The developer of a proposed solar farm in Iowa County is planning a second solar farm in Kenosha County that could feature the first utility-scale battery storage in Wisconsin.

Chicago-based Invenergy last week submitted an engineering plan for a 200-megawatt solar farm with a 50-megawatt battery component.

That’s larger than any battery currently deployed on the nation’s power grid and the first in the state of Wisconsin, according to data from the U.S. Energy Information Administration.