue to be able
to comply with EPA regulations or any changes thereto. The regulatory process or
private litigation contesting products of Thermo Trilogy may be costly and
time-consuming and may delay research, development, production, and/or marketing
of such products and require costly and time-consuming procedures, all of which
may furnish an advantage to competitors. There can be no assurance that
requisite regulatory approvals and/or registrations of any or all of Thermo
Trilogy's products will be granted on a timely basis, if at all. In addition,
new or more stringent regulations may be adopted or imposed, which could have a
material adverse effect on Thermo Trilogy's business, financial condition, and
results of operations.

                                       44
<PAGE>


      Uncertainty of Market Acceptance and Penetration. Thermo Trilogy's sales
growth is dependent on the penetration of its products into new markets. The
primary competition to Thermo Trilogy's products are chemical pesticides, and
Thermo Trilogy must educate customers on the cost effectiveness and efficacy and
minimal environmental effects of Thermo Trilogy's products compared to chemical
pesticides in order to gain acceptance for application on new crop types in
different parts of the world. In addition, the rate of acceptance of Thermo
Trilogy's products in the U.S. will be substantially affected by ongoing EPA
review and registration of the use of currently available chemical insecticides
and biopesticides and the extent to which the EPA restricts or bans chemical
pesticides for which Thermo Trilogy has biopesticide alternatives. No assurance
can be given that Thermo Trilogy's products will gain increased acceptance in
new market segments.

      Highly Competitive Markets and Technological Change. Most of the markets
in which Thermo Trilogy operates are highly competitive and are subject to rapid
technological change. Several of Thermo Trilogy's products are in testing or
early marketing stages. Many of Thermo Trilogy's competitors are large chemical
and pharmaceutical companies with greater financial, marketing, and
technological resources than Thermo Trilogy. There is no assurance that
competitors will not develop new products that will render Thermo Trilogy's
products noncompetitive. The development of transgenic plants and seeds, which
are genetically engineered seeds or plants designed to improve resistance to
insects or disease or to improve product quality, may pose a competitive threat
to Thermo Trilogy's products in the future.

      Reliance on Third-party Manufacturers and Producers. Thermo Trilogy relies
on overseas producers of the raw materials for its neem-based products and on
third parties to manufacture some of its products. In particular, Thermo
Trilogy's sole supplier of neem products is P.J. Margo Pvt. Ltd., a joint
venture in India in which Thermo Trilogy holds a 50% interest, pursuant to an
exclusive supply contract that expires in 2001. There is no assurance that
Thermo Trilogy will have an uninterrupted supply of raw materials or that
third-party manufacturers will produce the products at competitive prices.

      Uncertainty of Product Development and Commercialization. Thermo Trilogy's
products are at various stages of development and commercialization. The ability
of Thermo Trilogy to sell its products in large commercial markets will be
dependent upon continued product development to allow increased efficiency and
reduced costs in production. There can be no assurance that increased efficiency
and reduced costs of production can be achieved. Thermo Trilogy cannot
accurately predict whether any of its products under development can be produced
and marketed profitably.

      Seasonality of Product Sales. Thermo Trilogy currently markets its
products predominantly for use in the northern hemisphere, where the growing
season generally runs from March to October; therefore, the seasonal nature of
agriculture will cause Thermo Trilogy's product sales to be concentrated during
such period and will result in substantial variations in quarter-to-quarter
financial results.

      Perishability of Products. Certain of Thermo Trilogy's microbial products
are living organisms and thus have a limited shelf-life, may biodegrade quickly
when exposed to light and heat and are perishable. In addition, such products
may be perishable when exposed to hostile environments including severe or
changing weather patterns particularly during shipping and storage. Failure of
these products as a result of perishability could have a material adverse effect
on the business of the Company.

      Testing. Commercial introduction of additional products and the expansion
of label claims for current products to include additional insects are both
contingent upon, among other factors, completion of field testing. Unusual
weather conditions during field tests prior to the growing season or other tests
in subsequent growing seasons could result in delays in product development and
commercialization. Such delays could result in additional losses due to
increased operating expenses in the intervening period without significant
offsetting revenues.


                                       45
<PAGE>

      Product and Warranty Liability. Thermo Trilogy faces an inherent business
risk of exposure to product liability and warranty claims in the event that the
use of its current products or prospective products lack efficacy or result in
adverse effects. Further, product liability claims could result in Company
exposure for crop damage or personal injury. Run-off excess concentrations of
pesticide products could also expose Thermo Trilogy to claims and liabilities
for water pollution, including governmental fines and penalties. There can be no
assurance that the scope of Thermo Trilogy's insurance coverage is sufficient,
that it can obtain additional coverage, or that Thermo Trilogy will have
sufficient resources to satisfy any product liability and warranty claims.

