Industry code 43.21 · Oslo
Electrical installation in Oslo
There are 526 active companies in electrical installation in Oslo. 37 of them were registered in the last 12 months. Together they have 10,869 registered employees. The largest company is Bravida Norge AS with 3,375 employees. The oldest, S B Pettersen Elektro AS, was founded in 1914. 75% are limited companies.
- Active companies
- 526
- New in the last 12 months
- 37
- Registered employees
- 10,869
- Share of limited companies
- 75 %
The largest companies in electrical installation in Oslo
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Bravida Norge AS | 987582561 | 3,375 | NOK 5.7 bn | 2004 |
| 2 | Caverion Norge AS | 959069743 | 1,821 | NOK 3.8 bn | 1990 |
| 3 | Oneco Elektro AS | 996669173 | 622 | NOK 2 bn | 2011 |
| 4 | Oneco Networks AS | 987210001 | 565 | NOK 1.4 bn | 2004 |
| 5 | Lysteknikk Elektroentreprenør AS | 995971135 | 162 | NOK 330.4 m | 2010 |
| 6 | Datek Installasjon AS | 916110529 | 143 | NOK 174.4 m | 2015 |
| 7 | Teira Norway AS | 935916968 | 124 | – | 2025 |
| 8 | Eltera AS | 811600792 | 119 | NOK 247 m | 2013 |
| 9 | Assemblin Caverion Norge AS | 943623341 | 118 | – | 1987 |
| 10 | Elektro-Kontakten AS | 923685464 | 111 | NOK 178.5 m | 2019 |
| 11 | Boligelektrikeren AS | 996446972 | 105 | NOK 155 m | 2011 |
| 12 | Rett Elektro AS | 820292642 | 103 | NOK 126 m | 2018 |
| 13 | Hancom AS | 999301789 | 103 | – | 2012 |
| 14 | Eda Elektro Data Oslo AS | 929512952 | 94 | NOK 161.6 m | 1981 |
| 15 | Hgn Elektro AS | 919253185 | 88 | NOK 211.4 m | 2017 |
| 16 | Torshov Elektro AS | 898320812 | 86 | NOK 177.4 m | 2012 |
| 17 | Datelco AS | 968366076 | 83 | NOK 145.6 m | 1993 |
| 18 | Elektriker Gruppen AS | 879899222 | 81 | NOK 126.3 m | 1998 |
| 19 | Smart Elektro AS | 915204007 | 78 | NOK 102.7 m | 2015 |
| 20 | Storm Elektro Oslo-Akershus AS | 885204392 | 71 | NOK 118.3 m | 2002 |
| 21 | De Elektro AS | 989119621 | 64 | NOK 110.7 m | 2005 |
| 22 | Proff Elektriker AS | 912575721 | 61 | NOK 87.4 m | 2013 |
| 23 | Lys Og Varme AS | 977356067 | 60 | NOK 158.4 m | 1997 |
| 24 | Hauge Elektro AS | 943914559 | 59 | NOK 130 m | 1987 |
| 25 | North Installasjon AS | 815144902 | 54 | NOK 20.8 m | 2015 |
Newest companies in electrical installation in Oslo
- Nye El-Installasjon AS28 Oct 2026
- Elektro Lars AS11 Sept 2026
- Lunden Elektro AS9 Sept 2026
- Zap Elektro AS9 Sept 2026
- Eiklid & Ekdahl Elektro AS8 Sept 2026
- Zamour Ifar Elektro1 Sept 2026
- Sikker Jernbane Holding AS27 Aug 2026
- Elektriker I Oslo AS17 Aug 2026
- Halvorsen Elektro15 Jul 2026
- By Elektro & Energi1 Jun 2026
Frequently asked questions
How many companies in electrical installation are there in Oslo?
The Register of Legal Entities lists 526 active companies in electrical installation in Oslo. 37 of them were registered in the last 12 months.
Which is the largest company in electrical installation in Oslo?
Bravida Norge AS is the largest by number of employees, with 3,375 employees. The organisation number is 987582561.
How many people work in electrical installation in Oslo?
The companies have 10,869 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 25 of the 25 largest companies have reported employees.
How long have there been companies in electrical installation in Oslo?
The oldest active company, S B Pettersen Elektro AS, was founded in 1914. 75% of the companies are limited companies.
Other industries in the same group in Oslo
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.21. Figures are updated continuously.