Exhibit 12.1

PACIFIC GAS AND ELECTRIC COMPANY

COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

	Three Months Ended September 30,		Nine Months Ended September 30,		Year Ended December 31,
	2010		2010		2009		2008		2007		2006		2005
Earnings:
Net income	$	265	$	868	$	1,250	$	1,199	$	1,024	$	985	$	934
Income taxes provision		107		498		482		488		571		602		574
Net fixed charges		199		588		817		860		889		801		589
Total Earnings	$	571	$	1,954	$	2,549	$	2,547	$	2,484	$	2,388	$	2,097
Fixed Charges:
Interest on short-term borrowings and long-term debt, net	$	181	$	535	$	754	$	794	$	834	$	770	$	573
Interest on capital leases		4		13		19		22		23		11		1
AFUDC debt		14		40		44		44		32		20		15
Total Fixed Charges	$	199	$	588	$	817	$	860	$	889	$	801	$	589
Ratios of Earnings to Fixed Charges		2.87		3.32		3.12		2.96		2.79		2.98		3.56

Note: For the purpose of computing Pacific Gas and Electric Company’s ratios of earnings to fixed charges, “earnings” represent net income adjusted for the income or loss from equity investees of less than 100% owned affiliates, equity in undistributed income or losses of less than 50% owned affiliates, income taxes and fixed charges (excluding capitalized interest). “Fixed charges” include interest on long-term debt and short-term borrowings (including a representative portion of rental expense), amortization of bond premium, discount and expense, interest on capital leases, AFUDC debt, and earnings required to cover the preferred stock dividend requirements and preferred security distribution requirements of majority-owned trust. Fixed charges exclude interest on tax liabilities.