People’s Daily Online, Beijing, September 19 According to an announcement from the China Three Gorges Corporation (CTG), the nation’s largest Linear Fresnel solar thermal integrated energy demonstration project – the Hami 1-million-kilowatt “Solar Thermal + Photovoltaic” Project – achieved full-capacity grid connection on the 18th. With an average annual electricity generation of 2.067 billion kilowatt-hours, the project is estimated to save approximately 620,000 tonnes of standard coal and reduce carbon dioxide emissions by over 1.63 million tonnes annually. This project pioneers a new cooperative operation model of “solar thermal + photovoltaic,” further enhancing the power grid’s capacity to integrate renewable energy.
Currently, China’s installed capacity of new energy continues to expand. However, the “intermittent and unstable output” of photovoltaic and wind power, influenced by natural conditions, has become a bottleneck restricting the grid’s absorption capacity.As an “energy buffer,” new energy storage technology is a crucial pathway for ensuring the reliable 24/7 operation of the power system and a key support for building a new type of power system. Among these technologies, “Linear Fresnel” is a concentrating solar power (CSP) technology within the field of solar thermal energy storage. It achieves efficient conversion and stable utilization of solar energy through four key stages: concentrating, heat collection, heat storage, and power generation.
According to on-site technical personnel, 260,000 mirrors are arranged in order within the plant, precisely reflecting scattered sunlight onto overhead heat collection pipes. This heats the molten salt inside the pipes to 550 degrees Celsius, and the high-temperature molten salt is then transported to molten salt thermal storage tanks for storage. When electricity generation is required, the high-temperature molten salt releases thermal energy to heat water, converting it into high-temperature, high-pressure steam. This steam drives a steam turbine at high speed, which in turn powers a generator, enabling up to 8 hours of stable electricity generation. This process achieves a fully carbon-neutral chain of “solar energy – thermal energy – electrical energy” conversion.
“Compared to traditional tower-type solar thermal power plants, the Linear Fresnel system does not require the construction of an absorber tower. The mirror and heat collection pipe designs are simpler and more modular, which not only reduces material and construction costs and shortens the construction cycle but also offers greater flexibility in site selection,” said Niu Jianle, the project manager. He added that after grid connection, the project will effectively serve as a peak-shaving foundational regulating power source. Together with the photovoltaic power station, it will form a multi-energy complementary clean energy base, effectively enhancing the stability and controllability of the power plant’s output, thereby helping to increase the grid’s capacity for accepting new energy sources.
Congratulations to China Three Gorges Corporation on the successful grid connection of the Hami Project! The stable operation of such integrated “solar thermal + photovoltaic” power stations relies heavily on intelligent operation and maintenance support. As a national high-tech enterprise specializing in solar cleaning robots and smart O&M solutions, Multifit looks forward to collaborating with industry partners to enhance the power generation efficiency and operational reliability of new energy power plants.
Multifit is headquartered in Beijing, with its production base located in the National Hi-Tech Industrial Development Zone in Shantou, Guangdong, and a branch office in Shenzhen. The group comprises subsidiaries including Multifit Power, Multifit Solar, and Multifit Smart Grid, dedicated to R&D, production, sales, PV power plant construction, and smart O&M services in the green energy sector.
The company’s core business covers the technical research, production, and system integration of solar cleaning robots and supporting equipment, PV inverters, portable solar power stations, MPPT solar charge controllers, solar LED street lighting systems, and related products. It also provides end-to-end solutions for solar power system projects and electrical automation projects, including design, development, investment, construction, as well as intelligent cleaning and O&M services for PV power plants.
Post time: Sep-29-2025