The Stockholm Environment Institute (SEI) is a globally recognized, independent research and policy institute established in 1989 with the mission to promote sustainable development and environmental protection. With seven affiliate offices worldwide, SEI specializes in addressing critical environmental issues, including air quality, climate change, energy systems, and sustainable resource management. SEI works to bridge science and policy by providing actionable knowledge that supports decision-making and fosters transformative change toward sustainability.

SEI has been at the forefront of air pollution research and management, particularly through its innovative initiatives aimed at integrating air quality improvements with climate action. One of its most notable contributions is the development of A Practical Guide for Business: Air Pollutant Emission Assessment, launched at COP27 in collaboration with the Climate and Clean Air Coalition (CCAC). This guide enables businesses to measure air pollutant emissions across their value chains in sectors such as electricity generation, transport, agriculture, industrial processes, and waste. The guide has been adopted by the World Economic Forum’s Alliance for Clean Air. SEI plays a key role in supporting governments in Southeast and East Asia to strengthen their air quality management frameworks and their first Clean Air Plans.

SEI also focuses on advancing scientific methods for monitoring and assessing air pollution impacts, providing tools for policymakers to better understand pollution sources and design evidence-based interventions.

Finally, SEI actively engages in global dialogues on clean air through partnerships with organizations like UNEP and CCAC. By aligning its efforts with international frameworks such as the Sustainable Development Goals (SDGs), SEI ensures that its work contributes to global targets for clean air (SDG 11) and climate action (SDG 13).