Filed by Energy East Corporation
                           Pursuant to Rule 425 under the Securities Act of 1933
                                         and deemed filed pursuant to Rule 14a-6
                                       under the Securities Exchange Act of 1934

                                         Subject Company: RGS Energy Group, Inc.
                                                      Registration No. 333-59300

  NEW YORK INDEPENDENT SYSTEM OPERATOR (ISO) MUST CONSOLIDATE WITH OTHER ISOs

FOR IMMEDIATE RELEASE

        ALBANY, N.Y., June 20, 2001 -- On the heels of yesterday's Federal
Energy Regulatory Commission technical conference on interregional  coordination
issues,  Energy East Corporation (NYSE:  EAS), through its NYSEG subsidiary,  is
continuing  to  push  for  consolidation  of  the  New  York,  New  England  and
Pennsylvania-New Jersey-Maryland Independent System Operators (ISO).

        NYSEG recently issued a proposal to enhance an ongoing "memorandum of
understanding"  (MOU) process under which the ISOs are exploring ways to enhance
regional  reliability  through coordinated  operations and planning,  facilitate
broader competitive markets, and improve communications with market participants
and the public.

        "Under NYSEGPlan, a six-point energy policy statement issued in March,
the company  advocated  the creation of a regional  transmission  organization,"
said Denis Wickham, Energy East's senior vice president-transmission and supply.
"Energy East has the perspective of operating electric utilities in both the New
York and New England  regions,  and it has become  crystal clear that a regional
energy  market  with more  suppliers  and more  consumers  will  improve  market
liquidity and enhance wholesale competition."

        "By implementing the changes in the MOU process that NYSEG suggests, we
can move more decisively toward common markets,  implementing best practices and
avoiding new problems  that could result from rules or software  changes  within
one ISO or another,"  Wickham said. "If used more effectively and  productively,
the MOU process we are already engaged in will lead to consensus,  understanding
and greater cooperation."

        In addition to various  administrative  improvements aimed at ensuring
full representation and thorough discussions at MOU meetings,  NYSEG's suggested
process changes include:
   --   Creating a chief  executive  officer  committee, representing  all
        three  ISOs,  to  monitor  progress  and  expedite  the  approval and
        implementation of changes.
   --   Enabling  all three ISO boards of directors to participate in the MOU
        process through periodic meetings with an inter-ISO coordinating team.
   --   Committing each ISO committee to vote on changes  approved by the MOU
        working group within 45 days.
   --   Creating a vehicle to have all three ISOs resolve  issues and approve
        action in unison.

The working groups involved in the ongoing MOU discussions operate independently
and  do  not  have  a  mechanism  to  formally   implement  market   participant
recommendations.   Coordination   of   activities   has  been   cumbersome   and
participation in the discussions by market  participants has been declining.  In
addition:
   --   It has been difficult to adopt best practices across the region because
        each ISO's relevant committee(s) have reviewed the results of ongoing
        discussions and made changes independent from each of the other ISOs.
   --   The MOU procedures are not sufficiently defined in terms of notices,
        agenda development, market participant input, required presentations,
        minutes, action plans, resolutions and follow-up on action items.
   --   More consistent and timely information on MOU activities is needed. The
        MOU process lacks transparent coordination of inter-ISO regional
        initiatives, including development of solutions, milestones and
        implementation plans consistent with the requirements of the region.
        Transparency will enable market participants, through their individual
        ISO committees, and ISO senior management to assist in resolving the
        problems or prioritizing the solutions.
   --   The MOU process would be far more effective if it were guided over the
        intermediate-term (next two years) by a vision of broader, seamless,
        consistent markets when considering rule changes or the adoption of new
        rules or market design by one or more of the ISOs.

        "We need to fix this process now in order to ensure optimal results. The
end  result  of these  MOU  discussions  can and  should  be a more  competitive
wholesale  power market in the Northeast  which will benefit retail  competition
and, ultimately, end users," Wickham said.

