CONSTELLATION ENERGY GROUP INC
POS AM, 1999-03-25
ELECTRIC SERVICES
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                                                    Registration Nos. 333-59601
                                                                       33-57658
================================================================================





                       SECURITIES AND EXCHANGE COMMISSION


                       __________________________________



                         POST-EFFECTIVE AMENDMENT NO. 1

                                       TO

                                    FORM S-3

                             REGISTRATION STATEMENTS

                        UNDER THE SECURITIES ACT OF 1933


                      ____________________________________


                        Constellation Energy Group, Inc.
             (Exact Name of Registrant as Specified in its Charter)


                                    Maryland
                            (State of Incorporation)


                                   52-1964611
                      (I.R.S. Employer Identification No.)


                         David A. Brune, Vice President
                39 W. Lexington Street, Baltimore, Maryland 21201
                                 (410) 234-5511
     (Address, including Zip Code, and Telephone Number, including Area Code
       of Registrant's Principal Executive Offices and Agent for Service)

               
          
         Pursuant  to  Rule  429  under  the  Securities  Act  of  1933,   this
 Registration  Statement also  serves as  a  post-effective  amendment  to  the
 Registrant's  Registration Statements on Form S-3 (Registration Nos. 33-57658 
 and 333-59601).


================================================================================
<PAGE>

                                EXPLANATORY NOTE

     This Post-Effective Amendment No. 1 relates to the issuance of shares of
common stock, no par value, of Constellation Energy Group, Inc. which were
originally registered by Baltimore Gas and Electric Company on Form S-3.  
Constellation Energy Group, Inc. will succeed Baltimore Gas and Electric Company
as registrant of various effective registration statements filed with the
Securities and Exchange Commission.  The registration fee in respect of the
common stock was paid at the time of the original filing of the Registration 
Statements on Form S-3 by Baltimore Gas and Electric Company.


<PAGE>




The information in this prospectus is not complete and may be changed.  We may
not sell these securities until the registration statement filed with the  
Securities and Exchange commission is effective.  This prospectus is not an
offer to sell these securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.



                  Subject to completion dated March 25, 1999
   


[GRAPHIC OMITTED]


3,731,600 Shares
Common Stock

                                                Constellation Energy Group, Inc.
                                                          39 W. Lexington Street
                                                      Baltimore, Maryland  21201
                                                                  (410) 234-5000

________________________________________________________________________________
                             
                              P R O S P E C T U S
________________________________________________________________________________

     Constellation  Energy  may sell  shares of common  stock  from time to time
through the agent under our continuous offering program. We will receive all the
proceeds  from the sale of the stock,  less  expenses,  after paying the agent a
commission  of not more than 5 cents per share.  The  proceeds  we receive  will
depend on the number of shares we sell and the market  price of our stock at the
time of sale. We also may sell shares of common stock in fixed price  offerings,
special  offerings  or block  transactions.  For these  types of sales,  we will
prepare and distribute a prospectus supplement which will describe the sale. Our
common  stock is listed on the New York,  Chicago  and Pacific  stock  exchanges
under the symbol "CEG." 

                                ----------------
    

     We urge you to  carefully  read this  prospectus  which will  describe  the
specific terms of the offering before you make your investment decision.


     Neither the  Securities and Exchange  Commission  nor any state  securities
commission has approved or  disapproved  of these  securities or passed upon the
adequacy or accuracy of this prospectus. Any representation to the contrary is a
criminal offense.



                              SALOMON SMITH BARNEY


                                    - Agent -

______________________________, 1999




<PAGE>

                                TABLE OF CONTENTS

   

                                                                            Page

Constellation Energy...................................................       3
Use of Proceeds........................................................       3
Common Stock Dividends and Price Range.................................       4
Description of Common Stock............................................       5
Plan of Distribution...................................................       5
Legal Opinions.........................................................       6
Experts..................................................... ..........       6
Where You Can Find More Information.......................... ..........      6



                           FORWARD-LOOKING STATEMENTS

     We make  statements in this  prospectus and the documents we incorporate by
reference that are considered  forward-looking  statements within the meaning of
the Securities Act of 1933 and the  Securities  Exchange Act of 1934.  Sometimes
these  statements will contain words such as "believes,"  "expects,"  "intends,"
"plans" and other similar  words.  These  statements  are not  guarantees of our
future  performance and are subject to risks,  uncertainties and other important
factors that could cause our actual performance or achievements to be materially
different from those we project. These risks, uncertainties and factors include:

- -  general economic, business and regulatory conditions;
- -  energy supply and demand;
- -  competition;
- -  federal and state regulations;
- -  availability, terms and use of capital;
- -  nuclear and environmental issues;
- -  weather;
- -  industry restructuring and cost recovery (including the potential effect of 
   stranded investments).
- -  commodity price risk, and
- -  year 2000 readiness

Given  these  uncertainties,  you  should  not  place  undue  reliance  on these
forward-looking statements. Please see the documents we incorporate by reference
for  more  information  on  these  factors.  These  forward-looking   statements
represent our estimates and assumptions only as of the date of this prospectus.

    
 
                                      2
<PAGE>

   

CONSTELLATION ENERGY

Constellation  Energy became the holding  company for Baltimore Gas and Electric
Company  ("BGE")  on  __________,   1999.  Constellation  Energy  owns  all  the
outstanding shares of common stock of BGE and the subsidiaries formerly owned by
BGE.

BGE is a public utility that has served Central Maryland for over 180 years. BGE
produces,  purchases and sells  electricity and purchases,  transports and sells
natural gas. BGE also jointly owns and operates two electric  generating  plants
and one hydroelectric plant in Pennsylvania.

Constellation Energy owns the stock of several other companies primarily engaged
in diversified energy-services businesses. They are:

- -  Constellation Power Source, Inc. - our wholesale power marketing and trading
   business.

- -  Constellation Power, Inc. and subsidiaries - our power projects business;

- -  Constellation Energy Source, Inc. - our energy products and services
   business; and

- -  BGE Home Products & Services,  Inc. and subsidiaries - our home products,
   commercial  building  systems,  and residential and small  commercial gas 
   retail marketing business.

Constellation Energy also has two other subsidiaries:

- -  Constellation Investments, Inc. - our financial investments business; and

- -  Constellation Real Estate Group, Inc. - our real estate and senior living
   facilities business.

    


USE OF PROCEEDS

   

Based on our current plans and estimates, we  will use the net proceeds from the
sale of common stock for general corporate  purposes,  including  investments in
our  subsidiaries  and repayment of commercial paper  borrowings used to finance
capital  expenditures and operations.  We may, however, use the net proceeds for
other  purposes  if we find  it  necessary.  If we do not  use the net  proceeds
immediately,  we will  temporarily  invest them in short term,  interest bearing
obligations.  For current  information  on our  commercial  paper  balances  and
average interest rate, see our most recent Form 10-K and 10-Q. See Where You Can
Find More Information.
                                       3
    

<PAGE>



                     COMMON STOCK DIVIDENDS AND PRICE RANGE

   

When our Board of Directors  declares  dividends they will also  set  the record
dates and payment dates. As was the practice  with  BGE  the  record  dates  are
expected to be the 10th of March, June, September and December, and we expect to
mail dividends to each shareholder on or  about the 1st of  January, April, July
and October.

The range of the high and low sale prices of BGE's common stock, reported by The
Wall Street  Journal,  as  New  York Stock Exchange-Composite  Transactions  and
dividends paid per share were as follows:

<TABLE>
<CAPTION>


                                                                 
                                        Price Range               Dividends Paid
                               -------------------------------          Per
                                    High              Low              Share
                               ----------------    -------------   -------------
<S>                               <C>               <C>               <C>

1996                                                                      
First Quarter...................   29 1/2            26 1/8            .39
Second Quarter..................   28 5/8            25 1/2            .39
Third Quarter...................   28 5/8            25                .40
Fourth Quarter..................   28 3/4            25 3/4            .40

1997
First Quarter...................   28                26 1/2            .40
Second Quarter..................   27                24 3/4            .40
Third Quarter ..................   28 1/16           26                .41
Fourth Quarter .................   34 5/16           25 13/16          .41
                                           
1998
First Quarter..................    34 1/8            29 3/4            .41
Second Quarter.................    32 15/16          29 1/4            .41
Third Quarter..................    33 5/8            29 5/16           .42
Fourth Quarter.................    35 1/4            30 7/8            .42

1999
First Quarter..................    31 1/8           25 1/8             .42
(through March 19, 1999)

</TABLE>


The book value per share of BGE's common stock at December 31, 1998  was $19.98.
The  last   reported   sale  price of BGE's common stock on the New  York  Stock
Exchange on March 19, 1999 was $25 3/16.

    

                                       4

<PAGE>


DESCRIPTION OF COMMON STOCK

Below is a brief summary of your rights as holders of our common stock. You  can
find a complete  description  of these rights  in  our Charter.  See  Where  You
Can Find More Information.

Dividend Rights

   

We will pay dividends on our common stock when declared by our Board of
Directors. However, we must first pay all dividends and any redemption payments
due on our preferred stock (if any become outstanding) before paying common
stock dividends.

    

Voting Rights

   

Holders of our common stock are entitled to one vote per share on all matters on
which shareholders vote. There are no cumulative voting rights.

    


Liquidation

   

Our common stock has no par value. If we liquidate or dissolve, you will share
equally in any assets remaining after full payment of liabilities to our
creditors and the liquidation value per share plus accrued dividends due to
holders of our preferred stock (if any become outstanding).

    

General

You do not have any preemptive or special rights to purchase any shares of
common stock we may issue at a later date. We have not issued any securities
convertible into shares of our common stock. In addition, as holders of common
stock, you have no redemption, conversion or sinking fund rights. When issued to
you, the common stock will be legally issued, fully paid and nonassessable.

PLAN OF DISTRIBUTION

The common stock will be sold on a continuing basis through our agent, Salomon
Smith Barney. The agent agrees to use its reasonable efforts to solicit
purchases for the period of its appointment. We will receive all the proceeds
from the sale of the stock, after paying the agent a commission of no more than
5 cents per share and before deducting expenses of approximately $150,000. In
addition, we have agreed to reimburse the agent for certain of its expenses in
connection with the sale of the common stock.

The agent will sell the shares on the New York Stock Exchange, or on any other
exchange on which the shares are listed, at prevailing market prices through (a)
ordinary brokers' transactions or (b) in block transactions. In block
transactions, the agent may purchase all or a portion of the shares as principal
for its own account and resell them.

The agent may also sell the shares in a fixed price offering. If this happens,
we will sell shares to the agent for its own account at a negotiated price
(which is related to the prevailing market price), and the agent may form a
group of dealers to participate with it in reselling the shares to you. For this
type of sale, we will prepare and distribute a prospectus supplement which will
describe the offering price and the number of shares sold and customary
distributors' or sellers' commissions payable, if any.

The agent may also sell the shares by conducting a special offering or exchange
distribution in accordance with the rules of the stock exchange on which the
shares are listed. We would also prepare and distribute a prospectus supplement
for these types of offerings.

General Information

Dealers and agents that participate in the distribution of the common stock may
be underwriters as defined in the Securities Act of 1933 (1933 Act), and any
discounts or commissions received by them from us and any profit on the resale
of the common stock by them may be treated as underwriting discounts and
commissions under the 1933 Act.

                                       5

<PAGE>


We have an agreement with the agent to indemnify it from certain civil
liabilities, including liabilities under the 1933 Act or to contribute with
respect to payments which the agent may be required to make. We may have similar
agreements with dealers and other agents.

Dealers and agents may engage in transactions with, or perform services for, us
or our subsidiaries in the ordinary course of their business.

In connection with any fixed price offering, exchange distribution, or special
offering, the selling group, which would include dealers who enter into an
underwriting agreement with us, may engage in transactions which stabilize,
maintain or otherwise affect the market price of the common stock. Specifically,
the selling group may overallot in connection with the offering, creating a
short position. In addition, they may bid for, and purchase, the securities in
the open market to cover shorts or to stabilize the price of the common stock.
Finally, the selling group may reclaim selling concessions allowed for
distributing common stock in the offering, if the selling group repurchases
previously distributed common stock in the market to cover overallotments or to
stabilize the price of the common stock. Any of these activities may stabilize
or maintain the market price of the common stock above independent market
levels. The selling group is not required to engage in any of these activities,
and may stop any of the activities at any time.


LEGAL OPINION

One of our lawyers will issue an opinion regarding certain legal matters in
connection with the common stock offered pursuant to this prospectus. Cahill
Gordon & Reindel ( a partnership including a professional corporation), New
York, NY will issue an opinion for any underwriters, dealers or agents. Cahill
Gordon & Reindel will rely on the opinion of our lawyers as to matters of
Maryland law and the applicability of the Public Utility Holding Company Act of
1935.

EXPERTS

PricewaterhouseCoopers LLP, independent accountants, audited our annual
financial statements and schedule incorporated by reference in this prospectus
and elsewhere in the registration statement. These documents are incorporated by
reference herein in reliance upon the authority of PricewaterhouseCoopers LLP as
experts in accounting and auditing.

   


WHERE YOU CAN FIND
MORE INFORMATION

Constellation Energy will file annual, quarterly and current reports, proxy
statements and other information with the SEC. Prior to Constellation Energy
becoming BGE's holding company, reports, statements and other information were
filed by BGE under the name "Baltimore Gas and Electric Company." You may read
and copy any document filed by BGE or Constellation Energy at the SEC's public
reference room at 450 Fifth Street, N. W. Washington, D.C. 20549. Please call
the SEC at 1-800-SEC-0330 for further information on the public reference room.
The SEC maintains an internet site at http://www.sec.gov that contains reports,
proxy and information statements regarding issuers (including Constellation
Energy and BGE) that file documents with the SEC electronically. Constellation
Energy's SEC filings may also be obtained from our web site at
http://www.constellationenergy.com.

