| PTI Transformers | Winnipeg, Canada | Visit site |
| PTW Energy Services | Rocky View County, Canada | Visit site |
| PURE SOLAR | Wuxi Shi, China | Visit site |
| PUREPOWER Engineering SA | Rosenheim, Germany | Visit site |
| PV Build Ltd | Черни връх, Bulgaria | · |
| PV CYCLE | Woluwe-Saint-Lambert, Belgium | Visit site |
| PV Control | Rhenen, Netherlands | Visit site |
| PV Diagnostics | New Delhi, India | Visit site |
| PV ENGINEERING AUSTRALIA | Sunshine Coast, Australia | Visit site |
| PV Eurosolution | Verona, Italy | Visit site |
| PV Generation | Caherlag, Ireland | · |
| PV Mounts | Xiamen Shi, China | Visit site |
| PV Partner | Altınekin, Türkiye | Visit site |
| PV QUALITY - Sachverständigenbüro für Photovoltaik - Aachen | Aachen, Germany | Visit site |
| PV Solutions Inc. | Cebu City, Philippines | Visit site |
| PV-Invest GmbH | Klagenfurt am Wörthersee, Austria | Visit site |
| PV2+ GmbH | Freiburg im Breisgau, Germany | Visit site |
| PVFix - Solar Module Mounting Structures | Mulshi, India | · |
| PVMAINT | Ilio, Greece | Visit site |
| PVMAINT | Chalandri, Greece | Visit site |
| PVMars Solar | Fuoshan Shi, China | Visit site |
| PVPro ApS | Herning, Denmark | Visit site |
| PVinsight RSA | Port Elizabeth, South Africa | Visit site |
| PVolution | Grünwald, Germany | Visit site |
| PVthin | Brussels, Belgium | · |
| PV³ GmbH | Radevormwald, Germany | · |
| Pacific Green | London, United Kingdom | Visit site |
| Pacific Ropes | Burnaby, Canada | Visit site |
| Pacific Solar Pty Ltd | Australia | Visit site |
| Pacific Sun Solar | Melbourne, Australia | Visit site |
| Pacifico Energy Partners | München, Germany | Visit site |
| Paharpur Cooling Towers | Kolkata, India | Visit site |
| Paiva Energia | Natal, Brazil | Visit site |
| Palladio Partners | Frankfurt am Main, Germany | Visit site |
| Pampa Energia | Buenos Aires, Argentina | Visit site |
| Pampa Energia | Berisso, Argentina | Visit site |
| Pampa Energia | Brazil | Visit site |
| Pan Gulf Technologies Limited | India | Visit site |
| PanSolar | Bucharest, Romania | Visit site |
| Panasonic | 門真市, Japan | · |
| Panda Solar | Dhaurahara, India | Visit site |
| Pantegra Ingenieure GmbH | Neu-Isenburg, Germany | Visit site |
| Parallel Carbon | Manchester, United Kingdom | · |
| Paralos Energy | Amarousio, Greece | · |
| Param Renewable Energy | Bengaluru, India | · |
| Paramount Wires & Cables | New Delhi, India | Visit site |
| Parapet | Cluj-Napoca, Romania | Visit site |
| Parkwind | Leuven, Belgium | Visit site |
| Parla Solar | Honaz, Türkiye | Visit site |
| Parlym | Marseille, France | Visit site |
| Particip GmbH | Freiburg im Breisgau, Germany | Visit site |
| Partum Engineering | Perth, Australia | Visit site |
| Paterson Group Inc. | Nepean, Canada | Visit site |
| Path Energy | Leeds, United Kingdom | Visit site |
| Pathfinder Clean Energy (PACE) Limited | London, United Kingdom | Visit site |
| Patil Automation Ltd. | Chakan, India | Visit site |
| Patil Automation Ltd. | Mawal, India | Visit site |
| Patil Automation Ltd. | Mulshi, India | Visit site |
| Patras Science Park ( Επιστημονικό Πάρκο Πατρών) | Patra, Greece | Visit site |
| Pavegen | London, United Kingdom | · |
| PcVue | Boulogne-Billancourt, France | Visit site |
| Peaceinvest | Genève, Switzerland | Visit site |
| Peak Power Inc | Toronto, Canada | · |
| Pearl Energy Solution Pvt LTD | Macapá, Brazil | Visit site |
| Pecso | Abu Dhabi, United Arab Emirates | Visit site |
| Peimar | Brescia, Italy | Visit site |
| Pekat Group Berhad | Petaling Jaya, Malaysia | Visit site |
| Pekintaş Construction | Şişli, Türkiye | Visit site |
| Pekintaş Construction | Istanbul, Türkiye | Visit site |
| Pekintaş Construction | Düzce, Türkiye | Visit site |
| Pele Green Energy | Johannesburg, South Africa | Visit site |
| Pelion Green Future | Brownsburg-Chatham, Canada | Visit site |
| Penfolds Roofing & Solar | Coquitlam, Canada | Visit site |
| Pennavel | Lorient, France | Visit site |
| Pennecon | St. John's, Canada | Visit site |
| Penspen | London, United Kingdom | Visit site |
| Pentas Flora | Kuala Lumpur, Malaysia | Visit site |
