Since the onset of the global financial crisis in 2008, the EU has been tested and contested as it struggled to come to terms with a series of crises, sometimes labelled a polycrisis. In response to crises, the EU has emerged as a collective power and the concept ‘Collective Power Europe’ (CPE) offers a promising lens with which to analyse the 21st-century European Union and the nature of the polity that is emerging. The aim of this article is to unpack the concept of CPE and to analyse its core features – collective leadership and framing, institutional coordination and the evolving policy toolkit – in response to three crises: Brexit, the COVID-19 pandemic and the war in Ukraine.