Municipal
- Portland Water District
- Town of Scarborough, Maine
- City of Portland, Maine
- Sanford Sewerage District
Power Generation
- Algonquin Power
- Boralex Power
Pulp & Paper
- Sappi Fine Paper – Maine Sites(3)
- Cascade Fiber – Auburn, Maine
Forest Products
- Floatation Technologies
- Red Mill Lumber
Manufacturing
- Floatation Technologies
- Cyro
- Dielectric
