Open a textbook on the EU’s political system and you will likely find the European Commission described as a powerhouse of policy innovation, particularly when it comes to areas of positive integration, such as environmental policy. Yet, in the aftermath of the financial and economic crisis, this powerhouse seems to have run out of steam. In their article “Still an entrepreneur? The changing role of the European Commission in EU environmental policy-making” published in the Journal of European Public Policy, Yves Steinebach and Christoph Knill analyse the EU’s policy outputs on clean air and water protection between 1980 and 2014. Their analysis shows that the EU’s regulatory activity slumped after 2010, which they trace back to a sharp decline in environmental policy activism in the European Commission. Yves and Christoph argue that changes to the role of the Commission presidency have gone hand in hand “with reduced policy activism and initiatives in economically sensitive policy areas”.