This prospectus is part of a registration statement that we filed with the SEC.
In addition, the SEC allows us to "incorporate by reference" the information we
file with them, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
considered to be part of this prospectus, and later information that we file
with the SEC will automatically update and supersede this information. We
incorporate by reference the documents listed below and any future filings made
with the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Securities

                                       6

<PAGE>

Exchange Act of 1934 until we sell all the common stock.
                                  
- -    BGE's Annual Report on Form 10-K for the year ended December 31, 1998.

You may request a copy of these filings, at no cost, by writing us at:

      Shareholder Services
      Constellation Energy Group, Inc.
      39 W. Lexington Street
      Baltimore, Maryland 21201
      410-783-5920

You should rely only on the information incorporated by reference or provided in
this prospectus or any prospectus supplement. We have not authorized anyone else
to provide you with different information. We are not making an offer of the
common stock in any state where the offer is not permitted. You should not
assume that the information in this prospectus or any prospectus supplement is
accurate as of any date other than the date on the front of those documents.

    

                                       7
<PAGE>

================================================================================
   


                               [GRAPHIC OMITTED]






                        Constellation Energy Group, Inc.

                                3,731,600 Shares

                                  Common Stock



- --------------------------------------------------------------------------------

                                   PROSPECTUS

- --------------------------------------------------------------------------------



                              Salomon Smith Barney



                             _________________,1999




    

================================================================================
<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS
   


Item 14.  Other Expenses of Issuance and Distribution.
     Securities and Exchange Commission Registration Fee.............. $28,410*
     Services of Independent Accountants......................... ....  45,000**
     Listing Fees.....................................................  15,000*
     Legal Fees and Expenses..........................................  35,000**
     Transfer Agent and Registrar Fees................................   5,000**
     Printing and Delivery Expenses...................................  10,000**
     Miscellaneous Expenses...........................................  11,590**
                                                                       ---------
     Total.............................................................$150,000

         --------------
         *  Previously paid
         ** Estimated
    


Item 15.  Indemnification of Directors and Officers.

     The  following  description  of  indemnification   allowed  under  Maryland
statutory law is a summary rather than a complete description. Reference is made
to Section 2-418 of the Corporations  and  Associations  Article of the Maryland
Annotated  Code,  which is incorporated  herein by reference,  and the following
summary is qualified in its entirety by such reference.

     By a Maryland  statute,  a Maryland  corporation may indemnify any director
who was or is a party or is  threatened  to be made a party  to any  threatened,
pending,  or completed  action,  suit or proceeding,  whether  civil,  criminal,
administrative or investigative  ("Proceeding") by reason of the fact that he is
a present or former  director of the  corporation  and any person  who,  while a
director of the corporation, is or was serving at the request of the corporation
as a  director,  officer,  partner,  trustee,  employee,  or  agent  of  another
corporation,  partnership,  joint venture, trust, other enterprise,  or employee
benefit  plan  ("Director").  Such  indemnification  may be  against  judgments,
penalties,  fines,  settlements and reasonable expenses actually incurred by him
in  connection  with the  Proceeding  unless  it is  proven  that (a) the act or
omission  of  the  Director  was  material  to the  matter  giving  rise  to the
Proceeding and (i) was committed in bad faith,  or (ii) was the result of active
and deliberate  dishonesty;  or (b) the Director  actually  received an improper
personal  benefit in money,  property,  or  services;  or (c) in the case of any
criminal action or proceeding,  the Director had reasonable cause to believe his
act or omission was unlawful.  However,  the  corporation  may not indemnify any
Director in connection  with a Proceeding by or in the right of the  corporation
if the Director has been adjudged to be liable to the corporation. A Director or
officer who has been successful in the defense of any Proceeding described above
shall be indemnified against reasonable expenses incurred in connection with the
Proceeding.  The  corporation  may not  indemnify  a Director  in respect of any
Proceeding  charging  improper  personal  benefits to the  Director in which the
Director  was  adjudged  to be liable on the basis  that  personal  benefit  was
improperly received.

                                      II-1

<PAGE>


Notwithstanding the above provisions, a court of appropriate jurisdiciton,  upon
application of  the  Director  or o fficer,  may  order  indemnification  if  it
determines that  in  view  of all the  entitle  to   indemnification;   however,
indemnification  with   respect   to   any  Proceeding by or in the right of the
corporation or  in w hich liability was  adjudged  on the  basis  that  personal
benefit  was  improperly received  shall be limited to  expenses.  A corporation
may  advance reasonable  expenses  to  a  Director  under certain circumstances,
including a written undertaking by or on behalf of such Director to repay he
amount if it shall ultimately be determined that the standard of conduct
necessary for indemnification by the corporation has not been met.

                                  
     A  corporation  may  indemnify  and  advance  expenses to an officer of the
corporation  to the  same  extent  that it may  indemnify  Directors  under  the
statute.

     The  indemnification  and advancement of expenses provided or authorized by
this statute may not be deemed exclusive of any other rights, by indemnification
or otherwise,  to which a Director or officer may be entitled under the charter,
by-laws, a resolution of shareholders or directors, an agreement or otherwise.

     A corporation  may purchase and maintain  insurance on behalf of any person
who is or was a Director or officer,  whether or not the corporation  would have
the power to  indemnify  a  Director  or  officer  against  liability  under the
provision of this section of Maryland law.  Further,  a corporation  may provide
similar protection, including a trust fund, letter of credit or surety bond, not
inconsistent with the statute.

   


         Article Eighth of the Company's Charter reads as follows:

         " (a)    (i)  The Corporation shall indemnify


             (A) its Directors and Officers,  whether serving the corporation or
at its request any other entity, to the full extent required or permitted by the
general laws of the State of Maryland,  now or hereafter in force, including the
advance of expenses,  under the procedures  and to the full extent  permitted by
law, and

             (B)  other  employees  and  agents,  to such  extent  as  shall  be
 authorized  by the  Board of  Directors  or the  Corporation's  by-laws  and be
 permitted by law.

            (ii) The foregoing rights of indemnification  shall not be exclusive
of any other rights to which those seeking indemnification may be entitled.

           (iii) The Board of Directors  may take such action as is necessary to
carry out these indemnification  provisions and is expressly empowered to adopt,
approve  and amend  from time to time such  by-laws,  resolutions  or  contracts
implementing such provisions or such further indemnification arrangements as may
be permitted by law. No amendment of the Charter of the Corporation or repeal of

                                      II-2
<PAGE>


any of its provisions shall limit or eliminate the right to indemnification prov
ided hereunder with respect to any act or omission occurring prior to such amend
ment or repeal.
                        
                  (b) To the fullest extent  permitted by Maryland  statutory or
decisional  law,  as  amended or  interpreted,  no  director  or Officer of this
Corporation  shall be personally  liable to the Corporation or its  stockholders
for money damages.  No amendment of the Charter of the  Corporation or repeal of
any of its  provisions  shall limit or  eliminate  the  limitation  on liability
provided to Directors and Officers hereunder with respect to any act or omission
occurring prior to such amendment or repeal."

         Article V of the Company's By-Laws reads as follows:

         "The Corporation shall indemnify all directors,  Officers and employees
to the fullest extent permitted by the general laws of the State of Maryland and
shall  provide  indemnification  expenses  in advance  to the  extent  permitted
thereby.  The Corporation will follow the procedures  required by applicable law
in   determining   persons   eligible   for   indemnification   and  in   making
indemnification payments and advances.

                  The  indemnification  and advance of expenses  provided by the
Charter and these by-laws  shall not be deemed  exclusive of any other rights to
which a person  seeking  indemnification  or advance of expenses may be entitled
under any law (common or statutory),  or any agreement,  vote of stockholders or
disinterested  Directors or other provision that is consistent with law, both as
to action in his or her official  capacity and as to action in another  capacity
while  holding  office  or  while  employed  by  or  acting  as  agent  for  the
corporation,  shall continue in respect of all events  occurring  while a person
was a Director  or  Officer  after  such  person has ceased to be a Director  or
Officer,  and shall  inure to the benefit of the estate,  heirs,  executors  and
administrators  of such  person.  All rights to  indemnification  and advance of
expenses under the Charter of the  Corporation  and hereunder shall be deemed to
be a  contract  between  the  corporation  and each  Director  or Officer of the
Corporation  who serves or served in such capacity at any time while this by-law
is in effect.  Nothing  herein  shall  prevent  the  amendment  of this  by-law,
provided  that no  such  amendment  shall  diminish  the  rights  of any  person
hereunder with respect to events occurring or claims made before its adoption or
as to claims made after its adoption in respect of events  occurring  before its
adoption.  Any  repeal  or  modification  of this  by-law  shall  not in any way
diminish any rights to  indemnification  or advance of expenses of such Director
or Officer or the obligations of the Corporation  arising hereunder with respect
to events  occurring,  or claims made, while this by-law or any provision hereof
is in force."

    

         The  Directors  and  officers of the  Company are covered by  insurance
indemnifying them against certain liabilities which might be incurred by them in
their  capacities  as such,  including  certain  liabilities  arising  under the


                                      II-3

<PAGE>

Securities Act of 1933. The premium for this insurance is paid by the Company.
 
   
                                   
         Also,  see  indemnification  provisions  in the  Form of  Sales  Agency
Agreement which is Exhibit 1(a) to this Post Effective Amendment.

    

Item 16.  Exhibits.
   


         Reference  is made to the  Exhibit  Index  filed as a part of this Post
Effective Amendment.

    

Item 17.  Undertakings.

(a)  The undersigned Registrant hereby undertakes:

                  (1) To file,  during any  period in which  offers or sales are
         being made, a post-effective amendment to this Registration Statement:

                      (i) To include any  prospectus  required by Section  10(a)
                  (3) of the  Securities  Act of 1933;

                           (ii) To reflect in the prospectus any facts or events
                  arising after the effective date of the Registration Statement
                  (or the most recent  post-effective  amendment thereof) which,
                  individually  or in the  aggregate,  represent  a  fundamental
                  change  in the  information  set  forth  in  the  Registration
                  Statement.  Notwithstanding  the  foregoing,  any  increase or
                  decrease in volume of securities  offered (if the total dollar
                  value of  securities  offered  would not exceed that which was
                  registered)  and any deviation from the low or high end of the
                  estimated  maximum offering range may be reflected in the form
                  of  prospectus  filed  with the  Commission  pursuant  to Rule
                  424(b) if, in the  aggregate,  the changes in volume and price
                  represent  no more than a 20% change in the maximum  aggregate
                  offering price set forth in the  "Calculation  of Registration
                  Fee" table in the effective registration statement;
                                      
                           (iii)  To  include  any  material   information  with
                  respect to the plan of distribution  not previously  disclosed
                  in the  Registration  Statement or any material change to such
                  information in the Registration Statement;

                  Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do
         not apply if the  Registration  Statement is on Form S-3,  Form S-8, or
         Form  F-3  and  the   information   required   to  be   included  in  a
         post-effective  amendment by those  paragraphs is contained in periodic
         reports  filed  with  or  furnished  to  the  Securities  and  Exchange
         Commission by the Registrant pursuant to Section 13 or Section 15(d) of
         the Securities  Exchange Act of 1934 that are incorporated by reference
         in the Registration Statement.
                                     
                                      II-4

<PAGE>

                  (2) That, for the purpose of determining  any liability  under
         the Securities Act of 1933, each such post-effective amendment shall be
         deemed to be a new  Registration  Statement  relating to the securities
         offered therein, and the offering of such securities at that time shall
         be deemed to be the initial bona fide offering thereof.

                  (3) To remove from  registration by means of a  post-effective
         amendment any of the securities being registered which remain unsold at
         the termination of the offering.

(b)  The  undersigned   Registrant  hereby  undertakes  that,  for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
Registration  Statement  shall  be  deemed  to be a new  Registration  Statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

(c) Insofar as indemnification  for liabilities arising under the Securities Act
of 1933 may be permitted to Directors,  officers and controlling  persons of the
Registrant  pursuant  to the  provisions  described  under  Item  15  above,  or
otherwise, the Registrant has been advised that in the opinion of the Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Act and is, therefore, unenforceable. In the event that a claim
for  indemnification  against  such  liabilities  (other than the payment by the
Registrant of expenses  incurred or paid by a Director,  officer or  controlling
person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  Director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

                                      II-5

<PAGE>



                                   SIGNATURES

   


         Pursuant  to  the   requirements   of  the   Securities  Act  of  1933,
Constellation  Energy  Group,  Inc.,  the  Registrant,  certifies  that  it  has
reasonable  grounds to believe that it meets all of the  requirements for filing
on Form S-3 and has duly  caused  this Post-Effective  Amendment  No. 1 to this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized, in the City of Baltimore,  State of Maryland on the 25th day of
March, 1999.

                                               CONSTELLATION ENERGY GROUP, INC.
                                               (Registrant)

    

                                               By:    /s/ David A. Brune  
                                                      -------------------
                                                          David A. Brune
                                                          Vice President

   

         Pursuant to the requirements  of the Securities Act of 1933, this Post-
Effective  Amendment No. 1 to this Registration  Statement has been signed below
by the following persons in the capacities and on the dates indicated.

    


        Signature                       Title                    Date
       ----------                     --------                  ------

Principal executive
officer and director:

   

* Charles W. Shivery              Chairman of the         March 25, 1999
                                  Board, President
                                  and Director
                           


Principal financial
and accounting officer:



/s/ David A. Brune                 Vice President,         March 25, 1999
- -------------------                Secretary and                                
   David A. Brune                  Director
                          


/s/ Thomas E. Ruszin, Jr.         Treasurer and            March 25, 1999
- -------------------------         Director         
    Thomas E. Ruszin, Jr.   


