The array, expected to be operational in late 2015, will connect directly to the grid via Hawaiian Electric’s 46,000-volt sub-transmission system at the Kahe Generating System, meaning there will be no impact on the distribution system.

A year ago California-based SolarCity was chosen to build a 12MW (AC) array for the Kaua’i Island Utility Cooperative.

Although only the 40th most populous US state, Hawaii has the country’s eighth highest installed PV capacity, with its high energy costs driving a local solar boom in recent years.

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