Ralph E. H. Sims is Emeritus Professor of Sustainable Energy and Climate Mitigation at Massey University, New Zealand. In a distinguished career spanning 50 years, Professor Sims has also worked for the International Energy Agency, produced major reports on rural energy for the OECD, UNFCCC and UN FAO, been Director of the Centre for Energy Research at Massey University and contributed to five IPCC reports, including leading chapters on energy supply, transport and renewable energy integration. Dr Troy Jensen is Associate Professor and Principal Research Fellow (Precision Agriculture) at the Centre for Agricultural Engineering, University of Southern Queensland, Australia. He has also been developing innovative market entry solutions to precision spot spraying and providing technologies to monitor crops at a very fine spatial and temporal scale, along with using his extensive agricultural experience to provide valuable post graduate student supervision. Ralph E. H. Sims is Emeritus Professor of Sustainable Energy and Climate Mitigation at Massey University, New Zealand. In a distinguished career spanning 50 years, Professor Sims has also worked for the International Energy Agency, produced major reports on rural energy for the OECD, UNFCCC and UN FAO, been Director of the Centre for Energy Research at Massey University and contributed to five IPCC reports, including leading chapters on energy supply, transport and renewable energy integration.