| 4201 | Belgium | VHJ Elektro | Ekelbeke 142, 9220 Hamme (Zogge) | +32 498 296354 | www.vhjelektriciteitswerken.be | | |
| 4202 | Belgium | Vicmar s.c.r.l. | Rue de fisine 7, 5590 Achêne | +32 83 215524 | www.vicmar.be | | |
| 4203 | Belgium | Vlaanderen Groen bvba | Kuipersstraat 49, 9308 Hofstade | +32 479 168620 | www.vlaanderengroen.be | SMA Solar Technology AG, Fronius International GmbH | |
| 4204 | Belgium | Voltaïque sprl | Zonnewegel, 12 1933 Sterrebeek | +32 498 311288 | www.voltaique.be | | |
| 4205 | Belgium | Volteco | Chaussée du Roeulx, 150, 7060, Soignies | +32 67 470009 | www.volt-eco.be | | |
| 4206 | Belgium | Vorsselmans nv | Wuustwezelseweg 95, 2990, Loenhout | +32 3 6900440 | www.vorsselmans.be | | |
| 4207 | Belgium | VP Power | Eikendreef 6, 2820 Bonheiden | +32 15 550680 | https://www.vpelektriciteit.be | | |
| 4208 | Belgium | VPRO Energy | Avenue Croix de Guerre 309, 1120 Bruxelles | +32 479 062352 | www.vpro-energy.be | SMA Solar Technology AG, Fronius International GmbH, Enphase Energy, Inc., SolarEdge Technologies, Ltd. | |
| 4209 | Belgium | Dakwerken W. De Wispelaere bvba | Robert Dansaertlaan 317, 1700, Dilbeek | +32 2 4633434 | https://www.wdewispelaere.be | | |
| 4210 | Belgium | Wachtelaer bvba | Désiré de Bodtkaai 25, 9400 Ninove | +32 54 332519 | www.wachtelaerbvba.be | | |
| 4211 | Belgium | Wase Zon bvba | Manta 16, Waasmunster, 9250 | +32 52 860054 | www.wasezon.be | SMA Solar Technology AG, Fronius International GmbH, Victron Energy BV, Huawei Technologies Co., Ltd. | |
| 4212 | Belgium | Wattsol | 95, Rue de l'Abbaye, 4040, Herstal | +32 4 2488353 | www.wattsol.be | Steca Elektronik GmbH | |
| 4213 | Belgium | Wattuneed Belgique | Rue Henripré 12, 4821 Andrimont | +32 87 450034 | www.wattuneed.com | | Heckert Solar GmbH, SolarWorld Industries GmbH, AU Optronics Corporation, LG Electronics, Inc. |
| 4214 | Belgium | Wida B.V.B.A | Grote Baan 101, 9120 Melsele | +32 475 534235 | www.wida.be | | |
| 4215 | Belgium | Wille Ronald bvba | Schouwingstraat 43A, B-9032 Wondelgem | +32 9 2271910 | www.willeronald.be | | |
| 4216 | Belgium | Willems Tecno NV | Leuvensesteenweg 157, B-3070 Kortenberg | +32 2 7596162 | www.willems-tecno.be | | |
| 4217 | Belgium | Wimtechniek bvba | Warme Hand Straat 32, 2280 Grobbendonk | +32 479 989840 | https://www.wimtechniek.be | | |
| 4218 | Belgium | Win Watt SA | A. Gossetlaan 42a, 1702, Groot-Bijgaarden | +32 2 5143398 | www.winwatt.be | SolarEdge Technologies, Ltd. | |
| 4219 | Belgium | S.P.R.L Winants | Rue des Ecoles, 116, 4830, Limbourg | +32 87 310350 | www.winants.be | | |
| 4220 | Belgium | Wiskon Tec Bvba | Eeksken 12, 9940 Evergem-Sleidinge | +32 479 430162 | www.wiskon.be | | |
| 4221 | Belgium | Wittendorp Bvba | Windmolenstraat 30, 3800 Sint-Truiden | +32 11 759780 | www.wittendorp.be | | |
| 4222 | Belgium | Wouters & Van Beyens | Oekensestraat 24, 8880 Ledegem | +32 474 250295 | https://www.woutersenvanbeyens.be | SMA Solar Technology AG | |
| 4223 | Belgium | Wall & Roof Construct | Textielstraat 3 W1, 9240 Zele | +32 3 7106120 | www.wr-c.be | | |
| 4224 | Belgium | WVR Energietechnieken | Limberg 135, 2230 Herselt | +32 494 859378 | www.wvrenergietechnieken.be | KIOTO Solar, Kyocera Corporation, Solar Frontier K.K., Mitsubishi Electric Corporation, LG Electronics, Inc. | Fronius International GmbH |
| 4225 | Belgium | Xavier Groenen SPRL | Rue des Semailles, 35, 4400 Flémalle | +32 497 243729 | www.groenenxavier.be | | |
| 4226 | Belgium | XL Solar Comfort House NV | Veldstraat 18, 3140 Keerbergen | +32 15 540010 | www.xl-solar.be | Aleo Solar GmbH | SMA Solar Technology AG |
| 4227 | Belgium | Younectro Bvba | Borgerhoutsestraat 85, 2140 Antwerpen | +32 3 2906908 | younectro.be | | |
| 4228 | Belgium | Yvelec Sprl | Rue Léopold Genicot 3, 5380 Noville-les-Bois (Fernelmont) | +32 81 512515 | https://www.electricite-tertiaire.be | | |
| 4229 | Belgium | Zonlicht | Heidestraat 35, B-2520 Emblem | +32 3 4886560 | www.zonlicht.net | | |
| 4230 | Belgium | Zonnepanelen Energie | | +32 666354447 | https://zonnepanelenenergie.be | | |