Key Government Renewable Energy Projects

In accordance with the Hong Kong’s Climate Action Plan 2050 promulgated in October 2021, the Government is grappling with Hong Kong’s geographical and environmental constraints in driving the development of Renewable Energy (RE), and will strive to increase its share in the fuel mix for electricity generation to 7.5% to 10% by 2035, and further increase it to 15% subsequently.

What are Government’s existing RE projects?

In recent years, the Government has applied innovative technology to develop RE projects in various suitable premises.

Regarding solar energy, the Water Supplies Department (WSD) has installed floating solar energy generation systems of 100 kilowatts (kW) each at Shek Pik Reservoir, Plover Cove Reservoir and Tai Lam Chung Reservoir for electricity generation; whereas the Drainage Services Department (DSD) has installed in phases high-efficiency thin-film solar energy generation systems on the curved sedimentation tank covers at Stonecutters Island Sewage Treatment Works which occupy an area of about 30 000 m² to supply electricity for the plant.  Besides, the Environmental Protection Department (EPD) commissioned a 150 kW solar energy generation system at Jordan Valley Landfill in February 2023, which is the first solar energy generation system on a restored landfill in Hong Kong with a view to making better use of vacant land and promoting the sustainability of restored landfills.

Floating solar energy generation system at Tai Lam Chung Reservoir

Thin-film solar energy generation system at Stonecutters Island Sewage Treatment Works

As regards waste-to-energy, Hong Kong’s first modern waste-to-energy facility for treating municipal solid waste, Integrated Waste Management Facilities Phase 1 (I·PARK1), has commenced trial operation in December 2025.  The heat recovered from the incineration process can be used to generate electricity.  Upon full operation, apart from supporting the facility’s daily operation, it is expected to export around 480 million kilowatt-hours (kWh) of electricity to the power grid annually, which is equivalent to the annual electricity consumption of about 100 000 households, thereby fully demonstrating the benefits of waste-to-energy.

I·PARK1

In addition, the DSD and the EPD jointly manage and implement the Food Waste/Sewage Sludge Anaerobic Co-digestion Trial Scheme at Tai Po and Sha Tin Sewage Treatment Works.  Through anaerobic co-digestion of food waste and sewage sludge, the Scheme aims to increase biogas production and reduce the amount of sewage sludge.  The two sewage treatment works can process about 100 tonnes of food waste per day.

Food waste and sewage sludge anaerobic co-digestion facility at Tai Po Sewage Treatment Works

Concerning Organic Resources Recovery Centre Phase 1 (O·PARK1), Organic Resources Recovery Centre Phase 2 (O·PARK2) and Sludge Treatment Facility (T·PARK), surplus electricity is generated from these facilities by treating organic waste and sewage sludge for export to the grid respectively.  O·PARK1 and O·PARK2 transform organic waste into biogas and compost.  Biogas is utilised to generate electricity.  About 14 million kWh and 24 million kWh of surplus electricity can be exported to the power grid each year respectively when running in full capacity, which is equivalent to the annual electricity consumption of about 8 000 households.  T·PARK is a large-scale waste-to-energy facility.  The heat energy generated from the sludge incineration process is recovered and turned into electricity that can support the needs of the entire facility.  When running at full capacity, about 17.5 million kWh of electricity can be exported to the power grid each year, which is equivalent to the annual electricity consumption of about 4 000 households. 

In addition, the Government has earmarked HK$3 billion in total since the 2017-18 financial year for the installation of small-scale RE facilities at government buildings, venues and facilities.

Floating solar energy generation systems on Shek Pik Reservoir

Solar powered lamps at Sai Kung Outdoor Recreational Centre

Solar energy generation systems at Airport Police Station

If you want to find out more about existing Government RE projects, please visit the Electrical and Mechanical Services Department (EMSD)’s HK RE Net.

What are the other RE projects?

The Government will continue to grapple with objective constraints in developing RE.  To raise the requirements of applying RE technologies in new government buildings, the Joint Circular on Green Government Buildings has increased the proportion of available roof space for installing RE systems from at least 10% to at least 25%.

Solar energy generation system at the roof space of Kwai Chung Primary Treatment Works

The Government will examine any technically and financially feasible plans to develop RE in different spaces.  For instance, the DSD has expanded the floating solar energy generation system at San Tin Polder, which can generate about 310 000 kWh of electricity per annum.  In addition, through multi-disciplinary and inter-departmental collaboration, the EMSD has launched the Pilot Scheme on Building-Integrated Photovoltaics at its Headquarters to explore photovoltaic technology applications on the facades of buildings as well as to supply RE to buildings.

Floating solar energy generation system at San Tin Polder

The EPD is also actively exploring the installation of larger scale solar energy generation systems at restored landfills.  With the participation and collaboration of the private sector, the 1 megawatt solar farm project at the SENT Landfill in Tseung Kwan O was commissioned in December 2025.

Further information, data and statistics on RE

As part of the Government’s on-going efforts to promote RE, the EMSD publishes on its HK RE Net information on RE, including the application of different RE technologies in Hong Kong and overseas, existing RE projects being operated by the Government and the private sector, as well as the relevant statistical information.  For details, please visit HK RE Net.