Company lists · Data refreshed September 2026

Top 25 Electrical infrastructure consulting firms based in Norway

RevenueBase identified 455 electrical infrastructure consulting firms headquartered in Norway as of September 2026 and tracks 7,678 professional contacts across them, including 3,138 with verified work emails and 183 with mobile numbers. Oslo is the largest hub.

This list covers electrical infrastructure consulting firms headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
455Companies
7,678Contacts tracked
3,138Verified emails
183Mobile numbers
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The 25 largest electrical infrastructure consulting firms based in Norway

Ranked by team size
Top 25 of 455 electrical infrastructure consulting firms based in Norway, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to electrical infrastructure consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceOslo, NorwayHQ checked Sep 29, 20261,001-5,0002,553 contacts →

Partial evidence

“Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceOslo, NorwayHQ checked Sep 29, 2026501-1,000363 contacts →

Indirect evidence

“Advansia tilbyr et bredt spekter av tjenester innen prosjektledelse, digitalisering, sikkerhet og strategisk rådgivning for å møte våre kunders behov for en helhetlig tilnærming -…”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceBremnes, NorwayHQ checked Sep 29, 2026201-500134 contacts →

Indirect evidence

“LOS Elektro er en totalleverandør av elektrotekniske tjenester til kunder innen maritime næringer, energisektoren og bygg- og anleggsbransjen.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceLysaker, NorwayHQ checked Sep 29, 2026201-500129 contacts →

Indirect evidence

“Nettpartner er en ledende entreprenør innen elektrisk infrastruktur.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceLysaker, NorwayHQ checked Sep 29, 202651-200125 contacts →

Partial evidence

“Consulting, design and engineering for offshore, coastal and civil construction.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceFroland, NorwayHQ checked Sep 29, 2026201-500125 contacts →

Indirect evidence

“Traftec er Norges ledende elektroentreprenør innen utvikling, drift og vedlikehold av elektroteknisk infrastruktur og belysning langs veier og i tunneler.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceGrimstad, NorwayHQ checked Sep 29, 20261,001-5,000121 contacts →

Partial evidence

“Founded by two visionaries in response to downsizing in the oil industry, Velox Electro Nordics began as a small electrical company with a shared commitment to excellence.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceSandeid, NorwayHQ checked Sep 29, 2026201-500110 contacts →

Indirect evidence

“Helgevold er den ledende totaltekniske elektroentreprenøren på Haugalandet, med over 340 dyktige ansatte og en moderne bilpark på 140 kjøretøy.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceStavanger, NorwayHQ checked Sep 29, 2026201-50096 contacts →

Indirect evidence

“Caera er en landsdekkende leverandør av fagpersonell innen elektriske fag til industrien på land og til havs.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceStavanger, NorwayHQ checked Sep 29, 202651-20082 contacts →

Strong evidence

“A technical turnkey contractor and service company in the fields of pipes, ventilation, telecom, automation, energy consulting, maritime electrical and electrical.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceDrammen, NorwayHQ checked Sep 29, 2026201-50077 contacts →

Indirect evidence

“Til næringseiendommer, industrielle og kommunale bygg, leverer vi elektriske installasjoner.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceOslo, NorwayHQ checked Sep 29, 2026201-50076 contacts →

Partial evidence

“Sønnico is a leading contractor in electrical installations and the power industry.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceHamar, NorwayHQ checked Sep 29, 2026201-50073 contacts →

Indirect evidence

“Laje er en entreprenør for bygging av infrastruktur innen fagområdene energi, telekommunikasjon og veilys/veiteknikk.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceOslo, NorwayHQ checked Sep 29, 202651-20073 contacts →

Indirect evidence

“Future Technology - Part of Rejlers AS was founded in February 2011 and is located in Oslo, Norway.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceLillestrøm, NorwayHQ checked Sep 29, 202651-20070 contacts →

Indirect evidence

“Coromatic sikrer tilgang til strømforsyning og datakommunikasjon for virksomhetskritiske anlegg.”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceLysaker, NorwayHQ checked Sep 29, 202651-20068 contacts →

Indirect evidence

“Lefdal Installasjon ble stiftet av elektroentreprenøren Klaus Lefdal i 1934.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceOslo, NorwayHQ checked Sep 29, 202651-20067 contacts →

Partial evidence

“Lysteknikk Elektroentreprenør AS is a leading Norwegian electrical contractor, specializing in the design, installation, and maintenance of advanced electrical systems for the B2B…”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceStavanger, NorwayHQ checked Sep 29, 202651-20061 contacts →

Indirect evidence

“Prosjektil er et rådgivende ingeniørselskap innen bygg og anlegg.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceStrindheim, NorwayHQ checked Sep 29, 2026201-50060 contacts →

Indirect evidence

“Vintervoll AS ble stiftet i Steinkjer i 1947 og er en av de ledende og største elektroentreprenørene i Midt-Norge.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceOslo, NorwayHQ checked Sep 29, 202651-20060 contacts →

Indirect evidence

“Malthe Winje is a Norwegian company, founded in 1922.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceStavanger, NorwayHQ checked Sep 29, 2026201-50055 contacts →

Indirect evidence

“Rønning Elektro er en av de største elektroentreprenørene i hele Rogaland.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceStavanger, NorwayHQ checked Sep 29, 202611-5054 contacts →

Partial evidence

“Unitech Power Systems is a leading consultancy and digital solutions provider within electrical power systems.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceSandvika, NorwayHQ checked Sep 29, 202651-20052 contacts →

Indirect evidence

“ViaNova er tre frittstående rådgivende ingeniørfirma med totalt 130 ansatte, som primært arbeider med samferdselsrelaterte oppgaver.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceLysaker, NorwayHQ checked Sep 29, 202611-5052 contacts →

Indirect evidence

“Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceÅlesund, NorwayHQ checked Sep 29, 202651-20047 contacts →

Partial evidence

“We deliver tailored electric solutions for maritime, land-based aquaculture, buildings and industry.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 455 electrical infrastructure consulting firms based in Norway

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Electrical infrastructure consulting firms based in Norway at a glance

As of Sep 29, 2026
40.9%Verified-email coverage
2.4%Mobile-number coverage
16.9Average contacts per company
1-10Median size (employees)
17.8%Largest-city concentration · Oslo
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
242
11-50
146
51-200
43
201-500
14
501-1,000
3
1,001-5,000
3
5,001-10,000
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

Company record updated

Median 95.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among electrical infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Norway whose own description of what they do matches “electrical infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names electrical infrastructure consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among electrical infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Norway are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 3,138 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Electrical infrastructure consulting firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names electrical infrastructure consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many electrical infrastructure consulting firms are there based in Norway?

RevenueBase identified 455 electrical infrastructure consulting firms headquartered in Norway as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Multiconsult, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most electrical infrastructure consulting firms?

Oslo leads with 81 headquartered companies, followed by Bergen (18) and Stavanger (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,138 verified decision-maker contacts tracked across these 455 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.