*By: /s/ David A. Brune
    --------------------
     David A. Brune, Attorney-in-Fact

    


                                      II-6

<PAGE>


                                   
                                     
                                  EXHIBIT INDEX
   

Exhibit
Number
- -------
 1                -   Form  of  Sales  Agency  Agreement,  
                      including  Form  of  Volume  and  Pricing
                      Parameters and Form of Terms Agreement.

 4(a)*            -   Amended and Restated  Articles of Incorporation of
                      Constellation  Energy Group, Inc.  (Designated  as 
                      Exhibit  3.1 to  Post-Effective  Amendment  No.1 to the
                      Registration Statement on Form S-4 filed March 3, 1999,
                      File No. 33-64799.)

 4(b)*            -   By-Laws of  Constellation  Energy  Group,  Inc. 
                      Designated  as Exhibit 3.2 to Post-Effective  Amendment
                      No.1 to the Registration  Statement on Form S-4 filed
                      March 3, 1999, File No. 33-64799.)

 4(c)             -   Form of Common Stock Certificate.

 5                -   Opinion of Company Counsel as to legality.

 23(a)            -   Consent of PricewaterhouseCoopers LLP, Independent 
                      Public Accountants.                    

 23(b)            -   Consent of Company Counsel (included in Exhibit 5).

 24               -   Power of Attorney.

    
- ------------------

       *  Incorporated by reference.


                                      II-7


                                                                   Exhibit 1

   
                              _____________ Shares

                        Constellation Energy Group, Inc.

                                  Common Stock

                         Form of Sales Agency Agreement


                                                               __________, 1999


Salomon Smith Barney Inc.
390 Greenwich Street
New York, NY  10013

    


Ladies and Gentlemen:

   

         The  undersigned,   Constellation   Energy  Group,   Inc.,  a  Maryland
corporation  (the  "Company"),  hereby confirms its agreement with Salomon Smith
Barney Inc. (the "Agent") as follows:

         1.  Issuance and Sale of Common  Stock.  The Company has  authorized by
appropriate  corporate  action  and  proposes  to issue  and sell in the  manner
contemplated  by this  Agreement up to __________  shares (the  "Shares") of its
Common Stock (the "Common Stock"),  having the terms and provisions set forth in
the Charter of the Company,  amended and restated as of _________,  1999 (a copy
of which has  heretofore  been  delivered  to the Agent) and  summarized  in the
Prospectus hereinafter mentioned.  Subject to the terms and conditions stated in
this Agreement, the Company hereby (a) appoints the Agent as its exclusive sales
agent for the purpose of soliciting  purchases of the Shares from the Company by
others and (b) agrees that whenever it determines to sell Shares directly to the
Agent as principal  for resale to others,  it will enter into a Terms  Agreement
(as  defined in Section  2(b)  hereof)  with the Agent  relating to such sale in
accordance with Section 2(b) hereof.

    


         2. Solicitations as Agent; Purchases as Principal. (a) Solicitations as
Agent. On the basis of the representations and warranties herein contained,  but
subject to the terms and conditions  herein set forth,  the Agent agrees,  as an
agent of the Company,  to use its  reasonable  best efforts to solicit offers to
purchase the Shares.  The Agent and the Company  agree that such  solicitations,
and offers for the sale of the Shares, shall commence upon receipt of, and shall
be made in accordance with,  written  instructions from the Company to the Agent

                                       1

<PAGE>

(which shall be substantially in the form of Exhibit A hereto and which may take
the  form of an  exchange  of any  standard  form of  written  telecommunication
between the Agent and the  Company)  and shall  continue  until such time as the
Company has  instructed  the Agent that such  solicitations  and offers shall be
suspended in accordance with Section 8 hereof. The Company  reserves the right,
in its sole  discretion,  to instruct the Agent,  at any time and from time to
time after the  Commencement  Date (as defined  in  Section  7  hereof),  to  so
commence  or  suspend  such solicitations and  offers  for  any  period of  time
or permanently  in accordance  with the provisions of this Agreement.


         In  soliciting  purchases  of the  Shares  from the  Company  by others
(including customers of the Agent), the Agent will be acting for the Company and
not as principal.  The Agent,  as the exclusive  agent for the offer and sale of
the Shares, will use its reasonable best efforts to sell the Shares on behalf of
the Company as contemplated hereby; provided,  however, that it is understood by
the Company that the Agent has no obligations  to find  purchasers of the Shares
and that the Agent in its sole  discretion,  upon notice thereof to the Company,
can suspend from time to time its efforts in offering for sale,  and  soliciting
purchases of, the Shares.  In any transaction where the Agent has acted as agent
for the  Company  and has not  purchased  as  principal,  the Agent will use its
reasonable  best efforts to obtain  performance by each purchaser of Shares from
the Company,  but the Agent will not have  liability to the Company in the event
any such purchase is not  consummated  for any reason except as may be otherwise
provided by any applicable regulations and rules of the Exchanges (as defined in
Section 3(a) (i) hereof) on which the  transaction  was executed and except that
the Agent will  complete  the  purchase  in  accordance  with the customs of the
Exchanges  in the case of  transactions  in which the  Agent  has also  acted as
broker  for  the  purchaser.   The  Company  also   understands  that  under  no
circumstances  shall the Agent be  obligated  to purchase any Shares for its own
account,  except (i)  pursuant  to a Terms  Agreement,  (ii) as  provided in the
preceding  sentence and (iii) except to the extent that the Agent has acted as a
principal  in  purchasing  a portion  of a block as  contemplated  by  Section 3
(a)(ii)  hereof,  or has made a firm  commitment  with the Company in connection
with an offering or distribution of the type  contemplated by Section 3(a) (iii)
hereof that has been  expressly  authorized  by the Company and agreed to by the
Agent.

         (b)  Purchases  as  Principal.  Each  sale of  Shares  to the  Agent as
principal  for resale to others  shall be made in  accordance  with the terms of
this Agreement and,  except for purchases made in accordance with the customs of
the Exchanges in the case of  transactions  in which the Agent has also acted as

                                       2

<PAGE>

broker for a purchaser and in the case of transactions permitted by Section 3(a)
(ii) hereof, a separate  agreement that will provide for the sale of such Shares
to, and the purchase and  reoffering  thereof by, the Agent.  Each such separate
agreement  (which  shall be  substantially  in the form of  Exhibit B hereto and
which  may  take  the  form of an  exchange  of any  standard  form  of  written
telecommunication  between the Agent and the Company) is herein referred to as a
"Terms  Agreement".  The Agent's  commitment to purchase  Shares pursuant to any
Terms  Agreement  shall  be  deemed  to  have  been  made  on the  basis  of the
representations  and  warranties  of the Company  herein  contained and shall be
subject  to  the  terms  and  conditions  herein  set  forth.  Unless  expressly
authorized  by the  Company in the Terms  Agreement,  or as  otherwise  provided
herein, the Agent will not be authorized to utilize a selling or dealer group in
connection with the resale of the Shares  purchased.  Such Terms Agreement shall
also specify the  requirements  for the opinions of counsel,  comfort letter and
officer's   certificate   pursuant  to  Sections  7(b),  7(c),  7(d)  and  7(e),
respectively, hereof.

         3. Manner of Offer and Sale.  (a) Method of Offer and Sale.  The Shares
may be offered and sold by any of the following methods:

                  (i) Ordinary Brokers' Transactions.  The Shares may be offered
         and  sold by the  Agent in  ordinary  regular-way  transactions  in the
         auction market on the floor of the New York Stock  Exchange,  Inc. (the
         "NYSE") or any other stock  exchange  on which the Common  Stock may be
         listed or admitted to trading (the NYSE, together with such other stock
         exchanges, the "Exchanges").

                  (ii)  Block  Transactions.  The  Agent may  solicit  offers to
         purchase  Shares,  and offer Shares for sale,  in  transactions  on the
         Exchanges in "crosses" of blocks where the Agent acts as broker for the
         buyers in addition to acting as agent for the Company. It is understood
         that on occasion the Agent may also act as a principal and purchase for
         its own  account,  with the  consent of the  Company,  a portion of the
         Shares being sold in the cross of a block. The Agent may also offer and
         sell  Shares in block  transactions  on the  Exchanges  in which  other
         broker-dealers  are  acting as broker  for all or some of the buyers of
         the Shares being sold in such  transactions.  In the  discretion of the
         Agent,  the Agent may also sell Shares in block  transactions to one or
         more  broker-dealers  purchasing  such  Shares,  or a  portion  of such
         Shares,  as principal  for their own  account,  with the consent of the
         Company. Any of the transactions contemplated by this Section 3(a) (ii)
         may be executed in the over-the-counter market, with broker-dealers who

                                       3

<PAGE>

         are not members of the Exchanges or otherwise,  provided that the Agent
         has obtained any necessary  permission  from officials of the Exchanges
         or such  transactions are otherwise in compliance with the rules of the
         Exchanges.
                                       
                  (iii) Fixed Price Offerings.  With the prior  authorization of
         the  Company,  and  any  necessary  permission  from  officials  of the
         Exchanges, the Agent may conduct fixed price offerings off the floor of
         the  Exchanges,  in which  the  Agent  has  committed  to  purchase  as
         principal the Shares involved in such offerings and dealers selected by
         the Agent  participate  in the  resale of such  Shares.  With the prior
         authorization  of the  Company,  the  Agent may also  conduct  "special
         offerings"  or  "exchange  distributions"  of  Shares  on the  NYSE  in
         accordance with Rule 391 and Rule 392, respectively,  of the NYSE or on
         any  one  or  more  of the  other  Exchanges  in  accordance  with  the
         appropriate  rules of such other  Exchanges.  It is understood that the
         terms of "fixed price  offerings,"  "special  offerings"  and "exchange
         distributions"  contemplated  by this  Section  3(a) (iii) will in each
         case be subject to the prior approval of the Company.

         (b) Market Prices. The Company understands that sales of Shares will be
made at market prices prevailing at the time of sale in the case of transactions
on the Exchanges and at prices negotiated by the Agent and related to prevailing
market prices in the case of over-the-counter  transactions;  provided, however,
that the price per share to be paid to the  Company  for the Shares  shall be in
compliance with the terms of this Agreement and the Procedures.

         (c) Discounts, Commissions,  Concessions, Etc. The Company will (i) pay
to the Agent,  on each  Settlement  Date (as defined in Section 4) in respect of
the sale of any Shares  solicited by the Agent,  in same day funds,  commissions
for its  services  in acting as agent for the Company in the sale of such Shares
in an amount  per share to be  negotiated  as  provided  in the  Procedures  (as
defined in Section 3(e) hereof) for the types of transactions involved (but not,
in any event,  to exceed $0.05 per share) (it being  understood that the Company
and the Agent may agree upon payment for such  commissions  in such other manner
as they  may  determine  in  accordance  with the  Procedures)  and (ii) pay the
reasonable  fees and  expenses  of  Cahill  Gordon & Reindel  ("Counsel  for the
Agent")  in  connection  with  the  offer  and  sale of the  Shares.  Discounts,
commissions,  concessions,  the  offering  price and other terms of offerings or
distributions  referred to in Sections  2(b) and 3(a) hereof will be agreed upon
by the  Company and the Agent prior to any such  offering or  distribution.  The
Company  understands  and agrees that,  in any sale of Shares where the Agent is

                                       4

<PAGE>

also  acting  as broker  for a buyer of  Shares,  the  Agent may also  receive a
brokerage  commission  from the buyer in any amount  negotiated by the Agent and
such buyer.

                                      
<PAGE>

         (d) Authorized Actions. The Company agrees that,  concurrently with the
offer  and sale of  Shares on behalf  of the  Company  as  contemplated  by this
Agreement,  the  Agent  may (i) act as  broker  for the sale of shares of Common
Stock by customers other than the Company,  (ii) to the extent  permitted by the
rules  and   regulations  of  the  Securities  and  Exchange   Commission   (the
"Commission")  under the Securities  Exchange Act of 1934, (the "Exchange Act"),
solicit the sale of shares of Common Stock by  customers  other than the Company
through the Agent as broker for the seller, solicit the sale of shares of Common
Stock by customers  other than the Company to the Agent as principal and solicit
offers to purchase  shares of Common Stock and (iii) offer and sell as principal
for its own  account  Shares  that the Agent has  purchased  from the Company as
contemplated  by Sections  2(b) and 3(a) (ii) or shares of Common Stock that the
Agent has otherwise acquired in transactions permitted by this Agreement.

         (e) Procedures.  Procedural  details  relating to the offer and sale of
the Shares, and the issue and delivery of the Shares and payment for the Shares,
are set forth in the Common Stock  Procedures  attached hereto as Exhibit C (the
"Procedures").  The Agent and the Company  each agree to perform the  respective
duties and  obligations to be performed by them as provided in the Procedures as
amended  from time to time.  The  Procedures  may be  amended  only by a written
agreement  of the  Company  and the Agent.  The Agent  agrees that the number of
Shares to be offered and sold from time to time,  and the prices at which Shares
are to be offered and sold, will be in compliance with  limitations  established
by the Company with the Agent in accordance with the Procedures.

         (f)  Compliance  with Laws and  Regulations.  The Agent  agrees that in
carrying out the  transactions  contemplated by this Agreement,  it will observe
and comply  with (i) all  applicable  securities  laws,  regulations,  rules and
ordinances  of any  jurisdiction  in which the  Shares may be  offered,  sold or
delivered  and (ii) all  applicable  regulations  and rules of the  Exchanges on
which such transactions are executed.

