Stephen Carr is currently a research fellow at the University of South Wales, UK. He received his Mphys degree in Physics from the University of Oxford in 2004, and his PhD in energy systems modelling from the University of Glamorgan in 2010. He has worked on the UK Sustainable Hydrogen Energy Consortium (UKSHEC) Supergen project funded by the EPSRC, investigating the optimal use of hydrogen energy storage on electricity networks. His has recently worked on the CymruH2Wales project investigating renewable hydrogen systems, and the Innovate UK funded Island Hydrogen project investigating optimal operation of hydrogen refuelling systems for vehicles. His current research interests include electricity systems modelling, energy storage and hydrogen energy systems.