FERC ruled that WEPCo overcharged ratepayers on Michigan’s Upper Peninsula by almost $23 million under MISO-ordered SSR agreements.

FERC said MISO can continue doling out refunds to Wisconsin utilities, upholding the RTO’s new cost allocation methodology for three system support resource power plants in Michigan’s Upper Peninsula.

A group of Upper Peninsula electric users in MISO plans to ask FERC to investigate WEPCo. for allegedly falsifying records to increase its revenues under the Presque Isle SSR.

MISO said it would review a plan that could end the system support resource agreement for White Pine Unit 1 in Michigan’s Upper Peninsula.