Pascal Lesage


Pascal Lesage

Pascal Lesage was a research officer at CIRAIG up until September 2020.

In his 18 years of LCA experience, he has participated in a dozen LCA studies, was a critical reviewer (internal or external) on studies spanning many product categories and industrial sectors, and has coauthored about twenty scientific articles. He was charged with the establishment of Quebec life cycle inventory database and an open source Canadian Environmentally Extended Input/Output model.

He specializes in product system modeling, life cycle inventory databases, assessment and management of uncertainty and interpretation of LCA results. He is proficient in several leading off-the-shelf LCA software tools and has built custom LCA models and tools using the Python-based Brightway2 LCA Framework.

While being involved in innovative LCA research in areas such as uncertainty analysis, regionalization and temporal differentiation, Pascal Lesage is also grounded in the needs of LCA analysts and industry. He has accordingly led projects where leading-edge research topics were included in simplified LCA-based tools for practical purposes, such as under-determined waste management LCA model for a government agency, IO-based tools for the LCA of government expenditures for the Province of Quebec, and a suite of applied uncertainty tools in Brightway for background work used in industry-based tools. His expertise in life cycle inventory and modeling was drawn upon in the writing of two documents of the UNEP-SETAC Life Cycle Initiative: Guidelines for Social Life Cycle Assessment of Products and Global Guidance Principles for Life Cycle Assessment Databases – A Basis for Greener Processes and Products, as well as the WRI / WBCSD GHG Protocol Product Life Cycle Accounting and Reporting Standard.

Pascal Lesage is a civil engineer (specialized in environment), graduated from École Polytechnique de Montreal but with stints in the Canadian Military Colleges of St-Jean-sur-Richelieu and Kingston and the Universidad de las Americas Puebla (Mexico). His Ph.D., done at the Department of Chemical Engineering of Ecole Polytechnique de Montreal, focused on the life cycle assessment of brownfield management and on the distinction between attributional and consequential LCA. After obtaining his doctorate, he worked for two years as a research officer at the CIRAIG. He then founded the Canadian offices of Sylvatica, a firm specializing in advanced LCA, where he led projects such as developing LCA tools, consequential LCA studies, and product improvement prioritization in the context of a retailer selling tens of thousands of products. He also continued to work as an Associate Professor at the CIRAIG, where he returned full-time in 2010 to continue his research in systems analysis and lead the Quebec life cycle inventory database project.

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