Company lists · Data refreshed October 2026

Top 17 Green energy system integrators based in Oslo, Norway

RevenueBase identified 26 company matches for green energy system integrators associated with Oslo, Norway as of October 2026 and tracks 1,800 professional contacts across them, including 631 with verified work emails. Across Norway, Oslo is the largest hub for this category.

This list covers company matches for green energy system integrators associated with Oslo, Norway, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 13, 2026 How this list was built
26Companies
1,800Contacts tracked
631Verified emails
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The 17 largest green energy system integrators based in Oslo, Norway

Ranked by team size
Top 17 of 26 company matches for green energy system integrators based in Oslo, Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOslo, NorwayHQ recorded Oct 13, 20261,001-5,0001,134 contacts →

Exact match

“GK er en ledende teknisk entreprenør og servicepartner.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2Exact matchOslo, NorwayHQ recorded Oct 13, 2026201-500274 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3Exact matchOslo, NorwayHQ recorded Oct 13, 202651-20082 contacts →

Exact match

“Specialists in thermal energy.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchOslo, NorwayHQ recorded Oct 13, 202651-20071 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5032 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5032 contacts →

Exact match

“At Proxll, we are specialists on development, implementation and operations of green technology.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5031 contacts →

Exact match

“Headquartered in Norway and founded in 2022, Vind AI develops an integrated digital platform that modernises how renewable energy projects are planned and evaluated.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5021 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5017 contacts →

Exact match

“The mission of FUSen is to provide Clean energy for everybody everywhere.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchOslo, NorwayHQ recorded Oct 13, 202611-5013 contacts →

Exact match

“DCP designs, installs and operates distributed renewable energy systems for critical community infrastructure including healthcare, education and humanitarian aid.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchOslo, NorwayHQ recorded Oct 13, 202651-20010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12Exact matchOslo, NorwayHQ recorded Oct 13, 202611-506 contacts →

Exact match

“MERELEKTRO AS is a company based out of Oslo, Oslo, Norway.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13Exact matchOslo, NorwayHQ recorded Oct 13, 20261-104 contacts →

Exact match

“A Norwegian Company, owned by operated by US and Norwegian investors, is an international developer and an integrator of commercial and industrial solar photovoltaic (PV) systems…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14Exact matchOslo, NorwayHQ recorded Oct 13, 20261-102 contacts →

Exact match

“Synergi Solkraft AS fokuserer utelukkende på solcelleanlegg på tak.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15Exact matchOslo, NorwayHQ recorded Oct 13, 20261-101 contacts →

Exact match

“PUR Energi AS fokuserer på effektive fornybare energiløsninger.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16Exact matchOslo, NorwayHQ recorded Oct 13, 20261-101 contacts →

Exact match

“Xrgia er et ledende konsulentmiljø innenfor fornybar energi og arbeider med spørsmål knyttet til det grønne skiftet.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17Exact matchOslo, NorwayHQ recorded Oct 13, 20261-101 contacts →

Exact match

“At Qubit Energy, we are developing QubitOS, an advanced energy operating system designed to serve as the digital backbone of the energy industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 17 of 26 green energy system integrators based in Oslo, Norway

See the full list, filter by size, metro and specialty, and access 631 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green energy system integrators based in Oslo, Norway at a glance

As of Oct 13, 2026
35.1%Verified-email coverage
69.2Average contacts per company
11-50Median size (employees)
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
11
11-50
10
51-200
3
201-500
1
1,001-5,000
1

Email recency for this list is measured across the whole Norway list rather than for Oslo, so it is reported there. Company counts and contact totals on this page are exact for Oslo, over 26 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Oslo, Norway whose business descriptions match “green energy system integrators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 631 professional contacts with verified work emails across the full matched dataset. 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 October 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “green energy system integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green energy system integrators are there based in Oslo, Norway?

RevenueBase identified 26 company matches for green energy system integrators associated with Oslo, Norway as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

GK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Norway has the most green energy system integrators?

Oslo leads Norway with 26 company records, followed by Stavanger (9) and Kristiansand (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 631 professional contacts with verified work emails tracked across these 26 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 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 SmartSearch, 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.