Hawaiian Electric seeks regulatory approval for 300MW solar, 2,000MWh battery storage projects

LinkedIn
Twitter
Reddit
Facebook
Email
Artist’s rendering of one of the projects, the 185 MW / 565 MWh Kapolei Energy Storage (KES) project from developer Plus Power. It will be interconnected on the island of Oahu and is the largest of the awarded projects. Image: Plus Power.

Hawaiian Electric has submitted eight contracts representing nearly 300MW of solar energy generation and about 2,000MWh of energy storage to be built on the islands of O’ahu and Maui.

The investor-owned utility has sent the contracts to the Public Utilities Commission (PUC) for review and approval. The projects form part of Hawaii’s largest renewables tender, which closed earlier this year and saw a total of 16 projects selected.

Hawaiian Electric said the six O’ahu facilities are expected to provide enough generation and storage needed to retire the state’s only coal power facility, the 180MW plant at Campbell Industrial Park owned by AES, by September 2022. Meanwhile, the completion of two green energy projects on Maui will help enable the retirement of the 38MW oil-fired Kahului plant in 2024.

The capacity of the solar-plus-storage projects ranges from 7 – 120MW, while the lowest price is the Kahana Solar facility in Maui at US0.089/kWh.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

To see the full version of this story, including a table of projects and prices per kWh, visit PV Tech.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.
20 April 2027
Renaissance Dallas at Plano Legacy West Hotel, Dallas, Texas, Dallas
Policy, Procurement and Power Demand: Defining the Next Chapter for Energy Storage. Two days in Dallas where developers, IPPs, investors, utilities and the manufacturers building the technology come to close deals, not swap business cards. If you need to be in the room with the people deploying capital into US storage, this is that room.

Read Next

October 27, 2026
India has 5.3GWh of operational battery energy storage system (BESS) capacity, with a further 185GWh of projects under development, according to Prashant Bhamu, deputy director of integrated resources planning at the Central Electricity Authority (CEA), part of the Ministry of Power.
October 27, 2026
South Korean battery and electronics materials manufacturer Samsung SDI has signed a 1GWh supply agreement with US IPP Alpha Omega Power (AOP).
October 27, 2026
Vanadium redox flow battery (VRFB) startup Delectrik Systems has been awarded a 20MW/120MWh project in Gujarat, India.
October 27, 2026
Owner-operator Giga Storage has finalised financing for the construction of its 350MW/1,400MWh Albatross energy storage project near Neuenkirchen in Lower Saxony, Germany.
October 26, 2026
Heron Power and NiSource have separately announced US data centre-focused deals involving battery energy storage systems (BESS) in recent days.