Drainage Services Department

Eco Expo Asia 2022 returns in December with the theme “Green Innovations for Carbon Neutrality”

25 November 2022

Eco Expo Asia 2022 will take place from 14 – 17 December 2022 at the Hong Kong Convention and Exhibition Centre. While the first three days of the Expo will be open to the trade, the last day will also be open to the public, whereas online services will run until 24 December. The theme of the Expo is “Green Innovations for Carbon Neutrality”, focusing on the technological innovations that will help to decarbonise the world.

Through the Expo, the Drainage Services Department (DSD) will introduce its development of various types of renewable energy sources over the years as well as the associated remarkable achievements and future outlook.

As an important event for the environmental industry, Eco Expo Asia has been providing a platform for showcasing innovative green products and services, learning about the latest trends and expanding business networks.  As one of the celebration events of the 25th anniversary of the establishment of the Hong Kong Special Administrative Region (HKSAR), Eco Expo Asia 2022 will continue to bring together industry leaders from different sectors to transform Hong Kong into a more sustainable and livable city.

Development of Renewable Energy by Drainage Services Department

The Drainage Services Department (DSD) has been striving to adopt renewable energy (RE) technologies on a wide scale in its existing and new facilities for reducing carbon emission and thus combating climate change.

The renewable energy generated in the form of electricity and heat is mainly for use in DSD's facilities. The RE sources harnessed in DSD include solar energy, hydro power, and biogas.  Despite various challenges and being the 3rd highest amongst government departments in terms of electricity consumption, DSD has managed to generate RE equivalent to around 28 million units (i.e. kWh) of electricity a year on average in recent years, meeting around 8% of its annual energy demand or the annual electricity demand of over 8,400 three-member families.                               

As for future prospect, DSD plans to annually generate an addition of about 18 million units of electricity from RE sources and save 1.85 million units more of energy use through energy efficiency initiatives by 2024/25, with 2018/19 as base year. These will help the department reduce 6% of its fossil energy consumption each year, or are enough for meeting the annual electricity demand of some 6,000 three-member families.

Please click to view the exhibition panels:



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