Junhe Atomic Technology

About Junhe Atomic Technology

Shanghai Junhe Atomic Technology Co., Ltd. (JHATOM) is a private company focused on the development and commercialization of advanced nuclear energy systems. Founded in June 2025, the company is headquartered in Shanghai, China. The legal representative and chairman is Tian Jiasu. In May 2026, Junhe Atomic Technology announced the completion of an angel funding round, raising several hundred million yuan from 14 investment institutions. The funds are intended to advance the design of its "Junhe No. 1" reactor, build its team, and lay the groundwork for industrialization. The company's primary focus is on accelerating the deployment of Small Modular Reactors (SMRs) and Micro-Reactors (MRs). Its product pipeline includes the SSMR-100, an independently developed small modular pressurized water reactor, and the MMR-5, a movable micro-reactor developed in cooperation with partners. Junhe Atomic also engages in the collaborative development of small modular high-temperature gas-cooled reactors (SSMR-50) to suit a wider range of applications. The business serves markets such as stable energy supply for AI data centers, residential power and heat, and comprehensive energy solutions for high-consumption industrial parks. The company also aims to provide stable power to complement intermittent renewable energy sources like wind and solar.