HTR-PM first reactor connected to the grid; world's first Gen-IV pebble-bed reactor to generate electricity

China Huaneng Group/HTR-PM (Shidao Bay)

Shidao Bay HTR-PM's first reactor connected to the grid on December 20, 2021, becoming the world's first Gen-IV pebble-bed reactor to generate electricity. The reactor achieved criticality in September, with the second reactor following in November.

• First reactor achieved first criticality September 12, 2021
• Second reactor achieved first criticality November 11, 2021
• Two 250 MWt modules share a single 210 MWe turbine
• Passive cooling demonstrated: no active cooling or human intervention needed if systems fail