|
Brookings Institution (United States)
22
|
Center for Strategic and International Studies (United States)
17
|
RAND Corporation (United States)
3
|
|
Environment for Development Initiative (Sweden)
2
|
Fraser Institute (Canada)
2
|
Wuppertal Institute for Climate, Environment and Energy (Germany)
2
|
|
Center for American Progress (United States)
1
|
Institute of Energy Economics, Japan (Japan)
1
|
Resources for the Future (United States)
1
|
