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Shidaowan's HTR-PM
The world's first commercial pebble-bed reactor, two modules and one 210 MWe turbine, operating since 2023.
The HTR-PM of Tsinghua and Huaneng at Shidaowan, Shandong, has two 250 MWt reactors feeding a single 210 MWe turbine. Each core holds about 420,000 graphite pebbles with TRISO fuel enriched to 8.5%, cooled by helium at 750 °C. It entered commercial operation in December 2023.
In 2024 it demonstrated that it can lose all forced cooling without damage, the definitive test of inherent safety. China is designing the six-module HTR-PM600 for industrial heat and desalination.
Quick facts
| Power | 2 × 250 MWt, 210 MWe |
|---|---|
| Fuel | TRISO pebbles, 8.5% |
| Helium | 70 bar, 250 → 750 °C |
| Commercial operation | December 2023 |