Exhibit 24.2

POWER OF ATTORNEY

Each of the undersigned Directors of PG&E
Corporation hereby constitutes and appoints HYUN PARK, LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d) of the Securities
Exchange Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.



|                                              |  |                                            
|--------------------------------------------- |  | -------------------------------------------
|DAVID R. ANDREWS David R. Andrews             |  | RICHARD A. MESERVE Richard A. Meserve      
|                                              | 
|LEWIS CHEW Lewis Chew                         |  | FORREST E. MILLER Forrest E. Miller        
|                                              | 
|C. LEE COX C. Lee Cox                         |  | ROSENDO G. PARRA Rosendo G. Parra          
|                                              | 
|PETER A. DARBEE Peter A. Darbee               |  | BARBARA L. RAMBO Barbara L. Rambo          
|                                              | 
|MARYELLEN C. HERRINGER Maryellen C. Herringer |  | BARRY LAWSON WILLIAMS Barry Lawson Williams
|                                              | 
|ROGER H. KIMMEL Roger H. Kimmel               |  |                                            



---

POWER OF ATTORNEY

PETER A. DARBEE, the undersigned, Chairman of the Board, Chief Executive Officer, and President of PG&E Corporation, hereby
constitutes and appoints HYUN PARK, LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 Annual Report on Form 10-K for the year ended December 31, 2010 required
by Section 13 or 15(d) of the Securities Exchange Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.



PETER A. DARBEEPeter A. Darbee




---

POWER OF ATTORNEY

KENT M. HARVEY, the undersigned, Senior Vice President and Chief Financial Officer of PG&E Corporation, hereby constitutes and
appoints HYUN PARK, LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 and Chief Financial Officer (principal financial officer) of said corporation the Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d)
of the Securities Exchange Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.



KENT M. HARVEYKent M. Harvey




---

POWER OF ATTORNEY

DINYAR B. MISTRY, the undersigned, Vice President and Controller of PG&E Corporation, hereby constitutes and appoints HYUN PARK,
LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d) of the Securities Exchange Act of 1934 and any
and all amendments and other filings or 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 16th day of February, 2011.



DINYAR B. MISTRYDinyar B. Mistry




---

POWER OF ATTORNEY

Each of the undersigned Directors of Pacific Gas and Electric Company hereby constitutes and appoints HYUN PARK, LINDA Y.H. CHENG, EILEEN
O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d) of the Securities Exchange Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.





|                                              |  |                                            
|--------------------------------------------- |  | -------------------------------------------
|DAVID R. ANDREWS David R. Andrews             |  | ROGER H. KIMMEL Roger H. Kimmel            
|                                              | 
|LEWIS CHEW Lewis Chew                         |  | RICHARD A. MESERVE Richard A. Meserve      
|                                              | 
|C. LEE COX C. Lee Cox                         |  | FORREST E. MILLER Forrest E. Miller        
|                                              | 
|PETER A. DARBEE Peter A. Darbee               |  | ROSENDO G. PARRA Rosendo G. Parra          
|                                              | 
|MARYELLEN C. HERRINGER Maryellen C. Herringer |  | BARBARA L. RAMBO Barbara L. Rambo          
|                                              | 
|CHRISTOPHER P. JOHNS Christopher P. Johns     |  | BARRY LAWSON WILLIAMS Barry Lawson Williams



---

POWER OF ATTORNEY

CHRISTOPHER P. JOHNS, the undersigned, President of Pacific Gas and Electric Company, hereby constitutes and appoints HYUN PARK, LINDA
Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 President (principal executive officer) of said corporation the Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d) of the Securities Exchange Act of 1934 and any and all amendments
and other filings or 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 16th day of February, 2011.



CHRISTOPHER P. JOHNSChristopher P. Johns




---

POWER OF ATTORNEY

SARA A. CHERRY, the undersigned, Vice President, Finance and Chief Financial Officer of Pacific Gas and Electric Company, hereby
constitutes and appoints HYUN PARK, LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, and each of them, as her attorneys in fact with full power of substitution to sign and file with the
Securities and Exchange Commission in her capacity as Vice President, Finance and Chief Financial Officer (principal financial officer) of said corporation the Annual Report on Form 10-K for the year ended December 31, 2010 required by
Section 13 or 15(d) of the Securities Exchange Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.



SARA A. CHERRYSara A. Cherry




---

POWER OF ATTORNEY

DINYAR B. MISTRY, the undersigned, Vice President and Controller of Pacific Gas and Electric Company, hereby constitutes and appoints
HYUN PARK, LINDA Y.H. CHENG, EILEEN O. CHAN, WONDY S. LEE, ERIC MONTIZAMBERT, KATHLEEN HAYES, and DOREEN A. LUDEMANN, 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 Annual Report on Form 10-K for the year ended December 31, 2010 required by Section 13 or 15(d) of the Securities Exchange
Act of 1934 and any and all amendments and other filings or 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 16th day of February, 2011.



DINYAR B. MISTRYDinyar B. Mistry