Construction of Ngari Photovoltaic (PV) Power Station, the world's highest 10-MW PV power station, is complete and test runs are underway, a company source said Thursday. The PV power station in southwest China's Tibet Autonomous Region, is a joint investment between the central government and Guodian Longyuan Tibet New Energy Co., Ltd., with a total installed capacity of 10 MW and an expected working life of 25 years. Just 3 kilometers away from the center of Shiquanhe Township, seat of Ngari Prefecture, at 4,270 meters above sea level with an area of 357 mu (23.8 hectares), construction began on the site on July 1, 2012. Tibet has abundant solar energy with more than 3,000 hours of sunshine annually. PV power stations have been built in the regional capital of Lhasa and Xigaze.