Hong Kong's Inter-departmental Working Group on Using Hydrogen as Fuel gave agreement-in-principle on August 26, 2026, to a Castle Peak Power Company Limited application, the Environment and Ecology Bureau said the following day. The trial involves installing new hydrogen-associated facilities and modifying an existing combined cycle gas turbine unit at Black Point Power Station so hydrogen can be blended on site with natural gas for electricity generation. The targeted hydrogen blending ratio is currently up to 5 per cent.

The bureau said the working group began examining the application once detailed information arrived, and gave its agreement-in-principle after the applicant strengthened designs and technical details in response to departmental feedback. To date, the working group has given agreement-in-principle in stages to 42 hydrogen energy trial applications, and it will draw on operational data from trials to advise on updating local safety and technical guidelines.

The working group has also discussed simplifying application procedures and widening use of hydrogen-powered generators in remote areas or on construction sites. It said 10 generator applications have received agreement-in-principle, with five projects launched or completed and the rest under planning. The Electrical and Mechanical Services Department has engaged trade bodies, including the Construction Industry Council, on the guidance since early 2026.