US Navy plans to build 44MW solar-plus-storage project in Kauai

LinkedIn
Twitter
Reddit
Facebook
Email

Kauai, Hawaii. Flickr user: tdlucas
The US Navy plans to develop a utility-scale solar farm and energy storage system on the 863.6 hectare Pacific Missile Range Facility on the island of Kauai, Hawaii, according to a draft environmental assessment.

The solar PV system would generate 44MW of clean energy into the Kauai Island Utility cooperative’s grid for use by the public and the military. It will be constructed over two phases of 21MW and 23MW respectively, expecting to break ground in December. Details about the energy storage part of the project were not detailed in the assessment.

However, it did say that the batteries would be used to store solar power generated during the day for use at night and further reduce the need for the island’s expensive diesel generators and provide stable generation. Together, the solar and storage would provide electricity in the event of a power outage, as well as help reach the Navy’s renewable energy goals.

This project is reportedly one of three solar-plus-storage offerings to be built under an understanding between the Navy and the California Energy Commission, pursuant to a MoU signed in October.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

Not ready to commit yet?
  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

The islands of Hawaii have an ambitious 100% renewable energy by 2045 plan, with other recently announced projects including a 52MWh utility-scale energy storage system by Tesla-SolarCity and a 20MW, five-hour duration battery energy storage system paired with 28MW of solar by AES, both on Kauai.

Read Next

September 12, 2025
Dutch BESS operator Return has acquired four ready-to-build (RTB) projects in Germany, while agrifood tech and renewables investor N2OFF has added BESS to a solar project it is developing there.
Premium
September 8, 2025
Energy-Storage.news Premium speaks with Ryan Hledik, Principal at the Brattle Group, and Lauren Nevitt, Senior Director of Public Policy at Sunrun, on the shaky future of California’s Demand Side Grid Support distributed storage programme.
September 3, 2025
During the morning of 30 August 2025, the California Department of Forestry and Fire Protection (CAL FIRE) responded to a possible vegetation fire in the area of independent power producer (IPP) Arevon Energy’s California Flats solar-plus-storage project.
September 2, 2025
Energy-Storage.news speaks with Karina Hershberg, Associate Principal at engineering firm PAE Engineers, on integrating microgrids with sustainable building design.
August 21, 2025
ACE Power has confirmed the sale of the 103MW/206MWh Kerang grid-forming BESS in the Loddon Valley region of Victoria, Australia.

Most Popular

Email Newsletter