Northern Illinois Geothermal

Cities Served

Wadsworth, IL; Beach Park, IL; Zion, IL; Old Mill Creek, IL; Winthrop Harbor, IL; Pleasant Prairie, WI; Grandwood Park, IL; Gurnee, IL; Lindenhurst, IL; Waukegan, IL; Park City, IL; Bristol, WI; Venetian Village, IL; Third Lake, IL; Gages Lake, IL; Antioch, IL; Lake Villa, IL; Kenosha, WI; Round Lake Beach, IL; Grayslake, IL; North Chicago, IL