A Clean Energy Project

Kūpono Solar is proposed for development by Ameresco Inc. and Bright Canyon Energy Corporation, which would construct, own and operate 42 MW of clean, renewable solar energy. The project would connect to Hawaiian Electric Company’s Oʻahu grid for 20 years. When complete, the project’s renewable energy will supply power to Oʻahu’s local grid, powering 10,000 homes, reducing more than 50,000 tons of carbon dioxide annually from Hawaiʻi’s environment – equivalent to offsetting carbon dioxide emissions from 12,000 cars every year.

Field Solar Panels Collectors Sea

Project Details

  • 42 MW of photovoltaic solar array and 42 MW/168 MWh (four-hour duration) of lithium-ion batteries housed in a state-of-the-art containment system that includes around-the-clock monitoring, cooling and fire suppression systems
  • The project site would also have structures to house the controls for system and maintenance

The proposed project would be secured by fences in compliance with Department of Navy standards and meet all permitting requirements.


Kūpono Solar is proposed for construction on approximately 131 acres of underutilized lands within the Navy West Loch Annex of Joint Base Pearl Harbor-Hickam. The Kūpono Solar team has been selected by the Department of the Navy to develop the site. Site boundaries and design are preliminary and subject to change.

Proposed project site plan

West Loch, Pearl Harbor, Oʻahu, Hawaiʻi and will utilize portions of TMK (1) 9-1-010-122,
TMK (1) 9-1-010-011
and TMK (1) 9-1-001-031

Kūpono Solar Project Site Map

Proposed site layout plan

  • Over 100,000 photovoltaic solar panels mounted on a low-profile tracking system
  • Battery energy storage housed in containers
  • Medium voltage switchgear, transformers and inverters
Kūpono Solar Site Layout

Proposed interconnection map

Connects to existing Hawaiian Electric 46kV overhead line

Kūpono Solar Interconnection Map
Location Map
Site Layout Plan
Interconnection Map