Summary: The Cook Islands are set to launch their largest renewable energy storage project, combining solar power with cutting-edge battery technology. This article explores the project's goals, technical innovations, and its potential to transform energy security across Pacific Islands. With 85%. Located in the outer Cook Islands, Aitutaki's electricity system is small, isolated and has historically been reliant on imported diesel, making it highly vulnerable to global fuel price volatility, supply disruptions and the growing cost of maintaining fossil fuel-based generation. Recognising. A battery energy storage system (BESS) installed at the Te Mana Ra Solar PV facility, on the island of Rarotonga and connected to the electricity grid.