Sensitivity of policy simulation to benchmark scenarios in CGE models: illustration with carbon leakage

Olivier Durand-Lasserve (), Axel Pierru and Yves Smeers ()
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Olivier Durand-Lasserve: Université catholique de Louvain, CORE, Belgium
Yves Smeers: Université catholique de Louvain, CORE, Belgium

No 2012063, LIDAM Discussion Papers CORE from Université catholique de Louvain, Center for Operations Research and Econometrics (CORE)

Abstract: In a Computable General Equilibrium (CGE) setting, we show how the cost of a carbon policy for an open economy depends on the assumptions made about future exogenous structural changes. For dynamic CGE models, we propose an analytical framework derived from static CGE models and associate structural changes with the construction of a non-stationary dynamic Social Accounting Matrix (SAM). Such matrices are benchmark scenarios that embed the modelers view on how technologies and preferences should evolve. These benchmark scenarios must be replicable and relevant (by matching what the modeler regards as plausible). To combine these two properties and produce alternative benchmark scenarios, we use partial parameter adjustments and general equilibrium computation. We produce three alternative benchmark scenarios that differ in terms of energy efficiency gains and structural shift in GDP. For each benchmark scenario, we then simulate the GDP deviation induced by a shock on carbon price. We show the dependence of the simulated GDP losses and terms of trade response on the benchmark scenario considered.

Keywords: computable general equilibrium model; non-stationary benchmark scenario; carbon leakage (search for similar items in EconPapers)
JEL-codes: C68 F18 H21 Q52 (search for similar items in EconPapers)
Date: 2012-12-31
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Citations: View citations in EconPapers (1)

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