Commonwealth Associates, Inc. is a U.S. engineering design firm headquartered in Jackson, Michigan. The firm provides engineering and consulting services services to utilities; independent power producers; government; industrial clients; and academic, research, and healthcare institutions. The company also provides environmental and permitting services, GIS mapping, land and right of way acquisition, and document management services. Commonwealth offers proprietary, interactive software for the analysis and planning of electric utility transmission systems. Commonwealth is employee-owned and managed. The company slogan is "Unleash the power of the nations top talent ™".