Michigan

DTE Energy - Warren Service Center - Detroit, Michigan

DTE Energy Co - Melvindale, Michigan

Energy Products - Madison Heights, Michigan

Power Source Electric - Clio, Michigan

Ardent Natural Gas, LLC - Detroit, Michigan

Streamline Electric, Inc. - Detroit, Michigan

Energy Group, Inc. - Detroit, Michigan

Woodward Energy Solutions - Detroit, Michigan

CRESIT Energy - Wyandotte, Michigan

Walker-Miller Energy Services - Detroit, Michigan