EXHIBIT NO. 99
                                                                  --------------

June 29, 1999


To Investors and Analysts:


On June 29, 1999,  Baltimore Gas and Electric Company (BGE) and other interested
parties filed a comprehensive deregulation settlement document with the Maryland
Public Service  Commission  (PSC).  The settlement  agreement  settles two cases
currently  before the Public  Service  Commission  - a petition by the Office of
People's Counsel to reduce BGE's electric rates by up to $141.7 million annually
effective  July 1,  1999 and a  comprehensive  electric  industry  restructuring
proceeding  that deals with  transition  costs,  customer price  protections and
unbundled rates for electric services.

Under the settlement,  all Maryland electric customers (residential,  commercial
and  industrial)  will be able to shop for  electricity  beginning July 1, 2000.
This accelerates the legislative timetable for customer choice. Under Maryland's
restructuring legislation,  one-third of residential customers would be eligible
to choose alternate suppliers beginning July 1, 2000, with incremental one-third
blocks of residential customers on July 1, 2001 and July 1, 2002. Commercial and
industrial  customers are able to choose alternate  suppliers six months earlier
than the January 1, 2001 date contained in the legislation. Customers may choose
to buy their  electric  energy from BGE under a standard  offer  service or from
another supplier. In either case, BGE will continue to deliver the energy to all
customers within its existing service territory.

This settlement, which requires PSC approval, also provides:

     o    There will be no adjustment to electric rates at the present time.

     o    BGE will  accelerate  depreciation  on its  generation  assets by $150
          million  (pre-tax)  during the period  July 1, 1999 - June 30, 2000 in
          order to mitigate a portion of its potentially stranded costs.

     o    Starting on July 1, 2000,  BGE will  unbundle  rates to show  separate
          components for delivery service,  transition  charges,  standard offer
          service (generation), transmission, universal service and taxes.




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     o    Residential  customers'  base rates will be cut by  approximately  $54
          million on July 1, 2000, and residential rates will be frozen at these
          levels for a period of six years (through June 30, 2006).

     o    While  commercial  and  industrial  rates will not be  reduced,  these
          customers will have up to four service  options which fix the electric
          rates and transition  charges for a period that generally  ranges from
          four to six years.  Electric delivery service rates for commercial and
          industrial  customers will be frozen for a four-year  period  (through
          June 30, 2004).

     o    BGE  will be  allowed  to  recover  $528  million  of its  potentially
          stranded  costs through a competitive  transition  charge (CTC).  This
          amount  represents a final  determination  of all stranded cost claims
          related to its generation  assets.  BGE had requested recovery of $897
          million.  BGE has agreed to apply 75% of any future savings associated
          with securitization to reduce the CTCs paid by its customers.

     o    Generation related regulatory assets and nuclear decommissioning costs
          will be included in delivery  service rates effective July 1, 2000 and
          will be recovered under existing amortization schedules.

     o    On  July  1,  2000,  BGE  will  transfer,   at  book  value,   its  10
          Maryland-based  fossil  and  nuclear  power  plants  and  its  partial
          ownership  interest  in two coal plants and a  hydroelectric  plant in
          Pennsylvania  to an  unregulated  subsidiary of  Constellation  Energy
          Group,  BGE's  parent  company.  Constellation  Energy shall retain or
          absorb 100% of any  revenues or gains and losses  associated  with the
          operation, transfer or subsequent sale of these generation assets.

This agreement settles the major issues related to deregulation,  moving BGE and
Constellation  Energy one step closer to  competing  in a  deregulated  electric
marketplace.

The settlement  agreement  includes  Baltimore Gas and Electric  Company and the
following parties:  the Building Owners and Managers Association of Metropolitan
Baltimore,  Inc.,  Board of County  Commissioners  of Calvert County,  Maryland,
Department of Defense/Federal  Executive Agencies,  Enron Energy Services, Inc.,
The Johns Hopkins  University and The Johns Hopkins  Health System  Corporation,
Maryland  Energy  Administration,   Maryland  Industrial  Group  and  Millennium
Inorganic  Chemicals  Inc.,  Maryland  Office  of  People's  Counsel,   Maryland
Retailers  Association,  National Railroad  Passenger  Corporation,  Power Plant
Research  Program  of the  Maryland  Department  of Natural  Resources,  and the
Maryland Public Service Commission Staff.

