The Environment and Ecology Bureau (EEB) announced today (April 17) that Hong Kong has updated its methodology for compiling the greenhouse gas (GHG) emission inventory in accordance with the requirement of the United Nations Framework Convention on Climate Change (UNFCCC) and, at the same time, released the 2023 GHG emission inventory.
      
     Since 2013, the Hong Kong Special Administrative Region Government has been compiling its GHG emission inventory based on the Global Warming Potential (GWP) values provided in the Second Assessment Report (AR2) of the Intergovernmental Panel on Climate Change (IPCC). As decided by the UNFCCC at the 27th Conference of the Parties in 2022, GWP values set out in the IPCC Fifth Assessment Report (AR5) shall be used to calculate GHG emission inventory by no later than the end of 2024.
      
     In compliance with the requirement of the UNFCCC, the Government has used the AR5's GWP values to compile the 2023 GHG emission inventory and update previous GHG emission figures to reflect annual variations and long-term trends.
      
     Based on the calculation using AR5's GWP values, Hong Kong's total GHG emissions in 2023 amounted to approximately 34.5 million tonnes of carbon dioxide equivalent (CO2-e), representing a decrease of about 20 per cent compared to 2005 levels and a decrease of about 25 percent from the peak emissions in 2014. The per capita GHG emissions in 2023 reached a new low since 1990, at approximately 4.58 tonnes CO2-e. It is nearly 30 per cent lower than those in 2005 and 2014, and is about a quarter of that of the United States and 60 per cent of that of the European Union. The carbon intensity was about 0.012 kilograms of CO2-e per Hong Kong dollar of GDP, representing a decrease of about 46 per cent compared to 2005.
      
     The three main sources of GHG emissions in Hong Kong remain to be electricity generation (61 per cent), transport (18 per cent), and waste management (8 per cent). With the gradual replacement of coal with natural gas and zero-carbon energy for electricity generation, popularisation of electric vehicles, decrease in municipal solid waste quantity and increase in landfill gas recovery and utilisation (for energy production) in Hong Kong, GHG emissions from electricity generation, transport, and waste management have declined by approximately about 32 per cent, 7 per cent, and 10 per cent, respectively, compared to 2014.
      
     To align with the country's "dual carbon" target to achieve the peak of carbon emissions before 2030 and carbon neutrality before 2060, the Government will continue to implement the four major decarbonisation strategies, namely, net-zero electricity generation, energy saving and green buildings, green transport and waste reduction, outlined in Hong Kong's Climate Action Plan 2050, to reduce Hong Kong's carbon emissions by half from the 2005 levels before 2035 and achieve carbon neutrality before 2050.
      
     Details of the 2023 GHG emission inventory can be found on the following website: cnsd.gov.hk/en/climate-ready/ghg-emissions-and-trends.

Ends/Thursday, April 17, 2025
Issued at HKT 12:00

NNNN