         4. Delivery of Shares.  Delivery of Shares sold in  transactions of the
types  referred to in Section 3(a) hereof will take place through the book-entry
processing  of the  Depository  Trust  Company  ("DTC")  deposit  withdrawal  at
custodian  ("DWAC")  system on the date that is three  Business Days (as defined
below) after the "trade date" for the sale of such Shares,  against  delivery to
the Company in same day funds of the purchase  price for such Shares;  provided,
however,  that the Company and the Agent may agree upon  delivery of and payment


                                       5

<PAGE>



for Shares sold in particular  transactions  at such other time and place and in
such other manner as they may determine in accordance with the  Procedures.  The
date of delivery to the Agent of Shares sold against  delivery to the Company of
funds in payment  therefor is herein called the  "Settlement  Date." Delivery of
Shares, and payment, for Shares sold pursuant to a Terms Agreement shall be made
in accordance with such Terms Agreement.  Except as may be otherwise  determined
by the NYSE, "Business Day" as used in this Agreement means any day on which the
NYSE is open for business other than any such day on which banking  institutions
in New York City are authorized or obligated by law to close.

         5.   Representations  and  Warranties  of  the  Company.   The  Company
represents and warrants to the Agent that:

   

         (a) Filing of Registration  Statement with  Commission.  A registration
statement on Form S-3 (File No. 333-24855) relating to the Shares, as amended by
Post Effective Amendment No. 1, including a prospectus,  has been filed with the
Commission  under  the  Securities  Act of  1933,  (the  "Securities  Act"),  in
accordance  with  Rule  415  of  the  published  rules  and  regulations  of the
Commission  (the  "Regulations")  under the  Securities  Act. Such  registration
statement  has been  declared  effective by the  Commission.  References in this
Agreement  to the  "Registration  Statement"  at a  particular  time are to such
registration  statement,  as it may have been  amended or  supplemented  at such
time,  including all exhibits  thereto and all  documents  that at such time are
incorporated  by  reference  therein.   References  in  this  Agreement  to  the
"Prospectus"  at a  particular  time are to the form of  preliminary  prospectus
filed as a part of the Registration  Statement at such time and, thereafter,  to
the prospectus  first filed with the  Commission  pursuant to Rule 424(b) of the
Regulations   under  the  Securities  Act,  as  it  may  have  been  amended  or
supplemented  at such  time,  including  all  documents  that at such  time  are
incorporated by reference therein.

    


         (b) Registration Statement;  Prospectus and Incorporated Documents. (i)
The  Registration  Statement,  at the date of this  Agreement and any applicable
Terms  Agreement  and  at  the  Commencement  Date,  as it  may  be  amended  or
supplemented at each such time, complies and will comply, as the case may be, in
all material  respects with the Securities Act and the  Regulations  thereunder;
the  Prospectus,  at the  date  of  this  Agreement  and  any  applicable  Terms
Agreement,  at the  date  it is  first  filed  pursuant  to Rule  424(b)  of the
Regulations under the Securities Act and at the Commencement  Date, as it may be
amended or supplemented at each such time, complies and will comply, as the case
may be, in all material  respects with the  Securities  Act and the  Regulations


                                       6

<PAGE>



thereunder;  (ii) the  Registration  Statement at the date of this Agreement and
any  applicable  Terms  Agreement  and at the  Commencement  Date,  as it may be
amended or  supplemented  at each such time,  does not and will not, as the case
may be,  contain  an  untrue  statement  of a  material  fact or omit to state a
material fact required to be stated  therein or necessary to make the statements
therein not misleading;  the  Prospectus,  at the date of this Agreement and any
applicable  Terms  Agreement,  at the date it is first  filed  pursuant  to Rule
424(b) of the Regulations under the Securities Act and at the Commencement Date,
as it may be amended or  supplemented  at each such time, does not and will not,
as the case may be,  contain an untrue  statement of a material  fact or omit to
state a material fact necessary in order to make the statements  therein, in the
light of the circumstances under which they were made, not misleading; provided,
however, that these representations and warranties do not apply to statements or
omissions in such documents,  based upon information furnished to the Company in
writing  by the  Agent  expressly  for use  therein;  and  (iii)  the  documents
incorporated  by  reference  in the  Registration  Statement  or the  Prospectus
pursuant  to Item 12 of Form S-3 of the  Securities  Act,  at the time they were
filed  with  the  Commission,   complied  in  all  material  respects  with  the
requirements of the Exchange Act, and the Regulations thereunder.

         6. Covenants of the Company. The Company covenants and agrees that:

         (a) Filing of Prospectus with  Commission;  No Stop Order.  The Company
will cause the  Prospectus,  and any  amendments or supplements  thereto,  to be
filed with, or transmitted for filing to, the Commission in accordance with Rule
424(b) of the  Regulations  under the  Securities  Act and will notify the Agent
immediately,  and  confirm  such  notice  in  writing,  of the  issuance  by the
Commission  of  any  stop  order  under  the   Securities   Act  suspending  the
effectiveness  of  the  Registration  Statement  or of  the  initiation  of  any
proceedings for that purpose.  The Company will make every reasonable  effort to
prevent the issuance by the  Commission  of any stop order and, if any such stop
order shall at any time be issued, to obtain the lifting thereof at the earliest
possible moment.

         (b) Amendments and Supplements.  From the time  solicitation  regarding
sale of the  Shares  is begun  until  all of the  Shares  have been sold (i) the
Company will advise the Agent  promptly of any  proposal to amend or  supplement
the  Registration  Statement  or the  Prospectus  by means  of a  post-effective
amendment, sticker, or supplement (including a prospectus filed pursuant to Rule
424(b)  of the  Regulations  under  the  Securities  Act that  differs  from the


                                      7

<PAGE>

Prospectus first filed pursuant to such Rule 424(b) but excepting post-effective
amendments,  supplements,  and stickers  relating solely to pricing,  if any and
incorporation of document(s) by reference into the Registration Statement or the
Prospectus);  (ii) the Company will afford the Agent a reasonable opportunity to
comment on any such proposed  post-effective  amendment,  sticker or supplement;
and  (iii)  the  Company  will  advise  the  Agent  of the  filing  of any  such
post-effective amendment, sticker or supplement.
                                     
         (c) Copies of Registration  Statement and Prospectus.  The Company will
promptly  deliver  to the  Agent  a  fully  executed  copy  of the  Registration
Statement as originally filed including documents  incorporated by reference and
of  all  amendments  thereto,   heretofore  or  hereafter  made,  including  any
post-effective  amendment  thereto (in each case  including  all exhibits  filed
therewith not previously furnished), including signed copies of each consent and
certificate included therein or filed as an exhibit thereto, and will deliver to
the Agent as many conformed copies of the foregoing  (excluding the exhibits) as
the Agent may  reasonably  request.  The Company  will deliver to the Agent from
time to time during the period when the  Prospectus  is required to be delivered
under the Securities Act, such number of copies of the Prospectus (including any
amendments or supplements  thereto), as the Agent may reasonably request for the
purposes contemplated by the Securities Act and the Regulations thereunder.

         (d)  Compliance  with the  Securities  Act.  During the period when the
Prospectus  is required to be delivered  under the  Securities  Act, the Company
will comply so far as it is able, and at its own expense,  with all requirements
imposed upon it by the Securities Act and by the Regulations thereunder,  so far
as  necessary  to permit  the  continuance  of sales of or dealing in the Shares
during such period in accordance with the provisions hereof and the Prospectus.

         (e) Changes of Material Fact. If the Company  determines that any event
relating  to or  affecting  the  Company  shall occur as a result of which it is
necessary  to  amend or  supplement  the  Prospectus  (as it may be  amended  or
supplemented at such time) in order to make the Prospectus (as it may be amended
or supplemented  at such time) not misleading in the light of the  circumstances
existing at the time it is delivered to a purchaser,  the Company will forthwith
(i) notify the Agent to suspend solicitations of offers to purchase,  and offers
for the sale of, the Shares (and, if so notified by the Company, the Agent shall
forthwith  suspend such  solicitations and offers and cease using the Prospectus
as supplemented  or amended) and (ii) prepare and furnish to the Agent,  without

                                       8

<PAGE>

expense  to the  Agent,  a  reasonable  number  of  copies  of an  amendment  or
amendments  or a  supplement  or  supplements  to the  Prospectus  (as it may be
amended  or  supplemented  at such  time)  that  will  amend or  supplement  the
Prospectus  (as it may be  amended  or  supplemented  at such  time)  so that as
amended or  supplemented  it will not include an untrue  statement of a material
fact or omit to state a material fact  necessary in order to make the statements
therein,  in the light of the circumstances  existing at the time the Prospectus
(as so amended or supplemented) is delivered to a purchaser, not misleading. For
the purpose of this Section 6(e) the Company  will furnish such  information  as
the Agent may from time to time reasonably request.
                                       
         (f)  Earnings  Statement.  Not later  than 45 days after the end of the
12-month  period  beginning  at the end of the fiscal  quarter of the Company in
which the Commencement Date occurs, the Company will make generally available to
its security holders an earnings  statement (which need not be audited) covering
such 12-month  period which will satisfy the  provisions of Section 11(a) of the
Act.
                                    
         (g) Blue Sky  Qualification.  During the period when the  Prospectus is
required to be delivered under the Act, the Company will use its best efforts to
qualify  the  Shares  for  offer  and  sale  under  the  blue  sky  laws of such
jurisdictions as the Agent may reasonably  designate,  and will file and make in
each year such statements or reports as are or may be reasonably required by the
laws of such  jurisdictions;  provided,  however,  that the Company shall not be
required to qualify as a foreign  corporation or dealer in securities or to file
any consents to service of process under the laws of any jurisdiction.

         (h) Payment of Expenses.  Whether or not the transactions  contemplated
hereunder are consummated or this Agreement or any applicable Terms Agreement is
terminated, the Company will pay all expenses incident to the performance of its
obligations  under this  Agreement or such Terms  Agreement,  including  (i) the
preparation,  printing and filing of this Agreement,  such Terms Agreement,  the
Registration  Statement as originally  filed and any  amendments or  supplements
thereto,  the preliminary  prospectuses filed as a part thereof,  the Prospectus
and any amendments and  supplements  thereto and any documents  incorporated  by
reference  therein  and, in each case,  the  exhibits  thereto,  in each case in
quantities  as required by the Agent  under this  Agreement,  (ii) the issue and
delivery  of the  Shares as  provided  in  Section 4 hereof,  (iii) the fees and
expenses  of  the  accountants,   (iv)  the  expenses  in  connection  with  the
qualification  of the  Shares  under  securities  laws in  accordance  with  the
provisions  of  Section  6(g)  hereof,  including  filing  fees and the fees and
disbursements of Counsel for the Agent in connection therewith and in connection

                                       9

<PAGE>

with the  preparation  of any  Blue  Sky  Survey,  (v) the  reasonable  fees and
expenses of Counsel for the Agent,  (vi) the  commissions and amounts payable in
accordance  with  Section  3(c)  hereof  and  (vii)  any  advertising  and other
out-of-pocket  expenses of the Agent  incurred with the approval of the Company.
If this  Agreement is terminated in accordance  with the provisions of Section 7
or 12 hereof,  the Company shall pay for reasonable  fees and  disbursements  of
Counsel for the Agent. The Company shall not in any event be liable to the Agent
for damages on account of the loss of anticipated profits.

         7.  Conditions of Agent's  Obligations.  The obligation of the Agent to
solicit offers to purchase the Shares as agent of the Company, the obligation of
any  purchaser of Shares sold through the Agent as agent and the  obligation  of
the Agent to purchase Shares pursuant to any Terms Agreement shall be subject at
10:00 A.M., New York City time, on__________1999, or at such later time and date
as the Agent and the Company may agree upon (the  "Commencement  Date"),  and at
all  times  thereafter,  to  the  accuracy  in  all  material  respects  of  the
representations  and warranties on the part of the Company herein  contained and
to the  accuracy  of  the  statements  of the  Company's  officers  made  in any
certificate  furnished pursuant to the provisions hereof, to the performance and
observance by the Company of all covenants and agreements  herein  contained and
to the following additional conditions precedent:
                                     
         (a) Filing of Prospectus  with  Commission;  No Stop Order;  Regulatory
Approvals.  The Prospectus and any amendments or supplements thereto, shall have
been filed with, or transmitted for filing to, the Commission in accordance with
Rule  424(b) of the  Regulations  under the  Securities  Act; no stop order with
respect  to the  effectiveness  of the  Registration  Statement  shall have been
issued under the Securities  Act by the  Commission and no proceedings  therefor
shall have been  instituted  or, to the  knowledge  of the  Company or the Agent
shall be contemplated by the Commission.

