
<PAGE>
 
                                                                    EXHIBIT 24.1

                               POWER OF ATTORNEY

          Each of the undersigned Directors of PG&E Corporation hereby
constitutes and appoints LESLIE H. EVERETT, LINDA Y.H. CHENG, WONDY S. LEE, ERIC
MONTIZAMBERT, GARY P. ENCINAS, JOHN E. FORD, and KATHLEEN HAYES, and each of
them, as his or her attorneys in fact with full power of substitution to sign
and file with the Securities and Exchange Commission in his or her capacity as
such Director of said corporation the registration statement or statements
covering the offer and sale of an aggregate of 3,000,000 shares of PG&E
Corporation common stock to participants in savings fund plans maintained by
PG&E Gas Transmission, Northwest Corporation, PG&E Energy Services Corporation,
and U.S. Generating Company, which have been or will be amended to permit
employees (both union and non-union employees) to direct the investment of their
contributions into a fund containing PG&E Corporation common stock, any and all
amendments, supplements, filings, or other documents related thereto, and hereby
ratifies all that said attorneys in fact or any of them may do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, we have signed these presents this 21st day of October,
1998.

RICHARD A. CLARKE                            RICHARD B. MADDEN
-------------------------                    -----------------------
Richard A. Clarke                            Richard B. Madden

H.M. CONGER                                  REBECCA Q. MORGAN
-------------------------                    -----------------------
H.M. Conger                                  Rebecca Q. Morgan

DAVID A. COULTER                             MARY S. METZ
-------------------------                    -----------------------
David A. Coulter                             Mary S. Metz

C. LEE COX                                   CARL E. REICHARDT
-------------------------                    -----------------------
C. Lee Cox                                   Carl E. Reichardt

WILLIAM S. DAVILA                            JOHN C. SAWHILL
-------------------------                    -----------------------
William S. Davila                            John C. Sawhill

ROBERT D. GLYNN, JR.                         ALAN SEELENFREUND
-------------------------                    -----------------------
Robert D. Glynn, Jr.                         Alan Seelenfreund

DAVID M. LAWRENCE, M. D.                     BARRY LAWSON WILLIAMS
-------------------------                    -----------------------
David M. Lawrence, M. D.                     Barry Lawson Williams
<PAGE>
 
                               POWER OF ATTORNEY


          ROBERT D. GLYNN, JR., the undersigned, Chairman of the Board, Chief
Executive Officer, and President of PG&E Corporation, hereby constitutes and
appoints LESLIE H. EVERETT, LINDA Y.H CHENG, WONDY S. LEE, ERIC MONTIZAMBERT,
GARY P. ENCINAS, JOHN E. FORD, and KATHLEEN HAYES, and each of them, as his
attorneys in fact with full power of substitution to sign and file with the
Securities and Exchange Commission in his capacity as Chairman of the Board,
Chief Executive Officer, and President  (principal executive officer) of said
corporation the registration statements or statements covering the offer and
sale of an aggregate of 3,000,000 shares of PG&E Corporation common stock to
participants in savings fund plans maintained by PG&E Gas Transmission,
Northwest Corporation, PG&E Energy Services Corporation, and U.S. Generating
Company, which have been or will be amended to permit employees (both union ad
non-union employees) to direct the investment of their contributions into a fund
containing PG&E Corporation common stock, any and all amendments, supplements,
filings, or other documents related thereto, and hereby ratifies all that said
attorneys in fact or any of them may do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, I have signed these presents this 21st day of October,
1998.



                                            ROBERT D. GLYNN, JR.            
                                            -------------------------
                                            Robert D. Glynn, Jr.
<PAGE>
 
                               POWER OF ATTORNEY


          MICHAEL E. RESCOE, the undersigned, Senior Vice President, Chief
Financial Officer, and Treasurer of PG&E Corporation, hereby constitutes and
appoints LESLIE H. EVERETT, LINDA Y.H. CHENG, WONDY S. LEE, ERIC MONTIZAMBERT,
GARY P. ENCINAS, JOHN E. FORD, and KATHLEEN HAYES, and each of them, as his
attorneys in fact with full power of substitution to sign and file with the
Securities and Exchange Commission in his capacity as Senior Vice President,
Chief Financial Officer, and Treasurer (principal financial officer) of said
corporation the registration statements or statements covering the offer and
sale of an aggregate of 3,000,000 shares of PG&E Corporation common stock to
participants to participants in savings fund plans maintained by PG&E Gas
Transmission, Northwest Corporation, PG&E Energy Services Corporation, and U.S.
Generating Company, which have been or will be amended to permit employees (both
union ad non-union employees) to direct the investment of their contributions
into a fund containing PG&E Corporation common stock, any and all amendments,
supplements, filings, or other documents related thereto, and hereby ratifies
all that said attorneys in fact or any of them may do or cause to be done by
virtue hereof.

     IN WITNESS WHEREOF, I have signed these presents this 21st day of October,
1998.


                                           MICHAEL E. RESCOE            
                                           -----------------------
                                           Michael E. Rescoe
<PAGE>
 
                               POWER OF ATTORNEY


          CHRISTOPHER P. JOHNS, the undersigned, Vice President and Controller
of PG&E Corporation, hereby constitutes and appoints LESLIE H. EVERETT, LINDA
Y.H. CHENG, WONDY S. LEE, ERIC MONTIZAMBERT, GARY P. ENCINAS, JOHN E. FORD, and
KATHLEEN HAYES, and each of them, as his attorneys in fact with full power of
substitution to sign and file with the Securities and Exchange Commission in his
capacity as Vice President and Controller (principal accounting officer) of said
corporation the registration statements or statements covering the offer and
sale of an aggregate of 3,000,000 shares of PG&E Corporation common stock to
participants to participants in savings fund plans maintained by PG&E Gas
Transmission, Northwest Corporation, PG&E Energy Services Corporation, and U.S.
Generating Company, which have been or will be amended to permit employees (both
union ad non-union employees) to direct the investment of their contributions
into a fund containing PG&E Corporation common stock, any and all amendments,
supplements, filings, or other documents related thereto, and hereby ratifies
all that said attorneys in fact or any of them may do or cause to be done by
virtue hereof.

     IN WITNESS WHEREOF, I have signed these presents this 21st day of October,
1998.


                                            CHRISTOPHER P. JOHNS          
                                            -----------------------
                                            Christopher P. Johns
