Ralph Sims

Professor of Sustainable Energy

Massey University


Ralph Sims is Professor of Sustainable Energy at Massey University, New Zealand where he has researched renewable energy systems and climate change mitigation for several decades. He chaired the Royal Society of New Zealand panel for the 2016 study Transition to a Low-Carbon Economy for New Zealand and for the Intergovernmental Panel on Climate Change (IPCC) has led chapter teams of authors on Energy Supply (2007), Renewable Energy Integration (2011), and Transport (2014). He was Senior Researcher in the Renewable Energy Division at the International Energy Agency (IEA) in Paris for four years, and for 6 years covered climate change mitigation as a member of the Scientific and Technical Advisory Panel for the Global Environment Facility (GEF, based in Washington D C and linked with UNEP and World Bank). He represented STAP on the World Bank Sustainable Cities programme. He has been contracted by UN Food and Agricultural Organisation to lead several projects on “energy-smart food” and has consulted for many organisations including OECD, Shell International, Chevron and Meridian Energy.


  • Professor of Sustainable Energy

    Massey University