Other Risks

      Significant Quarterly Fluctuations in Operating Results. The Company's
operating results fluctuate significantly from quarter to quarter based on a
number of factors, primarily seasonal energy demand in California, which results
in higher payments under the Company's California power-sales agreements in the
months of May through October, and lower payments during the remainder of the
year, and seasonal demand for its biopesticide products. The Company
historically has operated at marginal profitability during its second fiscal
quarter due to the rate structure under these agreements. In addition, the
Company's operating results can be affected by utility imposed curtailments or
by any operating problems that cause a plant to operate at less than normal
capacity, and with respect to its biopesticides business, by agricultural
conditions such as pest infestation, amount of rain, and other adverse weather
conditions, the occurrence of natural resistance factors, and the increase or
decrease in agricultural plantings and produce prices.

      Limitation on Access to Operating Company Assets and Cash Flow. The
Company's clean power resources operations are conducted through the Operating
Companies, and the Company's cash flow is contingent on the ability of the
Operating Companies to make dividends or other distributions to the Company. The
terms of certain leases and financial agreements to which the Operating
Companies are parties require that certain funds be held in trust and restricted
from distribution to the Company. As of October 3, 1998, the Company and its
subsidiaries had funds totaling $92.1 million of which approximately $62.7
million was restricted from distribution by the terms of certain Operating
Companies' lease and financing agreements. In addition, until such time, if
ever, as projections of avoided cost change, all cash flows from the Woodland
operations, other than cash required for tax distributions, will be restricted
from distribution to the Company. The inability of the Company to receive
distributions from the Operating Companies could have a material adverse effect
on the future growth of the Company. Furthermore, Thermo Trilogy is a
majority-owned subsidiary of the Company, therefore all Thermo Trilogy cash
dividends, if any, must be distributed on a pro rata basis to all shareholders
of Thermo Trilogy, including the minority shareholders.

      Dependence on Proprietary Technology. Proprietary rights relating to the
Company's products will be protected from unauthorized use by third parties only
to the extent that they are covered by valid and enforceable patents or are
maintained in confidence as trade secrets. The Company has a number of U.S.
patents and also owns corresponding foreign patents in a number of jurisdictions
throughout the world. There can be no assurance that any patents now or
hereafter owned by the Company will afford protection against competitors.
Proceedings initiated by the Company to protect its proprietary rights could
result in substantial costs to the Company. There can be no assurance that
competitors of the Company, some of whom have substantially greater resources
than those of the Company, will not initiate litigation to challenge the
validity of the Company's patents, or that they will not use their resources to
design comparable products that do not infringe the Company's patents. The
Company could incur substantial costs and diversion of management resources with
respect to the defense of any such claims, which could have a material adverse
effect on the Company's business, financial condition, and results of operation.
Furthermore, parties making such claims could secure a judgment awarding
substantial damages, as well as injunctive or other equitable relief, which
could effectively block the Company's ability to make, use, sell, distribute, or
market its products and services in the U.S. and abroad. There may also be
pending or issued patents held by parties not affiliated with the Company that
relate to the Company's products or technologies. In the event that a claim
relating to proprietary technology or information is asserted against the
Company, the Company may need to acquire licenses to, or contest the validity
of,


                                       46
<PAGE>

any such competitor's proprietary technology. It is likely that significant
funds would be required to contest the validity of any such competitor's
proprietary technology. There can be no assurance that any license required
under any such competitor's proprietary technology would be made available on
acceptable terms or that the Company would prevail in any such contest. There
can be no assurance that the steps taken by the Company to protect its
proprietary rights will be adequate to prevent misappropriation of its
technology or independent development by others of similar technology. In
addition, the laws of some jurisdictions do not protect the Company's
proprietary rights to the same extent as the laws of the U.S. There can be no
assurance that these protections will be adequate.
      The Company relies on trade secrets and proprietary know-how which it
seeks to protect, in part, by confidentiality agreements with its collaborators,
employees, and consultants. There can be no assurance that these agreements will
not be breached, that the Company would have adequate remedies for any breach or
that the Company's trade secrets will not otherwise become known or be
independently developed by competitors.

