Het hoofdstuk Elektronische installaties betreft het geheel van leveranties en werkzaamheden nodig voor het in het werk brengen en bedrijfsgereed maken van installaties voor de opwekking, omzetting, distributie en afname van elektrische energie alsmede gemeenschappelijke leidingwegen, aardings- en bliksembeveiligingsvoorzieningen.
| Naam | Specialisatie | Plaats | 
|---|---|---|
| Datawatt B.V. | 51.00 52.00 57.00 68.00 70.00 75.00 70.00 | Steenwijk | 
| DATELEC NV | 77.10 77.20 77.30 77.40 77.50 70.00 70.00 70.11 70.12 70.13 70.16 70.20 70.35 70.41 70.52 70.54 70.55 70.61 70.62 70.64 70.65 70.72 70.73 70.74 70.75 70.78 70.81 70.82 70.83 70.84 70.87 75.00 75.10 75.11 75.12 75.15 75.16 75.20 75.32 75.33 75.37 75.41 75.42 75.43 75.44 75.45 75.46 75.51 75.52 75.53 75.62 75.65 75.71 75.72 75.73 75.81 75.82 75.a 78.00 91.00 42.22 | HOUTHALEN-HELCHTEREN | 
| Datro B.V. | 75.a 43.21 26.20 92.00 92.05 92.06 92.07 64.50 64.52 64.53 64.54 65.23 70.63 75.61 75.65 92.04 64 64.4 61.33 70.00 75.00 | Schiedam | 
| Dätwyler IT Infra GmbH | 26 70.63 64.4 | Hattersheim am Main | 
| Davaro Solar | 70.33 | Valkenswaard | 
| DAVID FRABEL SPRL | 70.00 70.00 43.21 | MORLANWELZ | 
| David Jacobs BVBA | 70.00 43.21 | Mechelen | 
| Daxateur | 33.33 33.72 30.43 33.37 33.36 70.33 43.91 30.44 33.34 33.35 33.38 33.54 33.55 33.62 33.87 | Schoonhoven | 
| DB Electro | 70.00 70.00 70.00 72.00 74.00 | AALST | 
| DB-Elek | 70.00 70.00 43.21 | TORHOUT | 
| DBI Installatietechniek B.V. | 70.00 70.00 43.21 | Oude-Tonge | 
| DBL Verlichting | 70.00 75.00 78.00 70.00 70.82 34 17.00 17.32 63 72.60 63.90 058 63.1 63.10 63.11 90.63 72.00 72.54 05.32 63.2 63.20 63.21 63.22 63.3 63.30 63.31 63.9 63.90 70.81 32.37 7 T7.74 9 T9.97 20 21 22 23 | Hengelo | 
| DBM Elektrotechniek B.V. | 70.00 70.51 70.13 70.26 | Alblasserdam | 
| DBO ELEKTRO-ENERGIE BVBA | 70.00 43.21 | Destelbergen | 
| DBS CONSULTING SPRL | 70.00 70.00 77.10 77.20 77.30 77.40 77.50 43.21 77.00 73.30 92.40 | HORION-HOZEMONT | 
| DBT Elektro | 70.00 77.10 77.20 77.30 77.40 77.50 43.21 | Turnhout | 
| DBT Energie B.V. | 90.00 91.00 70.00 70.51 70.61 70.71 70.73 70.31 70.38 70.74 70.72 70.52 | Benschop | 
| DC SECURITY BVBA | 70.00 70.00 43.21 77.00 | HULSHOUT | 
| DCE | 70.00 70.00 | GESVES | 
| DCE BVBA | 70.00 43.21 | Rekem | 
| DD - Technics | 70.00 77.10 77.20 77.30 77.40 77.50 43.21 77.00 | Oedelem | 
| DDB SERVICE BVBA | 70.00 43.21 | LICHTERVELDE | 
| DDFA B.V. - Zaanzon | 70.00 | Wormerveer | 
| De Applicateur | 00.BA 00.BIM 00.VC 01.06 02.c 05.34 10.16 21.16 21.20 21.85 21.86 21.86.a 21.81 22.00 22.16 22.85 23.85 23.82 26.81 30.13 30.16 31.21 31.28 31.31 31.82 32.16 34.16 36.00 36.30 36.40 37.26 45.41.a 45.16 45.25 45.81 46.32.a 52.38 55.38 56.38 60.38 60.81 61.33 61.38 61.41 61.51 61.81 61.82 61.00 62.32 62.00 62.38 62.81 62.82 70.11 75.52 22 | Veenendaal | 
| De Beij Elektra B.V. | 70.00 75.00 70.00 43.21 | De Kwakel |