Residential
30,000+ individual residential systems

Commercial
Coastal Maine Botanical Gardens in Boothbay, Inn By The Sea, Backyard Farms, Central Maine Power, Sugarloaf/USA, Florida Light & Power, Point Sebago, Tom’s of Maine, Funtown USA, Maine Wild Blueberry Company, Endless Energy, P & K Excavating, Maine Yankee, First Wind, Liberty Group, Hannaford, Pineland, MBNA, Cook's Lobster House, Bentley's Saloon & Campground, Bayley's Camping Resort, VIP Autoparts, Dunkin Donuts, Rite Aid, Portland International Jetport

Municipal
Town of Falmouth, Town of Brownfield, Town of Harpswell, Town of Fryeburg, Town of Long Island, Town of Lubec, City of Eastport, City of Portland, Town of Tisbury, Massachusetts, Passamaquoddy Indian Tribe, Town of Lovell, Town of Cornish, Town of Bridgton, Town of Wells, Town of Windham, Town of West Bath, Town of Yarmouth, Town of Rangeley, Town of Cape Elizabeth, Town of Kennebunk

State
Maine Department of Environmental Protection, Maine Department of Inland Fisheries & Wildlife, State Planning Office, Maine Department of Environmental Health

Federal
United States Navy, United States Coast Guard, President George H.W. Bush, Department of Homeland Security, United States Postal Service

Colleges & Schools
Bowdoin College, Colby College, Gorham High School, Saint Joseph's College, Noble High School, Cornell University, Elan School, Vasselboro Elementary School

Miscellaneous
Appalachian Mountain Club, Kennebago Camps, Gorham Trails, Pilgrim Lodge, Ram Island Farm, Habitat for Humanity, French's Camps, New England Music Camp, Sebago Homeowner's Association, Maine Audubon Society, Animal Welfare Society

Charities
Berry Memorial Library, Damariscotta River Association, Engineers Without Borders, Gorham Food Pantry, Habitat for Humanity, Maine Audubon Society, Nature Conservancy, Opportunity Alliance (n/f PROP), Portland Evergreen Cemetery, Save Sebago Cove, Rachel Carson, Camp Sunshine