Brian Ó Gallachóir is Professor of Energy Engineering at University College Cork and Director of MaREI, the €70 million SFI Research Centre for Energy Climate and Marine. Brian 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. Brian is also the elected Chair of the International Energy Agency Technology Collaboration Programme on energy systems modelling (IEA-ETSAP) and received the Science Foundation Ireland Best International Engagement Award 2020. He has increased the transdisciplinary nature of MaREI’s research, as evidenced by the flagship Dingle Peninsula 2030 partnership project. Brian and an elected Fellow of the Irish Academy of Engineering, has published extensively (over 125 journal papers with nearly 8,000 citations), has a B.Sc. from TCD and a PhD from UCC.