Alliant Energy announced the successful grid connection of its first 100-megawatt Battery Energy Storage System (BESS). The BESS is installed in Grant County, adjacent to the company's 200-megawatt solar project. The newly commissioned battery captures and stores excess energy generated by solar and other resources, and then releases it back into the grid when needed.

"Energy storage systems like these complement our existing generation resources and are an important step towards creating a smarter, more resilient grid," said David de Leon, president of Alliant Energy Wisconsin Energy Company. "The combination of BESS and solar energy is a crucial component of our balanced energy portfolio. Together, they offer tremendous potential, adding value and flexibility while ensuring reliable and cost-effective energy for our customers."

This BESS system can supply power to over 100,000 households for up to four hours after a single charge.

Energy storage infrastructure is a relatively new component of Alliant Energy's strategy and a crucial aspect of bolstering its renewable energy investments. Battery storage enables Alliant Energy to meet demand, reduce the need for traditional grid updates, and ensure preparedness in the event of power outages and severe weather conditions.