National energy group pumped storage power station

It is a power station that uses Helms Creek canyon on the North Fork of the Kings River for off-river water storage [1] and the pumped-storage hydroelectric method to generate electricity. Hidden in a granite cavern deep within California’s Sierra Nevada mountains sits the Helms Pumped Storage Power Plant. This hydroelectric marvel generates over 1,200 megawatts of power, helping to stabilize the grid during peak demand periods. The Helms Pumped Storage Plant is located 50 miles (80 km) east of Fresno, California, in the Sierra Nevada Mountain Range's Sierra National Forest. While the concept of pumped storage hydropower (PSH) is not new, adjustable-speed pumped storage hydropower (AS-PSH) is equipped with power electronics; thus, it has more capabilities and is more agile and flexible to integrate with modern power systems. With the rapid economic development in China,the energy demand and the peak-valley load difference of the power grid are.