| Progressum Energy Developments | Roma, Italy | Visit site |
| Project Renewable | Sydney, Australia | Visit site |
| Projeto Legal Engenharia Inteligente | Getúlio Vargas, Brazil | Visit site |
| Projeto Legal Engenharia Inteligente | Viamão, Brazil | Visit site |
| Prokon New Energy Poland Sp. z o.o. | Gdańsk, Poland | Visit site |
| Prokon Regenerative Energien eG | Itzehoe, Germany | Visit site |
| Prolux Solutions | Germany | Visit site |
| Prolux Solutions | Switzerland | Visit site |
| Pronen Enerji | Merkezefendi, Türkiye | Visit site |
| Pronto Power | Burgerveen, Netherlands | Visit site |
| Propellane | Paris, France | Visit site |
| Properate | Port Moody, Canada | Visit site |
| Prosemino | London, United Kingdom | · |
| Prosolia Energy Group | València, Spain | Visit site |
| Prosun Solar Australia | Melbourne, Australia | · |
| Protecnium | Mérida, Spain | Visit site |
| Protium | London, United Kingdom | Visit site |
| Proton Motor Fuel Cell GmbH | Puchheim, Germany | Visit site |
| Proton Power Engineering | Parauapebas, Brazil | Visit site |
| Protonera | Cambridge, United Kingdom | Visit site |
| Provident Energy Management | Vaughan, Canada | Visit site |
| Prowind GmbH | Osnabrück, Germany | Visit site |
| Proxima Fusion | München, Germany | Visit site |
| Proxima Solutions GmbH | Berlin, Germany | · |
| ProyectaRenovables | Madrid, Spain | Visit site |
| Proyectos Integrales del Ecuador PIL S.A. | Quito, Ecuador | Visit site |
| Proyfe Brasil | Jaboatão dos Guararapes, Brazil | Visit site |
| Proyten | Napoli, Italy | Visit site |
| Prozeal Green Energy Limited | Ahmedabad, India | Visit site |
| PuREEnergy India | Kandi, India | Visit site |
| PuREEnergy India | Hyderabad, India | Visit site |
| Pulsar Power | Antwerpen, Belgium | · |
| Pulse Clean Energy | London, United Kingdom | Visit site |
| Punta | Kisko, Finland | Visit site |
| Punta | Helsinki, Finland | Visit site |
| Purammon Ltd. | Bet Shemesh, Israel | Visit site |
| Purammon Ltd. | Pardesiya, Israel | Visit site |
| Pure Energie | Enschede, Netherlands | Visit site |
| Pure Power - Solar Energy | Cairo, Egypt | · |
| Pure Solar | Wuxi Shi, China | Visit site |
| Purpose Capital | Auckland, New Zealand | Visit site |
| Purpose Capital | New Zealand | Visit site |
| Purshotam Profiles | New Delhi, India | Visit site |
| Pyramid Electronics | Nalagarh, India | · |
| Pysé | Dubai, United Arab Emirates | Visit site |
| Pysé | Bengaluru, India | Visit site |
| PÜSPÖK Erneuerbare Energie | Parndorf, Austria | Visit site |
| Pérez-Llorca | Madrid, Spain | Visit site |
| Pérez-Llorca | Belgium | Visit site |
| Pérez-Llorca | Portugal | Visit site |
| Pérez-Llorca | United Kingdom | Visit site |
| Pérez-Llorca | Spain | Visit site |
| Pérez-Llorca | Colombia | Visit site |
| Pérez-Llorca | Mexico | Visit site |
| Pérez-Llorca | United States | Visit site |
| Pérez-Llorca | Singapore, Singapore | Visit site |
| Pöyry | São Paulo, Brazil | · |
| Q CELLS Italia | Bitterfeld-Wolfen, Germany | Visit site |
| Q CELLS Italia | Berlin, Germany | Visit site |
| Q ENERGY | Berlin, Germany | Visit site |
| Q Group | Konyaaltı, Türkiye | Visit site |
| Q Power Oy | Parainen, Finland | Visit site |
| Q-Bot Ltd | Worthing, United Kingdom | Visit site |
| Q-SUN Solar | Nanjing Shi, China | Visit site |
| QALITEC | Frankfurt am Main, Germany | Visit site |
| QALITEC | Darmstadt, Germany | Visit site |
| QANNT | Béziers, France | Visit site |
| QD-SOL LTD. | San Rafael, Argentina | Visit site |
| QEED | Longarone, Italy | Visit site |
| QH Tech | Guangzhou Shi, China | · |
| QHeat | Helsinki, Finland | Visit site |
| QKSOL - ENERGY SOLUTIONS | El Papiol, Spain | Visit site |
| QMC Metering Solutions | Port Coquitlam, Canada | Visit site |
| QST Power Energy | غرب الجليب - الشدادية, Kuwait | Visit site |
