New Zealand's largest off-grid solar power system is to be installed on Motutapu Island in the Hauraki Gulf.
The $768,000 renewable energy project is expected to generate at least 65,000 kWh per year, providing up to 70% of the energy requirements for Motutapu Island - a reserve administered by the Department of Conservation.
Power is provided by diesel generators at present, and the solar power system is projected to save $188,000 a year.
Department of Conservation Auckland area manager Brett Butland says the island is close to being predator free and the savings could be put directly into projects such as pest control.
Installation is due to begin next week.