         (b) Opinion of Counsel of the Company. On the Commencement Date and, if
specified in any Terms  Agreement,  on the Settlement  Date therefor,  the Agent
shall have received the favorable  opinion dated as of the Commencement  Date or
such Settlement  Date, as the case may be, of legal counsel for the Company,  in
form and substance satisfactory to Counsel for the Agent, to the effect that:

   

                  (i) The Company,  Baltimore Gas and Electric Company,  ("BGE")
         and Constellation Enterprises, Inc. ("CEI") have been duly incorporated
         and are validly existing as corporations in good standing under the law

                                       10

<PAGE>

         of the State of  Maryland,  with  power and  authority  (corporate  and
         other) to own their respective  properties and conduct their respective
         businesses as described in the Prospectus;  the Company owns all of the
         outstanding  shares of common  stock of BGE and CEI; and the Company is
         duly qualified to do business as a foreign corporation in good standing
         in all  jurisdictions  in which  the  conduct  of its  business  or the
         ownership of its properties requires such qualification and the failure
         to do so would  have a material  and  adverse  impact on its  financial
         condition;

    
                                       
                  (ii) the  Shares  have been  duly  authorized  and will,  upon
         issuance and delivery  thereof in  compliance  with this  Agreement and
         against payment therefor pursuant to this Agreement, be duly authorized
         and issued,  fully paid and  non-assessable  shares and the issuance of
         the Shares is not subject to preemptive rights;

                  (iii)  the  Shares  conform  as  to  legal  matters  with  the
         statements  concerning  them  in the  Registration  Statement  and  the
         Prospectus under the caption "DESCRIPTION OF COMMON STOCK";

                  (iv) this Agreement or such Terms  Agreement,  as the case may
         be, has been duly authorized, executed and delivered by the Company;
   

                  (v)  such  counsel  knows  of no  approval  of any  regulatory
         authority which is legally  required for the valid offering,  issuance,
         sale and  delivery  of the Shares by the Company  under this  Agreement
         (except that such opinion need not pass upon the  requirements of state
         securities acts);

    

                  (vi) the Registration Statement has become effective under the
         Securities Act, and, to the best of such counsel's  knowledge,  no stop
         order suspending the  effectiveness  of the Registration  Statement has
         been issued and no proceedings for that purpose have been instituted or
         are pending or contemplated  under the Securities Act. The Registration
         Statement (as of its effective date) and the Prospectus (as of the date
         of this Agreement),  and any amendments or supplements  thereto,  as of
         their  respective  effective or issue  dates,  appeared to comply as to
         form in all material  respects with the  requirements of Form S-3 under
         the  Securities Act and the  Regulations of the Commission  thereunder.
         Such  counsel  has no reason to believe  that  either the  Registration
         Statement or the Prospectus, or any such amendment or supplement, as of
         such  respective  dates,  contained any untrue  statement of a material
         fact or  omitted  to state  any  material  fact  required  to be stated

                                       11

<PAGE>

         therein or necessary to make the statements therein not misleading. The
         descriptions in the Registration  Statement and Prospectus of statutes,
         legal and  governmental  proceedings  and contracts and other documents
         are accurate and fairly present the  information  required to be shown.
         Such  counsel  does not know of any legal or  governmental  proceedings
         required to be described in the  Prospectus  which are not described as
         required,  nor of any contracts or documents of a character required to
         be described in the Registration Statement or Prospectus or to be filed
         as exhibits to the  Registration  Statement  which are not described or
         filed as required.  It is understood  that such counsel need express no
         opinion  as  to  the  financial   statements  or  other  financial  and
         statistical  information contained in the Registration Statement or the
         Prospectus; and

   
                  (vii)  the  issuance,  sale  and  delivery  of the  Shares  as
         contemplated  by this  Agreement are not subject to the approval of the
         Commission  under the provisions of the Public Utility  Holding Company
         Act of 1935, as amended (the "1935 Act").

    

In rendering the above opinions, counsel for the Company may rely, as to matters
of fact, to the extent deemed proper, on certificates of responsible officers of
the Company,  public  officials,  and  Ballard,  Spahr,  Andrews & Ingersoll,  a
Pennsylvania  counsel for the  Company.  References  to the  Prospectus  in this
Section  7(b) include any  amendments  or  supplements  thereto at the date such
opinion is rendered.
                                     
   

         (c) Opinion of Counsel for the Agent. On the Commencement  Date and, if
specified in any Terms Agreement,  the Settlement Date therefor, the Agent shall
have received the favorable  opinion dated as of the  Commencement  Date or such
Settlement  Date,  as the case may be, of Counsel for the Agent with  respect to
the matters set forth in  subheadings  (ii),  (iii),  (iv),  (v) and, the second
sentence of (vi) of  paragraph  (b) of this  Section 7, and with respect to such
other matters as the Agent may  reasonably  require.  In rendering such opinion,
Cahill Gordon & Reindel may rely, as to the  incorporation  of the Company,  all
other  matters   governed  by  the  laws  of  the  State  of  Maryland  and  the
applicability  of the 1935  Act upon the  opinion  of  counsel  for the  Company
referred to above,  and, as to matters  governed by the laws of the Commonwealth
of Pennsylvania, upon an opinion of Ballard, Spahr, Andrews & Ingersoll.

         In  addition,  such  counsel  shall state that it has  participated  in
conferences with officers and other representatives of the Company,  counsel for

                                       12

<PAGE>

the  Company,  representatives  of the  independent  public  accountants  of the
Company and  representatives  of the Agent at which  conferences the contents of
the  Registration   Statement  and  the  Prospectus  and  related  matters  were
discussed;  and,  although  such counsel is not passing upon and does not assume
any responsibility for the accuracy,  completeness or fairness of the statements
contained in the Registration Statement and Prospectus (except as to the matters
referred to in their opinion rendered  pursuant to clause (iii) of paragraph (b)
of this Section 7), on the basis of the foregoing  (relying as to materiality to
a large extent upon the opinions of officers,  counsel and other representatives
of the Company),  no facts have come to the attention of such counsel which lead
such  counsel  to believe  that  either the  Registration  Statement,  as of its
effective  date, or the Prospectus,  as of the date of this  Agreement,  and any
amendments or supplements  thereto,  as of their  respective  effective or issue
dates,  contained an untrue  statement of a material  fact or omitted to state a
material fact required to be stated therein or necessary to make such statements
therein not  misleading  (it being  understood  that such  counsel  need make no
comment  with  respect  to the  financial  statements  or  other  financial  and
statistical  data  included or  incorporated  by reference  in the  Registration
Statement or Prospectus).

    

         (d) Comfort Letter.  On the Commencement  Date and, if specified in any
Terms  Agreement,  the  Settlement  Date  therefor,  a  letter  dated  as of the
Commencement   Date  or  such  Settlement   Date,  as  the  case  may  be,  from
PricewaterhouseCoopers,  confirming that they are independent public accountants
within the meaning of the Securities  Act and the  Regulations  thereunder  with
respect to the Company and stating in effect that:

   

                  (i) In their opinion,  the consolidated  financial  statements
         and  supporting  schedules  audited by them which are included in BGE's
         Form 10-K,  which is  incorporated  by  reference  in the  Registration
         Statement  comply in form in all material  respects with the applicable
         accounting  requirements  of the  Securities  Act and  the  Regulations
         thereunder and the Exchange Act and the Regulations thereunder;

    
                                      
                  (ii) On the basis of procedures  specified in such letter (but
         not an audit in accordance with generally accepted auditing standards),
         including  reading the minutes of  meetings  of the  shareholders,  the
         Board of Directors and the Executive Committee of the Company since the
         end of the year  covered  by the Form 10-K as set  forth in the  minute
         books  through a  specified  date not more than five days  prior to the
         Commencement Date,  performing the procedures specified in Statement on
         Auditing  Standards  No.  71,  Interim  Financial  Information,  on the

                                       13

<PAGE>

         unaudited  interim  consolidated  financial  statements  of the Company
         incorporated by reference in the  Registration  Statement,  if any, and
         reading the latest available unaudited interim  consolidated  financial
         statements of the Company, and making inquiries of certain officials of
         the  Company  who have  responsibility  for  financial  and  accounting
         matters as to whether the latest  available  financial  statements  not
         incorporated by reference in the Registration Statement are prepared on
         a basis substantially  consistent with that of the audited consolidated
         financial  statements   incorporated  in  the  Registration  Statement,
         nothing  has come to their  attention  that has caused  them to believe
         that (1) any unaudited consolidated  financial statements  incorporated
         by reference in the Registration Statement do not comply in form in all
         material  respects with the applicable  requirements  of the Securities
         Act  and  the  Regulations  thereunder  and  the  Exchange  Act and the
         Exchange  Act  Regulations  thereunder  or any  material  modifications
         should be made to those unaudited consolidated financial statements for
         them to be in conformity with generally accepted accounting principles;
         (2) at the date of the latest available  balance sheet not incorporated
         by reference in the Registration  Statement there was any change in the
         capital stock, change in long-term debt or decrease in consolidated net
         assets or common  shareholders'  equity as  compared  with the  amounts
         shown in the latest  balance  sheet  incorporated  by  reference in the
         Registration  Statement, or for the period from the closing date of the
         latest income  statement  incorporated by reference in the Registration
         Statement to the closing date of the latest  available income statement
         read  by  them  there  were  any   decreases,   as  compared  with  the
         corresponding  period of the  previous  year,  in  operating  revenues,
         operating  income,  net income,  the ratio of earnings to fixed charges
         (measured on the most recent twelve month  period),  or in earnings per
         share of common stock  except in all  instances of changes or decreases
         that the Registration  Statement  discloses have occurred or may occur,
         or which are described in such letter;  or (3) at a specified  date not
         more than  five  days  prior to the  Commencement  Date,  there was any
         change  in the  capital  stock  or  long-term  debt of the  Company  as
         compared with amounts shown in the latest balance sheet incorporated by
         reference  in the  Registration  Statement,  except  in all  cases  for
         instances  of  changes or  decreases  that the  Registration  Statement
         discloses  have  occurred or may occur,  or which are described in such
         letter;

                                       
                  (iii)  Certain  specified  procedures  have  been  applied  to
         certain financial or other statistical  information (to the extent such

                                       14

<PAGE>

         information  was obtained  from the general  accounting  records of the
         Company) set forth or  incorporated  by  reference in the  Registration
         Statement and that such procedures  have not revealed any  disagreement
         between  the  financial  and  statistical  information  so set forth or
         incorporated  and the  underlying  general  accounting  records  of the
         Company, except as described in such letter; and

                  (iv)  shall  cover  such  other  matters  as the  Agent  shall
reasonably request.

         (e)  Certificate  as  to  No  Material  Adverse  Change,  Etc.  On  the
Commencement  Date and on each Settlement Date in respect of a Terms  Agreement,
there shall not have been, since the respective dates as of which information is
given in the Registration Statement and the Prospectus,  except as may otherwise
be stated therein or contemplated  thereby,  any material  adverse change in the
financial position or in the financial results of operations of the Company, and
the Agent  shall  have  received  a  certificate  of the  Company  signed by the
Chairman of the Board,  the Chief  Executive  Officer,  the Vice  Chairman,  the
President,  or any Vice President of the Company reasonably  satisfactory to the
Agent,  dated  as of the  Commencement  Date  or,  if  specified  in such  Terms
Agreement,  the Settlement Date therefor, as the case may be, to the effect that
to the best of their knowledge after  reasonable  investigation,  and relying on
opinions of counsel to the extent that legal matters are involved, (i) there has
been no such material adverse change,  (ii) the  representations  and warranties
contained in this Agreement are true and correct in all material  respects as of
the  Commencement  Date or such  Settlement  Date, as the case may be, (iii) the
Company has complied with all  agreements  and  satisfied all  conditions on its
part to be performed or satisfied under this Agreement or such Terms  Agreement,
as the case may be,  on or prior  to the  Commencement  Date or such  Settlement
Date, as the case may be, and (iv) no stop order suspending the effectiveness of
the  Registration  Statement has been issued and no proceedings for that purpose
have been initiated or threatened by the Commission.

         (f) Other Documents.  On the Commencement  Date, and on each Settlement
Date in  respect of a Terms  Agreement,  Counsel  for the Agent  shall have been
furnished with such  documents and opinions as they may  reasonably  require for
the purpose of enabling them to pass upon the issuance and sale of the Shares as

                                       15

<PAGE>

herein  contemplated  and  related  proceedings,  or in  order to  evidence  the
accuracy or completeness  of any of the  representations  or warranties,  or the
fulfillment of any of the  conditions,  herein  contained,  and all  proceedings
taken  by the  Company  in  connection  with the sale of the  Shares  as  herein
contemplated  shall be  satisfactory  in form and  substance  to the  Agent  and
Counsel for the Agent.

                                       
         (g) The Exchanges  shall have approved for listing upon official notice
of issuance, the Shares.

         In case any of the conditions  specified  above in this Section 7 shall
not have been fulfilled, this Agreement or any applicable Terms Agreement may be
terminated by the Agent upon mailing or delivering written notice thereof to the
Company.  Any such termination shall be without liability of either party to the
other party except as  otherwise  provided in Section 6(h) hereof and except for
any liability under Section 10 hereof.

         8. Suspension of Offers and Solicitations. At any time and from time to
time after the  Commencement  Date (except any such time that the Agent owns any
Shares  purchased as principal  that are held for resale to others in accordance
with the terms of this Agreement), the Company may in its sole discretion orally
instruct the Agent to suspend  solicitations  of offers to purchase,  and offers
for the sale of, the Shares as provided herein and in the Procedures.  If at any
such time, or at any time that the Company has  otherwise  notified the Agent to
suspend such  solicitations and offers under this Agreement,  there shall be any
sales of Shares by the  Company not yet settled  outstanding,  the Company  will
promptly  advise the Agent  whether  such sales may be settled  and  whether the
Prospectus as then in effect may be delivered in connection  with the settlement
of such sales.  If the Company  determines that such sales may not be settled or
that  such  Prospectus  may not be so  delivered,  the  Agent  will use its best
efforts to arrange for the  cancellation  of such sales,  but the Company  shall
have the sole  responsibility  for, and shall hold the Agent  harmless from, any
losses,  claims,  damages or liabilities (and expenses in connection  therewith)
that may result from the inability to make settlement of such sales.

