Tesla Model X and a solar farm in Kauai, Hawaii. Photo: Meghan Reeder/CNBC

Tesla battery packs power the Hawaiian island of Kauai after dark

Power packs expected to save 1.6 million gallons of diesel fuel a year

Topic |   CNBC

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Tesla Model X and a solar farm in Kauai, Hawaii. Photo: Meghan Reeder/CNBC
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