| 11821 | Greece | Ilektrorank | 14th km. National Road Xanthis Iasmou, Sounio Xanthis Τ.Κ. 67100 | +30 2541 032788 | www.ilektrorank.com | | |
| 11822 | Greece | Inntensol Innovative Energy Technical Solutions | Greek Soldier 85 & Nicosia 21, 26441 Patras | +30 2610 424680 | inntensol.gr | | |
| 11823 | Greece | Intelligent Engineering | Αρβανίτη 8, 58100, Γιαννιτσά | +30 23820 25345 | www.michanikoi.gr | | |
| 11824 | Greece | Iris Hellas | 40 Dodekanisou, 56728, Thessaloniki | +30 2310 809414 | https://www.irishellas.com | | REC Group, SolarWorld Industries GmbH, Hanwha Q CELLS GmbH, Aleo Solar GmbH, SunPower Corp., Yingli Green Energy Holding Co., Ltd., LDK Solar Co., Ltd., JA Solar Holdings Co., Ltd., Kyocera Corporation, Suntech Power Co., Ltd., Trina Solar Limited, Solar |
| 11825 | Greece | Iron Construction SA | Γραβιάς 17, Αγ. Παρασκευή 153 42 | +30 210 6852631 | https://heronsa.gr | | |
| 11826 | Greece | ISPS Group | Innovative Solar Power Solutions, Arkadiou 7, 15341 | +30 210 8068853 | www.isps.gr | | |
| 11827 | Greece | Istos Renewables Ltd | 8 Evageliou Street, Markopoulo, Attiki 19 003 | +30 22990 24064 | www.istos-lab.gr | | |
| 11828 | Greece | ITA - International Technological Applications S.A. | A. Papandreou 150, Glyfada, 165 61 | +30 210 9652031 | ita-sa.gr | | |
| 11829 | Greece | K. Gerasimidis - B. Kotsalos | Isocrates 10, Veria, 59100 | +30 23310 72619 | www.novart-veria.gr | | |
| 11830 | Greece | Kadoglou & Sons | Seraphim Tsakmani, 10, Lagkadas | +30 23940 26001 | www.kadoglou.gr | SMA Solar Technology AG, Siemens Energy, ABB Italy S.p.A., Schneider Electric SA | |
| 11831 | Greece | KAOL Energy | 5th km National Road Zakynthos-Keri, Ampelokipi Zakynthos | +30 26950 37222 | www.kaolenergy.com | | REC Group, Trina Solar Limited, Panasonic Corporation (Sanyo), LG Electronics, Inc., Alfa Solar Energy Inc. |
| 11832 | Greece | Kapazoglou Technical Office | Vouri 6, Athina 115 24 | +30 210 6914386 | www.kaptech.gr | | |
| 11833 | Greece | Kavallis | Kalavryta 6, Ilioupoli, 163 46 | +30 210 9734227 | www.kavallis.com | | |
| 11834 | Greece | Kontoulas Electrical Constructions | Av. Athens， Chalkis 88, Avlona, Attica | +30 22 95041316 | www.kontoulas.gr | | |
| 11835 | Greece | Kiefer Tek Ltd. | Naxou 12, Chalandri 15235, Attica | +30 210 6095775 | kiefer.gr | Schneider Electric SA | |
| 11836 | Greece | Kirilis Alexios | Palama 15, Agrinio 30100 | +30 264 1039378 | www.alexiskirilis.gr | | |
| 11837 | Greece | Klimamichaniki SA | El. 5 (Extension Andrianoupoleos), 551 33 Thessalonik | +30 2310 440844 | https://www.klimamichaniki.gr | | |
| 11838 | Greece | Klimatherm | Α. ΠΑΠΑΝΔΡΕΟΥ 9, ΜΕΛΙΣΣΙΑ ΑΤΤΙΚΗΣ, ΤΚ 15127 | +30 210 9406700 | www.klimatherm.gr | SMA Solar Technology AG, Phocos AG, ABB Italy S.p.A., Kostal Solar Electric GmbH, SolarEdge Technologies, Ltd. | |
| 11839 | Greece | I. Kontaratos & Co. EE - Ι.Ε.Π.Υ.Α. | Argasari 4, Zante, 29100 | +30 2695024262 | www.kontaratos.gr | | |
| 11840 | Greece | Kon. Bros. Korda OE | Vasileos Konstantinou 46, PC 25100, Aigio | +30 2691023063 | www.e-kordas.gr | | |
| 11841 | Greece | Koubarakis | Petrou Ralli 231, Nikea 184 50 | +30 210 4932115 | www.koubarakis.gr | | |
| 11842 | Greece | Kragiopoulos Group | Ενιππέως 6, Κατερίνη, Πιερία 60100 | +30 23515 01404 | www.kragiopoulos.gr | Kostal Solar Electric GmbH | Solare Datensysteme GmbH (Solar-Log) |
| 11843 | Greece | Kritiki Energiaki SA | 6th km E.O. Chania - Rethymno, 73200 Tsikalaria Souda | +30 2821 023675 | www.cretan-energy.gr | SMA Solar Technology AG, Kostal Solar Electric GmbH | |
| 11844 | Greece | Liakos Consulting & Construction | Iraklitou 1, 50132, Kozani | +30 2461 041730 | www.liakosmelkat.gr | Yingli Green Energy Holding Co., Ltd., Panasonic Corporation (Sanyo), ReneSola Ltd., Bosch (XiaMen) New Energy Ltd. | SMA Solar Technology AG, Kostal Solar Electric GmbH, SolarEdge Technologies, Ltd. |
| 11845 | Greece | M-energy | Extension Papagou 18, Regional Thessaloniki | +30 2310 543266 | www.m-energy.gr | | |
| 11846 | Greece | MainTech | Gianitson 90, 54627 Thessaloniki | +30 21028 13379 | https://www.maintech.gr | | |
| 11847 | Greece | Maitherm Pangalos | An. Makrí 5, Dráma 66133 | +30 25210 32303 | www.maintherm.gr | SolarMax Sales and Service GmbH, SMA Solar Technology AG, Kostal Solar Electric GmbH, SolarEdge Technologies, Ltd. | |
| 11848 | Greece | Mavrou Bros L.T.D. | 61 Ifigenias str., N.Ionia - Αthens, P.C. 14231 | +30 2102 714029 | www.mavrouafoi.gr | | |
| 11849 | Greece | MECHA Engineering | Sarantaporou 65, Chalandri, PC 15232 | +30 211 2260761 | www.mecha.gr | | |
| 11850 | Greece | Mechanical Solutions | Κ.Karamanli . 51, Agios Nikolaos, 72100 | +30 28410 23150 | www.mechanicalsolutions.gr | Sunset Energietechnik GmbH | SMA Solar Technology AG, Fronius International GmbH |