         9.  Additional  Representations  and  Warranties  and Agreements of the
Company. The Company represents and warrants and agrees that:

         (a) Affirmation of Representations  and Warranties.  Each authorization
by the Company to the Agent to solicit offers to purchase the Shares as provided
in the Procedures shall be deemed to be an affirmation that the  representations
and  warranties of the Company  contained in this Agreement are true and correct
at the time of such authorization,  and an undertaking that such representations
and  warranties  will be true and correct at the time of delivery of and payment
for Shares sold pursuant to such  authorization as provided in Section 4 hereof,

                                       16

<PAGE>

in each  case as  though  made at and as of each  such  time  (except  that such
representations  and  warranties  shall be deemed to relate to the  Registration
Statement and the Prospectus as amended or supplemented to each such time).
                                   
        (b) From the time solicitation regarding the sale of the Shares is begun
until all of the Shares  have been  sold,  each time the  Company  (i) amends or
supplements  the  Registration  Statement  or  the  Prospectus  (other  than  in
reference  solely to prices of Shares) by means of a  post-effective  amendment,
sticker,  or supplement  but not by means of  incorporation  of  document(s)  by
reference  into the  Registration  Statement  or the  Prospectus;  (ii) files an
annual  report on Form 10-K under the Exchange  Act;  (iii) files its  quarterly
reports on Form 10-Q under the Exchange Act; and (iv) files a report on Form 8-K
under the Exchange Act (the date of filing each of the aforementioned  documents
is referred to as a "Representation  Date"); the Company shall furnish the Agent
(but  in the  case  of  (iv)  above  only  if  requested  by the  Agent)  with a
certificate of the Chairman of the Board, the Chief Executive Officer,  the Vice
Chairman,  President  or  any  Vice  President  and  a  principal  financial  or
accounting  officer of the Company,  in form  satisfactory  to the Agent, to the
effect that on the  Representation  Date, to the best of their  knowledge  after
reasonable  investigation  and  relying  upon  opinions of counsel to the extent
legal  matters are  involved,  (i) the  representations  and  warranties  of the
Company in this  Agreement are true and correct in all material  respects;  (ii)
the Company has complied with all agreements and satisfied all conditions on its
part to be performed or  satisfied  hereunder at or prior to the  Representation
Date;  (iii) no stop order  suspending  the  effectiveness  of the  Registration
Statement  or of any part  thereof has been issued and no  proceedings  for that
purpose have been instituted or are  contemplated  by the  Commission;  and (iv)
subsequent  to the date of the most  recent  financial  statements  set forth or
incorporated by reference in the Prospectus,  there has been no material adverse
change in the financial  position or in the  financial  results of operations of
the Company,  except as set forth in or  contemplated  by the  Prospectus  or as
described in such certificate.

        (c) From the time solicitation regarding the sale of the Shares is begun
until all of the Shares have been sold, at each  Representation Date referred to
in  Section  9(b) (i) or (ii)  and,  only if  requested  by the  Agent,  at each
Representation Date referred to in Section 9(b) (iii) or (iv), the Company shall
concurrently furnish the Agent with a written opinion or opinions of counsel for
the Company,  dated the Representation  Date or the date of such filing, in form
satisfactory to the Agent,  to the effect set forth in Section 7(b) hereof,  but
modified,  as  necessary,  to  relate  to the  Registration  Statement  and  the

                                       17

<PAGE>

Prospectus as then amended or supplemented;  provided,  however, that in lieu of
such opinion, counsel may furnish the Agent with a letter to the effect that the
Agent may rely on a prior opinion  delivered  under Section 7(b) or this Section
9(c) to the same extent as if it were dated the date of such letter (except that
statements in such prior  opinion shall be deemed to relate to the  Registration
Statement and the Prospectus as amended or supplemented  at such  Representation
Date).

        (d) From the time solicitation regarding the sale of the Shares is begun
until all of the Shares have been sold, at each  Representation Date referred to
in  Section  9(b) (i) or (ii)  and,  only if  requested  by the  Agent,  at each
Representation  Date referred to in Section 9(b) (iii) or (iv), but in each case
only if such documents referred to in Section 9(b) include additional  financial
information,  the Company  shall cause  PricewaterhouseCoopers  concurrently  to
furnish the Agent with a letter,  addressed jointly to the Company and the Agent
and  dated  the  Representation  Date or the  date of such  filing,  in form and
substance  satisfactory  to the Agent,  to the effect set forth in Section  7(d)
hereof but modified to relate to the  Registration  Statement and the Prospectus
as amended or supplemented at such Representation Date, with such changes as may
be  necessary  to  reflect  changes  in  the  financial   statements  and  other
information  derived  from the  accounting  records  of the  Company;  provided,
however,  that if the  Registration  Statement or the  Prospectus  is amended or
supplemented  solely to  include  financial  information  as of and for a fiscal
quarter,  PricewaterhouseCoopers  may  limit  the  scope of such  letter  to the
unaudited  financial  statements included in such amendment or supplement unless
there is  contained  therein  any other  accounting,  financial  or  statistical
information that, in the reasonable  judgment of the Agent, should be covered by
such letter,  in which event such letter shall also cover such other information
and procedures as shall be requested by the Agent.

          10.  Indemnification.  (a)  Indemnification  of the Agent. The Company
will  indemnify  and  hold  harmless  the  Agent  and each person,  if any, who
controls  the  Agent within the  meaning  of Section 15 of the  Securities  Act
as follows:

                  (i) against  any and all loss,  liability,  claim,  damage and
         expense whatsoever, as incurred, arising out of any untrue statement or
         alleged   untrue   statement  of  a  material  fact  contained  in  the
         Registration  Statement or documents  incorporated by reference therein
         (or  any  amendment  thereto),  of the  omission  or  alleged  omission
         therefrom of a material fact required to be stated therein or necessary
         to make the  statements  therein not  misleading  or arising out of any
         untrue  statement  or  alleged  untrue  statement  of a  material  fact

                                       18

<PAGE>

         contained in any related preliminary prospectus, the Prospectus (or any
         amendment  or  supplement  thereto) or the  documents  incorporated  by
         reference  therein,  or the omission or alleged omission therefrom of a
         material fact necessary in order to make the statement therein,  in the
         light of the circumstances  under which they were made, not misleading,
         unless  such  untrue  statement  or  omission  or such  alleged  untrue
         statement or omission was made in reliance upon and in conformity  with
         written information furnished to the Company by the Agent expressly for
         use in the  Registration  Statement (or any amendment  thereto) or such
         preliminary   prospectus  or  the   Prospectus  (or  any  amendment  or
         supplement thereto);  provided,  however,  that any such indemnity with
         respect to a Prospectus shall not inure to the benefit of the Agent (or
         of any  person  controlling  the  Agent)  on  account  of  any  losses,
         liabilities,  claims or damages  arising from the sale of Shares to any
         person if any amendments or supplements to such  Prospectus  shall have
         been  furnished  to the Agent on a timely  basis to permit the Agent to
         send or give to such person, with or prior to the written  confirmation
         of such sale, a copy of such amended or supplemented Prospectus, except
         the  documents  incorporated  by  reference  therein,  and  the  untrue
         statement or omission of a material fact  contained in such  Prospectus
         and giving  rise to such  losses,  liabilities,  claims or damages  was
         corrected in such amended or  supplemented  Prospectus  (including  the
         documents incorporated by reference therein);

                  (ii) against any and all loss,  liability,  claim,  damage and
         expense whatsoever,  as incurred, to the extent of the aggregate amount
         paid in settlement of any litigation, commenced or threatened or of any
         claim whatsoever  based upon any such untrue statement or omission,  or
         any such alleged untrue  statement or omission,  if such  settlement is
         effected with the written consent of the Company; and

                  (iii) against any and all expense whatsoever,  as incurred, in
         investigating, preparing or defending against any litigation, commenced
         or  threatened,  or any claim  whatsoever  based  upon any such  untrue
         statement  or  omission,  or  any  such  alleged  untrue  statement  or
         omission,  to the extent that any such expense is not paid under clause
         (i) or (ii) above.

         (b) Indemnification of Company.  The Agent agrees to indemnify and hold
harmless  the  Company,  its  directors,  each of its  officers  who  signed the
Registration Statement, and each person, if any, who controls the Company within
the meaning of Section 15 of the Act against any and all loss, liability, claim,

                                       19

<PAGE>

damage and expense described in the indemnity contained in Section 10(a) hereof,
as incurred, but only with respect to untrue statements or omissions, or alleged
untrue  statements  or  omissions,  made in the  Registration  Statement (or any
amendment  thereto) or any  preliminary  prospectus  or the  Prospectus  (or any
amendment or supplement thereto) in reliance upon and in conformity with written
information  furnished  to the  Company  by the Agent  expressly  for use in the
Registration Statement (or any amendment thereto) or such preliminary prospectus
or the Prospectus (or any amendment or supplement thereto).

         (c) General.  Each  indemnified  party shall give prompt notice to each
indemnifying  party of any  action  commenced  against  it in  respect  of which
indemnity  may be sought  hereunder,  but  failure so to notify an  indemnifying
party shall not relieve it from any  liability  except to the extent that it has
been  prejudiced  in any material  respect by such failure or from any liability
that it may have to such  indemnified  party  otherwise  than on account of this
indemnity agreement.  In case any such action is brought against any indemnified
party, and it notifies the indemnifying party of the commencement  thereof,  the
indemnifying  party will be entitled to  participate  therein and, to the extent
that it may wish, jointly with any other indemnifying party similarly  notified,
to assume the defense  thereof,  with counsel  satisfactory to such  indemnified
party (who may,  with the consent of the  indemnified  party,  be counsel to the
indemnifying  party),  and  after  notice  from the  indemnifying  party to such
indemnified  party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party  will not be liable to such  indemnified  party  under  this
Section  for  any  legal  or  other  expenses   subsequently  incurred  by  such
indemnified  party in connection  with the defense thereof other than reasonable
costs of investigation.

         (d) If recovery is not available  under the  foregoing  indemnification
provisions  of this Section 10 for any reason  other than as specified  therein,
the parties entitled to  indemnification  by the terms thereof shall be entitled
to  contribution  to  liabilities  and  expenses,  except  to  the  extent  that
contribution is not permitted under Section 11(f) of the Act. In determining the
amount of contribution to which the respective parties are entitled, there shall
be considered the relative  benefits received by each party from the offering of
the Shares  (taking  into  account the portion of the  proceeds of the  offering
realized by each),  the parties'  relative  knowledge and access to  information
concerning  the  matter  with  respect  to which  the claim  was  asserted,  the
opportunity  to correct and prevent any  statement  or  omission,  and any other
equitable  considerations  appropriate under the circumstances.  The Company and

                                       20

<PAGE>

the Agent and such  controlling  persons agree that it would not be equitable if
the  amount  of such  contribution  were  determined  by pro rata or per  capita
allocation (even if the Agent and such  controlling  persons were treated as one
entity for such purpose). Notwithstanding the provisions of this subsection (d),
no Agent or controlling person shall be required to make contribution  hereunder
which in the  aggregate  exceeds the total public  offering  price of the Shares
distributed  to the public  through it pursuant to this Agreement or upon resale
of Shares  purchased by it from the Company,  less the  aggregate  amount of any
damages which the Agent or such  controlling  person has otherwise been required
to pay in respect to the same claim or  substantially  similar claim.  No person
guilty of fraudulent  misrepresentation  (within the meaning of Section 11(f) of
the Securities  Act) shall be entitled to  contribution  from any person who was
not guilty of such fraudulent misrepresentation.

   

         (e)  Confirmation  of Certain  Statements.  The Agent confirms that the
statements in the last paragraph under the caption "Plan of Distribution" in the
Prospectus are correct and were furnished in writing to the Company by the Agent
for inclusion in the Prospectus.

    
                                      
         11.  Survival of  Representations  and Warranties and  Agreements.  The
indemnity  and  other  agreements  of the  Company  and the Agent  contained  in
Sections  6(h) and 10  hereof  and the  representations,  warranties  and  other
statements  of the  Company set forth in this  Agreement  or made by the Company
pursuant to this Agreement shall remain in full force and effect,  regardless of
(a)  any  termination  of  this  Agreement  or  any  Terms  Agreement,  (b)  any
investigation  made  by or on  behalf  of the  Agent  or any of its  controlling
persons or by or on behalf of the Company or any of its  officers,  directors or
controlling  persons  and (c)  acceptance  of delivery of and payment for Shares
sold hereunder.


         12.      Termination.      (a)    Termination of this Agreement.  This 
Agreement  may  be   terminated  at any time  by either  party  hereto  upon the
giving of written  notice of  such  termination  to  the  other   party   hereto
effective at the close of business on the date such notice is received.


         (b) Termination of a Terms  Agreement.  The Agent may, by notice to the
Company,  terminate  a Terms  Agreement  if, at any time  after the date of this
Agreement and at or prior to the Settlement Date in respect  thereof,  (i) there
shall have occurred any change or any development involving a prospective change
not contemplated by the Prospectus in or affecting  particularly the business or
properties  of the  Company  which,  in the  reasonable  judgment  of the Agent,
materially  impairs the  investment  quality of the Shares,  or (ii)  trading in
securities generally on the New York Stock Exchange shall have been suspended or

                                       21

<PAGE>

limited,  other than a temporary suspension in trading to provide for an orderly
market,  or minimum prices have been  established  on such  Exchange,  a banking
moratorium  shall  have  been  declared  either  by New York  State  or  Federal
authorities  or there shall have occurred an outbreak or material  escalation of
hostilities  or other  calamity or crisis,  the effect of which on the financial
markets of the  United  States is such as to make it, in the  Agent's  judgment,
impracticable to market the Shares.


