| Location | Houghton, Michigan |
| System Type | Photovoltaic (PV) hybrid system |
| System Size | 91.8 kW (Rock Harbor), 42.1 kW (Windigo) |
| Installation Cost | $2.6 million (phases 1 and 2) |
| Project Completion | 2014, 2015 |
| Project Savings | $122,400 (estimated) diesel fuel cost savings for Phases 1 and 2 |
| Load Service Area | Rock Harbor and Windigo developed areas |
| Project Champions | Phyllis Green, Betsy Rossini, and Keith Butler |
| FEMP Assistance | Design development, design review, funding assistance, and system performance evaluation |
In 2011, NPS utilized an energy savings performance contract (ESPC) for a two-phase sustainability and solar PV project at isolated locations within Isle Royale National Park. Phase 2 consisted of hybrid PV/diesel power generation at the Rock Harbor and Windigo developed areas. The Rock Harbor and Windigo PV arrays are both paired with diesel generators to handle seasonal loads.
The two project phases at Rock Harbor and Windigo developed areas were funded 100% by innovative third-party funding—no upfront costs were paid by NPS.
