PG&E EARNS HIGH RANKINGS FOR CLIMATE CHANGE REPORTING

Major Index Lists PG&E in the Top Ten Among S&P 500 and Global 500 Companies

(San Francisco) –The Carbon Disclosure Project (CDP), an independent organization that
maintains the largest global database of corporate climate change information, has listed PG&E
Corporation (NYSE:PCG) as one of the leading companies in the world when it comes to openly
sharing public information on greenhouse gas emissions, emissions reduction targets, and the
implications of climate change for its business. The company ranked in the top ten on the Carbon
Disclosure Leadership Index for both the S&P 500 and the Global 500, and is one of only four U.S.
utilities to make the global listing. PG&E tied for first place as the CDP’s top-ranked utility
globally.

The indices, compiled by PricewaterhouseCoopers (PwC) on behalf of CDP, provide an
evaluation tool for institutional investors seeking to understand and manage risk associated with
climate change. CDP is currently backed by 475 institutional investors with assets of more than $55
trillion who sent the survey to 3,700 of the world's largest companies.

“We’re pleased to be recognized for PG&E’s extensive reporting on the risks and
opportunities that climate change presents to our business,” said Steve Kline, PG&E Corporation’s
Chief Sustainability Officer. “We believe it’s critical that investors, customers, policy makers and
other stakeholders have access to information that allows them to assess and understand the
relationship between our business and the challenge of climate change. We’re committed to
providing the information necessary to make this possible.”

PG&E was among the earliest companies to voluntarily quantify and report greenhouse gas
emissions, which is an essential first step in the longer-term effort to effectively and efficiently
address this challenge. The company was a charter member of the California Climate Action
Registry and, in 2002, became the first investor-owned utility in California to voluntarily complete
a third-party-verified inventory of its CO2 emissions. PG&E has participated in the Carbon
Disclosure Project since 2005.

PG&E Corporation is an energy-based holding company whose core business is Pacific Gas
and Electric Company. Pacific Gas and Electric Company is one of the largest combined natural gas
and electric utilities in the United States. Based in San Francisco, with 20,000 employees, PG&E
delivers some of the nation’s cleanest energy to 15 million people in northern and central
California.

The Global 500 Report including names of companies featured in the Carbon Disclosure
Leadership Index can be found at www.cdproject.net. There is also more information on the
Carbon Disclosure Leadership Index at PG&E’s environmental blog: http://www.next100.com/2009/09/corporations-endorse-climate-a.php. For more information about PG&E Corporation and Pacific Gas and Electric Company, please visit our web sites at www.pgecorp.com and www.pge.com.