Stefanie Hellweg is professor of ecological systems design at the Swiss Federal Institute of Technology, Zurich, where she is working on modelling, evaluating and improving the environmental impact of products, technologies and consumption patterns.

Stefanie Hellweg has been professor for Ecological Systems Design at the Institute of Environmental Engineering in the Department Civil, Environmental, and Geomatic Engineering at the Swiss Federal Institute of Technology (ETH) Zurich since 2006.

Dr Hellweg studied industrial engineering at Karlsruhe University. After graduating in 1996, she worked as a management consultant on projects in the field of waste management and energy production. From 1997 to 2000 she completed her PhD on the environmental assessment of thermal waste treatment processes at ETH Zurich. From 2001 to 2002 she worked as a post-doc in a joint project between PSI and ETH on sustainable waste management. In 2003 she became a senior research fellow at the Institute for Chemical and Bioengineering at ETH Zurich where she lead several projects on the environmental assessment of chemical products and processes, the treatment of waste and wastewaters from the chemical industry, and chemical exposure at the workplace. Between 2004 and 2005 she was a visiting scientist at Lawrence Berkeley National Laboratory and in 2013 at Yale University in the US. 

In her current research, Dr Hellweg s working on modelling, evaluating and improving the environmental impact of products, technologies and consumption patterns. In particular, she is developing and applying methods for Life Cycle Assessment and industrial ecology. She has published more than 130 ISI journal publications and 16000 citations. Besides her research activities, she serves on several academic steering and advisory committees as well as editorial boards. Between 2011 and 2019 she was member of the National Research Council of the Swiss National Science Foundation (SNF) and is currently the vice president (and president elect for 2021) of the International Society of Industrial Ecology.


Selected publications

Haupt M, Hellweg S, Measuring the Environmental Sustainability of Circular Economy, Environmental and Sustainability Indicators,, 2019

Cabernard L, Pfister S, Hellweg S, A New Method for Analyzing Sustainability Performance of Global Supply Chains and its Application to Material Resources, Science of the Total Environment, 684, 164-177,, 2019

Oberschelp C, Pfister S, Raptis CE, Hellweg S, Global emission hotspots of coal power generation, Nature Sustainability, 2, 113-121, DOI: 10.1038/s41893-019-0221-6, 2019

Froemelt A, Buffat R, Hellweg S, Machine Learning Based Modeling of Households: A Regionalized Bottom-Up Approach to Investigate Consumption-Induced Environmental Impacts, Journal of Industrial Ecology,, 2019

Heeren N, Hellweg S, Tracking construction material over space and time: Prospective and geo-referenced modeling of building stocks and construction material flows, Journal of Industrial Ecology, 23 (1), 253-267, doi:10.1111/jiec.12739, 2019

Di Fluvio F, ForsellN, Korosuo A, Obersteiner M, Hellweg, S, Spatially explicit LCA analysis of biodiversity losses due to different bioenergy policies in the European Union, Science of the Total Environment 651, 1505-1516, 2018

Frömelt, A, Dürrenmatt DJ, Hellweg S, Using Data Mining to Assess Environmental Impacts of Household Consumption Behaviors, Environmental Science and Technology 52(15), 8467-8478, 2018

Walker C, Gibney ER, Hellweg S, Comparison of Environmental Impact and Nutritional Quality among a European Sample Population – findings from the Food4Me study, Scientific Reports,, 2018

Buffat R, Froemelt A, Heeren N, Raubal M, Hellweg S, Big data GIS analysis for novel approaches in building stock modelling, Applied Energy 208,, 277-290, 2017

Beretta C, Stucki M; Hellweg S, Environmental Impacts and Hotspots of Food Losses: Value Chain Analysis of Swiss Food Consumption, Environmental Science and Technology 51(19), 11165–11173 2017

Sonderegger T, Dewulf K, Fantke P, Maia de Souza D, Pfister S, Stoessel F, Verones F, Vieira M, Weidema B, Hellweg S, Towards harmonizing natural resources as an area of protection in Life Cycle Impact Assessment, International Journal of LCA, in press, DOI 10.1007/s11367-017-1297-8, 2017

Haupt M, Vadenbo C, Hellweg S, Do we have the right performance indicators for the circular economy? – Insight into the Swiss waste management system, Journal of Industrial Ecology 21(3), 615–627, 2017

Haupt M, Vadenbo C, Zeltner C, Hellweg S, Influence of input-scrap quality on the environmental impact of secondary steel production; Journal of Industrial Ecology 21(2), 391–401, 10.1111/jiec.12439, 2017

Chaudhary A, Pfister S, Hellweg S, Spatially Explicit Analysis of Biodiversity Loss due to Global Agriculture, Pasture and Forest Land Use from a Producer and Consumer Perspective, Environmental Science & Technology 50, 3928–3936, DOI: 10.1021/acs.est.5b06153, 2016

Chaudhary A, Verones F, de Baan L, Hellweg S, Quantifying Land Use Impacts on Biodiversity: Combining Species-Area Models and Vulnerability Indicators, Environmental Science and Technology 49 (16), 9987–9995, DOI: 10.1021/acs.est.5b02507, 2015

Hellweg S, Mila i Canals L, Emerging approaches, challenges and opportunities in life cycle assessment, Science 344 (6188), 1109-1113, June 2014 

Stamp A, Wäger PA, Hellweg S, Linking energy scenarios with metal demand modeling - the case of indium in CIGS solar cells, Resources, Conservation & Recycling 93, 156–167, 2014

Beretta C, Stössel F, Baier U, Hellweg S, Quantifying food losses and the potential for reduction in Switzerland, Waste Management 33 (3), 764–773, 2013

Bösch ME, Köhler A, Hellweg S, A Model Framework for Input- and Technology-dependent Life Cycle Assessment of Clinker Production, Environmental Science and Technology, 43,  7578 - 7583, 2009

Pfister S, Köhler A, Hellweg S, Assessing the environmental impacts of freshwater consumption in LCA, Environmental Science and Technology, 43, 4098 – 4104, 2009