MN8 Energy, Eos Energy Enterprises and Google recently unveiled plans for a project in West Virginia that combines 86 megawatts of utility-scale solar, 10 MW/100 MWh of zinc-based long-duration energy storage, and 70 MW/280 MWh of lithium-ion energy storage.
The project, which will be owned and operated by MN8, will be built on a reclaimed coal mine in West Virginia.
"The integrated portfolio adds new clean, dispatchable capacity to the grid serving Google’s data centers in the region, including a planned project in West Virginia," a news release noted.
The solar project is expected to reach commercial operation in 2028, with lithium-ion storage and long-duration storage following in 2029 and 2030, respectively.
MN8 custom-designed its Mammoth Solar project in Kanawha County, West Virginia as an integrated utility-scale solar system with short- and long-duration storage that converts intermittent renewable generation into a single, dispatchable resource.
"The multi-technology solution fills a critical grid need by delivering clean capacity matched to data center load profiles. It’s the first commercial-scale long-duration energy storage deployment in West Virginia," the news release said.
Google will purchase the energy, capacity, and clean energy attributes of the project, advancing the company’s commitment to bring new capacity to the grids where it operates.
The project is part of Google’s broader efforts to accelerate long duration energy storage technology commercialization with the aim to rapidly bring its potential to communities everywhere.
The project marks Google’s first project that uses Eos’ American-made Z3™ technology and the first project under a previously announced MN8-Eos Master Supply Agreement.
The 10 MW/100 MWh system is designed to provide 10 hours of storage, extending the availability of solar generation beyond the shorter-duration energy storage resources and enabling the combined portfolio to deliver dependable capacity across more hours of the day.
This project will prove how Eos’ aqueous zinc chemistry can support critical grid infrastructure, the news release said.
