Video of the week: SolarCity goes South Pacific

Home to around 600 residents, Ta’u has historically been powered by diesel generators, each of which guzzles about 300 gallons a day. On top of that, the fuel needs to be transported to the island regularly, adding to both the cost and inefficiency of generation, and risking power outages when weather prevents ships from docking.

The new microgrid will solve many of these problems, meeting almost 100 per cent of the island’s energy requirements. Over the past year SolarCity has installed 5,328 solar panels, providing 1.4MW of capacity. Storage comes courtesy of Tesla, whose merger with SolarCity was confirmed this week. Sixty of its Powerpack’s will deliver 6MW hours of backup power, enough to keep the lights on in Ta’u for three days without sun. Just seven hours of sunlight is enough to fully charge the battery system.

“It’s always sunny out here, and harvesting that energy from the sun will make me sleep a lot more comfortably at night, just knowing I’ll be able to serve my customers,” said Keith Ahsoon, a Ta’u resident whose family runs a local food store.