Neil J Hewitt was appointed Professor of Energy in 2008 and is Director of the Centre for Sustainable Technologies from 2008 until present. He is a Chartered Physicist and Chartered Engineer and is a member of the Institute of Physics, Institute of Refrigeration and the Energy Institute.Professor Hewitt has initiated and worked on numerous significant European and UK Research Council funded research projects that have engaged academia, public and private bodies.Professor Hewitt is an acknowledged expert in the field of heat pumps, both in their development and in their end-use, especially with energy storage in the emerging sector of demand side management.  He has over 100 publications and is a regular invited conference speaker both nationally and abroad.Professor Hewitt, is the UK representative of the International Institute of Refrigeration Commission B2 Refrigerating Machinery and is also a UK member of IEA Heat Pumping Technologies Annexes.