ESMIA Consultants offers cutting-edge expertise in 3E (energy-economy-environment) integrated system modelling. We rely on decision support based on a rigorous scientific approach and guided by sophisticated mathematical models for a sustainable energy future.

We carry out mandates for various types of organizations on an urban, national, continental and global scale:

– Ministries and government departments
– Governmental agencies
– Energy producers
– Technology developers
– Philanthropic foundations

Based in Quebec (Canada), we have built many partnerships with other consulting firms, institutes and research laboratories in Canada and internationally. This openness to collaboration is one of ESMIA’s strengths, with its partners having acquired complementary fields of expertise that are required in the analysis of complex challenges, such as life cycle analysis, circular economy, multi-criteria decision analysis, sustainable mobility, smart grids, etc.

Kathleen Vaillancourt, Founder of ESMIA Consultants

A professional entrepreneur with fifteen years of experience in 3E (energy-economy-environment) system modelling, Kathleen excels in studying complex issues such as energy security and climate change. In particular, she specializes in the development of the MARKAL/TIMES optimization models and their applications for supporting decision-making on energy policies and cost-effective carbon mitigation strategies. She has participated in the development of energy models for major international organizations, including the European Commission, the International Energy Agency, and the United States Department of Energy.

As the founder of ESMIA Consultants (Canada), Kathleen Vaillancourt is also the main instigator of the North American TIMES Energy Model (NATEM) used to support various stakeholders from prestigious organizations in North America. She has participated in numerous projects that require strong analytical skills for defining deep decarbonization pathways and studying the impacts of national climate targets committed by countries in international agreements (NDCs). She is involved in the activities of the International Energy Agency’s ETSAP program alongside some of the world’s best-in-class TIMES modellers. She holds a Ph.D. in Environmental Sciences from the Université du Québec à Montréal and an MBA from HEC Montréal.

Among our clients: 

ESMIA’s consultants collaborate with renowned experts:

  • Research Chair in Energy Sector Management (Professor Pineau), HEC Montréal (Canada)
  • CIRAIG—International Reference Centre for the Life Cycle of Products, Processes and Services (Canada)
  • Collaborative Applied Research in Economics (Professor Locke), Memorial University of Newfoundland (Canada)
  • Department of Civil Engineering (Professor Shao), McGill University (Canada)
  • Department of Mechanical Engineering (Prof. Bernier), Polytechnique Montréal (Canada)
  • Department of Construction Engineering (Professor Levasseur), École de technologie supérieure (Canada)
  • Department of Strategy, Social and Environmental Responsibility (Professor Purdon), Université du Québec à Montréal (Canada)
  • Dunsky Energy Expertise—(Canada)
  • Institut EDDEC—Institut de l’environnement, du développement durable et de l’économie circulaire [Institute for the Environment, Sustainable Development and the Circular Economy] (Canada)
  • ENERIS—Environment Energy Consultants (Spain)
  • IMSP—Institute of Mathematics and Physics (Benin)
  • VITO—Flemish Institute for Technological Research (Belgium)
  • IEECP—Institute for European Energy and Climate Policy (Netherlands)
  • LIRIDE—Interdisciplinary Research Laboratory in Life Cycle Assessment and Circular Economy (Professor Amor), Université de Sherbrooke—(Canada)
  • e3 Hub (Professor Bahn), HEC Montréal (Canada)
  • SCMS Global Inc. (Canada)
  • What If Technologies (Canada)


Our models have been used collaboratively by many North American decision makers to:

– Draft climate action plans, identify priority actions and define optimal sequences for the introduction of mitigation measures

– Identify strategic research priorities to reduce mitigation costs, while contributing to economic development

– Prepare Canadian energy outlooks including a wide range of possible futures from business-as-usual scenarios to deep decarbonization and net-zero scenarios

– Prepare technological roadmaps with detailed analyses of penetration rates for emerging technologies or energy sectors

– Evaluate the economic and environmental impacts of energy projects

– Analyze energy security issues (energy supply, production infrastructure and transportation)

– Assess the techno-economic potential of circular economy strategies for metals and materials


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