2004 HTR-PM standard design was started jointly by INET and CHINERGY.

2006 HTR-PM Project was listed in the National Guideline on Medium- and Long-Term Program for Science and Technology Development (2006-2020).

2006 Huaneng Shandong Shidaowan Nuclear Power Co., Ltd, the HTR-PM owner company, was established jointly invested by China Huaneng Group, Nuclear Industry Construction Group and Tsinghua University.

2012 HTR-PM first concrete dumping