Where Our Power Comes From

CleanPowerSF is San Francisco’s local, clean energy provider. We source power that is clean, reliable, and affordable for more than 380,000 customers.

Our energy comes from a variety of resources mostly right here in California. The majority of our power is solar, wind, geothermal and hydroelectric power.

To date, we have committed to sourcing energy from more than 600 megawatts of brand new solar, wind and geothermal projects, and over 300 megawatts in new battery storage. As a CleanPowerSF customer, you are helping to support the construction of these new projects and California’s transition to a clean energy future.

Learn more about CleanPowerSF’s energy sources below.


Projects Online

These are CleanPowerSF’s multi-year renewable energy projects currently under contract. These projects power your home or business with clean energy.


Projects In Development

CleanPowerSF has several contracted renewable energy projects in the construction phase. Click on the projects below to learn more.

  • Energy Type: Solar plus battery storage
    Location: Alameda County, CA

    The to-be-constructed Aramis Solar Plus Storage project will provide 75 MW of solar energy and 75 MW of battery storage capacity to CleanPowerSF customers. Once complete, this Bay Area project will also provide valuable clean and reliable power to the Bay Area region. The project is expected to generate over 400 all-union construction jobs between IP Aramis, LLC and five local construction crafts representing over 10,000 members living in Alameda and Contra Costa counties.

  • Energy Type: Battery storage
    Location: Rosamond, CA (Kern County, CA)

    The Tumbleweed project is located near Rosamond in Kern County, CA and is a proposed 75 MW battery storage project that will provide about 12 MW of energy storage capacity to CleanPowerSF once completed. This project, along with the Goal Line project, will provide energy storage capability for the equivalent of about 35,000 average San Francisco residential customers for up to 8-hours.

  • Energy Type: Geothermal
    Location: Esmerelda County, NV

    The Fish Lake Geothermal project is located in Esmerelda County, NV. It is a to-be-constructed 13 MW geothermal power plant that will provide about 2 MW to CleanPowerSF. Once completed, this project will provide enough energy for approximately 5,000 average San Francisco residential customers.

  • Energy Type: Geothermal
    Location: California and Nevada

    The Ormat Geothermal Portfolio Project are to-be-constructed geothermal power plants located in California and Nevada. Once completed, this project will provide enough energy for approximately 50,000 average San Francisco residential customers.

  • Energy Type: Battery storage
    Location: Solano County, CA

    Expected to be operational in 2025, the Corby project will be CleanPowerSF’s first standalone battery storage project located in Northern California. The project will have a total capacity of 300 MW of battery storage as well as create approximately 200 construction jobs. The project is being developed by a subsidiary of NextEra Energy Resources, LLC.

  • Energy Type: Wind 
    Location: New Mexico 

    The 3,500 MW SunZia wind project is located in New Mexico and will provide 100 MW of wind energy to CleanPowerSF once completed. CleanPowerSF’s contracted share of the SunZia project is enough to power 105,000 average San Francisco homes. This project will increase the geographic diversity of the CleanPowerSF portfolio and will deliver valuable renewable generation in the winter months when solar and California wind generation is at its lowest.


Power Content Label

Green service

Our Green service delivers 89% renewable energy, and features resources like solar, wind, geothermal, and hydroelectric power, a greenhouse gas-free source of electricity.

SuperGreen Service

Our SuperGreen service features 100% renewable energy per the state’s Renewables Portfolio Standard, and consists of wind and solar power.

View the 2024 SuperGreen Power Content Label (pdf).

The Power Content Label featured below is for 2024.

  • This label does not reflect compliance with the Renewables Portfolio Standard (RPS), which measures the use of tracking instruments called Renewable Energy Credits (RECs) over the course of multi-year compliance periods. RECs that are purchased separately from the renewable energy ("Unbundled RECs") can be used for RPS compliance, but they do not factor into the power mixes or GHG emissions intensities above.

  • Unspecified power is electricity purchased from a genericized pool on the open market.

  • For specific information about this electricity product, contact us at 415-554-0773.


Integrated Resource Plan (IRP)

Every two years, CleanPowerSF must update its roadmap for supplying electricity that meets customer demand. This roadmap, also known as the Integrated Resource Plan (IRP), captures our energy resource planning and investment over the next 20 years and helps us navigate evolving market and regulatory conditions and weigh important trade-offs.

CleanPowerSF’s most recent Integrated Resource Plan was completed in 2022. You can read a short summary here. Learn more about CleanPowerSF and the 2025 IRP here.