ABOUT ENERGY EAST: Energy East is a super-regional energy services and delivery
company  serving 2 million  customers  (1.4  million  electricity  and 600,000
natural  gas) in upstate  New York and New  England  over a  32,000-square  mile
service  area.  On  February  20,  2001,   Energy  East  announced  a  strategic
combination  with RGS Energy  Group,  the  parent  company  of  Rochester  Gas &
Electric  Corporation.  The combined  company  will be one of the largest,  most
diversified  energy  providers in the  Northeast,  servicing half of upstate New
York  and  nearly 3  million  customers,  including  approximately  1.8  million
electric  customers,  almost one million natural gas customers and approximately
200,000 other retail energy  customers.  For more information about Energy East,
please visit the company's Web site at www.energyeast.com.

ABOUT NYSEG: NYSEG is a subsidiary of Energy East Corporation, a super-regional
energy services and delivery company in the Northeast.  NYSEG provides  superior
customer  service and  promotes  competition.  By focusing on customer  service,
competition  and  growth,  NYSEG will  continue  to be a  valuable  asset to the
communities it serves. For more information about NYSEG, visit the company's Web
site at www.nyseg.com.

SAFE HARBOR STATEMENT
UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

The foregoing  contains  forward-looking  statements within the meaning of the
"safe harbor"  provisions of the United States  Private  Securities  Litigation
Reform Act of 1995. Investors are cautioned that such forward-looking statements
with respect to revenues, earnings, performance, strategies, prospects and other
aspects  of the  businesses  of Energy  East and RGS Energy are based on current
expectations  that are subject to risks and  uncertainties.  A number of factors
could cause actual results or outcomes to differ materially from those indicated
by such forward-looking  statements.  These factors include, but are not limited
to, risks and  uncertainties set forth in Energy East's and RGS Energy's filings
with the SEC,  including risks and uncertainties  relating to: failure to obtain
and retain expected synergies from the merger between Energy East and RGS Energy
and the prior Energy East  mergers,  delays in  obtaining or adverse  conditions
contained in any required regulatory approvals,  changes in laws or regulations,
economic or weather  conditions  affecting future sales and margins,  changes in
markets for  electricity and natural gas,  availability  and pricing of fuel and
other energy commodities,  legislative and regulatory changes (including revised
environmental  and safety  requirements),  availability  and cost of capital and
other  similar  factors.  Readers are referred to Energy East's and RGS Energy's
most recent reports filed with the SEC.

ADDITIONAL INFORMATION AND WHERE TO FIND IT

In connection  with their  proposed  merger,  Energy East and RGS Energy have
filed a joint  proxy  statement/prospectus  with  the  Securities  and  Exchange
Commission.  The joint proxy  statement/prospectus was mailed to Energy East and
RGS Energy  shareholders  beginning  on April 28, 2001.  INVESTORS  AND SECURITY
HOLDERS  ARE ADVISED TO READ THE JOINT  PROXY  STATEMENT/PROSPECTUS,  BECAUSE IT
CONTAINS IMPORTANT INFORMATION. Investors and security holders may obtain a free
copy of the joint proxy statement/prospectus and other documents filed by Energy
East  and RGS  Energy  with  the  Commission  at the  Commission's  web  site at
www.sec.gov.  Free  copies of the joint proxy  statement/prospectus,  and each
company's  other  filings  with the  Commission  may also be  obtained  from the
respective  companies.  Free copies of Energy East's  filings may be obtained by
directing a request to Energy East Corporation, P.O. Box 3200, Ithaca, NY 14852-
3200,  Telephone:  800-225-5643.  Free  copies of RGS  Energy's  filings  may be
obtained  by  directing a request to RGS Energy  Group,  Inc.,  89 East  Avenue,
Rochester, NY 14649, Telephone: 800-724-8833.

CONTACT: Thorn Dickinson
         Manager-Investor Relations, Energy East
         607.347.2561