      Potential Impact of Year 2000 on Processing Date-sensitive Information.
While the Company is attempting to minimize any negative consequences arising
from the year 2000 issue, there can be no assurance that year 2000 problems will
not have a material adverse impact on the Company's business, operations, or
financial condition. While the Company expects that upgrades to its internal
business systems will be completed in a timely fashion, there can be no
assurance that the Company will not encounter unexpected costs or delays. If any
of the Company's material suppliers, vendors, or customers experience business
disruptions due to year 2000 issues, the Company might also be materially
adversely affected. The Company's research and development, production,
distribution, financial, administrative, and communications operations might be
disrupted. There is expected to be a significant amount of litigation relating
to the year 2000 issue and there can be no assurance that the Company will not
incur material costs in defending or bringing lawsuits. Any unexpected costs or
delays arising from the year 2000 issue could have a significant adverse impact
on the Company's business, operations, and financial condition.

      Risks Associated With International Operations. International sales
accounted for 7% of the Company's total revenues in fiscal 1998. Over the next
several years, the Company intends to continue to significantly expand its
presence in international markets. International revenues are subject to a
number of risks, including the following: agreements may be difficult to enforce
and receivables difficult to collect through a foreign country's legal system;
foreign customers may have longer payment cycles; foreign countries may impose
additional withholding taxes or otherwise tax the Company's foreign income,
impose tariffs, or adopt other restrictions on foreign trade; fluctuations in
exchange rates may affect product demand and adversely affect the profitability
in U.S. dollars of products and services provided by the Company in foreign
markets where payment for the Company's products and services is made in the
local currency; U.S. export licenses may be difficult to obtain; and the
protection of intellectual property in foreign countries may be more difficult
to enforce. There can be no assurance that any of these factors will not have a
material adverse impact on the Company's business and results of operations.

                                       47
<PAGE>


Thermo Ecotek Corporation                              1998 Financial Statements

                                      Selected Financial Information
<TABLE>
<CAPTION>
                                                                                          Nine
                                                                                         Months     Year
                                                           Year Ended                    Ended      Ended
                                            ------------------------------------------ --------   ---------
<S>                                         <C>        <C>       <C>        <C>        <C>        <C>
(In thousands except per share amounts)       Oct. 3,  Sept. 27, Sept. 28,  Sept. 30,  Sept. 30,   Dec. 31,
                                             1998 (a)   1997 (b)  1996 (c)       1995   1995 (d)       1994
- ------------------------------------------- ---------- --------- ---------- ---------- ---------- ----------
                                                                          (Unaudited)
Statement of Income Data
Revenues                                    $ 208,971  $180,191  $ 150,076  $ 139,319  $ 107,139  $ 134,261
Net Income                                     31,209    22,545     17,780     12,540     10,264      9,651
Earnings per Share:
  Basic                                          1.07       .92        .76        .58        .46        .49
  Diluted                                         .86       .64        .54        .43        .34        .37
Weighted Average Shares:
  Basic                                        29,299    24,613     23,528     21,796     22,477     19,824
  Diluted                                      39,152    38,740     36,292     33,014     33,815     30,934


Balance Sheet Data
Working Capital                             $  83,589  $ 90,714  $  76,217             $  58,361  $  28,418
Total Assets                                  505,111   485,305    449,145               390,476    285,970
Long-term Obligations                          93,446   204,690    209,281               202,360    163,800
Shareholders' Investment                      249,632   147,276    129,687                92,985     55,146
</TABLE>
                                                       

(a) Reflects the November 1997 acquisition of the Bt business of Novartis, a
    nontaxable gain of $6.3 million from the issuance of stock by a subsidiary,
    and the conversion by Thermo Electron of $68.5 million principal amount of
    4% subordinated convertible debentures.
(b) Reflects the January 1997 acquisition of the business of biosys, inc. and
    the April 1997 issuance of $50.0 million principal amount of 4.875%
    subordinated convertible debentures.
(c) Reflects the March 1996 issuance of $37.0 million principal amount of
    noninterest-bearing subordinated convertible debentures and the May 1996
    acquisition of the biopesticides division of W.R. Grace & Co.
(d) In June 1995, the Company changed its fiscal year end from the Saturday
    nearest December 31 to the Saturday nearest September 30. Accordingly, the
    Company's 39-week transition period ended September 30, 1995, is presented.



