Where does great lakes energy provide service? We provide service at our Boyne City headquarters and seven service centers throughout our rural Michigan service territory. Great Lakes Energy (GLE) is one of the largest electric cooperatives in the nation and the largest cooperative in the state of Michigan.Where is great lakes educational loan services located? Student Loan Customers; Financial Aid Professionals; Business Partners; Our Sites; Student Loan Customers; Financial Aid Professionals; Business Partners; Terms of Use How do i make a complaint about a great lakes service? We encourage you to try to resolve any issues you encounter by contacting a Great Lakes representative first. If you've already done so and are not satisfied with the service you've received, please share your concern with us by filing a formal complaint.Where is great lakes insurance located in pennsylvania? Great Lakes Insurance (Home Office) 3205 Peach Street Erie, PA 16508 215 Pennsylvania Ave East Warren, PA 16365 2404 East Lake Road Erie, PA 16511 211 East Main Street Youngsville, PA 16371 9401 Mcknight Road, Suite 303B Pittsburgh, PA 15237 One Northgate Square, Suite 211 Greensburg, PA 15601 562 Clymer Sherman Road Clymer, NY 14724