E.on says that its Texas Waves energy storage projects, co-located at the existing Pyron and Inadale wind farms in West Texas, have started operations.

Texas Waves consists of two 9.9 megawatt (MW) short-duration energy storage facilities that use lithium-ion battery technology. The batteries are intended to provide ancillary services to the Electric Reliability Council of Texas (ERCOT) market and can respond rapidly to shifts in power demand, improving system reliability and efficiency.

E.on hired Greensmith Energy for energy storage software and services and selected Primoris Renewable Energy for engineering, procurement and construction on the Texas Waves projects.

The projects are the second and third grid-connected lithium-ion battery systems installed by E.on in North America. E.on's first grid connected lithium battery system project, Iron Horse, contains a 10 MW energy storage facility with an adjacent 2.4 MW solar array near Tucson, Ariz. It came online in 2017.

E.on has developed, built and operates more than 3,600 MW of solar and wind renewable energy generation across the U.S.