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Utah’s largest solar + battery storage project is officially online
Michelle Lewis | Jun 24 2026 - 4:25 am PT
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Photo: rPlus Energies
Utah’s largest solar and battery storage project is now officially generating electricity.
Developer rPlus Energies announced that the $1.1 billion Green River Energy Center in Emery County, Utah, is now commercially online. The commissioning ceremony took place on June 22. The project combines 400 megawatts (MW) of solar with a 400 MW/1,600 megawatt-hour (MWh) battery energy storage system.
The scale is impressive: Green River Energy Center is built with 993,492 solar panels and 484 Tesla Megapacks, making it the largest solar-plus-storage facility in electric power company PacifiCorp’s six-state service territory.
Photo: rPlus Energies
According to rPlus Energies, the project is expected to generate more than $55 million in property tax revenue for schools and public services. Construction also supported hundreds of jobs, including work performed by local contractors.<br>Advertisement - scroll for more content
Project partners said they committed $375,000 in scholarships for local students pursuing careers that will help strengthen the region’s workforce and energy industry.
The partners also announced a $45,000 donation to the Ferron Fire Department, which serves the area near the project.
Utah is working to increase electricity production through Operation Gigawatt, a state initiative launched in 2024 that aims to double energy production over the next decade to meet growing power demand.
Operation Gigawatt intends to rely mostly on advanced nuclear energy and geothermal energy, along with a mix of renewable and battery storage facilities. However, the state’s plan is not to shut down existing fossil fuel plants, but to add new power capacity to them rather than replace them.
Read more: California solar is crushing natural gas this year
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Michelle Lewis
michelle0728
Michelle Lewis is a writer and editor on Electrek and an editor on DroneDJ, 9to5Mac, and 9to5Google. She lives in White River Junction, Vermont. She has previously worked for Fast Company, the Guardian, News Deeply, Time, and others. Message Michelle on Twitter or at michelle@9to5mac.com. Check out her personal blog.
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