| Population Services International | Non-Governmental Organization |
| Practical Action | Non-Governmental Organization |
| Practical Action Bangladesh | Non-Governmental Organization |
| Practical Action in Nepal | Non-Governmental Organization |
| Prakti Design Lab | Private Industry |
| Pratham | Non-Governmental Organization |
| PRC Global Pte.Ltd | Private Industry |
| Pro-biodiversity Conservationits in Uganda (PROBICOU) | Non-Governmental Organization |
| Project Gaia | Independent Consultant |
| Project Surya | Academia |
| Proleña | Non-Governmental Organization |
| ProPeru | Non-Governmental Organization |
| Proyecto Mirador | Non-Governmental Organization |
| Public-Private Alliance Foundation | Non-Governmental Organization |
| Pulsee International Network | Private Industry |
| Qingdao Institute of Bioenergy and Bioprocess Technology | Academia |
| Queen Mary University London | Academia |
| Rahman Renewable Energy Co. | Private Industry |
| Rakai women's Effort to save the Environment (RAWESE) | Non-Governmental Organization |
| Regional Programme to Promote Household and Alternative Energies in the Sahel (PREDAS) | Multilateral |
| Relief International-EnterpriseWorks/VITA | Non-Governmental Organization |
| Renewable Energy & Energy Efficiency Institute (REEEI) | Academia |
| Renewable Energy and Energy Efficiency Partnership | Academia |
| Renewgen Systems Inc. | Independent Consultant |
| Resource Efficient Agricultural Production - Canada (REAP - Canada) | Non-Governmental Organization |
| Restio Energy | Independent Consultant |
| Rotary Club of Fresno | Non-Governmental Organization |
| RTI International | Non-Governmental Organization |
| Rural African Renewable Energy Project | Non-Governmental Organization |
| Rural Energy Development Programme | Non-Governmental Organization |
| Rural Mutual Development | Non-Governmental Organization |
| Rural Region and Agro-forestry Development Centre (RRAFDC) | Non-Governmental Organization |
| Safe Environment Conservation Management | Private Industry |
| Samuchit Enviro Tech Pvt Ltd | Private Industry |
| San Diego State University | Academia |
| Sanjay Technoplast Pvt. Ltd. | Private Industry |
| SEED Bangla Foundation | Non-Governmental Organization |
| Servals Automation Private Limited | Private Industry |
| SHARAN | Non-Governmental Organization |
| Shell Foundation | Private Industry |
| Shengzhou Stove Manufacturer | Private Industry |
| Shri Jagdamba Samiti | Non-Governmental Organization |
| Sierra Club | Non-Governmental Organization |
| SilverCeramicSystems.com | Other Organization Type |
| SKG SANGHA | Non-Governmental Organization |
| smallsolutions | Other Organization Type |
| SNV Laos | Independent Consultant |
| SNV Netherlands Development Organisation | Non-Governmental Organization |
| Soil Control Lab | Private Industry |
| Solar Connect Association | Non-Governmental Organization |
