| 3751 | Belgium | Decancq Group | Prins Albertlaan 96, 8870 Izegem | +32 51 308320 | www.decancq.be | | |
| 3752 | Belgium | Decat | Pervijzestraat 17, 8600 Pervijze | +32 51 555001 | www.decat.be | | |
| 3753 | Belgium | DEDA Projects | Iepersteenweg 54, 8650 Merkem | +32 495 426705 | www.dedaprojects.be | | |
| 3754 | Belgium | Delbrassine S.A. | Z.I. avenue A. Ernst, 9, B-4800 Petit-Rechain | +32 87 307676 | www.delbrassine.be | | |
| 3755 | Belgium | Deliso Sprl | Zoning des Plénesses, rue des Nouvelles Technologies, 3, B-4820 Dison | +32 87 681065 | www.deliso.be | SMA Solar Technology AG | |
| 3756 | Belgium | Delnate & Fils | Rue du Petit Pont 79, 7700 Mouscron | +32 5633 7252 | www.chauffage-delnatte.be | | |
| 3757 | Belgium | Delta Luminance Sprl | Chaussée de Mons 447, 7810, Maffle | +32 68 287409 | www.deltaluminance.be | | |
| 3758 | Belgium | Demtec Services | Diepenbekerweg 11, 3500 Hasselt | +32 11 260367 | www.demtecservices.be | | |
| 3759 | Belgium | Denolf Electro and Solar | Aspergemstraat 30, 8750 Zwevezele | +32 51 613909 | www.delecsol.be | | |
| 3760 | Belgium | Derbigum | Bergensesteenweg 32, B-1651, LOT, Brussels | +32 2 3348700 | www.derbigum.be | | |
| 3761 | Belgium | Derouck Elektro | Koning Albertstraat 26, 2547 Lint | +32 478 831088 | www.derouckelektro.be | | |
| 3762 | Belgium | Derycke & Zonen | Legen Heirweg 20, 9890 Gavere | +32 9 3842364 | www.derycke-zonen.be | SMA Solar Technology AG, Fronius International GmbH, KACO New Energy GmbH, Enphase Energy, Inc., Delta Energy Systems (Germany) GmbH, SolarEdge Technologies, Ltd. | |
| 3763 | Belgium | Desmyter Electro en Installatie Bvba | Koekelarestraat 26, 8600 Diksmuide | +32 51 581008 | www.electro-installatie.be | BISOL Group, d.o.o., Panasonic Corporation (Sanyo), LG Electronics, Inc. | SMA Solar Technology AG, Huawei Technologies Co., Ltd. |
| 3764 | Belgium | DGS Solar | Villadreef 7, 3128 Baal | +32 800 99786 | www.dgs-solar.be | | |
| 3765 | Belgium | Di Palma Sprl | Rue des Goutteaux 124C, 6032 Mont sur Marchienne | +32 71 474225 | www.dipalma.be | | |
| 3766 | Belgium | DM Solar BVBA | Mellestraat 56, 8501 Heule | +32 56 890091 | www.dmsolar.be | | |
| 3767 | Belgium | DM Solutions gcv | Doelstraat 118, 8770 Ingelmunster | +32 498 100483 | www.dm-solutions.be | | |
| 3768 | Belgium | DNB Projects | Speckaertstraat 18, 9340 Lede | +32 473 916689 | www.dnb-projects.be | | |
| 3769 | Belgium | Dominique Jaumotte | Rue du Buisson, 170, B-6717, Attert | +32 473 263793 | www.jaumottedominique.be | | |
| 3770 | Belgium | DomoTecno | Sint Truidense Steenweg 340 - 3300 Tienen | +32 496 426317 | www.domotecno.be | | |
| 3771 | Belgium | Domus | Rue des Lapins 4, 1370 Jodoigne | +32 10 812054 | www.domus.be | | |
| 3772 | Belgium | Doumen & Kellens Bvba | Gribbenstraat 12, 3665 As | +32 496 298874 | https://www.dkdomotica.be | | |
| 3773 | Belgium | DP Projects | Terbermenweg 110, 3540 Herk-De-Stad | +32 496 501907 | www.dpprojects.be | | |
| 3774 | Belgium | DPS-Technics | Langemunt 163, 9420 Aaigem | +32 493 633111 | www.dps-technics.be | | |
| 3775 | Belgium | Duonooduitgang | Hulshoutsesteenweg 17, 2260, Westerlo | +32 478 786811 | www.duonooduitgang.be | | |
| 3776 | Belgium | Durasun | Schippersstraat 5, 3945 Ham | +32 13 444353 | www.durasun.be | REC Group, Atersa Grupo, SolarWorld Industries GmbH, BISOL Group, d.o.o., JA Solar Holdings Co., Ltd., Suntech Power Co., Ltd., Trina Solar Limited, Solar Frontier K.K., Canadian Solar Inc., Panasonic Corporation (Sanyo), Sunrise Energy Co., Ltd., Astrone | SMA Solar Technology AG, SolarEdge Technologies, Ltd., GoodWe Power Supply Technology Co., Ltd., Ginlong Technologies Co., Ltd |
| 3777 | Belgium | Durital Thierry Talbot | Rue des Alisiers 64, B-6940 Barvaux-sur-Ourthe | +32 497 702133 | www.barvaux-toitures.be | | |
| 3778 | Belgium | DakWerken Feys | Desselgemseweg 147 - 8790 Waregem | +32 472 743546 | www.dw-f.be | | |
| 3779 | Belgium | E-advies BVBA | Sasstraat 36, 9050 Gentbrugge | +32 9 3244250 | www.e-advies.org | | |
| 3780 | Belgium | E-Cocoon SPRL | Rue du Bilot 32, 1460 Ittre | +32 496 692710 | www.e-cocoon.be | | |