| QSTECH | Suzhou Shi, China | · |
| QUADRA energy | Düsseldorf, Germany | Visit site |
| QUALUM | Zapopan, Mexico | Visit site |
| QUANTICA Renovables | Bollullos de la Mitación, Spain | · |
| QUBIZ.team | Bilbao, Spain | Visit site |
| QUBIZ.team | Leioa, Spain | Visit site |
| QUICK SOLAR PRIVATE LIMITED | Tiruppur, India | Visit site |
| QX Global Group | London, United Kingdom | Visit site |
| QX Global Group | United Kingdom | Visit site |
| QX Global Group | India | Visit site |
| QX Global Group | Mexico | Visit site |
| Qair Deutschland | München, Germany | Visit site |
| Qair France - Qair Group | Montpellier, France | Visit site |
| Qair UK - Qair Group | Liverpool, United Kingdom | Visit site |
| Qcells Benelux | José León Suárez, Argentina | · |
| Qcells España y Portugal | José León Suárez, Argentina | Visit site |
| Qcells Europe | Berlin, Germany | Visit site |
| Qifan Cable | Pilot Mound, Canada | Visit site |
| Qinfeng Wire and Cable | China | Visit site |
| Qint’x | Cervia, Italy | Visit site |
| Qkera | Laval, Canada | · |
| Qn-SOLAR | Shanghai, China | Visit site |
| Qn-Solar | Shanghai, China | · |
| Qoltec | Lund, Sweden | Visit site |
| Qssun Solar | Saudi Arabia | Visit site |
| QuadSol (Part of Solar Bay) | Sydney, Australia | Visit site |
| Qualitas Energy Deutschland GmbH | Berlin, Germany | Visit site |
| Quant Solar | Hyderabad, India | Visit site |
| Quantified Energy | Singapore, Singapore | · |
| Quantum Saudi ESCO | Ad Dammam, Saudi Arabia | Visit site |
| Quantum Saudi ESCO | Kutno, Poland | Visit site |
| Quantum Saudi ESCO | Dubai, United Arab Emirates | Visit site |
| Quantum Saudi ESCO | Milano, Italy | Visit site |
| Quantum Saudi ESCO | مهزة, Bahrain | Visit site |
| Quark Sener Group | Getxo, Spain | Visit site |
| Quark Solar | Mumbai, India | · |
| Quark Technologies | Cluj-Napoca, Romania | Visit site |
| Quartux | Mexico City, Mexico | · |
| Quasar Consulting Group | Vancouver, Canada | Visit site |
| Quatt | Amsterdam, Netherlands | Visit site |
| Qube Technologies | Calgary, Canada | Visit site |
| Queen Solar | Suzhou Shi, China | Visit site |
| Queensland Renewable Energy Council (QREC) | Brisbane, Australia | Visit site |
| Quest Global | Singapore, Singapore | · |
| Quest One | Augsburg, Germany | Visit site |
| Quinn Downes Group | Dublin, Ireland | Visit site |
| Quintas Advisory | Sevilla, Spain | · |
| Quintas Analytics | Sevilla, Spain | · |
| Quintas Energy | Sevilla, Spain | · |
| Québec Solar Inc. | Montréal, Canada | · |
| Quénéa | Carhaix-Plouguer, France | Visit site |
| Qvantum Deutschland | Kulmbach, Germany | · |
| R Energy 1 Holdings SA | Amarousio, Greece | Visit site |
| R Power | Lahore, Pakistan | · |
| R&R Consult | Frederiksberg, Denmark | Visit site |
| R-energy | Eindhoven, Netherlands | Visit site |
| R.Power Renewables | Warszawa, Poland | Visit site |
| R.V. Anderson Associates Limited | Toronto, Canada | Visit site |
| R2Energy | Warszawa, Poland | Visit site |
| RA-Tech Engineering | Mumbai, India | Visit site |
| RABLE | Delft, Netherlands | · |
| RAD ENERGY S. L. | Spain | Visit site |
| RAEMA STAR SOLAR PRIVATE LIMITED | Ghaziabad, India | Visit site |
| RAJA New Energy | Chengdu Shi, China | Visit site |
| RANA ENERGY CO. | Tehran, Iran | Visit site |
| RANA ENERGY CO. | Bushehr, Iran | Visit site |
| RASLAG Corp. | Pasig, Philippines | Visit site |
| RASLAG Corp. | Mexico, Philippines | Visit site |
| RAW Energy | Kuala Lumpur, Malaysia | Visit site |
| RAW Solid Fuels | Kuala Lumpur, Malaysia | Visit site |
| RCD | Barcelona, Spain | Visit site |
| RDT | Zamudio, Spain | Visit site |
| RE Technologies GmbH | Hamburg, Germany | Visit site |
| RE Technologies GmbH | Mumbai, India | Visit site |
| RE-Source Platform | Brussels, Belgium | Visit site |
| RE:GEN Group | Sunderland, United Kingdom | Visit site |