On April 7th, the solar thermal power generation sector experienced a limit up trend. As of the close, Jiusheng Electric had a 20% limit up, while Shouhang High Tech, Xizi Clean Energy, 3D Chemical, and Ancai High Tech had a limit up. Shares such as Wanxun Automation, Chuanrun Group, and Keyuan Smart had the highest gains. On the news, the National Energy Administration recently issued a notice on matters related to promoting the large-scale development of solar thermal power generation from the Comprehensive Department of the National Energy Administration. The notice states that it is necessary to actively carry out research on the large-scale development of solar thermal power, combine with the construction of new energy bases in deserts, Gobi, and desert areas, implement and approve solar thermal power generation projects as soon as possible, and promote the large-scale development of solar thermal power generation, Strive for the 14th Five Year Plan During this period, the annual start-up scale of solar thermal power generation in China reached about 3 million kilowatts. 

Compared to traditional forms of power generation and photovoltaic power generation, solar thermal power generation has advantages such as excellent power quality, low grid connection barriers, and energy storage and peak shaving. According to IEA predictions, the Chinese solar thermal power generation market will reach 29GW of installed capacity by 2030, 88GW by 2040, and 118GW by 2050, indicating broad growth potential for solar thermal installation. In addition, the notice It was also mentioned that the solar thermal power generation industry has a long chain, which can digest and improve traditional industries such as special glass, steel, cement, molten salt, and drive the development of emerging industries such as new materials, precision equipment, and intelligent control. The large-scale development and utilization of solar thermal power generation will become a new growth point for China's new energy industry The new direction of the track, the curtain of light and heat development is slowly opening up the essence of the thermal power station is low-cost heat storage. 

Photothermal system is a form of energy storage that collects solar energy through a condensing device and uses it for industrial heat or power generation. Its heat is easy to preserve for a long time, and its price is cheap, which is increasingly widely recognized in the market. At the beginning of the design, the solar thermal power station was positioned as a low-cost supplier of green hydrogen and synthetic fuel. However, with the vigorous promotion of photovoltaic power stations, the new trend of the development of the solar thermal power station is to be built in combination with photovoltaic power stations, and become a large optical storage base integrating photovoltaic power generation and solar thermal energy storage. Photovoltaics can provide cheap electricity during the day, while photothermal energy stores heat in energy storage devices and releases and transports it in the form of electricity at night. Other hybrid 

photovoltaic/photothermal designs include utilizing excess electricity generated by photovoltaics during solar peak periods to further heat the photothermal molten salt system located at the same location. Domestic tower power generation projects are mainstream. Tower thermal power generation is to build several large solar reflectors, namely heliostat, on a large optical storage base, and follow the matching tracking device on the surface of heliostat. It can accurately concentrate sunlight reflection onto a receiver at the top of a tall tower, with a focusing magnification of over 1000 times The construction of the optical thermal power station has a long industrial chain, which has a strong pulling force for the industry. From the perspective of the industrial chain, it includes six major links: preliminary preparation, basic materials, solar thermal equipment manufacturing, power station EPC, power station operation and power 

transmission and distribution. According to the construction process of the optical thermal power station, it can be divided into five major links: research and design, system integration, light gathering, power generation, heat absorption, heat storage and exchange. Among them, the system integration link can be subdivided into heat collection, heat storage and power generation system integration, and the light gathering link can be subdivided into ultra white glass (original piece), reflector, heliostat, trough condenser, support, tracking device, etc. The power generation link needs steam generator, steam turbine, generator, cooling system, etc. The heat absorption and storage and exchange link needs heat absorber (tower)/heat absorption tube (trough), molten salt, molten salt storage tank Electric heat tracing/heater, heat exchanger, and insulation materials. At present, although China's solar thermal power generation industry chain is complete, compared to other renewable energy sources, China's solar thermal power generation industry started late and lacks project experience. 

