Case studies

2025

Daya Bay Nuclear Power Site celebrates milestone of trillionth kilowatt-hour of on-grid electricity generation

Daya Bay Nuclear Power Site celebrated a historic milestone of keeping the first nuclear power site in China to surpass one trillion kWh of on-grid electricity generation on 29^th April 2025. To date, over 320 billion kWh of nuclear energy has been imported to Hong Kong by CLP, contributing to the city’s economic and social development and playing a vital role in its decarbonisation journey.

The Daya Bay Nuclear Power Site consists of three major facilities: Daya Bay Nuclear Power Station, Ling Ao Nuclear Power Station Phase I and Phase II, each of which is equipped with two reactor units. Established in 1985 by CLP and China General Nuclear Power Corporation (CGN), Daya Bay Nuclear Power Station was the largest and a signature joint venture project at the initial stage of the Chinese Mainland’s reform and opening-up. Commissioned in 1994, it symbolises the long-term collaboration between CLP and CGN and has contributed significantly to the development of the nation’s power industry.

Having operated safely and efficiently for over 30 years, Daya Bay completed the first 30-year overhaul of a large-scale nuclear power unit in China in 2024. This involved implementing nearly 200 technical upgrades and over 50 innovations, including the world’s first digitisation of an analogue control system for an M310 model pressurised water reactor in operation. Generating around 15 billion kWh annually, with 80% supplied to Hong Kong, the station meets a quarter of the city’s electricity demand with stable, non-carbon nuclear power. It plays a vital role in Hong Kong’s carbon neutrality journey, and in CLP’s commitment to advancing nuclear and renewable energy to support decarbonisation goals.

Daya Bay Nuclear Power Station was commissioned in 1994 and has supplied Hong Kong with safe, stable and non-carbon emitting nuclear power for over 30 years, meeting a quarter of Hong Kongʼs electricity demand.