Industry code 43.2 · Troms
Electrical, plumbing and other construction installation activities in Harstad
There are 52 active companies in electrical, plumbing and other construction installation activities in Harstad. No new companies have been registered in the last 12 months. Together they have 218 registered employees. The largest company is Harstad Elektro AS with 73 employees. The oldest, Siwe Elektro AS, was founded in 1981. 77% are limited companies.
- Active companies
- 52
- New in the last 12 months
- 0
- Registered employees
- 218
- Share of limited companies
- 77 %
The largest companies in electrical, plumbing and other construction installation activities in Harstad
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 | Harstad Elektro AS | 950179597 | 73 | NOK 155.3 m | 1988 |
| 2 | Haneseth Harstad AS | 961144663 | 27 | NOK 29.4 m | 1991 |
| 3 | Elumni Elektro AS | 976550552 | 23 | NOK 63.2 m | 1996 |
| 4 | Volt Elektro Harstad AS | 986554343 | 23 | NOK 35.9 m | 2004 |
| 5 | Siwe Elektro AS | 930703419 | 15 | NOK 25 m | 1981 |
| 6 | Hitt Elektro AS | 926801449 | 13 | NOK 15.4 m | 2021 |
| 7 | Lbt Nord AS | 933926338 | 9 | NOK 19.2 m | 2024 |
| 8 | Comfort Harstad AS | 992985151 | 9 | NOK 17 m | 2008 |
| 9 | Volt Rør AS | 928873668 | 8 | NOK 10.2 m | 2022 |
| 10 | Aritech Harstad AS | 961227062 | 7 | NOK 11.4 m | 1991 |
| 11 | Kan Rør AS | 918537503 | 6 | NOK 14.3 m | 2016 |
| 12 | Aj Klima Ii AS | 936108504 | 5 | NOK 6.3 m | 2025 |
| 13 | Siwe Holding AS | 814335852 | – | NOK 0 | 2014 |
| 14 | Henriksen Montasje | 827594792 | – | – | – |
| 15 | Brannpro AS | 830182802 | – | NOK 1.3 m | 2022 |
| 16 | Vann & Varme Service V/ Jarl Samuelsen | 833535412 | – | – | – |
| 17 | Stunes Multiservice | 833778552 | – | – | – |
| 18 | Andersen Rør AS | 880099272 | – | NOK 2 m | 1998 |
| 19 | St-Klimaservice AS | 894502592 | – | – | 2009 |
| 20 | S. Bendixen | 911732289 | – | – | – |
| 21 | Aspaker Rør AS | 914737001 | – | NOK 3.2 m | 2014 |
| 22 | Isotec Harstad AS | 918895329 | – | NOK 3.1 m | 2017 |
| 23 | Tkm Holding AS | 921056966 | – | NOK 0 | 2018 |
| 24 | Elektroanlegg AS | 921630204 | – | NOK 1 m | 2018 |
| 25 | Grebstad Elektro | 922974195 | – | – | – |
Newest companies in electrical, plumbing and other construction installation activities in Harstad
- Aj Klima Ii AS5 Sept 2025
- Fjellvang AS13 Aug 2025
- Sør-Troms Elektro AS10 Jul 2025
- A. Jørgensen Invest AS29 Apr 2025
- Aggregatservice AS7 Oct 2024
- Lbt Nord AS15 Aug 2024
- Stunes Multiservice11 Jul 2024
- Vann & Varme Service V/ Jarl Samuelsen3 Jun 2024
- Eriksen Elektroservice AS24 May 2024
- El-Max AS13 Oct 2023
Frequently asked questions
How many companies in electrical, plumbing and other construction installation activities are there in Harstad?
The Register of Legal Entities lists 52 active companies in electrical, plumbing and other construction installation activities in Harstad. No new companies have been registered in the last 12 months.
Which is the largest company in electrical, plumbing and other construction installation activities in Harstad?
Harstad Elektro AS is the largest by number of employees, with 73 employees. The organisation number is 950179597.
How many people work in electrical, plumbing and other construction installation activities in Harstad?
The companies have 218 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 12 of the 25 largest companies have reported employees.
How long have there been companies in electrical, plumbing and other construction installation activities in Harstad?
The oldest active company, Siwe Elektro AS, was founded in 1981. 77% of the companies are limited companies.
Explore further
Electrical, plumbing and other construction installation activities in nearby municipalities
Other industries in the same group in Harstad
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.2. Figures are updated continuously.

