Prof Brian Ó Gallachóir is Director of the SFI MaREI Research Centre and Professor of Energy Engineering at UCC. He leads MaREI’s research on building and using energy systems models that have underpinned Irish and EU energy and climate mitigation policies and energy company strategies. He is also MaREI’s Education and Public Engagement Champion and received the Science Foundation Ireland Best International Engagement Award 2020. Brian is elected Chair of International Energy Agency Technology Collaboration Programme on energy systems modelling (IEA-ETSAP) and an elected Fellow of the Irish Academy of Engineering. Brian has published extensively (over 110 journal papers and h-index of 42), has a B.Sc. from TCD and a PhD from UCC.