The unit of Jackson-based CMS Energy Corp. said AMEC, which has Michigan offices in Novi and Traverse City, will handle the work at seven power-producing units at the plants. AMEC's work includes extensive experience with power plant decommissioning.
Consumers Energy said the selection also is in line with a state program that encourages Michigan companies to do business with each other.
"As part of our commitment to Pure Michigan Business Connect, we're pleased to award this project to a company with an established Michigan presence," Dennis Dobbs, vice president of generation engineering and services for Consumers Energy, said in a statement.
Consumers Energy earlier announced plans to close and demolish the B.C. Cobb plant on Muskegon Lake as well as coal-fired units at its J.R. Whiting facility near Luna Pier in Monroe County and the Karn/Weadock complex near Bay City on the Saginaw Bay.
Consumers Energy plans to shut the units by April 2016.
The units being decommissioned represent about 950 megawatts of electric capacity. Consumers Energy recently announced a plan to purchase a 540 megawatt natural-gas power plant in Jackson to partially offset the planned coal-fired shutdowns.