The Stockholm Environment Institute (SEI) is an international research organization focusing on the issue of sustainable development.

Stockholm Environment Institute Stockholm Environment Institute, or SEI, is a non-profit, independent research and policy institute specialising in sustainable development and environmental issues, with seven affiliate offices around the world. SEI works on climate change, en ...

has its headquarters in

Stockholm Stockholm (; ) is the Capital city, capital and List of urban areas in Sweden by population, most populous city of Sweden, as well as the List of urban areas in the Nordic countries, largest urban area in the Nordic countries. Approximately ...

with a network structure of permanent and associated staff worldwide and with centres the US,

York York is a cathedral city in North Yorkshire, England, with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss. It has many historic buildings and other structures, such as a Yor ...

and

Oxford Oxford () is a City status in the United Kingdom, cathedral city and non-metropolitan district in Oxfordshire, England, of which it is the county town. The city is home to the University of Oxford, the List of oldest universities in continuou ...

(England),

Tallinn Tallinn is the capital city, capital and List of cities in Estonia, most populous city of Estonia. Situated on a Tallinn Bay, bay in north Estonia, on the shore of the Gulf of Finland of the Baltic Sea, it has a population of (as of 2025) and ...

(Estonia), and

Bangkok Bangkok, officially known in Thai language, Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies in the Chao Phraya River delta in central Thailand and has an estim ...

(Thailand). SEI's US center is a research affiliate of Tufts University in Massachusetts and also has offices in

Davis, California Davis is the most populous city in Yolo County, California, United States. Located in the Sacramento Valley region of Northern California, the city had a population of 66,850 in 2020, not including the on-campus population of the University of ...

and

Seattle, Washington Seattle ( ) is the List of municipalities in Washington, most populous city in the U.S. state of Washington (state), Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the List of Unit ...

. It conducts a diverse programme focusing on the social, technological and institutional requirements for a transition to sustainability. Its funders include the United Nations, the World Bank, and numerous foundations and national governments such as the United States, Sweden, Denmark, Germany, the Netherlands and the UK. In addition to providing policy-relevant analyses, the Center works to build capacity in developing countries for integrated sustainability planning through training and collaboration on projects. Its decision support tools are widely used: LEAP for energy planning and

climate change mitigation Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include energy conservation, conserving energy and Fossil fuel phase-out, repl ...

, WEAP for water resources planning and PoleStar for evaluating sustainable development strategies. Its activities are organized into three programs: * The Climate and Energy Program conducts energy system analyses, examines environmental consequences of energy use such as global warming, and develops policies for a transition to efficient and renewable energy technology. * The Water Resources Program brings an integrated perspective to freshwater assessment, one that seeks sustainable water solutions by balancing the needs for basic water services, development and the environment. * The Sustainable Development Studies Program takes a holistic perspective in assessing sustainability at global, regional, and national levels.

External links

SEI-US web site

Main SEI web site

LEAP web site

WEAP web site
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