SolarCity, the company Tesla officially acquired on Monday, is powering nearly the entire island of Ta’u in American Samoa with solar power.
SolarCity developed a microgrid with 1.4 megawatts of solar generation capacity — enough to power nearly 100% of the island, according to a SolarCity blog posted on Tuesday. The microgrid is enabled by 60 Tesla Powerpacks, the company's large commercial battery, which can store solar energy at night. The solar array is composed of 5,328 solar panels that can run the entire island on solar energy for three days. The system can fully recharge with just 7 hours of daylight.