Where We Source Our Power
Local, clean, renewable energy
CleanPowerSF is San Francisco’s local, clean energy provider. We source power that is clean, reliable, and affordable for 385,000 customers. Learn more about CleanPowerSF’s energy sources below.
Where Our Power Comes From
Our energy comes from a variety of resources. The majority of our power is solar, wind, geothermal and hydroelectric power mostly from projects right here in California.
To date, we have committed to sourcing energy from more than 800 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 enabling San Francisco and California’s transition to a clean energy future.
Projects Online
These CleanPowerSF projects power your home or business with clean energy.
Solar Projects
Maverick Solar 6
Maverick Solar 6 is a 100 MW solar and 50 MW battery storage facility built near Desert Center, a community east of Palm Springs. The project can produce enough clean electricity each year to power 108,000 average San Francisco homes.
Location: Desert Center, CA
Serving CleanPowerSF Customers Since: 2021
Length of Contract: 20 years
Blythe Solar IV
Blythe Solar IV is a 62.5 MW solar and 47 MW battery storage center in Blythe, California. A subsidiary of NextEra Energy Resources developed, owns and operates the project, which created approximately 150 construction projects.
Location: Blythe, CA
Serving CleanPowerSF Customers Since: 2020
Length of Contract: 20 years
AES San Pablo Raceway
San Pablo Raceway is a 100-MW solar project. It was developed by AES, the largest private owner of operating solar assets in the U.S. The project created about 500 construction jobs during the 7-8 months of construction and created 10 full-time positions.
Location: Los Angeles County, CA
Serving CleanPowerSF Customers Since: 2019
Length of Contract: 22 years
Wind Projects
Oasis Power Partners
Oasis Power Partners is a 60.3-MW wind project located in Mojave, California.
Location: Kern County, CA
Serving CleanPowerSF Customers Since: 2021
Length of Contract: 15 years
Terra-Gen voyage IV Wind Project
This 50.1-MW wind project is located in Kern County, California. It continues to create many construction jobs and positions while delivering wind power.
Location: Kern County, CA
Serving CleanPowerSF Customers Since: 2020
Length of Contract: 15 years
Geothermal Projects
Battery Projects
The Geysers
The Geysers covers 45 square miles along the Sonoma and Lake County border in the Mayacamas Mountains. It is the largest complex of geothermal power plants in the world. It has the ability to provide California with one-fifth of its green power energy. Calpine Corporation operates The Geysers.
Location: Sonoma and Lake Counties, CA
Serving CleanPowerSF Customers Since: 2018
Length of Contract: 12 years
Tumbleweed Long Duration Storage
The Tumbleweed project is located near Rosamond in Kern County, California. It is a 75 MW battery storage project that will provide about 12 MW of energy storage capacity. This project, with the Goal Line project, provides enough energy storage to power 35,000 average San Francisco homes for up to 8 hours.
Location: Rosamond, CA (Kern County, CA)
Serving CleanPowerSF Customers Since: 2026
Length of Contract: 15 years
Paulsell Solar + Storage
Paulsell Energy Center is a solar power plant located in Stanislaus County. It provides 20 MW of solar energy and 15 MW of battery storage capacity. It was built by NextEra Energy Resources. The project created between 40 to 60 full-time construction jobs.
Location: Stanislaus County, CA
Serving CleanPowerSF Customers Since: 2024
Length of Contract: 20 years
SunZia
The SunZia Wind project represents over 3,500 MW of new renewable generation located in Torrance, Lincoln and San Miguel Counties, New Mexico. SunZia Wind and Transmission comprise the largest renewable energy infrastructure project in U.S. history, and will create more than 2,000 construction jobs.
Location: Lincoln, Torrance and San Miguel Counties in New Mexico
Serving CleanPowerSF Customers Since: 2026
Length of Contract: 15 years
Projects In Development
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Energy Type: Solar plus battery storage
Location: Alameda County, CAThe 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 project will also provide clean and reliable power to the Bay Area. 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.
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Energy Type: Battery storage
Location: Solano County, CAThe Corby Project is CleanPowerSF’s first standalone battery storage located in Northern California. It will have a total capacity of 300 MW of battery storage and will create about 200 construction jobs. The project is led by a company under NextEra Energy Resources, LLC.
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Energy Type: Solar plus battery storage
Location: Fresno County, CAThe Darden Project comprises a 71 MW solar facility with a 71 MW battery storage facility located in Fresno County California. The 15-year contract with Intersect Power, LLC was executed in November 2025. It’s expected the facility will begin operating in mid-2028.
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Energy Type: Geothermal
Location: Esmerelda County, NVThe Fish Lake Geothermal project is located in Esmeralda County Nevada. It is a 13 MW geothermal power plant that will provide about 2 MW to CleanPowerSF. Once completed, this project will provide enough energy for about 5,000 San Francisco homes.
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Energy Type: Wind + Storage
Location: Merced CountyDeveloped by Colorado-based Scout Clean Energy, Gonzaga Ridge will be the largest single source of wind energy in CleanPowerSF’s power supply. It will generate enough electricity annually to power approximately 120,000 average San Francisco homes. Additionally, the 50-megawatt 4-hour battery energy storage system will store energy produced during the day for use in the evening, when power from the grid is more costly and reliant on natural gas. The project is anticipated to come online in May 2026.
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Energy Type: Solar
Location: Riverside County, CaliforniaThe IP Easley Project is located in Riverside County, California. It is a 400 MW project, and CleanPowerSF will benefit 50 MW from the project. The project is being developed by Intersect Power and will begin generating as soon as fall 2026.
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Energy Type: Geothermal
Location: California and NevadaThe Ormat Geothermal Portfolio Project includes geothermal power plants located in California and Nevada.This project will provide enough energy for about 50,000 San Francisco homes.
Power Content Label
Green Service
Our Green service delivers at least 70% California-certified 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.
| ENERGY RESOURCES | CleanPowerSF Green |
CleanPowerSF SuperGreen Saver |
2024 CA Power Mix** |
|---|---|---|---|
| Eligible Renewable | 89% | 100% | 45% |
| Biomass & Biogas | 2% | 0% | 2% |
| Geothermal | 13% | 0% | 5% |
| Eligible Hydroelectric | 1% | 0% | 2% |
| Solar | 50% | 50% | 23% |
| Wind | 22% | 50% | 14% |
| Coal & Petroleum | 0% | 0% | 2% |
| Large Hydroelectric | 11% | 0% | 10% |
| Natural Gas | 0% | 0% | 10% |
| Nuclear | 0% | 0% | 11% |
| Other | 0% | 0% | 0% |
| Unspecified sources of power* | 0% | 0% | 22% |
| TOTAL | 100% | 100% | 100% |
The Power Content Label featured here is for 2024. Please also view the 2024 Power Content Label here.
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)
CleanPowerSF’s Integrated Resource Plan (IRP) is a roadmap for serving our customers’ energy demand. The IRP shows CleanPowerSF’s energy planning and investment over the next 20 years. It helps us balance decisions between cost and achieving 100 percent renewable energy. CleanPowerSF is committed to an IRP that meets regulations and prioritizes our program goals of affordability, clean energy investment, and rate and financial stability. Learn more about the IRP.