         (c) General.  In the event of any  termination  under  Section 12(a) or
12(b)  hereof,  neither party will have any liability to the other party hereto,
except  that (i) the  Agent  shall  be  entitled  to any  commission  earned  in
accordance with Section 3(c) hereof,  (ii) if at the time of termination (A) the
Agent  shall own any Shares  purchased  pursuant to a Terms  Agreement  with the
intention  of  reselling  them or (B) an offer to purchase any of the Shares has
been  accepted by the Company but the time of delivery to the  purchaser  or his
agent of the Shares relating  thereto has not occurred,  the covenants set forth
in Sections 6 and 9 hereof  shall  remain in effect  until such Shares have been
resold or  delivered,  as the case may be and (iii) the  covenants  set forth in
Sections  6(f) and 6(h) hereof,  the indemnity  and  contribution  agreement set
forth in Section 10 hereof and the provisions of Sections 11 and 16 hereof shall
remain in effect.

   
         13. Notices. Except as otherwise specifically provided herein or in the
Procedures,  all  statements,   instructions,  requests,  notices  and  advances
hereunder and under any applicable  Terms  Agreement  shall be in writing (or by
telephone or telefax if subsequently  confirmed in writing), and shall be deemed
to have been duly given if mailed, delivered or transmitted by any standard form
of telecommunication to (a) in the case of the Agent, Salomon Smith Barney Inc.,
390 Greenwich Street,  New York, New York 10013,  Attention:  Robert G. Leonard,
Telefax  No.:  212-816-7949,  with,  in the  case of  instructions  given by the
Company  pursuant  to  Section  2(a) or 8  hereof,  and  (b) in the  case of the
Company,  Constellation  Energy Group, Inc., 39 W. Lexington Street,  Baltimore,
Maryland,  21201,  Attention:  T.  E.  Ruszin,  Jr.,  Treasurer,   Telefax  No.:
410-234-5367.

    

         14.  Parties.  This Agreement and any applicable  Terms Agreement shall
inure  solely to the  benefit of the  Company  and the Agent and,  to the extent
provided in Sections 10 and 11 hereof, to any officer or director of the Company
or to any person who  controls  the Company or the Agent,  and their  respective
successors.  No other person,  partnership,  association  or  corporation  shall
acquire  or have any right  under or by virtue  of this  Agreement  or any Terms
Agreement.  The term "successors"  shall not include any purchaser of any Shares
merely because of such purchase.  The respective  rights and  obligations of the
Company and the Agent  hereunder may not be assigned,  transferred or contracted
to another.

                                       22

<PAGE>


         15. Arm's Length  Dealing.  This  Agreement  and any  applicable  Terms
Agreement  have  been  negotiated  at arm's  length  between  the  Agent and the
Company,  which  regularly  issues and sells  securities  in the public  markets
through investment  bankers,  and the relationship  created hereby or thereby is
not intended to be one of customer and member as the term  "customer" is used in
the  provisions  pertaining  to the  protection  of customers  of the  articles,
bylaws, rules,  regulations and policies of the NYSE or the National Association
of Securities Dealers, Inc.
                                       
         16.  Governing  Law. This  Agreement and any Terms  Agreement  shall be
governed by and construed in  accordance  with the laws of the State of New York
without regard to principles of conflict of law.

         17.  Captions.  Captions to Sections of this Agreement are included for
convenience  of reference only and shall not constitute a part of this Agreement
for any other purpose or in any way affect the meaning of any provisions of this
Agreement.

                                       23

<PAGE>

         If the  foregoing  is in  accordance  with  your  understanding  of our
agreement, please sign and return to the Company a counterpart hereof, whereupon
this  instrument  along with all  counterparts  will become a binding  agreement
between the Agent and the Company in accordance with its terms.

                                      
                                                Very truly yours,
   

                                                CONSTELLATION ENERGY GROUP, INC.

    

                                                By                            
                                                Title:  Vice President





Confirmed, accepted and agreed, 
as of the date first above written:

   

SALOMON SMITH BARNEY INC.

    

By                         
   Title:

                                       24

<PAGE>



                                                                      EXHIBIT A
   

                        CONSTELLATION ENERGY GROUP, INC.
                        _____________ Shares Common Stock
                           Continuous Offering Program
           Volume and Pricing Parameters for Offers and Solicitations

    
                                                              [Date]


   

Salomon Smith Barney Inc.
390 Greenwich Street, 5th Floor
New York, New York 10013

    


Ladies and Gentlemen:

         The Company hereby instructs you to commence solicitations of offers to
purchase,  and offers for the sale of, up to an additional ___________ shares of
the  Company's  Common Stock,  in accordance  with the terms of the Sales Agency
Agreement, at prices not less than $_____ per share, or such higher prices as we
verbally communicate to you.

   

         In addition, the sales price must be equal to or greater than the prior
day's closing price on the New York Stock Exchange less $0.50.

    

         Including the above mentioned ________ shares, __________ shares remain
to be issued under the Continuous Offering Program.

         The Company  reserves the right,  in its sole  discretion,  to instruct
you, at any time after the date hereof to suspend such  solicitations  and sales
for any period of time or permanently  in accordance  with the provisions of the
Sales Agency Agreement.

   

                                               CONSTELLATION ENERGY GROUP, INC.

    

                                               By:                              
                                                             Vice President


                                       1
<PAGE>




                                                                      EXHIBIT B
   



                        CONSTELLATION ENERGY GROUP, INC.

                           [ ] Shares of Common Stock

    

                                 Terms Agreement


                                                                       [Date]
   

Salomon Smith Barney Inc.
390 Greenwich Street
New York, NY  10013

    


Ladies and Gentlemen:
   

         Pursuant  to the terms  and  conditions  set forth in the Sales  Agency
Agreement, dated __________, 1999, between Constellation Energy Group, Inc. (the
"Company") and you (the "Agent") and the additional  terms set forth below,  you
are to purchase _______ shares of the Company's Common Stock (the "Shares").

    

         Purchase Price per Share:

         Public Offering Price per Share:

         Settlement Date and Time:

         Form of Settlement:

         Additional Terms:

[If agreed to by you and the Company prior to the execution hereof:  the Company
will not,  between  the date hereof and the  Settlement  Date and Time set forth
above, without your prior consent, offer or sell, or enter into any agreement to
sell,  any of its  Common  Stock,  except  pursuant  to the  Company's  Dividend
Reinvestment and Stock Purchase Plan and Employee Savings Plan.]

[Indicate  whether  the  Company  authorizes  you to utilize a selling or dealer
group in connection with the resale of the Shares as required by Section 2(b) of
the Sales Agency Agreement.]


                                       2

<PAGE>

[Indicate  whether the legal opinion,  accountant's  letter and/or the officer's
certificate  described in Sections 7(b), 7(c), 7(d) and 7(e),  respectively,  of
the Sales Agency Agreement will or will not be required.]

   



                                             CONSTELLATION ENERGY GROUP, INC.


                                             By______________________________
                                             Title:


Confirmed, accepted, and agreed, as of the date first above written:

Salomon Smith Barney Inc.


By_____________________________________
         Title:


    


<PAGE>

                                                                      EXHIBIT C

   


                        CONSTELLATION ENERGY GROUP, INC.
    
                             Common Stock Procedures



   


          Pursuant to the Sales Agency  Agreement  dated as of __________,  1999
(the  "Sales  Agency  Agreement") between  Constellation Energy Group, Inc. (the
"Company")  and  Salomon  Smith  Barney  Inc.,  as  exclusive  sales  agent (the
"Agent"),  up to ____________  shares of the  Company's  Common Stock  are being
offered  and sold.   Capitalized  terms used  herein and  not otherwise  defined
herein shall have the meanings ascribed to them in the Sales Agency Agreement.

    

         The  Shares have  been   registered  with   the  Commission  under  the
Securities   Act.  Harris  Trust  and  Savings Bank  acts as transfer  agent and
registrar for the Common Stock  (together  with  any  successor  transfer  agent
or registrar, the "Transfer Agent").

         Administrative  procedures  and  specific  terms  of the  offering  are
explained   below.    Administrative   responsibilities,   accountable  document
control  and   record-keeping  responsibilities  will  be   performed   by   the
Company's  Finance   Department.   The  Company   will   advise   the  Agent  in
writing  of  those  persons  handling administrative responsibilities  with whom
the Agent is to communicate regarding offers to purchase Shares and the
details of their delivery.

   I.  Acceptance of     The Company will have the sole right to give orders  to
       Orders;           sell,   and   accept   offers  to   purchase,   Shares.
       Authorized        Instructions  regarding offers and sales of Shares will
       Persons:          be given for the Company by D. A. Brune,  T. E. Ruszin,
                         Jr.,  or  by  another   specifically  named  authorized
                         representative  of the Company.  Such instructions will
                         be  accepted at the Agent by Robert G.  Leonard,  or by
                         another specifically named authorized representative of
                         the Agent.  Offers and sales of the Shares will be made
                         under  volume  and  price   parameters  and  with  such
                         commissions  as agreed upon between the Company and the
                         Agent.  Offers  not  complying  with such terms will be
                         communicated   telephonically   by  the  Agent  to  the
                         authorized  representative  of the  Company,  including
                         specific  prices on "block"  transactions.  The Company
                         may reject any offer to purchase  Shares in whole or in
                         part. The Agent may reject any offer to purchase Shares
                         in whole or in part in the  reasonable  exercise of its
                         discretion.

                                       1

<PAGE>


   II. Settlement:       Settlement will occur on the third  Business  Day after
                         the Trade  Date.  Delivery  of Shares  will take  place
                         through  the  book-entry  processing of the  Depository
                         Trust Company ("DTC") DWAC system  (deposit  withdrawal
                         at custodian). Another time, place or method of settle-
                         ment (e.g., same day for "cash" sales) may be specified
                         if  mutually  agreed  upon  in  writing  by  authorized
                         authorized  representatives  of  the  Company  and  the
                         Agent.


III. Denominations:      Since  delivery of Shares will take place through DWAC,
                         a singe certificate  evidencing  the  Shares  for  each
                         day's  transactions will be registered in the  name  of
                         DTC  or a  nominee  of  DTC.  The  Transfer  Agent will
                         hold all certificates.  


  IV. Details for        With  regard to Shares sold by the Company  through the
      Settlement:        Agent, on any day, the Agent will advise the Company by
                         telephone of  the following  key  details of any trans-
                         actions that take place by the end of such day:
      
                         1.  The number of Shares sold.

                         2.  The prices at which Shares were sold.

                         3.  The commissions payable to the Agent by the
                             Company.

                         4.  Other  applicable  charges,  such as  transfer 
                             taxes  and  fees of the Commission.

                         5.  The net proceeds payable to the Company.

                         6.  The Settlement Date or Dates.

                         The Agent will  confirm the  foregoing  key  details by
                         facsimile transmission  within  one Business Day  after
                         the Trade Date (See Part V below).

                         After receiving the  key details  by  facsimile  trans-
                         mission  from  the  Agent, the  Company  will  promptly
                         notify the  Transfer  Agent in writing of the number of
                         Shares  sold  and  instruct  the Transfer Agent, on the
                         Settlement Date, to accept the DWAC transaction for the
                         settlement of the Shares sold.

                                       2

<PAGE>

                         On  the Settlement Date, the following events will take
                         place:

                         1.  Within  the  Company's  brokerage   account at  the
                             Agent, a trade will settle representing the Shares
                             sold and the net  proceeds  payable to the Company.

                         2.  The  Agent  will initiate  a  DWAC  transaction  to
                             credit  the  Shares   sold  to  it DTC  participant
                             account.

                         3.  The  Transfer Agent will  subsequently  accept  the
                             DWAC transaction for the appropriate number of such
                             Shares, per written  instructions from  the Company
                             as noted above.

                         4.  Simultaneously with the Shares  being  credited  to
                             the  Agent's DTC  participant  account,  the  Agent
                             will  release  from the Company's brokerage account
                             at the Agent the net proceeds  from the sale of the
                             Shares.

                         5.  The Agent will wire  transfer  the net proceeds  as
                             the  Company  may  direct.

                        The Company will notify the NYSE quarterly of the number
                        of outstanding shares and give the NYSE any other notice
                        of the issue of Shares as may be  required by the NYSE.
   

  V. Confirmation:      For  each  order to  purchase  Shares  solicited  by the
                        Agent and accepted by or on behalf of the  Company,  the
                        Agent  will  issue a written  confirmation  by facsimile
                        transmission within one  Business  Day  after  th  Trade
                        Date to Constellation Energy Group,Inc., 39 W. Lexington
                        Lexington Street,  Room 800, Baltimore,  Maryland 21201,
                        Attention: T. E. Ruszin, Jr.Treasurer containing the key
                        details listed above.

    

  VI. Delivery of       The Company will deliver (through DWAC) the Shares  sold
      Shares:           to the Agent only against payment therefor as  specified
                        in Section 4 of the  Sales Agency Agreement  and  as set
                        forth in "Details for Settlement" under Part IV of these
                        Procedures.  See "Delivery of Prospectus"  under Part IX
                        of these  Procedures as to the  requirement to deliver a
                        current Prospectus with sale transactions.

                                       3

<PAGE>

  VII. Fails:           Failure to make payment when due will be subject to the 
                        regulations  and  rules  of the NYSE, as applicable, and
                        the  provisions  of  Section  2(a)  of  the Sales Agency
                        Agreement.

