光热发电如何破解成本难题?

Core Viewpoint - The development of concentrated solar power (CSP) in China is gaining momentum, with a target of reaching 15 million kilowatts of installed capacity by 2030, while addressing challenges such as high initial investment and market competitiveness [1][6]. Group 1: Current Projects and Developments - The Qinghai Energy Group's Qingyu DC Phase II 100,000 kW CSP project is continuously supplying electricity to the grid, showcasing the ongoing advancements in CSP technology [1]. - The Hami "Solar (Thermal) Storage" 1500 MW base project integrates 150 MW of CSP with 1350 MW of photovoltaic (PV) capacity, demonstrating the synergy between CSP and PV technologies [2]. - As of the end of 2025, China's operational CSP capacity is expected to reach approximately 1.62 million kW, ranking third globally, with 2.7 million kW under construction, accounting for over 90% of global CSP construction [3]. Group 2: Technological Advancements - China has successfully mastered various CSP technologies, including tower, trough, and Fresnel systems, with ongoing innovations such as the 800 MW PV + 100 MW CSP integrated project in Tibet [4]. - The development of the "four towers and one machine" supercritical 350 MW unit is underway, aiming for over 3000 hours of annual electricity generation [5]. - The domestic production rate of equipment and materials for CSP is nearing 100%, positioning China as a leader in the global CSP market [5]. Group 3: Cost Challenges and Policy Support - The average total investment for CSP projects of 100 MW and above is approximately 15,000 yuan per kW, which is about three times that of equivalent PV projects, leading to financial losses under current pricing conditions [6]. - The recent policy document proposes compensation for reliable capacity of qualifying CSP projects, which could significantly enhance the cost competitiveness of CSP [6]. - Qinghai Province has set a fixed grid price of 0.55 yuan per kWh for CSP projects included in its development plan from 2024 to 2028, providing a degree of certainty for the industry [6]. Group 4: Future Outlook and Strategic Recommendations - The industry is exploring various avenues for cost reduction, including expanding unit sizes, developing new types of molten salts, and optimizing mirror field designs, with potential cost reductions of 0.13 yuan per kWh in the next 3-5 years [7]. - To achieve the target of 15 million kW, efforts must focus on planning, implementation, and ensuring support for land, finance, and policy [7]. - CSP is expected to transition from a backup option to a key support role in the energy system, contributing to carbon reduction in conjunction with coal power and providing green electricity for various industries [7].