Electricity, gas, steam and air conditioning supply: the largest employers in Hainaut
As of 14 Nov 2026, 12 companies in Electricity, gas, steam and air conditioning supply (NACE 35) in Hainaut report employees in recent accounts (financial year 2025). The 10 largest employers account for 3,211.1 FTE, out of 3,220.2 for all of them; median headcount is 12.6 FTE. Operateur de Reseaux d'Energies leads with 3,000 FTE (financial year 2025).
Top 12 · Electricity, gas, steam and air conditioning supply · Hainaut
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 | Operateur de Reseaux d'Energies 6041 Charleroi | €2.83bn | €920.9m | 461,806 € | 3,000.0 | 2025 |
| 2 | Association Intercommunale d'Electricité du Sud du Hainaut 6470 Sivry-Rance | €80.3m | €21.3m | €49.8m | 52.7 | 2025 |
| 3 | Arcade Energy 7090 Braine-le-Comte | 500,713 € | — | −119,170 € | 50.6 | 2025 |
| 4 | TotalEnergies - Centrale Electrique Marchienne-au-Pont 6030 Charleroi | €66.1m | €134.9m | €36.9m | 39.0 | 2025 |
| 5 | Ingelec 7700 Mouscron | €2.60m | — | €1.07m | 16.9 | 2025 |
| 6 | Districoal 6060 Charleroi | €4.44m | — | €2.44m | 13.1 | 2025 |
| 7 | Cinergie 6224 Fleurus | €22.8m | — | €10.3m | 12.1 | 2025 |
| 8 | Comptoir Citoyen des Energies 7900 Leuze-en-Hainaut | €8.00m | €30.8m | €3.07m | 10.9 | 2025 |
| 9 | D&B Green Solution 7120 Estinnes | €4.11m | — | €2.38m | 9.0 | 2025 |
| 10 | Cooperative pour les Energies du Futur 7900 Leuze-en-Hainaut | €10.1m | 277,927 € | €8.74m | 6.8 | 2025 |
| 11 | Snow Events International 7780 Comines-Warneton | €3.98m | €1.41m | −33,803 € | 5.3 | 2025 |
| 12 | Electricite - Automatisme - Informatique 6001 Charleroi | 278,693 € | — | 223,160 € | 3.8 | 2025 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Electricity, gas, steam and air conditioning supply across Belgium → All sectors · Hainaut →
Other sectors · Hainaut
- 01 Crop and animal production, hunting and related service activities202
- 02 Forestry and logging21
- 08 Other mining and quarrying15
- 10 Manufacture of food products290
- 11 Manufacture of beverages27
- 13 Manufacture of textiles38
- 14 Manufacture of wearing apparel10
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials46
- 17 Manufacture of paper and paper products19
- 18 Printing and reproduction of recorded media48
- 20 Manufacture of chemicals and chemical products68
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations17
- 22 Manufacture of rubber and plastic products50
- 23 Manufacture of other non-metallic mineral products103
- 24 Manufacture of basic metals37
- 25 Manufacture of fabricated metal products, except machinery and equipment271
- 26 Manufacture of computer, electronic and optical products14
- 27 Manufacture of electrical equipment18
- 28 Manufacture of machinery and equipment n.e.c.58
- 29 Manufacture of motor vehicles, trailers and semi-trailers13
- 31 Manufacture of furniture35
- 32 Other manufacturing49
- 33 Repair, maintenance and installation of machinery and equipment93
- 37 Sewerage11
- 38 Waste collection, recovery and disposal activities71
- 41 Construction of residential and non-residential buildings508
- 42 Civil engineering76
- 43 Specialised construction activities1,384
- 46 Wholesale trade913
- 47 Retail trade2,003
- 49 Land transport and transport via pipelines321
- 52 Warehousing, storage and support activities for transportation74
- 53 Postal and courier activities21
- 55 Accommodation77
- 56 Food and beverage service activities1,122
- 58 Publishing activities15
- 59 Motion picture, video and television programme production, sound recording and music publishing activities21
- 61 Telecommunication13
- 62 Computer programming, consultancy and related activities179
- 63 Computing infrastructure, data processing, hosting and other information service activities17
- 64 Financial service activities, except insurance and pension funding138
- 66 Activities auxiliary to financial services and insurance activities343
- 68 Real estate activities351
- 69 Legal and accounting activities522
- 70 Activities of head offices and management consultancy246
- 71 Architectural and engineering activities; technical testing and analysis186
- 72 Scientific research and development36
- 73 Activities of advertising, market research and public relations69
- 74 Other professional, scientific and technical activities29
- 75 Veterinary activities54
- 77 Rental and leasing activities44
- 78 Employment activities29
- 79 Travel agency, tour operator and other reservation service and related activities51
- 80 Investigation and security activities13
- 81 Services to buildings and landscape activities216
- 82 Office administrative, office support and other business support activities83
- 85 Education199
- 86 Human health activities559
- 87 Residential care activities269
- 88 Social work activities without accommodation130
- 90 Arts creation and performing arts activities41
- 91 Libraries, archives, museums and other cultural activities14
- 92 Gambling and betting activities12
- 93 Sports activities and amusement and recreation activities128
- 94 Activities of membership organisations60
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles153
- 96 Personal service activities265
Municipalities with the most companies in the sector · Hainaut
- 7500 Tournai (Ere, Saint-Maur)20
- 6220 Fleurus (Heppignies, Lambusart, Wangenies)15
- 7900 Leuze-en-Hainaut (Grandmetz)5
- 6000 Charleroi4
- 6142 Fontaine-l'Évêque (Leernes)4
- 7700 Mouscron (Luingne)4
- 7120 Estinnes (Croix-Lez-Rouveroy, Estinnes-Au-Mont, Estinnes-Au-Val, …)3
- 6001 Charleroi (Marcinelle)2
- 6041 Charleroi (Gosselies)2
- 6240 Farciennes (Pironchamps)2
- 6030 Charleroi (Goutroux, Marchienne-Au-Pont)1
- 6040 Charleroi (Jumet)1
Frequently asked questions
Which is the largest employer in Electricity, gas, steam and air conditioning supply in Hainaut?
Among companies, Operateur de Reseaux d'Energies, with 3,000 full-time equivalents reported (financial year 2025).
Are all the jobs located in the area?
Not necessarily: headcount is reported by the company for all its sites, and the company is ranked by the address of its registered office. 12 out of 78 companies in the sector report employees there.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
Analyse companies · Hainaut
Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.
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.