Optimal energy investment and R&D strategies to stabilize atmospheric greenhouse gas concentrations
Stabilizing the atmospheric concentrations of greenhouse gases (GHGs) at levels expected to prevent dangerous climate changes has become an important, long-term global objective. It is therefore crucial to identify a cost-effective way to achieve this objective. In this paper, we use WITCH, a hybrid climate-energy-economy model, to obtain a quantitative assessment of equilibrium strategies that stabilize CO2 concentrations at 550 or 450ppm. Since technological change is endogenous and multifaceted in WITCH, and the energy sector is modeled in detail, we can provide a description of the ideal combination of technical progress and alternative energy investment paths in achieving the sought stabilization targets. Given that the model accounts for interdependencies and spillovers across 12 regions of the world, equilibrium strategies are the outcome of a dynamic game through which inefficiency costs induced by global strategic interactions can be assessed. Our results emphasize the drastic change in the energy mix that will be necessary to control climate change, the huge investments in existing and new technologies implied, and the crucial role of breakthrough technological innovation.
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- Valentina Bosetti & Carlo Carraro & Romain Duval & Alessandra Sgobbi & Massimo Tavoni, 2009.
"The Role of R&D and Technology Diffusion in Climate Change Mitigation: New Perspectives Using the WITCH Model,"
OECD Economics Department Working Papers
664, OECD Publishing.
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