Prudential Locations LLC said it has selected a unit of Hoku Scientific Inc. to install an electricity-generating photovoltaic system at the real estate company's headquarters in Honolulu.

The 87-kilowatt system is expected to generate more than 136,000 kilowatt hours of solar energy each year, according to a joint news release from the two companies. The system is part of an ongoing renovation at Prudential's flagship location on Kapahulu Avenue.

Once installed, the system is expected to produce enough electricity over its lifetime to power the equivalent of 382 homes for one year, and offset nearly 2,160 tons of carbon dioxide emissions, the equivalent to about 139 cars from Hawai'i's roadways.

Hoku's shares closed down 30 cents at $5.76 yesterday on the Nasdaq stock market.