Company lists · Data refreshed September 2026

Top 25 Renewable energy system integrators based in Norway

RevenueBase identified 101 renewable energy system integrators headquartered in Norway as of September 2026 and tracks 2,961 professional contacts across them, including 1,110 with verified work emails. Oslo is the largest hub.

This list covers renewable energy system integrators 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 17, 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 17, 2026 86% judged on-target in blind review
101Companies
2,961Contacts tracked
1,110Verified emails
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The 25 largest renewable energy system integrators based in Norway

Ranked by team size
Top 25 of 101 renewable energy system integrators based in Norway, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy system integrators: 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
1Indirect evidenceOslo, NorwayHQ checked Sep 17, 20261,001-5,0001,150 contacts →

Indirect evidence

“GK er en ledende teknisk entreprenør og servicepartner.”

Source: RevenueBase Database · checked Sep 17, 2026
2Strong evidenceFornebu, NorwayHQ checked Sep 17, 2026201-500316 contacts →

Strong evidence

“Mainstream Renewable Power is a pure-play renewable energy company, with wind and solar assets across global markets, including Latin America, Africa, and Asia-Pacific.”

Source: RevenueBase Database · checked Sep 17, 2026
3Partial evidenceOslo, NorwayHQ checked Sep 17, 2026201-500289 contacts →

Partial evidence

“Otovo is an AI-Native home and business energy services company with a primary focus on solar power.”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceSteinkjer, NorwayHQ checked Sep 17, 2026201-500283 contacts →

Indirect evidence

“NTE er et trøndersk eid fornybarselskap som har fokus på kundenes framtidige behov.”

Source: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceTelemark, NorwayHQ checked Sep 17, 202651-20091 contacts →

Indirect evidence

“All your data in one place.”

Source: RevenueBase Database · checked Sep 17, 2026
6Strong evidenceOslo, NorwayHQ checked Sep 17, 202651-20086 contacts →

Strong evidence

“At Hydro Rein, we're leading the race to decarbonize industry, delivering renewable energy solutions tailored to the demands of energy-intensive processes.”

Source: RevenueBase Database · checked Sep 17, 2026
7Partial evidenceOslo, NorwayHQ checked Sep 17, 202651-20079 contacts →

Partial evidence

“Specialists in thermal energy.”

Source: RevenueBase Database · checked Sep 17, 2026
8Indirect evidenceLysaker, NorwayHQ checked Sep 17, 202651-20068 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
9Strong evidenceStord, NorwayHQ checked Sep 17, 202651-20036 contacts →

Strong evidence

“Alltec: Pioneering Sustainable Energy Solutions with Innovation and Expertise At Alltec, we're committed to empowering the renewable energy transition through high-quality…”

Source: RevenueBase Database · checked Sep 17, 2026
10Partial evidenceOslo, NorwayHQ checked Sep 17, 202611-5033 contacts →

Partial evidence

“For over two decades, Ecohz has pioneered the world of renewable electricity.”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceVåle, NorwayHQ checked Sep 17, 202651-20032 contacts →

Indirect evidence

“ALT Installasjon - vårt valg av navn er ingen tilfeldighet.”

Source: RevenueBase Database · checked Sep 17, 2026
12Indirect evidenceStraume, NorwayHQ checked Sep 17, 202611-5027 contacts →

Indirect evidence

“Solcellekraft er en totalleverandør av komplette solcelleanlegg.”

Source: RevenueBase Database · checked Sep 17, 2026
13Partial evidenceOslo, NorwayHQ checked Sep 17, 202611-5025 contacts →

Partial evidence

“Carbon Circle is a project development and EPC house addressing the increasing demand for carbon reduction and energy transition solutions globally.”

Source: RevenueBase Database · checked Sep 17, 2026
14Partial evidenceOslo, NorwayHQ checked Sep 17, 202611-5021 contacts →

Partial evidence

“Driving the energy transition in commercial real estate by making solar energy and storage the obvious choice.”

Source: RevenueBase Database · checked Sep 17, 2026
15Indirect evidenceLysaker, NorwayHQ checked Sep 17, 2026n/a16 contacts →

Indirect evidence

“Windstaller Alliance is combining the expertise of three offshore industry leaders to deliver an integrated and highly flexible offering of products, fabrication services, subsea…”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceTønsberg, NorwayHQ checked Sep 17, 202611-5013 contacts →

Partial evidence

“Vi leverer hele energisystemet!”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceStavanger, NorwayHQ checked Sep 17, 202611-5013 contacts →

Indirect evidence

“Engineering with a focus on the green path.”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceKristiansand, NorwayHQ checked Sep 17, 202651-20011 contacts →

Indirect evidence

“Frontica Engineering has merged with Aker Solutions.”

Source: RevenueBase Database · checked Sep 17, 2026
19Strong evidenceLarvik, NorwayHQ checked Sep 17, 202611-5011 contacts →

Strong evidence

“Isola Solar specializes in integrated solar panels for roofs and walls as well as a comprehensive solar cell system for flat roofs, and is Isola's investment in solar energy.”

Source: RevenueBase Database · checked Sep 17, 2026
20Partial evidenceFredrikstad, NorwayHQ checked Sep 17, 202611-5010 contacts →

Partial evidence

“I Smart Energi jobber vi hver dag for at strøm skal være enkelt for deg som er kunde hos oss.”

Source: RevenueBase Database · checked Sep 17, 2026
21Partial evidenceSkjetten, NorwayHQ checked Sep 17, 202611-509 contacts →

Partial evidence

“Nordisk Energikontroll er totalentreprenør innen fornybar varme- og kjøling.”

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidencePorsgrunn, NorwayHQ checked Sep 17, 20261-109 contacts →

Indirect evidence

“Norhybrid is a Norwegian company that designs and manufactures smart wind turbines with a low visual and environmental footprint and integrates them with solar panels.”

Source: RevenueBase Database · checked Sep 17, 2026
23Partial evidenceNorwayHQ checked Sep 17, 2026201-5009 contacts →

Partial evidence

“Vi tilbyr gjennomtenkte og fremtidsrettede smarte løsninger innen energi og elektroinstallasjon.”

Source: RevenueBase Database · checked Sep 17, 2026
24Indirect evidenceFolldal, NorwayHQ checked Sep 17, 202611-508 contacts →

Indirect evidence

“Solenergi Norge AS leverer komplette, driftssikre og lønnsomme solcelleanlegg for landbruk, næring og industri.”

Source: RevenueBase Database · checked Sep 17, 2026
25Strong evidenceKristiansand, NorwayHQ checked Sep 17, 20261-108 contacts →

Strong evidence

“Meventus is a renewable energy consultant and service company with offices in Norway and Sweden delivering services spanning the entire wind power project life cycle to customers…”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 101 renewable energy system integrators based in Norway

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Renewable energy system integrators based in Norway at a glance

As of Sep 17, 2026
37.5%Verified-email coverage
29.3Average contacts per company
1-10Median size (employees)
18.8%Largest-city concentration · Oslo
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
54
11-50
31
51-200
9
201-500
5
1,001-5,000
1
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 101 companies.

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 renewable energy system integrators, 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 “renewable energy system integrators”. 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 renewable energy system integrators), 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 renewable energy system integrators, 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, 1,110 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 17, 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.

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 renewable energy system integrators, 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 renewable energy system integrators are there based in Norway?

RevenueBase identified 101 renewable energy system integrators 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?

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

Which city has the most renewable energy system integrators?

Oslo leads with 19 headquartered companies, followed by Stavanger (9) and Kristiansand (5).

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 1,110 verified decision-maker contacts tracked across these 101 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 17, 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.