Template-Type: ReDIF-Article 1.0 Author-Name: Jonathan Kohler, Michael Grubb, David Popp and Ottmar Edenhofer  Title: The Transition to Endogenous Technical Change in Climate-Economy Models: A Technical Overview to the Innovation Modeling Comparison Project Classification-JEL: F0 Pages: 17-56 Volume: Endogenous Technological Change Issue: Special Issue #1 Year: 2006 Abstract: This paper assesses endogenous technical change (ETC) in climate-economy models, using the models in the Innovation Modeling Comparison Project (IMCP) as a representative cross-section. ETC is now a feature of most leading models. Following the new endogenous growth literature and the application of learning curves to the energy sector, there are two main concepts employed: knowledge capital and learning curves. The common insight is that technical change is driven by the development of knowledge capital and its characteristics of being partly non-rival and partly non-excludable. There are various different implementations of ETC. Recursive CGE models face particular difficulties in incorporating ETC and increasing returns. The main limitations of current models are: the lack of uncertainty analysis; the limited representation of the diffusion of technology; and the homogeneous nature of agents in the models including the lack of representation of institutional structures in the innovation process. Handle: RePEc:aen:journl:2006SE-a02 File-URL: http://www.iaee.org/en/publications/ejarticle.aspx?id=2133 File-Format: text/html File-Restriction: Access to full text is restricted to IAEE members and subscribers.