 VIII. Suspension of    The  Company  may   instruct   the  Agent  to  commence 
       Solicitation,    or  suspend solicitations  of  offers to  purchase,  and
       Amendment or     offers for the sale of, Shares at any time in accordance
       Supplement:      with the Sales Agency  Agreement.  Upon  receipt of such
                        instructions  to  suspend,  the  Agent  will immediately
                        suspend such activities  until such time  as the Company
                        has  advised  the Agent  that  such  activities  may  be
                        resumed.  If the Company  decides to amend or supplement
                        the  Registration  Statement or the  Prospectus, it will
                        promptly advise  the  Agent  and will furnish  the Agent
                        with the proposed amendment or supplement as provided in
                        the Sales  Agency  Agreement.  In  the event that at the
                        time the  Agent  suspends  such  activities  there shall
                        be any sales  not  yet  settled outstanding, the Company
                        will, consistent with its  obligations  under  the Sales
                        Agency Agreement, promptly advise the Agent whether such
                        sales  may  be  settled  and   whether  copies  of   the
                        Prospectus as in effect at the  time  of the  suspension
                        may be  delivered  in  connection with the settlement of
                        such sales.

                        Subject to the preceding paragraph, the Agent shall have
                        the right in its sole  discretion,  upon  notice thereof
                        to  the  Company,  to  commence  or  suspend at any time
                        offers to sell and  solicitations of offers  to buy the
                        Shares.


    IX. Delivery of     Prior to any auction market sales of Shares on the NYSE,
        Prospectus      copies of  the Prospectus as  most  recently  amended or
                        supplemented  must be filed with such  Exchange pursuant
                        to Rule 153 of the  Regulations under the Act. A copy of
                        the  Prospectus as most recently amended or supplemented
                        must also accompany each written  confirmation of a sale
                        of Shares by the Agent to a customer of the Agent, or of
                        a sale of Shares by the Agent as principal, in each case
                        otherwise than in the  auction  market.  As used  above,
                        the  term  Prospectus  does  not  include  any documents
                        incorporated by reference therein.

                                       4

<PAGE>

    X.  Payment of      The Agent will send a written confirmation by  facsimile
        Selling         transmission within  one  Business  Day after  the Trade
        Commissions,    Date to the Company  with  respect to  each  transaction
        Transfer Taxes  setting forth the selling commissions,  transfer  taxes 
        and Fees        and fees of the Commission payable in connection  there-
        of the          with.  Such amounts are obligations of the  Company  and
        Commission      will be "netted" against proceeds paid to the Company on
                        the applicable Settlement Date.


    XI. Advertising     The Company will  determine with the Agent the amount of
        Costs:          advertising that  may be  appropriate  in  offering  the
                        Common Stock.  Advertising expenses will be paid by the 
                        Company.

                                       5



                                                                       Exhibit 4

                       (Form of Common Stock Certificate)

                          (Form of Face of Certificate)

      NUMBER                                                            SHARES
CEG   ________                                                        _________
      COMMON                                                            COMMON

                        CONSTELLATION ENERGY GROUP, INC.



INCORPORATED  UNDER THE LAWS OF THE STATE OF MARYLAND.  THIS  CERTIFICATE MAY BE
PRESENTED FOR TRANSFER IN NEW YORK CITY, CHICAGO, IL OR BALTIMORE, MD.

                                                           CUSIP ______________
(SEE REVERSE FOR KEY TO ABBREVIATIONS)

This Certifies that _____________________ is the owner of ____________ SHARES
WITHOUT PAR VALUE OF THE COMMON STOCK OF Constellation Energy Group, Inc.,
full-paid and non-assessable, transferable in person or by attorney on surrender
of this certificate properly endorsed. This certificate and the shares
represented hereby are issued and shall be held subject to all the provisions of
the Charter of the corporation as amended and supplemented, a copy of which is
on file with the Transfer Agent. This certificate is not valid until
countersigned and registered by the Transfer Agent and Registrar.

         Witness the seal of the corporation and the facsimile signatures of its
duly authorized officers.

Dated: ____________

         /s/ David A. Brune                                /s/ C. H. Poindexter
      -------------------------                      --------------------------
              SECRETARY                                        PRESIDENT

                        CONSTELLATION ENERGY GROUP, INC.
                               CORPORATE SEAL 1995
                                    MARYLAND

COUNTERSIGNED AND REGISTERED:
Constellation Energy Group, Inc.
TRANSFER AGENT AND REGISTRAR


BY________________________       AUTHORIZED SIGNATURE


<PAGE>


                        (Form of Reverse of Certificate)


                        CONSTELLATION ENERGY GROUP, INC.

         The corporation  will  furnish to  any  shareholder  upon  request  and
without charge a full statement of the designations,  preferences,  limitations,
and relative rights of the shares of each class of stock authorized to be issued
and,  with  respect to the classes of stock which may  be issued in series,  the
variations  in the relative rights and  preferences  between  the shares of each
such series, so far as  the  same  have  been  fixed  and  determined,  and  the
authority of  the  Board of Directors  to fix and determine the relative  rights
and preferences of subsequent series.  Such request may be made to the Treasurer
of the  Corporation  at its  principal  office or to the Transfer Agent.

                                  ------------

KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN OR DESTROYED THE
CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A
REPLACEMENT CERTIFICATE.
                                 --------------

         The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

         TEN COM           -   as tenants in common
         TEN ENT           -   as tenants by the entireties
         JT TEN            -   as joint tenants with right of survivorship and 
                               not as tenants common
         TOD               -   transfer on death

         UNIF GIFT MIN ACT -   ___________ Custodian      _________
                                (Cust)                     (Minor)


                  under Uniform Gifts to Minors Act______________
                                                       (State)

         UNIF TRF MIN ACT  -   ___________ Custodian     __________
                                 (Cust)                  (Minor)
                                          (until age _____ )


                  under Uniform Transfers to Minor Act ___________
                                                         (State)

Additional abbreviations may also be used though not in the above list.

                                       2
<PAGE>



For value received, ___________ hereby sell, assign and transfer unto


[please insert social security or other
identifying number of assignee]
- -------------------------------

- ----------------------------------------------------------------------
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)
- ----------------------------------------------------------------------

_______________________________________________________________shares
of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint ___________________________ Attorney to
transfer the said stock on the books of the within named Corporation with full
power of substitution in the premises.

Dated _______________


         -----------------------------------------
         NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME
         AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR,
         WITHOUT ALTERATION OR ENLARGEMENT, OR ANY CHANGE WHATEVER.


Signature(s)Guaranteed



By _________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO
S.E.C. RULE 17Ad-15.

                                     - 3 -





        DONNA M. LEVY                         Baltimore Gas and Electric Company
        Counsel                               P. O. Box 1475
                                              Baltimore, MD  21203-1475
                                              410 234-5598   FAX 410  234-7168
                                              [email protected]
 

                                                                   Exhibit 5 (a)



March 25, 1999


Constellation Energy Group, Inc.
c/o David A. Brune
39 W. Lexington Street
Baltimore, MD 21201

Gentlemen:

         This opinion is provided in connection with Post-Effective Amendment
No. 1 ("Post-Effective Amendment") filed by Constellation Energy Group, Inc.
("Constellation Energy") to the Registration Statements filed by Baltimore Gas
and Electric Company ("BGE") with the Securities and Exchange Commission
("Commission") under the Securities Act of 1933 (the "Securities Act").
Registration Statement No. 33-57658 filed by BGE regards, among other things,
the proposed issuance of up to 2,000,000 shares of BGE common stock and
Registration Statement No. 333-59601 filed by BGE regards, among other things,
the proposed issuance of up to 3,000,000 shares of BGE common stock
(collectively, the "Common Stock").

         Pursuant to an Agreement and Plan of Share Exchange dated February 19,
1999, between Constellation Energy and BGE, upon the occurrence of certain
events all of the outstanding common stock of BGE will be exchanged, on a
one-for-one basis, for common stock of Constellation Energy. As a result of the
share exchange, Constellation Energy will become a successor to BGE and will be
authorized to succeed BGE as a registrant of its various effective registration
statements filed with the Commission. In anticipation of the consummation of the
share exchange, Constellation Energy is filing this Post-Effective Amendment in
regard to its Common Stock to be offered upon effectiveness of the share
exchange.

         I am an attorney in the Corporate Unit of the legal department of BGE.
BGE is a shareholder of Constellation Energy, and Constellation Energy has
requested that I provide this opinion. Constellation Energy is a Maryland
corporation. In connection with this opinion I, together with other attorneys
assisting me, have considered, among other things: (1) the current articles of
incorporation of Constellation Energy, as amended, and a form of amended and
restated articles of incorporation of Constellation Energy (the "Charter" ) to
be filed and effective upon consummation of the share exchange; (2) the current
by-laws of Constellation Energy, and a form of by-laws of Constellation Energy
to be adopted effective upon consummation of the share exchange (the "By-laws");
(3) the corporate proceedings for the approval and issuance of the Common Stock;
(4) the Post-Effective Amendment; (5) the agency agreement (including the
standard purchase provisions) filed as an exhibit to the Registration Statement
(the "Purchase Agreement"); (6) the provisions of the Public Utility Holding
Company Act of 1935 (the "1935 Act"); and (7) such other documents,
transactions, and matters of law as we deemed necessary in order to render this
opinion.


<PAGE>

         This opinion is subject to: (1) the share exchange becoming effective
and the filing with the appropriate State authority, and effectiveness of,
Constellation Energy's Charter; (2) the proper adoption by Constellation
Energy's Board of Directors of the By-Laws; and (3) the Registration Statement
becoming effective under the Securities Act of 1933.

         It is my opinion that when there has been compliance with the
Securities Act and the applicable state securities laws, the Common Stock to be
sold by Constellation Energy, when issued, delivered, and paid for in the manner
described in the form of Purchase Agreement will be legally issued, fully paid
and nonassessable.

         I express no opinion as to the law of any jurisdiction other than the
law of the State of Maryland and the law of the United States of America. The
opinion expressed herein concerns only the effect of the law (excluding the
principles of conflicts of law) of the State of Maryland and the United States
of America as currently in effect.

         This opinion is provided to you solely in connection with the filing of
the Post-Effective Amendment and may not be relied upon by, or quoted to, any
other person or entity, in whole or in part, without my prior written consent.

         I hereby consent to the filing of this opinion as an exhibit to the
Post-Effective Amendment and to the references to me in the Post-Effective
Amendment (and any amendments thereto) or the prospectus constituting a part of
the Post-Effective Amendment (and any amendments or supplements thereto). In so
doing, I do not admit that I am in the category of persons whose consent is
required under Section 7 of the Securities Act or the rules and regulations of
the Commission promulgated thereunder.

                                                     Very truly yours,

                         

                                                     /s/ Donna M. Levy
                                                     ------------------
                                                         Donna M. Levy




                                                                  Exhibit 23(a)








                       CONSENT OF INDEPENDENT ACCOUNTANTS


                                -----------------




     We consent to the  incorporation by reference in  Post-Effective  Amendment
     No. 1 to the Registration  Statements (File Nos. 33-57658 and 333-59601) on
     Form S-3 covering  3,731,600  shares of  Constellation  Energy Group,  Inc.
     Common  Stock  (without  par value)  pursuant  to the  Continuous  Offering
     Program (the  "Registration  Statement")  of our report  dated  January 15,
     1999, on our audits of the consolidated  financial statements and financial
     statement  schedule  included on Form 10-K of  Baltimore  Gas and  Electric
     Company and  Subsidiaries  as of December 31, 1998 and 1997 and for each of
     the three years in the period ended December 31, 1998.

     We also consent to the reference to our firm under the caption "Experts" in
     this Registration Statement.




                                                  /s/ PricewaterhouseCoopers LLP
                                                     Pricewaterhouse Coopers LLP

    Baltimore, Maryland
    March 23, 1999




                                                                      Exhibit 24

                         CONSTELLATION ENERGY GROUP, INC.

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS,  that each of the undersigned directors and
officers of  Constellation  Energy Group,  Inc. hereby  constitutes and appoints
David A.  Brune  and  Thomas E.  Ruszin,  Jr.  each of them his true and  lawful
attorneys and agents,  with full power of substitution and  resubstitution,  for
him and in his name,  place and stead,  to do any and all acts and things and to
execute, in his name any and all instruments which said attorneys and agents, or
any of them,  may deem  necessary  or advisable to enable said Company to comply
with the Securities Act of 1933, and any rules,  regulations and requirements of
the Securities and Exchange Commission in respect thereof in connection with the
registration  under said Act of not exceeding  3,731,600  shares of Common Stock
(without par value) of said Company, all as authorized by Resolutions adopted by
a unanimous  consent of the Board of Directors of  Constellation  Energy  Group,
Inc. dated as of March 15, 1999,  including  specifically,  but without limiting
the  generality of the  foregoing,  power and authority to sign the names of the
undersigned  directors and officers in the capacities  indicated  below,  to any
post-effective  amendment to any  registration  statements  to be filed with the
Securities and Exchange  Commission in respect of said Common Stock,  to any and
all further amendments to any registration  statements in respect to said Common
Stock, or to any instruments or documents filed as part of or in connection with
said  registration  statement or amendments to such  documents;  and each of the
undersigned  hereby ratifies and confirms all that said attorneys and agents, or
any of them, shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, each of the undersigned has subscribed, or caused
to be subscribed, these presents this 22nd day of March, 1999.

                                                           Signature

Principal Executive Officer
and Director                                 /s/ Charles W. Shivery
                                             -----------------------
                                                 Charles W. Shivery
                                                 Chairman of the Board
                                                 President and Director
Principal Financial and
Accounting Officer
And Director                                /s/  David A. Brune  
                                            -----------------------
                                                 David. A. Brune
                                                 Vice President,
                                                 Secretary and Director


Director                                   /s/   Thomas E. Ruszin, Jr.
                                           ----------------------------
                                                 Thomas E. Ruszin, Jr.
                                                 Treasurer and Director




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