TY - RPRT CY - Toulouse ID - publications50749 UR - http://tse-fr.eu/pub/130495 A1 - Grimaud, André A1 - Rouge, Luc Y1 - 2025/04/08/ N2 - Technical progress is considered a key element in the ght against climate change. It may take the form of technological breakthroughs, that is, shocks that induce signicant leaps in the stock of knowledge. We use an endogenous growth framework with directed technical change to analyze the climate impact of such shocks. Two production subsectors coexist: one subsector is fossil-based, using a non-renewable resource, and yields carbon emissions; the other subsector uses a clean, renewable resource. At a given date, the economy benets from an exogenous technology shock. We fully characterize the general equilibrium and analyze how the shock modies the economys trajectory. The overall e¤ect on carbon emissions basically depends on the substitutability between the production subsectors, the initial state of the economy, and the nature and size of the shock. We notably show that green technology shocks induce higher short-term carbon emissions when the two subsectors are gross complements, but also in numerous cases when they are gross substitutes. PB - TSE Working Paper T3 - TSE Working Paper KW - directed technical change KW - endogenous growth KW - technology shocks KW - climate change M1 - working_paper TI - Technology Shocks, Directed Technical Progress and Climate Change AV - public EP - 37 ER -