Renewables developer rPlus Energies has broken ground on one of the largest solar + battery storage projects in the US, in east-central Utah.

The Green River Energy Center in Emery County, Utah, is a 400-megawatt (MW) solar and 400 MW/1,600-megawatt-hour battery storage project that will supply power to western electric utility PacifiCorp under a power purchase agreement.

EliTe Solar is supplying solar panels, and Tesla is providing battery storage. Sundt Construction is the engineering, procurement, and construction contractor for the project.

Securing over $1 billion in construction debt financing in July, the Green River project is expected to create around 500 jobs. Salt Lake City-based rPlus Energies gives the target completion date as 2026.

According to the Solar Energy Industries Association (SEIA), as of Q2 2024, Utah has nearly 3.5 GW of solar installed. It forecasts another 6.1 GW will be installed in the state over the next five years, moving it from 13th to 11th for national ranking.

According to the US Energy Information Administration, in 2023, 46% of Utah’s electricity net generation came from coal-fired power plants, down from 75% in 2015.

Read more: The US government opens up more federal lands for solar – to 31 million acres


To limit power outages and make your home more resilient, consider going solar with a battery storage system. In order to find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. They have hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use and you won’t get sales calls until you select an installer and you share your phone number with them.

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisers to help you every step of the way. Get started here. –trusted affiliate link*

FTC: We use income earning auto affiliate links. More.