1. Centre for Environmental Policy, Imperial College London, London, UK.
2. Grantham Institute for Climate Change and the Environment, Imperial College London, London, UK.
3. Energy, Climate and Environment Program, International Institute for Applied Systems Analysis, Laxenburg, Austria.
4. World Resources Institute, Washington, DC, USA.
5. Energy and Resources Group, University of California–Berkeley, Berkeley, CA, USA.
6. PBL Netherlands Environmental Assessment Agency, The Hague, Netherlands.
7. Institute for Environmental Studies (IVM), Vrije Universiteit Amsterdam, Amsterdam, Netherlands.
8. NewClimate Institute, Cologne, Germany.
9. Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, Netherlands.
10. Centre for Energy and Environmental Economics (CENERGIA), Energy Planning Program, COPPE, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.