The Sweetwater Solar PV Park is a 97.8-megawatt photovoltaic power station located in Sweetwater County, Wyoming, approximately 11 miles northwest of Green River, along State Highway 372. The project, developed by Clenera, Energy of Utah, was commissioned in December 2018.[2] Covering an area of 703 acres, it generates approximately 186,575 megawatt-hours of electricity annually—enough to power 17,000 households while offsetting 44,000 metric tons of carbon dioxide emissions each year.[2]
As of 2025, the park is the largest single solar energy facility in Wyoming
Planning
Sweetwater County Commissioners unanimously supported the project, which is located primarily on federal land managed by the Bureau of Land Management (BLM).[4] Wildlife impact studies and mitigation strategies were incorporated into the project to address concerns regarding birds, bats, and other native species such as bighorn sheep and pronghorn.[4]
Construction
The $157.7 million project uses ground-mounted single-axis tracker solar panels supplied by Nextpower (then known as Nextracker) and 250,000 photovoltaic modules manufactured by Hanwha Q CELLS. It also utilizes 30 inverters from Sungrow Power Supply.[2] Construction began on July 1, 2018, and was completed within six months, creating up to 300 jobs during the process.[1]
The electricity generated by the park is sold to Rocky Mountain Power under a 20-year Power Purchase Agreement (PPA). The site was chosen for its open space, proximity to energy infrastructure, and its alignment with Wyoming’s push towards renewable energy.[4]
Average monthly solar energy production in megawatt-hours at Sweetwater Solar PV Park in Wyoming
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