Hainan’s First Hualong‑One Nuclear Unit Connects to National Grid

According to Xinhua News Agency, Unit 3 of Huaneng Changjiang Nuclear Power Phase‑II has achieved grid connection. It is the first large‑scale pressurised‑water‑reactor nuclear project under the holding‑construction model of China Huaneng Group and Hainan Province’s inaugural Hualong‑One nuclear installation. 

Generating Huaneng’s first kilowatt‑hour of pressurised‑water‑reactor nuclear power, the unit now possesses the capability to feed electricity into public power networks and takes a critical stride towards commercial operation.

The project comprises two 1 200 MW nuclear power units built around Hualong‑One, China’s domestically‑developed third‑generation pressurised‑water‑reactor technology with full independent intellectual property rights. Design autonomy and domestic equipment manufacturing are advanced throughout the whole engineering cycle. Combining active and passive safety systems, the technical configuration delivers marked improvements in plant reliability and operational safety.

Upon full completion, the complex will deliver an annual power output of 18 billion kWh. Annual standard‑coal consumption will drop by more than 6.32 million tonnes, alongside roughly 11.6 million tonnes of avoided carbon‑dioxide emissions. The facility will supply clean, secure and efficient energy resources for the Hainan Free Trade Port.

Operational teams will carry out scheduled power‑ramping procedures and complete serial performance verification tests on Unit 3. Construction work for the second unit on‑site will move forward in parallel. The generated low‑carbon electricity will feed into regional grids once commercial‑operation conditions are met.