Xcel Energy to add iron-air battery system to store electricity in Becker

A sign marks an entrance to the Sherburne County Generating Plant.
A sign marks an entrance to the Sherburne County Generating Plant, known as Sherco. Plant owner Xcel Energy announced plans to install an iron-air battery storage system at the site of the plant, which will be retired by 2030.
Kirsti Marohn | MPR News