Dr. Phillip Widger received the Ph.D. and B.Eng. degrees in electrical and electronic engineering from Cardiff University, UK in 2014 and 2010 respectively. Between 2010 and 2014, he worked towards his Ph.D. degree in the Advanced High Voltage Engineering Research Centre at Cardiff University, Institute of Energy, and School of Engineering. His research is focused on alternatives gases to SF6, specialising in gas mixtures of CF3I, for use in distribution and transmission networks. SF6 is a global warming gas with a global warming potential approximately 23,900 times that of CO2 and a very long atmospheric lifetime. Research is focused on environmentally friendly alternatives that can safely insulate high voltage electrical power equipment for a more sustainable future electricity network.