Array of PV panels at the Isle Royale National Park.
Lightbulb illustrating 100%.

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.

LocationHoughton, Michigan
System TypePhotovoltaic (PV) hybrid system
System Size91.8 kW (Rock Harbor), 42.1 kW (Windigo)
Installation Cost$2.6 million (phases 1 and 2)
Project Completion2014, 2015
Project Savings$122,400 (estimated) diesel fuel cost savings for Phases 1 and 2
Load Service AreaRock Harbor and Windigo developed areas
Project ChampionsPhyllis Green, Betsy Rossini, and Keith Butler
FEMP AssistanceDesign 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.

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