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A huge battery has replaced Hawaii's last coal plant
Plus Power’s Kapolei battery is officially online. The pioneering project is a leading example of how to shift crucial grid functions from fossil-fueled plants to clean energy.
The combination of all these abilities in one site — capacity, grid services, black start — leads Keefe to call Kapolei “the most advanced battery energy storage facility on the planet.” This is the state that hit mass rooftop solar adoption first and crafted the first utility-scale solar-battery plant in Kauai (not coincidentally, Plus Power CCO Bob Rudd had a hand in that project during his tenure at Tesla). They also are faster and more precise — Keefe likened the Kapolei battery to a zippy electric sports car compared to the lumbering diesel bus of old thermal plants.
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