Construction of utility projects for electricity and telecommunications: largest employers
364 Belgian companies in the sector (NACE 4222) report employees in recent accounts; here are the top 20. Spie Belgium leads with 1,375.4 FTE (financial year 2025).
Top 20
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Spie Belgium 1070 Anderlecht | €274.7m | €375.6m | €60.8m | 1,375.4 | 2025 |
| 2 | BESIX Unitec 2627 Schelle | €126.2m | €180.6m | €29.2m | 546.5 | 2025 |
| 3 | CAS-VOS 9100 Sint-Niklaas | €59.4m | €106.9m | €10.2m | 387.4 | 2025 |
| 4 | Mobix 2800 Mechelen | €64.2m | €50.3m | €32.8m | 275.6 | 2025 |
| 5 | Constructel Belgium 7033 Mons | €71.2m | €99.9m | €29.4m | 229.0 | 2025 |
| 6 | Fodetra-Hotton Infra 6180 Courcelles | €27.4m | €51.5m | €9.38m | 220.3 | 2025 |
| 7 | APK Infra West 3900 Pelt | €12.7m | €46.3m | €5.16m | 212.2 | 2025 |
| 8 | Tasöz 9160 Lokeren | €13.4m | €44.4m | €7.10m | 177.3 | 2025 |
| 9 | Mobix Engetec 7170 Manage | €22.8m | €25.8m | €1.57m | 162.5 | 2025 |
| 10 | BESIX Connect 9240 Zele | €17.8m | €32.0m | €13.2m | 146.3 | 2025 |
| 11 | MS-Infra 9140 Temse | €8.58m | €16.3m | €1.93m | 130.7 | 2025 |
| 12 | GKW 1740 Ternat | €24.1m | €38.2m | €7.92m | 116.8 | 2025 |
| 13 | Etablissements Jacobs SA 4340 Awans | €22.7m | €19.8m | €3.52m | 114.9 | 2024 |
| 14 | Roger Gehlen 4950 Waimes | €17.2m | €19.4m | €3.59m | 110.3 | 2025 |
| 15 | Enercon Services Belgium 8490 Jabbeke | €3.75m | €13.8m | 895,749 € | 108.7 | 2025 |
| 16 | Oude Marktvoerliedennatie 9120 Beveren-Kruibeke-Zwijndrecht | €23.8m | €44.6m | €16.2m | 105.1 | 2024 |
| 17 | Siemens Energy 1654 Beersel | €107.3m | €155.1m | €19.3m | 102.6 | 2025 |
| 18 | IGM 9160 Lokeren | €8.01m | €29.8m | €3.11m | 99.5 | 2025 |
| 19 | Circet Infratechniek 2900 Schoten | €54.8m | €44.8m | €18.9m | 99.4 | 2025 |
| 20 | T.R.T.C. - BONFOND Fils 4190 Ferrières | €13.2m | €24.2m | €3.10m | 92.1 | 2025 |
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
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Frequently asked questions
Who is the largest employer in Construction of utility projects for electricity and telecommunications?
Spie Belgium, with 1,375.4 full-time equivalents reported (financial year 2025).
How many Construction of utility projects for electricity and telecommunications companies report employees?
364 out of 928, in accounts less than 3 years old.
Analyse companies in Construction of utility projects for electricity and telecommunications
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 14 Nov 2026.