Solano 4 Wind Project

As your community-owned, not-for-profit electric utility, we're committed to providing you with affordable, reliable and environmentally responsible power. To support our commitment, we're constructing more wind turbines at our Solano Wind Farm.

The Solano 4 Wind project includes replacing some existing wind turbines with up to 19 new modern turbines. This will generate 85 megawatts (MW) of renewable energy to deliver to the electric grid.

Construction began in late 2020 and is expected to be completed in mid-2024. Learn more about the project and how you can provide your input below.


The Solano 4 Wind Project is located on 5,900 acres of land in the Solar Wind Resource Area in Solano County. The re-power project includes the decommissioning and replacement of some existing older wind turbines with larger modern turbines. The two areas of the project are Solano 4 East (881 acres) and Solano 4 West (1,390 acres). SMUD is constructing 9 turbines in the east and 10 in the west. The Solano 4 wind turbines have a blade diameter of 150 meters and produce 4.5 MW of power each.

Map of Solano 4 Wind ProjectSolano 4 Wind Project Map Legend

The electricity generated would bring our Wind Farm’s production to 303 MW. Output from the project is delivered to the electric grid through the existing Russel Substation in Solano County. The power generated would count toward the State of California’s Renewable Portfolio Standard, helping SMUD reach its 2030 Zero Carbon Plan.

Existing wind turbines are being replaced with fewer wind turbines with a maximum height of 492 to 590 feet and a maximum rotor diameter of 446 to 492 feet. As a result, we have a significant improvement in energy yield. Access roads and collection lines would be installed to support the new turbines. Final turbine locations and heights will be determined after we complete the engineer and construct procurement process. 

Existing public and new private roads are used to transport equipment and turbine components to the Solano 4 project site. Access roads and electrical collection lines are installed to operate and maintain new turbines. Due to the size of the turbine parts, they are transported by from the manufacturer by ship to the Port of Stockton, offloaded and move to the site by truck.

Ten separate wind energy facilities (including SMUD's existing Solano Wind Project) currently operate in the area. The area is not only home to wind farms, it also has a long and continued history of farming and ranching.

We are currently in the Project Development stage of the project, which involves feasibility analysis, land acquisition, permitting and obtaining interconnection. 


The project would provide a source of low-cost renewable energy. It contributes to SMUD's 2030 Zero Carbon Plan by adding more than 300 GWh of renewable energy and would allow an aging fleet of wind turbines to be replaced with the latest and most efficient technology. Re-powering the wind turbines allows the Wind Farm to continue to produce important renewable resources for another 30 years, while also providing local, high-paying jobs and economic benefits to the community.


SMUD is a long-standing member of the Solano County community. We're committed to working closely with stakeholders and residents to minimize any project impacts. 

As a member of the area Chamber of Commerce, we continue to work with our partners to support community efforts and events, agriculture and land conservation to benefit the region. We'll continue to distribute information and hold community meetings during critical phases of the project to keep the community informed and provide opportunity for input.


This project accomplishes the following objectives:

  • Contribute to a diversified energy portfolio that will aid in the continued improvement of air quality in the Sacramento air basin by decreasing reliance on fossil fuel combustion for the generation of electricity.
  • Assist SMUD in achieving the Board of Directors’ directive of using renewable resources to meet 50% of SMUD’s load by 2030; this goal is consistent with Senate Bill (SB) 350, which was signed into law in 2015.
  • Support SMUD’s ability to meet the 2030 Zero Carbon Plan.
  • Develop an economically feasible wind project that will produce a reliable supply of approximately 300 GWh of renewable energy annually.
  • Accommodate the long-term viability of agricultural use within the Montezuma Hills.

Contact us

For more information, contact us directly at 1-916-732-5560 or email