At 18:25 on May 28, 2025, the 100MW solar thermal project of the Jinta Zhongguang Solar "Solar Thermal + PV" pilot project, organized and constructed by Cosin Solar Technology Co., Ltd. (a member of the CSTA), was successfully connected to the grid.
This project is part of the second batch of large-scale wind and solar energy bases in China, focusing on deserts, Gobi, and wastelands. It is located in the Baishuiquan Photovoltaic Industrial Zone in Jinta County, Jiuquan City. The total installed capacity of the project is 700MW, adopting a "solar thermal +" configuration mode, including 600MW of photovoltaic power and 100MW of solar thermal power, with a 9-hour molten salt energy storage system. After completion, the project is expected to deliver 1.45 billion kWh of clean electricity to the grid annually, save approximately 480,000 tons of standard coal per year, and reduce carbon dioxide emissions by about 1.36 million tons annually. It holds significant importance for promoting coordinated local economic and social development and reducing energy consumption and emissions.
The project employs complementary solar thermal and photovoltaic power generation technologies, achieving efficient collaboration and deep integration among different energy sources. It uses the tower molten salt CSP technology independently developed by Cosin Solar, realizing innovative optimization of large-scale concentrated heat collection systems and heat storage and exchange systems. The project also applies Cosin Solar 's unique low-position molten salt tank + short-axis pump technology solution for the first time, increasing the usable molten salt ratio from 85% to 90.3%, significantly reducing the design and manufacturing technical difficulties of the cold salt pump, and improving the reliability and maintenance convenience of the molten salt pump operation. This technology has obtained patent authorization in China and many other countries around the world. In addition, the project is equipped with a 20MW medium and high-pressure molten salt electric heater, which can fully absorb abandoned photovoltaic electricity to achieve bidirectional and rapid peak regulation functions.
Currently, Cosin Solar is involved in the construction of several "solar thermal +" large base projects in Xinjiang, Qinghai, and Gansu, which are being successively connected to the grid. This fully demonstrates the company's leading position in the field of solar thermal power generation. Moving forward, Cosin Solar will rely on its outstanding product delivery and project implementation capabilities to fully promote the grid connection and operation of the under-construction large base solar thermal projects.