Tangshan Haitai Solar Park’s CSP Plant Achieves 96-Hour Record in China

A new benchmark for renewable energy reliability has been set in China. The 100 MW molten salt tower Concentrated Solar Power (CSP) plant at the Tangshan Haitai Solar Park in Hebei province has successfully completed a record-breaking 96 hours of continuous, stable power generation, marking a significant milestone for the country’s clean energy sector.

This remarkable achievement, spanning four full days and nights, showcases the immense potential of CSP with thermal energy storage to overcome the intermittency challenges often associated with renewable sources like solar photovoltaics (PV) and wind.

Achievement of the CSP plant record: Four Days of Power

The plant’s ability to operate continuously for 96 hours demonstrates its capacity to function as a stable, dispatchable power source, akin to a traditional thermal power plant. By generating electricity through day and night, regardless of direct sunlight, the facility proves the maturity and reliability of modern CSP technology.

This operational record is not just a testament to the plant’s design and engineering but also a powerful statement about the role CSP can play in ensuring grid stability. As nations integrate more variable renewables into their energy mix, the need for clean, on-demand power sources becomes paramount. The Tangshan Haitai plant’s performance provides a compelling case for CSP as a key part of the solution.

Molten Salt Technology and the CSP Plant Record

The Tangshan Haitai project is a 100 MW solar thermal power facility that leverages cutting-edge molten salt tower technology. The process works by using a vast field of mirrors, known as heliostats, to focus sunlight onto a central receiver at the top of a tower.

This concentrated solar energy heats molten salt flowing through the receiver to extremely high temperatures. The heated salt is then stored in a large insulated tank, creating a massive thermal battery. This stored thermal energy can be dispatched at any time—day or night, rain or shine—to produce high-temperature steam, which drives a conventional turbine to generate electricity.

It is this integrated thermal energy storage (TES) system that enabled the plant to run for 96 consecutive hours, seamlessly providing power long after the sun had set and through subsequent days.

A Milestone for China’s Energy Transition with this CSP plant record

This operational record is a significant step forward for China’s ambitious renewable energy goals. By proving that CSP can deliver baseload power, the Tangshan Haitai plant strengthens the case for wider deployment of this technology to help decarbonize the country’s industrial heartlands.

Key implications of this achievement include:

• Enhanced Grid Stability: CSP plants can provide essential grid services, such as frequency and voltage regulation, helping to balance the fluctuations from other renewable sources.
• A Proven Alternative: The success demonstrates a viable, large-scale renewable technology capable of providing consistent power, reducing reliance on fossil fuels for baseload and peak demand.
• Setting a New Standard: This 96-hour run sets a new performance benchmark for CSP projects in China and around the world, encouraging further innovation and investment in the sector.

As the world continues its transition toward a sustainable energy future, the Tangshan Haitai Solar Park’s record-breaking performance stands as a powerful example of how innovation can unlock the full potential of solar energy, delivering clean, reliable, and continuous power.