Madison Gas and Electric has purchased a solar and battery storage plant with combined capacity of 465MW with WEC Energy Group.

Wisconsin’s Public Service Commission has approved Invenergy 300MW solar farm, to be paired with a 165MW battery energy storage system.

Renewable Energy Systems ranks alongside US firm AES at the top of a new leader-board of energy storage systems integrators; its two new National Grid contracts will see it top the table, it says.