While the China government has been promoting PV power generation, there is a potential problem that the capacity of its power transmission systems in areas where large PV power-generating stations are concentrated is not enough to transmit the electricity to other areas with large power demands, according to China's National Energy Administration (NEA).
As of the end of 2013, there were 741 PV power-generating stations on grid around China and over 60% of them were located in the northwestern region, mainly Gansu, Qinghai and Xinjiang Provinces, NEA indicated.
Since power transmission capacity is insufficient, it has been necessary to scrap already generated power or reduce generation, NEA said. In Gansu, for example, PV power-generating stations had a total installation capacity of 4.298GWp as of the end of 2013 and as much as 303 million kWh was scraped, accounting for 13.78% of total electricity generated in 2013, NEA indicated.
