Bromma Stockholm Airport was one of the first airports to meet the requirements for the highest level of certification in a European programme that assesses the climate work of airports.

Airport Council International (ACI) Europe and WSP Environmental are the organisations behind this programme, called Airport Carbon Accreditation.

The Airport Carbon Accreditation programme follows the international Greenhouse Gas Protocol standard developed by the World Resources Institute (WRI). There are four levels in the programme under which airports are accredited. In December 2009, Bromma Stockholm Airport was accredited at the highest level, 3+.

Since then, the airport has continued to reduce its carbon dioxide emissions, and 2011 is the third year in a row that Bromma Stockholm Airport retained its highest level of accreditation. All requirements must be met to achieve the highest level.

The highest level requires that the airport is entirely climate-neutral with respect to carbon emissions from its own operations. When an airport meets the requirements of the highest level in the programme, it means that all the other steps on the scale have also been met.

The four levels for which Bromma Stockholm Airport meets the requirements are:

  • Level 1 (Mapping): requires that the airport compile a report of the carbon dioxide emissions the airport has control over but also the emission sources that the airport can influence. All emission sources are verified in accordance with ISO 14064 (Greenhouse Gas Accounting) by an independent auditor.
  • Level 2 (Reduction): also requires that the airport shows it has an effective programme to manage carbon emissions and demonstrates progress towards a reduced carbon footprint.
  • Level 3 (Optimisation): in addition to Mapping and Reduction requires that the airport engages other companies operating at the airport, such as airlines and catering firms.
  • Level 3+ (Neutrality): in addition to levels 1-3 requires that the airport offsets the emissions it has not yet been able to reduce on its own by investing in projects in developing countries that offset the equivalent amount of carbon dioxide. 


Airport Council International Europe is a consortium of 440 airports in Europe.
WSP Environmental is a global analysis and technology company that provides consulting services for sustainable social development.