Delivering low-emission energy

PG&E delivers some of the nation's cleanest energy. We also plan for the future by exploring new sources of renewable technologies and investing in cleaner sources of fossil fuel-based power.

Understanding our energy sources

About half of the electricity we deliver is a combination of renewable and greenhouse gas-free resources. For example, the power mix delivered in 2012 included:


  • Non-emitting nuclear generation (21 percent)
  • Large hydroelectric facilities (11 percent)
  • Eligible renewable resources, such as wind, geothermal, biomass, solar and small hydro (19 percent).
  • Natural gas/other (27 percent)
  • Unspecified power (21 percent). This electricity is not traceable to specific sources by any auditable contract trail.


PLEASE NOTE: Numbers stated may not add up to 100 percent because of rounding conventions.


View our 2015 electric power mix

PG&E’s 2012 Electric Power Mix Chart


Investing in renewables

Our goal is to provide 33 percent of our energy from renewable sources by the end of 2020. We are on target to achieve that goal.

We are aggressively investing in clean energy resources, including:

  • Solar
  • Wind
  • Geothermal
  • Biomass
  • Small hydro
  • Renewable energy from third parties
  • Renewable projects that we own

In addition, we purchase power from customers who install eligible renewable generation facilities up to 1.5 megawatts (MW) in size. If you own one of these facilities, you can choose to sell us all or part of the electricity that it generates.


Harnessing the Sun’s power

We added more than 100 megawatts (MW) of new solar photovoltaic generation. This addition includes three solar plants in Fresno County that we own and operate. We will continue to add solar energy to our energy supply through significant contracts with third-party developers.

The California Solar Initiative (CSI) Business is an ambitious PGE-administered program designed to increase the amount of customer-installed solar capacity in California. Visit California Solar Initiative (CSI) Business.

PG&E paid and reserved $137 million in rebates for 70 MW of installed and currently active residential and commercial solar installations in 2011. This accounted for nearly half of all applications that customers submitted to get funding for residential and commercial solar projects. Learn more about solar projects. Visit Solar and Renewables with PG&E.

PG&E leads the nation with more than 60,000 solar-generating customers on the electric grid.


Managing our hydro operations

We own and operate the nation's largest investor-owned hydroelectric system, which provides you and millions of other PG&E customers with a safe and reliable source of clean energy. Following are facts about our hydro operations:

  • Built along 16 river basins
  • Stretches nearly 500 miles, from Redding to Bakersfield
  • Has a generating capacity of 3,896 MW total from 68 powerhouses
  • Includes a pumped storage facility
  • Relies on nearly 100 reservoirs


Investing in cleaner conventional sources

To ensure that we can meet your future energy needs, we’re investing in new conventional generation facilities.


  • Contra Costa County Gateway Generating Station. Compared to older fossil-fueled plants, this station produces dramatically less carbon dioxide for every megawatt-hour produced. "Dry" cooling technology means the plant uses 97 percent less water.

  • Colusa Generating Station. Serving nearly half a million homes, this 657 MW combined cycle natural gas power plant uses state-of-the-art technology and environmental design.

  • Humboldt Bay Generating Station. Employing technology that produces significantly less sulphur dioxide, nitrogen oxide, and carbon dioxide emissions than the previous facility at the site, this 163 MW generating station eliminates the need for "once-through" cooling, a technique used in older fossil fueled plants.