The persistent uncertainty about mid-century CO2 emissions targets is likely to affect not only the technological choices that energy-producing firms will make in the future but also their current investment decisions. We illustrate this effect on CO2 price and global energy transition within a MERGE-type general-equilibrium model framework, by considering simple stochastic CO2 policy scenarios. In these scenarios, economic agents know that credible long-run CO2 emissions targets will be set in 2020, with two possible outcomes: either a “hard cap” or a “soft cap”. Each scenario is characterized by the relative probabilities of both possible caps. We derive consistent stochastic trajectories—with two branches after 2020—for prices and quantities of energy commodities and CO2 emissions permits. The impact of uncertain long-run CO2 emissions targets on prices and technological trajectories is discussed. In addition, a simple marginal approach allows us to analyze the Hotelling rule with risk premia observed for certain scenarios.
Authors: Oliver Durand-Lasserve, Axel Pierru and Yves Smeers
Research FellowOlivier is a research fellow in the Energy Systems and Macroeconomics program. Previously, he was an economist at the Organisation…Olivier is a research fellow in the Energy Systems and Macroeconomics program. Previously, he was an economist at the Organisation for Economic Co-operation and Development (OECD) and at the International Energy Agency (IEA) in Paris where his activities covered macroeconomic policy analysis and applied general equilibrium modeling. He contributed to various modeling studies on the assessment of the macroeconomic, environmental and distributional consequences of energy and environmental policies. He also worked on the land-water-energy nexus and on the economic consequences of air pollution. Before he joined the OECD, Olivier worked at ENGIE, in Paris, where he developed an in-house modeling framework for quantifying global long-term energy-economy scenarios. While completing his Ph.D., he was a research assistant at the Center for Operations Research and Econometrics (CORE) in Louvain-la-Neuve, Belgium.
Acting Vice President/ Program DirectorAxel Pierru received his Ph.D. in economics from University Paris 1 Pantheon-Sorbonne (France). He also holds an HDR degree, which…Axel Pierru received his Ph.D. in economics from University Paris 1 Pantheon-Sorbonne (France). He also holds an HDR degree, which is a French accreditation to supervise research. In 2007, Dr. Pierru was appointed Chevalier dans l’Ordre des Palmes Académiques (knighthood award in the academic field) by the French Ministry for National Education.
In 2011 Dr. Pierru joined KAPSARC in Saudi Arabia, after spending 15 years at IFP Energies Nouvelles (France) where he led research, consulting and training projects and taught energy economics and finance to postgraduate students.
Dr. Pierru has served in various leadership positions at KAPSARC, including as interim Vice President for Research. Since 2014 he has been a program director, and currently he leads the Energy Macro & Micro-economics Program. He is also Acting Vice President, Knowledge & Analysis.
He undertakes applied research that combines methodological innovation with practical relevance for policymaking. His expertise covers oil market and pricing, energy economics, policy, finance and modeling, and oil-exporting economies.
Dr. Pierru has a proven track record of methodological innovations with 50 journal papers to his name. He has been a key contributor to the development of novel lines of research, such as the role of OPEC in stabilizing the oil market, the economic modeling of price controls, or the evaluation of investment projects by international oil companies facing various tax systems.
He also coauthored with Denis Babusiaux the book Corporate Investment Decisions and Economic Analysis: Exercises and Case Studies (2005), which is the fruit of years of teaching, consulting and research, and contains numerous examples from the oil and gas sector.