Wolverine Power Cooperative of Cadillac has agreed to co-partner on the retrofit of We Energies’ coal-fired power plant in Marquette. The cost to bring the Presque Isle Power Plant up to new federal environmental standards is estimated to be between $130 and $140 Million. Wolverine will become a minority owner of the plant, which We Energies will continue to operate. Alternatives under consideration had been to either convert the plant to natural gas or shut it down. Under the shutdown scenario it was predicted that a $1 Billion transmission line upgrade in the Upper Peninsula would have been necessary to adequately serve customers.