| Kaiying Power | China | Visit site |
| Kaizen Design Solutions Pvt. Ltd | Mumbai, India | Visit site |
| Kalpa Power Private Limited | Pune, India | Visit site |
| Kalyon Construction Group | Üsküdar, Türkiye | Visit site |
| Kalyoncu Enerji San. ve Tic. Ltd. Şti. | Ortahisar, Türkiye | Visit site |
| Kalzip | Koblenz, Germany | Visit site |
| Kameleon Solar | Roosendaal, Netherlands | Visit site |
| Kamworks Ltd | Phnom Penh, Cambodia | Visit site |
| Kanadevia Inova | Zürich, Switzerland | Visit site |
| Kantor Management Consultants | Athina, Greece | Visit site |
| Kantor Management Consultants | Brussels, Belgium | Visit site |
| Kaoko Green Energy Solutions (Pty) Ltd | Opuwo, Namibia | · |
| Kapdee Tech Design | Mangrol, India | Visit site |
| Kapitein BV | Cruquius, Netherlands | Visit site |
| Kapture | Melbourne, Australia | Visit site |
| KarmSolar | Al Zamalik, Egypt | · |
| Karuk Mühendislik | Yenimahalle, Türkiye | Visit site |
| Karvy Technologies | Mumbai, India | Visit site |
| Kasatec Energia Solar | Santana, Brazil | Visit site |
| Kashyap Solar - A Leading EPC Company | Surat, India | Visit site |
| Katowice City - live, work & invest | Katowice, Poland | Visit site |
| Katrick Technologies Ltd | Glasgow, United Kingdom | · |
| Kaufmann Electric GmbH | Schwegenheim, Germany | Visit site |
| Kaya Wind | Menemen, Türkiye | Visit site |
| Kayser GmbH | Weißenburg in Bayern, Germany | Visit site |
| Kedma Solar - קדמה סולארי | Tel Aviv-Yafo, Israel | Visit site |
| Kedma Solar - קדמה סולארי | Holon, Israel | Visit site |
| Keheng Energy-- LiFePO4 Battery Manufacturer | Shenzhen Shi, China | Visit site |
| Kemexon | Genève, Switzerland | Visit site |
| Kemexon | Hong Kong, Hong Kong | Visit site |
| Kemexon | Ixelles, Belgium | Visit site |
| Kemexon | Dubai, United Arab Emirates | Visit site |
| Kemexon | Johannesburg, South Africa | Visit site |
| Kennen Automation Pvt Ltd | Noida, India | Visit site |
| Kennew Srl | Nembro, Italy | · |
| Kenny Solar | Perth, Australia | Visit site |
| Kenny Solar | Sydney, Australia | Visit site |
| Kensa | Truro, United Kingdom | Visit site |
| Kenya Renewable Energy Association - KEREA | Kenyatta, Kenya | Visit site |
| Kermi Raumklima | Plattling, Germany | Visit site |
| Kerrigan Mechanical Ltd. | The Ward, Ireland | Visit site |
| Kerrigan Mechanical Ltd. | Athboy, Ireland | Visit site |
| Kesir | Dilovası, Türkiye | Visit site |
| Kewo Electric Technology Co.,Ltd | China | Visit site |
| Keymex Energy | León, Mexico | Visit site |
| Khatib & Alami | Singapore, Singapore | Visit site |
| Kier Group | Ramsgate, United Kingdom | Visit site |
| Kilimo | Córdoba, Argentina | Visit site |
| KiloLima | Maadi, Egypt | Visit site |
| Kinetic Solar Racking and Mounting | Carleton Place, Canada | Visit site |
| KingPower Battery | Guangzhou Shi, China | · |
| Kingfit Energy | Lishui Shi, China | Visit site |
| Kingspan Insulated Panels UK & Ireland | Holywell, United Kingdom | Visit site |
| Kingspan Isoeste | Goiás, Brazil | Visit site |
| Kingston Process Metallurgy Inc. (KPM) | Kingston, Canada | Visit site |
| Kino Energia | Mexico City, Mexico | Visit site |
| Kinse Solar | 新豐鄉, Taiwan | Visit site |
| Kinsend Metal | 新豐鄉, Taiwan | Visit site |
| Kinsend Metal | China | Visit site |
| Kinsend Solar | 新豐鄉, Taiwan | Visit site |
| Kintetsu World Express | 東京都, Japan | Visit site |
| Kintetsu World Express | Australia | Visit site |
| Kintetsu World Express | Bangladesh | Visit site |
| Kintetsu World Express | Cambodia | Visit site |
| Kintetsu World Express | China | Visit site |
| Kintetsu World Express | Hong Kong, Hong Kong | Visit site |
| Kintetsu World Express | India | Visit site |
| Kintetsu World Express | Indonesia | Visit site |
| Kintetsu World Express | Japan | Visit site |
| Kintetsu World Express | South Korea | Visit site |
| Kintetsu World Express | Malaysia | Visit site |
| Kintetsu World Express | Myanmar | Visit site |
| Kintetsu World Express | Philippines | Visit site |
| Kintetsu World Express | Singapore, Singapore | Visit site |
| Kintetsu World Express | Sri Lanka | Visit site |
| Kintetsu World Express | Taiwan | Visit site |
