1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
2. US Department of Energy (USDOE), Washington DC (United States)
3. Univ. of Massachusetts, Amherst, MA (United States)
4. Univ. of Maryland, College Park, MD (United States)
5. Lumina Decision Systems, Inc., Los Gatos, CA (United States)
6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
7. Colorado School of Mines, Golden, CO (United States)
8. PricewaterhouseCoopers, London (United Kingdom)
9. RAND Corp., Santa Monica, CA (United States)
10. Univ. of Oxford (United Kingdom)