Wisconsin utilities have proposed a handful of large-scale battery projects, and the Inflation Reduction Act provides new incentives for energy storage. Even so, supply chain constraints and challenges with connecting those projects to the grid may delay their expansion statewide.
Madison-based Alliant Energy recently announced it will spend $354 million to add 175 megawatts of battery storage. The two projects are linked to solar systems being built in Wood and Grant counties. Those projects are part of Alliant’s plans to build 1.1 gigawatts of solar systems approved by the Wisconsin Public Service Commission last year.
The two battery projects combined could store enough energy to power more than 180,000 homes for four hours. And, the recently passed Inflation Reduction Act will make it easier to build stand-alone projects, according to Rick Zimmerman, Alliant’s manager of resource development.