| Kintetsu World Express | Thailand | Visit site |
| Kintetsu World Express | Vietnam | Visit site |
| Kintetsu World Express | Bahrain | Visit site |
| Kintetsu World Express | Saudi Arabia | Visit site |
| Kintetsu World Express | Mol, Belgium | Visit site |
| Kintetsu World Express | Czech Republic | Visit site |
| Kintetsu World Express | France | Visit site |
| Kintetsu World Express | Germany | Visit site |
| Kintetsu World Express | Ireland | Visit site |
| Kintetsu World Express | Italy | Visit site |
| Kintetsu World Express | Russia | Visit site |
| Kintetsu World Express | South Africa | Visit site |
| Kintetsu World Express | Sweden | Visit site |
| Kintetsu World Express | Switzerland | Visit site |
| Kintetsu World Express | United Arab Emirates | Visit site |
| Kintetsu World Express | United Kingdom | Visit site |
| Kintetsu World Express | Brazil | Visit site |
| Kintetsu World Express | Canada | Visit site |
| Kintetsu World Express | Mexico | Visit site |
| Kintetsu World Express | United States | Visit site |
| Kipeto Energy PLC | Kajiado, Kenya | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | ميناء عبدالله الصناعية, Kuwait | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | الشعيبة الصناعية الغربية, Kuwait | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | Ras Al Khaimah, United Arab Emirates | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | Ho Chi Minh City, Vietnam | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | Haridwar, India | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | Hyderabad, India | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | India | Visit site |
| Kirby Building Systems - A group company of Alghanim Industries | Haida Gwaii, Canada | Visit site |
| Kiwa | Rijswijk, Netherlands | Visit site |
| Kiwapower | Mexico City, Mexico | Visit site |
| Klaer | Groningen, Netherlands | Visit site |
| Klas Kablo | Şahinbey, Türkiye | Visit site |
| Klaus Faber | Saarbrücken, Germany | Visit site |
| Kleines Kraftwerk DE GmbH | Achim, Germany | Visit site |
| KlimaEnergi A/S - Solceller | Egtved, Denmark | Visit site |
| Klinger und Partner GmbH | Stuttgart, Germany | Visit site |
| Klohn Crippen Berger | Vancouver, Canada | Visit site |
| Koehler Energy Group | Oberkirch, Germany | Visit site |
| Koehler Energy Group | Willstätt, Germany | Visit site |
| Koehler Energy Group | Dundee, United Kingdom | Visit site |
| Kofa | Accra, Ghana | · |
| Kohlbach Group | Wolfsberg, Austria | · |
| Koloğlu Holding | Çankaya, Türkiye | Visit site |
| Kolya Renovables | Spain | · |
| KomfoTrade Zrt. | Budapest, Hungary | Visit site |
| Koneksun | Saint-Germain-du-Puch, France | Visit site |
| KonkaEnergy | Terrassa, Spain | Visit site |
| Kontron Solar | Memmingen, Germany | Visit site |
| Koolen Industries | Hengelo, Netherlands | · |
| Koppejan Wind Service B.V. | Kootwijkerbroek, Netherlands | · |
| Kor Energy (India) Private Limited | New Delhi, India | Visit site |
| Korax Solar | Ráckeve, Hungary | Visit site |
| Kostal Solar | Freiburg im Breisgau, Germany | · |
| Koubaras Ltd | Athina, Greece | Visit site |
| Koło Naukowe Nova Energia | Kraków, Poland | Visit site |
| Kraftanlagen Energies & Services | München, Germany | · |
| Kraftfeld Energy | Vienna, Austria | Visit site |
| Kraftringen | Lund, Sweden | Visit site |
| Kreutzpointner Unternehmensgruppe | Burghausen, Germany | Visit site |
| Krinner Solar | Straßkirchen, Germany | Visit site |
| Krone Solar | Bucharest, Romania | Visit site |
| Kronos Solar - EDPR | München, Germany | Visit site |
| Kryptonian | Ahmedabad, India | · |
| Kshema Power | Chennai, India | Visit site |
| Ktech Energy | Wuxi Shi, China | Visit site |
| Kuby Renewable Energy | Edmonton, Canada | Visit site |
| Kudura Power East Africa Ltd | Анцух, Russia | Visit site |
| Kuga Energy | Melbourne, Australia | Visit site |
| Kung Long Batteries | 南投市, Taiwan | · |
| Kverneland Energi | Klepp Stasjon, Norway | Visit site |
| Kweight Technology | Shenzhen Shi, China | Visit site |
| Kylemore Capital | London, United Kingdom | Visit site |
| Kyocera | 京都市, Japan | Visit site |