Exhibit 15.1

                    Report of Independent Accountants

To the Shareholders and Trustees of
Boston Edison Company:

We have reviewed the accompanying condensed consolidated balance
sheet of Boston Edison Company and its subsidiaries as of March
31, 2002, and the related condensed consolidated statements of
income, retained earnings and of cash flows for each of the three-
month periods ended March 31, 2002 and 2001. These financial
statements are the responsibility of the Company's management.

We conducted our review in accordance with standards established
by the American Institute of Certified Public Accountants.  A
review of interim financial information consists principally of
applying analytical procedures to financial data and making
inquiries of persons responsible for financial and accounting
matters.  It is substantially less in scope than an audit
conducted in accordance with generally accepted auditing
standards, the objective of which is the expression of an opinion
regarding the financial statements taken as a whole.
Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material
modifications that should be made to the accompanying condensed
consolidated interim financial statements for them to be in
conformity with accounting principles generally accepted in the
United States of America.

We previously audited in accordance with auditing standards
generally accepted in the United States of America, the
consolidated balance sheet of Boston Edison Company as of
December 31, 2001, and the related consolidated statements of
income, comprehensive income, retained earnings, and cash flows
for the year then ended (not presented herein), and in our report
dated January 31, 2002, except as to Note B(2), which is as of
March 22, 2002, we expressed an unqualified opinion on those
consolidated financial statements.  In our opinion, the
information set forth in the accompanying condensed consolidated
balance sheet as of March 31, 2002, is fairly stated in all
material respects in relation to the consolidated balance sheet
from which it has been derived.


PricewaterhouseCoopers LLP
Boston, Massachusetts
May 15, 2002