                                       48
<PAGE>

Thermo Ecotek Corporation                          1998 Financial Statements
Common Stock Market Information
      The Company's common stock is traded on the American Stock Exchange under
the symbol TCK. The following table sets forth the high and low sale prices of
the Company's common stock for fiscal 1998 and 1997, as reported in the
consolidated transaction reporting system.
<TABLE>
<CAPTION>

                                                                         1998                  1997
                                                                --------------------  ----------------------
<S>                                                               <C>         <C>       <C>       <C>   
Quarter                                                              High        Low       High         Low
- --------------------------------------------------------------- ---------- ---------- ---------- -----------

First                                                              $18 1/2    $13        $16 1/4   $14 1/2
                                                                                  
Second                                                              19 3/4     16 3/4     15 3/4    14 1/8
                                                                               
Third                                                               19 3/4     15 5/8     16        11 3/8
                                                                        
Fourth                                                              16 7/8     14 1/8     15 1/2    13 1/4
                                                                                
</TABLE>

      As of October 30, 1998, the Company had 666 holders of record of its
common stock. This does not include holdings in street or nominee names. The
closing market price on the American Stock Exchange for the Company's common
stock on October 30, 1998, was $12 7/16 per share.

Stock Transfer Agent
      American Stock Transfer & Trust Company is the stock transfer agent and
maintains shareholder activity records. The agent will respond to questions on
issuance of stock certificates, change of ownership, lost stock certificates,
and change of address. For these and similar matters, please direct inquiries
to:

      American Stock Transfer & Trust Company
      Shareholder Services Department
      40 Wall Street, 46th Floor
      New York, New York 10005
      (718) 921-8200

Shareholder Services
      Shareholders of Thermo Ecotek Corporation who desire information about the
Company are invited to contact the Investor Relations Department, Thermo Ecotek
Corporation, 81 Wyman Street, P.O. Box 9046, Waltham, Massachusetts 02454-9046,
(781) 622-1111. A mailing list is maintained to enable shareholders whose stock
is held in street name, and other interested individuals, to receive quarterly
reports, annual reports, and press releases as quickly as possible. Quarterly
distributions of printed reports are limited to the second quarter report only.
All quarterly reports and press releases are available through the Internet from
Thermo Electron's home page (http://www.thermo.com/subsid/tck1.html).

Dividend Policy
      The Company has never paid cash dividends because its policy has been to
use earnings to finance expansion and growth. Payment of dividends will rest
within the discretion of the Board of Directors and will depend upon, among
other factors, the Company's earnings, capital requirements, and financial
condition. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations" for a discussion of certain restrictions applicable to
the use of certain funds.

Form 10-K Report
      A copy of the Annual Report on Form 10-K for the year ended October 3,
1998, as filed with the Securities and Exchange Commission, may be obtained
without charge by writing to the Investor Relations Department, Thermo Ecotek
Corporation, 81 Wyman Street, P.O. Box 9046, Waltham, Massachusetts 02454-9046.

Annual Meeting
      The annual meeting of shareholders will be held on Wednesday, March 10,
1999, at Thermo Electron Corporation, 81 Wyman Street, Waltham, Massachusetts.


                       THERMO ECOTEK CORPORATION SUBSIDIARIES        Exhibit 21

  As of November 19, 1998, the Registrant owned the following subsidiaries:

