Impressive CSP plant record: 96 Hours in China Proven
A groundbreaking operational trial in China’s Xinjiang region has set a new standard for Concentrated Solar Power (CSP) reliability. The 100MW molten salt tower CSP plant, part of Tangshan Haitai’s 1GW Qiquanhu PV Industrial Park in Turpan City, has successfully operated continuously for 96 consecutive hours, demonstrating the technology’s powerful potential for providing stable, baseload renewable energy.
The record-setting performance took place during a test in April 2026. According to reports, the trial commenced at 00:04 on April 7 and concluded at 00:23 on April 11. Throughout this four-day period, the plant not only ran safely and consistently but also surpassed its original full-load operational goal of 72 hours, achieving daily generation levels of over 1 million kWh.
The Technology Behind the Impressive CSP plant record: 96 Hours in China Proven
This remarkable feat is made possible by the plant’s advanced molten salt tower technology. A large field of computer-controlled mirrors, or heliostats, tracks the sun and concentrates its thermal energy onto a central receiver atop a tower. This intense heat is used to raise the temperature of molten salt, which is then stored in insulated tanks.
This stored thermal energy functions as a massive battery, allowing the plant to generate electricity on demand. By dispatching the hot salt to create high-temperature steam that drives a turbine, the facility can produce power long after sunset and through inclement weather, effectively decoupling power generation from the immediate availability of sunlight. It is this integrated thermal energy storage (TES) that enabled the unprecedented 96-hour continuous run.
A New Benchmark for Grid Stability
The achievement at the Tangshan Haitai facility is a significant milestone for China’s energy transition. By proving that CSP can deliver dispatchable power around the clock, it establishes the technology as a viable alternative to conventional fossil fuel plants for ensuring grid stability. This capability is crucial as the country integrates larger shares of intermittent renewables like wind and solar PV.
Key takeaways from this operational record include:
- Proven Dispatchability: The four-day continuous run provides concrete evidence of CSP’s ability to function as a reliable power source, available 24/7.
- Overcoming Intermittency: Unlike other solar technologies, CSP with TES directly addresses the challenge of intermittency, providing a stable output that can support the electrical grid.
- Global Significance: This new record sets a high bar for CSP projects worldwide, highlighting the maturity of the technology and encouraging further investment and deployment in the sector as a key tool for decarbonization.
The performance of the Xinjiang plant stands as a powerful testament to CSP’s role in building a resilient and clean energy future, showcasing how solar power can be harnessed to provide constant, reliable electricity for modern grids.
Sources
- Dunhuang’s first 100MW molten salt tower solar-thermal power …
- Mongolian Concentrated Solar Power generated round the clock …
- China Solar Project Showcases Green Development, Livelihood Gains
- Turning mountains into power plants. Large-scale solar farms are …
- Dongfang delivers heliostats for the highest altitude CSP Project in …
- Tower CSP at Tangshan Haitai’s massive solar park runs a record …