The planning and construction of solar thermal power generation projects have not been fully relaxed. As an emerging industry in its early stages of development, the core links of the solar thermal power generation industry chain lie in equipment manufacturing and power station EPC. The solar thermal power generation industry chain and major participating manufacturers: From the initial investment cost, the unit kilowatt investment cost of solar thermal power stations is between 25000 and 35000 yuan, which is 3-4 times that of traditional coal-fired power stations, 3-4 times that of onshore wind power stations, and 4-5 times that of photovoltaic power stations. The fixed investment of key solar islands and heat storage islands accounts for 50% -60% and 15% -20%, respectively. The longer the heat storage time, the higher the investment cost. In terms of the cost of electricity per kilowatt hour, according to industry estimates, the cost of electricity per kilowatt hour of tower type optical thermal power station is about 1 yuan/kWh, equivalent to 3-4 times of coal power, 2.3 times of onshore wind power, and 1.4-2 times of photovoltaic power generation.

 Reducing costs and improving efficiency is a necessary path for solar thermal power generation: based on the cost composition of tower solar thermal power stations, the three main drivers affecting cost electricity prices are: capacity scaling effect, operation and maintenance costs, technological progress, and management optimization. It is expected that in the future, the cost price of solar thermal power stations will be comparable to that of coal-fired fossil-fuel power station, with broad application prospects and growth space The solar thermal power generation industry is in its infancy, and many companies are frequently engaged in solar thermal power generation, which is a capital and technology intensive industry. The industry threshold is high. The state-owned enterprises and several major power groups will invest in solar thermal power plants as the main promoters and leaders because of their strong financial 

strength and mature experience in the construction of fossil-fuel power station. In addition, the system integration of solar thermal power generation projects is difficult, requiring high technical level and project experience from enterprises. However, most domestic enterprises lack system integration experience in large-scale solar thermal projects, resulting in the concentration of industry development dividends towards integrators. The main participating manufacturers in the domestic solar thermal power generation industry chain include Shouhang High Tech (power station investment and EPC, air cooling island), 3D Chemistry (heat storage island EPC), Shanghai Electric (power station investment and EPC), Aikang Technology (power station investment and EPC), TBEA (power station investment and EPC), Jintongling (automotive turbine), Shandong Beichen (steam generator and heat exchanger), Jinjing Technology (reflector ultra white glass raw material) Luoyang glass (reflector ultra white glass original sheet), Jiuli special materials (supply of special pipes for photothermal power generation), etc. In terms of listed companies, Ancai High Tech stated in December 22 that it had reached cooperation with the domestic 100MW solar thermal power generation project; Shouhang High Tech also announced multiple times in December that it had jointly won multiple projects. In terms of increment, currently, there are 29 solar thermal power generation projects in the list of large-scale wind power photovoltaic base projects, market-oriented grid connection of new energy, and DC transmission projects announced by local governments (excluding projects that enterprises are operating or planning to construct), covering four provinces (districts) of Xinjiang, Qinghai, Gansu, and Jilin. 

In terms of advantages, photothermal power generation has the function of peak shaving due to its built-in energy storage. Therefore, through peak shaving operation, it can enhance the power system's ability to absorb renewable energy electricity and reduce power losses caused by wind and solar abandonment. In terms of site selection, the key factor for the construction of solar thermal power generation is solar energy resources. Generally, the minimum annual DNR (average solar normal direct radiation) for the site selection of solar thermal power station is more than 1800kWh/m2. There are abundant solar direct radiation resources in southwest Tibet, northern Qinghai, northwest Gansu, northern Inner Mongolia, and eastern Xinjiang in China. In terms of cost, the cost reduction path for photothermal power generation is also relatively clear, and the cost reduction speed exceeds expectations. According to bidding data, the investment in solar heating has decreased from 22000 to 40000 yuan/KW before 2021 to the latest 16500 to 19000 yuan/KW, with a rapid decline rate. With the rapid decline of photovoltaic and solar thermal investment costs, the "solar thermal+photovoltaic" power generation system will become the first choice for distribution and storage in northwest China, which is rich in solar thermal energy resources.