BGE expects to have a final  decision on the proposed  settlement  no later than
October 1, 1999.

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Attached to this letter are  summaries of the electric  customer CTC options and
the electric CTC rates and Standard Offer Service (SOS) prices.

Please direct any inquiries to:

Kevin J. Miller                     David A. Brune
Manager - Financial Planning        Vice President - Finance & Accounting,
Constellation Energy Group          Chief Financial Officer and Secretary
410-234-5434                        Constellation Energy Group
                                            410-234-5511


















         We make  statements in this letter that are considered  forward-looking
statements  within the meaning of the  Securities Act of 1933 and the Securities
Exchange  Act of 1934.  These  statements  are  related  to the  effects  of the
proposed   deregulation   settlement  on  Constellation  Energy  Group's  future
operating results.
         Sometimes these statements 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 projected.
         These risks, uncertainties and factors include, but are not limited to:
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  costs);  commodity
price risk; and year 2000 readiness.  Given these uncertainties,  you should not
place undue reliance on these forward-looking statements.
         Please see our filings with the Securities and Exchange  Commission for
more information on these factors . These  forward-looking  statements represent
our  estimates  and  assumptions  only  as of the  date of  this  letter  and we
undertake  no duty to  update  any  forward-looking  statement  to  reflect  the
occurrence of unanticipated events.




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                    Summary of Electric Customer CTC Options



                                                           Distribution        Generation Price
                                                           Price Freeze        Protection         Annual Rate
Customer Tariff                        CTC Period          Period              Period             Cut
- ---------------                        ----------          ------              ------             ---


                                                                                       
Residential                            6 years             6 years             6 years             $53.8M
(1998 Sales-11.0 million MWH)

Commercial & Industrial:

     G/GS - <60kW demand:
    (1998 Sales-2.9 million MWH)

         Option 1                      6 years             4 years             4 years             None
         Option 2                      5 years             4 years             4 years             None

    GL - demand of 60kW or more:
    (1998 Sales-6.3 million MWH)

         Option 1                      4 years             4 years             None                None
         Option 2                      5 years             4 years             4 years             None
         Option 3                      5 years             4 years             None                None
                                       (declining)

    P     - primary voltage - demand of 1,500 kW or more:
    (1998 Sales-6.4 million MWH)

         Option 1                      4 years             4 years             None                None
         Option 2                      5 years             4 years             1 year              None
         Option 3                      6 years             4 years             2 years             None
         Option 4                      5 years             4 years             None                None
                                       (declining)





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                      Summary of Electric Customer CTCs and
            Standard Offer Service Rates (Shopping Credits) by Option


                         Initial                                     Initial SOS
Customer                 CTC               Subsequent                Price             Subsequent
Tariff                   (cents/kWh)       Trend                     (cents/kWh)       Trend
- ------                   -----------       -----                     -----------       -----

Residential:

         R                 .800             Declining - 6 years        4.224            Increasing - 6 years

         RL                .800             Declining - 6 years        3.732            Increasing - 6 years
     (Time of Use)

Commercial & Industrial:

         G:
           Option 1        .576             Flat - 6 years             4.766            Flat - 4 years
           Option 2        .674             Flat - 5 years             4.668            Flat - 4 years

         GS:
           Option 1        .576             Flat - 6 years             4.478            Flat - 4 years
           Option 2        .674             Flat - 5 years             4.380            Flat - 4 years

         GL Secondary:
           Option 1        .805             Flat - 4 years             N/A              N/A
           Option 2        .661             Flat - 5 years             4.401            Flat - 4 years
           Option 3        1.500            Declining - 5 years        N/A              N/A

         GL Primary:
           Option 1        .805             Flat - 4 years             N/A              N/A
           Option 2        .661             Flat - 5 years             3.976            Flat - 4 years
           Option 3        1.500            Declining - 5 years        N/A              N/A

         P:
           Option 1        .742             Flat - 4 years             N/A              N/A
           Option 2        .610             Flat - 5 years             3.828            Flat - 1 year
           Option 3        .522             Flat - 6 years             3.916            Flat - 2 years
           Option 4        1.400            Declining - 5 years        N/A              N/A




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