| PerPetum Energy | Nazareth, Belgium | Visit site |
| Perfection Électrique | Saint-Léonard, Canada | Visit site |
| Peridot Solar | Milano, Italy | Visit site |
| Perle Industrieservice GmbH & Co. KG | Emsbüren, Germany | Visit site |
| Perlight Solar | Taizhou Shi, China | Visit site |
| Perosol | Stuttgart, Germany | · |
| Perth Solar Force | Perth, Australia | Visit site |
| Perth Solar Warehouse | Perth, Australia | Visit site |
| Pesasun GmbH | Waldaschaff, Germany | · |
| Peter Wärmepumpen GmbH | Kleinandelfingen, Switzerland | · |
| Petra Energia Solar Vinhedo e Região | São Paulo, Brazil | Visit site |
| Petra Energia Solar Vinhedo e Região | Brazil | Visit site |
| Petrofac | London, United Kingdom | · |
| Petrokon Utama Sdn Bhd | Kuala Belait, Brunei | Visit site |
| Petrokon Utama Sdn Bhd | Liang, Brunei | Visit site |
| Petrokon Utama Sdn Bhd | Miri, Malaysia | Visit site |
| Petrokon Utama Sdn Bhd | Petaling Jaya, Malaysia | Visit site |
| Petrokon Utama Sdn Bhd | Chennai, India | Visit site |
| Petrokon Utama Sdn Bhd | Muntinlupa, Philippines | Visit site |
| Petrokon Utama Sdn Bhd | Abu Dhabi, United Arab Emirates | Visit site |
| Petrol Group | Ljubljana, Slovenia | Visit site |
| Petrotec For General contracting | Al Hawamdia, Egypt | · |
| Pexapark | Schlieren, Switzerland | Visit site |
| Phaesun | Memmingen, Germany | Visit site |
| Phasor Capital | Coslada, Spain | · |
| Phasor Engineering Inc | Calgary, Canada | Visit site |
| Phelps Dodge | United States | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Bogotá, Colombia | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Las Condes, Chile | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Sopó, Colombia | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Barranquilla, Colombia | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Miraflores, Peru | Visit site |
| Philippi Prietocarrizosa Ferrero DU & Uria | Madrid, Spain | Visit site |
| Phinergy | Tel Aviv-Yafo, Israel | · |
| Phlair | München, Germany | Visit site |
| Phocos | Ulm, Germany | Visit site |
| PhotoVolt Solar | Dubai, United Arab Emirates | Visit site |
| Photomapping | Perth, Australia | Visit site |
| Photomate | České Budějovice, Czech Republic | Visit site |
| Photons Energy Ltd | Tanzania | Visit site |
| Photovoltaic Solar | Vadodara, India | Visit site |
| Photovoltaic Solar | Mahesana, India | Visit site |
| Photovoltaic Solar | Anand, India | Visit site |
| Photovoltaic Solar | Amreli, India | Visit site |
| Photowatt | Bourgoin-Jallieu, France | Visit site |
| Phylion | Suzhou Shi, China | · |
| Phytonics | Karlsruhe, Germany | Visit site |
| Pi Green Innovations Pvt. Ltd. | India | Visit site |
| Pi Green Innovations Pvt. Ltd. | Chakan, India | Visit site |
| PiLDER | Kadıköy, Türkiye | Visit site |
| Pickrenew Energy Pvt. Ltd. | Indore, India | Visit site |
| Piclo | London, United Kingdom | Visit site |
| Picrogrid | Berkeley, USA | Visit site |
| Pilecom Pty Ltd | Australia | Visit site |
| Piled Co | · | Visit site |
| Pilsan Elektronik | Ümraniye, Türkiye | Visit site |
| Pinchin in Canada | Mississauga, Canada | Visit site |
| Pink GmbH Energie- und Speichertechnik | Langenwang, Austria | · |
| Pioneer Engineering & Construction LLC | Makkah Al Mukarramah, Saudi Arabia | Visit site |
| Pioneer Xenergy Pvt. Ltd | Chennai, India | Visit site |
| Piper Maddox | London, United Kingdom | Visit site |
| PiteEnergi | Piteå, Sweden | Visit site |
| Piwiénergies | Yenne, France | · |
| Pixel Solar Inverter | Bor, Türkiye | Visit site |
| Pixii | Kristiansand, Norway | · |
| Pknergy Energy | 八里區, Taiwan | Visit site |
| PlanET Biogastechnik GmbH | Gescher, Germany | Visit site |
| PlanET Biogás Brasil | Florianópolis, Brazil | Visit site |
| PlanSinn Planung & Kommunikation GmbH | Vienna, Austria | Visit site |
| Planet A Ventures | Pontevedra, Argentina | Visit site |
| Planet Solar Antillas, LLC. | San Lorenzo, Puerto Rico | Visit site |
| Planet Solar Antillas, LLC. | Caguas, Puerto Rico | Visit site |
| Planet Solar Antillas, LLC. | Culebra, Puerto Rico | Visit site |