Special Announcement
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According to the United Nations Intergovernmental Panel on Climate Change (IPCC), the aviation industry produces approximately 2% of the world's man-made emissions of carbon dioxide (CO2), and 3% when non-CO2 greenhouse gas emissions are considered. Airport operations contribute less than 5% of total aviation emissions.

Despite these relatively low figures, Hong Kong International Airport (HKIA) has developed a carbon reduction strategy to drive energy and fuel efficiency and further reduce greenhouse gas emissions.

In 2008, the Airport Authority (AA) signed the Aviation Industry Commitmentto Action on Climate Change , a global initiative to mitigate our industry's impact on climate change. For details, please visit the Enviro.aero website.

The AA is also one of the founding members of the "Green Hong Kong • Carbon Audit" campaign organised by the Environmental Protection Department. In 2009, the AA and its business partners completed the first airport-wide carbon audit and have since worked together to develop specific plans to reduce the airport's carbon footprints.

In 2010, the AA and its business partners pledged to reduce airport-wide carbon emissions by 25% per workload unit by 2015 compared to 2008 levels. Since then, the airport community has completed more than 400 carbon reduction initiatives, including installing LEDs, improving building cooling systems and introducing more energy-efficient vehicles. Click here for details.

In 2013, HKIA received the Airport Carbon Accreditation "Optimisation" certificate from Airports Council International (ACI) in recognition of its carbon emissions management and reduction efforts. It is the second-highest level of accreditation in the programme and HKIA was the first airport in Asia Pacific to achieve this standard.

The AA actively promotes carbon reduction initiatives across the airport by organising technical visits, seminars and workshops for the airport community. More carbon reduction initiative can be found at http://www.hongkongairport.com/eng/sustainability/carbon-reduction/index.html.

Carbon Less 11% Certificate of Hong Kong Awards for Environmental Excellence Airports Council Internationalwww.enviro.aeroCarbon Audit · Green Partner

Carbon Reduction Performance


  1. Includes AA's facilities such as Terminal 1, Terminal 2, North Satellite Concourse, SkyPier, HKIA Tower, Airport World Trade Centre, etc.
  2. The methodologies and emission factors applied for the quantification of GHG emissions and removals were in accordance with the Guidelines to Account for and Report on Greenhouse Gas Emissions and Removals for Buildings (Commercial, Residential or Institutional Purposes) in Hong Kong, 2010 Edition issued by EMSD and EPD. The operational boundary covers Scope 1, Scope 2 and selected Scope 3 emission.
  3. Workload Unit (WLU): One workload unit is equal to one passenger or 100kg of cargo.