Why the EU ETS needs reforming: an empirical analysis of the impact on company investments

The European Union's Emissions Trading Scheme (EU ETS) is so far the largest emissions trading system in the world. A rigorous ex post empirical analysis of the scheme is presented. The effect of the scheme on firms' investment decisions in carbon-reducing technologies is analysed by using detailed firm-level data from Swedish industry. Based on difference-in-difference estimation as well as a before–after difference estimation, the results reveal that the EU ETS has not had a significant effect on firms’ decisions to invest in carbon-mitigating technologies. However, although the EU ETS appears to have no direct effect on investments, it is too early to dismiss the system. Consideration is given to how the EU ETS can realize its potential to become an effective tool in the EU climate and energy policy portfolio.