<TABLE>
<CAPTION>
   <S>                                                                    <C>               <C> 
                                                                             STATE OR
                                                                           JURISDICTION      PERCENT OF
                       NAME                                                     OF           OWNERSHIP
                                                                           INCORPORATION
    -------------------------------------------------------                -------------     ----------
    Thermo Ecotek Corporation                                               Delaware               93**
        Central Valley Fuels Management Inc.                                Delaware              100
        Delano Energy Company Inc.                                          Delaware              100
        Eco Fuels Inc.                                                      Wyoming               100
        Independent Power Services Corporation                              Nevada                100
        KFP Operating Company, Inc.                                         Delaware              100
        Mountainview Power Company                                          Delaware              100
        Riverside Canal Power Company                                       California            100
        SFS Corporation                                                     New Hampshire         100
        TCK Fuels Inc.                                                      Delaware              100
           KFx Fuel Partners, L.P.                                          Delaware               95*
           (2% of which is owned directly by Eco Fuels Inc.)
        TES Securities Corporation                                          Delaware              100
        Thermendota, Inc.                                                   California            100
           Mendota Biomass Power, Ltd.                                      California            100
               MBPL Agriwaste Corporation                                   California            100
        Thermo Ecotek International Holdings Inc.                           Cayman Islands        100
           Thermo Ecotek Europe Holdings B.V.                               Netherlands           100
               EMD Ventures B.V.                                            Netherlands            65*
                  ECS sro                                                   Czech Republic         50*
                  EMD Pribram sro                                           Czech Republic         50*
               EuroEnergy Group B.V.                                        Netherlands            50*
           Thermo EuroVentures sro                                          Czech Republic        100
        Thermo Ecotek International Inc.                                    Cayman Islands        100
           TCK Cogeneration Dominicana Inc.                                 Cayman Islands        100
           (1% of which shares are owned directly by Thermo Ecotek 
            International Holdings Inc.)
           TCK Dominicana Holdings Inc.                                     Cayman Islands        100
           (1% of which shares are owned directly by
           Thermo Ecotek International Holdings Inc.)
        Thermo Electron of Maine, Inc.                                      Maine                 100
           Gorbell/Thermo Electron Power Company                            Maine                  60*
        Thermo Electron of New Hampshire, Inc.                              New Hampshire         100
           Hemphill Power and Light Company                                 New Hampshire          66*
        Thermo Electron of Whitefield, Inc.                                 New Hampshire         100
           Whitefield Power and Light Company                               New Hampshire         100*
           (39% of which is owned directly by SFS Corporation)
        Star Natural Gas Company                                            Delaware               95
        Thermo Fuels Company, Inc.                                          California            100
        Thermo Trilogy Corporation                                          Delaware               87**
           Thermo Trilogy International Holdings, Inc.                      Cayman Islands        100
               AgriSense-BCS, Ltd.                                          United Kingdom        100
               P J Margo Pvt. Ltd.                                          India                  50*
        Ulna Incorporated                                                   California            100
        Woodland Biomass Power, Inc.                                        California            100
           Woodland Biomass Power, Ltd.                                     California            100*
           (.1% of which is owned directly by Thermo Ecotek Corporation)
</TABLE>


                                                                      Exhibit 23

                 Consent of Independent Public Accountants
    As independent public accountants, we hereby consent to the
incorporation by reference of our reports dated November 9, 1998 (except
with respect to the matter discussed in Note 17, as to which the date is
November 24, 1998), included in or incorporated by reference into Thermo
Ecotek Corporation's Form 10-K for the fiscal year ended October 3, 1998,
into the Company's previously filed Registration Statement on Form S-8
(No. 33-91538), Registration Statement on Form S-8 (No. 33-91542),
Registration Statement on Form S-8 (No. 33-91546), Registration Statement
on Form S-8 (No. 33-91544), Registration Statement on Form S-8 (No.
33-91548), and Registration Statement on Form S-8 (No. 33-80753).



                                               Arthur Andersen LLP



Boston, Massachusetts
December 10, 1998


<TABLE> <S> <C>

<ARTICLE>      5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
ECOTEK CORPORATION'S REPORT ON FORM 10-K FOR THE YEAR ENDED OCTOBER 3, 1998 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>   1,000
       
<S>                     <C>
<PERIOD-TYPE>                    YEAR
<FISCAL-YEAR-END>                OCT-03-1998
<PERIOD-END>                     OCT-03-1998
<CASH>                                41,371
<SECURITIES>                               0
<RECEIVABLES>                         45,792
<ALLOWANCES>                               0
<INVENTORY>                           23,640
<CURRENT-ASSETS>                     149,398
<PP&E>                               389,553
<DEPRECIATION>                        87,623
<TOTAL-ASSETS>                       505,111
<CURRENT-LIABILITIES>                 65,809
<BONDS>                               93,446
                      0
                                0
<COMMON>                               3,782
<OTHER-SE>                           245,850
<TOTAL-LIABILITY-AND-EQUITY>         505,111
<SALES>                              208,971
<TOTAL-REVENUES>                     208,971
<CGS>                                135,506
<TOTAL-COSTS>                        135,506
<OTHER-EXPENSES>                       2,398
<LOSS-PROVISION>                           0
<INTEREST-EXPENSE>                    11,040
<INCOME-PRETAX>                       48,592
<INCOME-TAX>                          15,702
<INCOME-CONTINUING>                   31,209
<DISCONTINUED>                             0
<EXTRAORDINARY>                            0
<CHANGES>                                  0
<NET-INCOME>                          31,209
<EPS-PRIMARY>                           1.07
<EPS-DILUTED>                           0.86
        

</TABLE>


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