Mark O'Malley is the Professor of Electrical Engineering at University College Dublin (UCD) and founding Director of the Electricity Research Centre, a multidisciplinary, multi institutional, industry supported research activity. He is a foreign member of the US National Academy of Engineering, a member of the Royal Irish Academy and a Fellow of the Institute of Electrical and Electronic Engineers and has received two Fulbright Fellowships. Mark is recognized as a world authority on Energy Systems Integration and in particular Grid Integration of Renewable Energy. He is currently on sabbatical at the US National Renewable Energy Laboratory as Chief Scientist, Energy Systems Integration. He was the co-founder and Director of the International Institute of Energy Systems Integration which in 2018 merged with the Utility Variable Integration Group to form the Energy Systems Integration Group (ESIG). He is now the Chair of the ESIG Research and Education Working Group.