en.Wedoany.com Reported - On June 16, the CGN Golmud 350 MW Concentrated Solar Power (CSP) demonstration project commenced construction in the Wutumeiren Photovoltaic and CSP Park in Golmud City, Qinghai Province. As the CSP plant with the world's largest single-unit thermal storage capacity and the largest mirror field area, the project adopts a molten salt tower-trough hybrid technology route, achieving the large-scale application of CGN's independently developed complete set of equipment and processes for the world's largest aperture—8.6-meter—molten salt parabolic trough collector. This will provide a replicable and scalable solution for the large-scale development of China's CSP industry.
The total collector area of the mirror field for the CGN Golmud 350 MW CSP demonstration project reaches 3.7 million square meters, equivalent to the size of 518 standard football fields. It includes three tower mirror fields of 1.1 million square meters each and one parabolic trough mirror field of 400,000 square meters. The entire parabolic trough mirror field utilizes CGN's self-developed 8.6-meter large-aperture parabolic trough collectors.
Ding Yeliang, Deputy General Manager of CGN New Energy Holdings Co., Ltd., stated that this parabolic trough collector technology completed technical validation on April 21 at the Delingha CSP test base, achieving a concentration ratio of 107.5 times. It enables stable operation from a 290°C inlet to a 550°C outlet, with a thermal storage temperature difference of 260°C, which is 2.6 times that of traditional thermal oil systems. The core components of the entire equipment set—including the collector support structure, flexible connection assemblies, local controllers, and mirror surface accuracy and shape detection devices—were developed by CGN in collaboration with leading enterprises in China's industrial chain, achieving 100% independent control of key technologies.
Notably, the project is equipped with a 15-hour large-capacity molten salt thermal storage system with a storage capacity of 11,747 MWh, making it the CSP project with the largest single-unit thermal storage capacity. It can provide stable power generation and possesses excellent grid flexibility for peak shaving, effectively enhancing the efficiency of new energy integration in the Qinghai grid and the overall power supply reliability of the region. Upon completion, it is expected to generate up to 1 billion kWh of electricity annually, equivalent to saving 320,000 tons of standard coal consumption and reducing CO2 emissions by 860,000 tons, yielding significant ecological and environmental benefits.
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