Tadhg holds a PhD from Dublin Institute of Technology, where in 2010 he completed his research at the Futures Academy on scenarios of the Irish energy system. He has worked in industry as a consultant, in communications and as an environmental manager. Two times a Marie Sklodowska Curie postdoctoral fellow, following two years at the Madrid institute for advanced studies he was postdoctoral fellow and senior researcher at the Finland Futures Research Centre, a global leader in the futures, scenarios, energy and sustainability fields.
Tadhg is currently employed as the economist at the Climate Change Advisory Council. He has published books and academic journal papers, and lectured internationally, in fields as diverse as energy and emissions scenarios, climate change policy, development, economic indicators, political economy and governance, well-being approaches and sustainability.