Delivering low-emission energy

PG&E is proud to deliver some of the nation's cleanest electric power. In 2021, roughly half of our customers’ electricity came from renewable resources including biopower, geothermal, small hydroelectric, solar and wind power. Overall, 93% of our customers’ electricity came from greenhouse gas (GHG)-free resources, including renewables, nuclear and large hydroelectric power.


Understanding our energy sources


The power mix delivered to PG&E’s bundled-service customers in 2021 included the following greenhouse gas-free technologies:


  • Non-emitting nuclear generation (39%)
  • Large hydroelectric facilities (4%)
  • Eligible renewable resources, such as wind, geothermal, biomass, solar and small hydro (50%)

PLEASE NOTE: Power mix includes all PG&E-owned generation, plus PG&E's power purchases. This information is preliminary and uses the California Energy Commission methodology. The eligible renewable percentage above doesn’t reflect PG&E’s Renewables Portfolio Standard compliance. That’s determined using a different methodology.


View our 2021 electric power mix

PG&E's 2020 Electric Power Mix Chart


Delivering more renewable energy


We deliver a range of clean energy resources, such as solar, wind, geothermal, biomass and small hydroelectric. We're also integrating innovative technology to make the power grid smarter and more resilient. In 2021, we delivered 50% of the electricity our customers use from renewable resources that qualify under California's Renewables Portfolio Standard (RPS). We’re also well positioned to meet the new RPS mandate set forth by SB 100, which requires 60% by 2030, as described in our RPS Procurement Plans filed at the California Public Utilities Commission.


Harnessing the Sun's power


Large-scale solar energy accounts for the biggest portion of PG&E’s total renewable energy power mix. A portion of the solar energy on PG&E's energy grid comes from 13 solar plants. These plants, which we own and operate, are mainly located in California’s Central Valley. We add solar energy to our energy supply through contracts with third-party developers. Plus, we support our customers who choose to install their own solar systems. As of February 2022, PG&E leads the nation with more than 621,000 rooftop solar customers connected to the energy grid.


Improved savings with battery storage


PG&E continues to invest in battery energy storage on behalf of our customers. Battery energy storage enhances overall grid reliability, integrate renewables, and help customers save energy and money. It also allows us—and other utilities—to store excess solar or wind power for later use.


We have contracts for battery energy storage projects totaling more than 3,300 MW of capacity. These are set to be deployed through 2024, supplementing the more than 600 MW of new battery storage capacity already connected to the state’s electric grid.


In addition to large, grid-scale battery storage, we deploy more residential, behind-the-meter (BTM) battery storage capacity systems than anyone in the nation. Through February 2022, more than 35,000 PG&E residential and business customers have installed and connected BTM battery storage systems to the grid in PG&E’s service area, totaling more than 360 MW of capacity. And we continue to connect new systems to the grid each month.


Managing our hydro operations


We own and operate one of the nation's largest investor-owned hydroelectric systems, which provides you and millions of other PG&E customers with a safe and reliable source of clean energy. Our hydro operations:


  • are built along 12 river basins
  • stretch nearly 450 miles, from Redding to Porterville
  • have a generating capacity of nearly 3,900 MW total from 61 powerhouses
  • include a pumped storage facility
  • rely on nearly 100 reservoirs