A trained geologist and geophysicist, Graeme has been measuring and modelling crustal temperatures and the thermal properties of crustal materials since 1990. He has published numerous journal and conference papers and is co-author of the monograph "Crustal heat flow: a guide to measurement and modelling" (2001; Cambridge University Press). He is a part time Research Fellow at the University of Melbourne, and an Adjunct Research Fellow at Monash University. He supervises students undertaking geothermal energy projects at postgraduate level.

Graeme is a Board member of the International Geothermal Association (IGA), and a member of the Forum of the Western Pacific Regional Branch (WPRB) of the IGA; he is a member of the Geothermal Resources Council (GRC), Petroleum Exploration Society of Australia (PESA), Australian Society of Exploration Geophysicists (ASEG), Geological Society of Australia (GSA), and the American Geophysical Union (AGU).

He has visited and investigated many geothermal fields and operations around the world, presented papers at many geothermal meetings, and maintains an extensive network of contacts with geothermal researchers and consultants around the world. Graeme oversees the technical and business development of Hot Dry Rocks.