Westpower Limited is an electricity distribution business based in Greymouth, New Zealand. The company owns and operates the electricity distribution network in the Westland and Grey districts, and part of the Buller District. The company is wholly owned by the West Coast Electric Power Trust. The company's distribution network consists of 2,300 km (1,400 mi) of lines, supplying electricity to approximately 13,700 customers. The network covers the towns of Reefton, Runanga, Greymouth, Hokitika, Ross, Franz Josef and Fox Glacier.