Stockholm Environment Institute




Stockholm Environment Institute is an independent international research institute engaged in environment and development issues at local, national, regional and global policy levels. SEI was formally established in 1989 by the Swedish Government and celebrated its 25th anniversary in October 2014. It aims to bring about change for sustainable development by bridging science and policy, providing integrated analysis that supports decision-makers.


Simon Croft is a mathematician and programmer based at the SEI York centre as a Research Associate. His work at SEI has included developing multi-regional input-output (MRIO) models and methodologies to link global impacts to UK demand and consumption, for the UK Department for Environment, Food and Rural Affairs (Defra). He has also worked on SEI’s Input-Output Trade Analysis (IOTA) model and EUREAPA, an online scenario modelling and policy assessment tool created for the One Planet Economy Network (OPEN:EU).

Elena Dawkins leads SEI’s work in PRINCE. Ellie is an SEI Research Fellow at SEI Stockholm. Her research is focused on sustainable consumption and production (SCP), investigating environmental impacts along supply chains and the role of different actors in delivering SCP. She works on a number of tools for analysing consumption and production scenarios and policy options, including the IOTA model. She has also provided training for local authorities and government agencies in the consumption approach and use of these tools, and is investigating the role of local governments in incentivizing sustainable consumption. Ellie is co-lead of the SEI Initiative on Producer to Consumer Sustainability (P2CS).

Javier Godar is a Senior Research Fellow based at SEI Stockholm. His research interests deal with developing a better understanding of social-ecological systems in forested areas to inform rural development policies, with focus in the Amazon Basin. As part of this research he also works on developing spatially explicit supply chain mapping to link consumption of major land-based commodities such as soy, coffee and palm oil back to the specific areas of production (e.g. municipalities). He is part of the core SEI team developing the Trase Platform.

Linn Persson is a Research Fellow and head of the Governance and Institutions Unit at SEI Stockholm. Linn has a PhD in Environmental Chemistry. Her areas of expertise are chemical pollution, chemicals management, and international environmental agreements. Her research interests also include studies of transfer of chemical risks along complex supply chains and opportunities for chemical risk reduction in global production to consumption systems. Before joining SEI, Linn worked for UNEP Chemicals in Geneva, the Swedish Embassy in Kenya and at the Department of Applied Environmental Science, Stockholm University, Sweden.

Caspar Trimmer is a Science Writer and Editor at SEI, and leads communication activities within PRINCE and the P2CS Initiative.

Chris West is a Research Associate at the SEI York centre whose research focuses on three main areas: supply-chain modelling and impact assessment; tools and knowledge to support sustainable behaviour by individuals and businesses; and indicators and metrics for sustainable development. As a member of the Sustainable Consumption and Production group at SEI York, he is involved in developing and maintaining a number of SEI’s REAP suite of sustainable consumption tools developed at York, including REAP Petite and the IOTA model.