Marc Vielle | EPFL Graph Search

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Marc Vielle has obtained a PhD degree in economics from the University Panthéon-Sorbonne (Paris). He worked as an economic researcher at the Laboratoire ERASME of Ecole Centrale de Paris and Université de Paris I (1987-1992), where he developed and managed the macroeconomic model HERMES-France. In 1991 he joined the Commissariat à lEnergie Atomique (CEA) as senior economist where he participated to the development of two models (GEM-E3 and PRIMES) funded by the European Commission. In 1996 he joined the Institut dEconomie Industrielle of Toulouse directed by Jean-Jacques Laffont. In 2003 he joined the Laboratoire dEconomie des Ressources Naturelles directed by Michel Moreaux. Since 2007, Marc works at EPFL.

He is member of the GEMINI-E3 team and participates to the development of the world general equilibrium model GEMINI-E3. Marc has a strong experience in economic modeling (especially CGE modeling), quantitative analysis, energy and climate change policies. He has contributed to several research projects funded by national governments, European Commission and private companies.

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Emissions trading

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Climate change

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Energy

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A multimodel analysis of post-Glasgow climate targets and feasibility challenges

Sigit Pria Perdana, Marc Vielle

The COP26 Glasgow process resulted in many countries strengthening their 2030 emissions reduction targets and announcing net-zero pledges for 2050–2070 but it is not clear how this would impact future warming. Here, we use four diverse integrated assessment models (IAMs) to assess CO2 emission trajectories in the near- and long-term on the basis of national policies and pledges, combined with a non-CO2 infilling model and a simple climate model to assess the temperature implications. We also consider the feasibility of national long-term pledges towards net-zero. While near-term pledges alone lead to warming above 2 °C, the addition of long-term pledges leads to emissions trajectories compatible with a future well below 2 °C, across all four IAMs. However, while IAM heterogeneity translates to diverse decarbonization pathways towards long-term targets, all modelled pathways indicate several feasibility concerns, relating to the cost of mitigation and the rates and scales of deployed technologies and measures.

2023

Atteindre l'objectif de l'accord de Paris grâce au dévelopement de l'élimination du CO2

Frédéric Louis François Babonneau, Alain Haurie, Marc Vielle

2023

Expert perceptions of game-changing innovations towards net zero

Sigit Pria Perdana, Marc Vielle

Current technological improvements are yet to put the world on track to net-zero, which will require the uptake of transformative low-carbon innovations to supplement mitigation efforts. However, the role of such innovations is not yet fully understood; some of these ‘miracles’ are considered indispensable to Paris Agreement-compliant mitigation, but their limitations, availability, and potential remain a source of debate. We evaluate such potentially game-changing innovations from the experts' perspective, aiming to support the design of realistic decarbonisation scenarios and better-informed net-zero policy strategies. In a worldwide survey, 260 climate and energy experts assessed transformative innovations against their mitigation potential, at-scale availability and/or widescale adoption, and risk of delayed diffusion. Hierarchical clustering and multi-criteria decision-making revealed differences in perceptions of core technological innovations, with next-generation energy storage, alternative building materials, iron-ore electrolysis, and hydrogen in steelmaking emerging as top priorities. Instead, technologies highly represented in well-below-2°C scenarios seemingly feature considerable and impactful delays, hinting at the need to re-evaluate their role in future pathways. Experts' assessments appear to converge more on the potential role of other disruptive innovations, including lifestyle shifts and alternative economic models, indicating the importance of scenarios including non-technological and demand-side innovations. To provide insights for expert elicitation processes, we finally note caveats related to the level of representativeness among the 260 engaged experts, the level of their expertise that may have varied across the examined innovations, and the potential for subjective interpretation to which the employed linguistic

2023

ENV-610: Ecological economics

This course is an introduction to economic theory applied to environmental issues. It presents the methods used to assess environmental impacts and natural resources as well as environmental regulation instruments. It then broadens the analysis to ecological economics.

ENV-620: Environmental Economics for Engineers

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The course introduces non economists to the economic analysis of climate change: economic activity and climate change, estimation of climate impacts, optimal mitigation and adaptation, national and international climate policy, instruments for climate policy.