The island of Isleboro, Maine, relies on the mainland for electricity and experiences regular energy outages due to extreme weather. The Energy Committee wanted to identify local, low-cost energy production options that would help the island become more self-sufficient, reach 100 percent fossil-free energy by 2030, and benefit all island residents. Through ETIPP, PNNL partnered with the Island Institute to perform a techno-economic analysis that identified the optimal renewable energy options to help Islesboro reach its goals. Identified strategies included electrification and energy efficiency, grid improvements, local renewable energy generation, and microgrids.