158 Tesla Mega-Batteries Will Boost Hawaii Green Energy By 10%, And Shut Down Coal-Fired Power Plant

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Oahu aims to free itself from the shadow of a major coal-fired power plant with the introduction of 158 Tesla Energy Megapacks to installed for a 565 megawatt-hours project.

Recently, state power company Hawaiian Electric selected 16 renewable energy and battery storage projects located across three islands. Among them was Plus Power’s Kapolei Energy Storage project (KES) located in Kapolei on the island of Oahu.

Oahu and Hawai’i as a whole are looking to accelerate a transition to 100% renewable energy, with the former set to decommission a coal power plant that generates 15% of the island’s electricity through its 180 megawatt capacity.

KES matches this capacity, and can provide 565 megawatt-hours in total, making it one of the largest autonomous batteries in the world. The project will provide load shifting and fast-frequency response services to Hawaiian Electric, enhancing grid reliability and accelerating the integration of readily available renewable energy.

The 158 lithium-ion Megapacks come from Tesla Energy, the car maker’s green energy subsidiary, and the battery project is ideally located on roughly eight acres of land in the Kapolei Harborside industrial project, where it will interconnect at a critical Hawaiian Electric substation.

With such a big leap away from trusted power sources, one of the most critical design features is to ensure that, in the case of disaster, the grid is prevented from shutting down, and that “black-start capacity” or the ability to jolt the entire grid to life in case of an interruption, is sufficient for a modern day society. KES can deliver 50 megawatts of capacity out instantaneously in such an occasion.

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