Company lists · Data refreshed September 2026

Top 25 Renewable energy consultancies based in Norway

RevenueBase identified 95 renewable energy consultancies headquartered in Norway as of September 2026 and tracks 830 professional contacts across them, including 360 with verified work emails. Oslo is the largest hub.

This list covers renewable energy consultancies 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 21, 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 21, 2026 86% judged on-target in blind review
95Companies
830Contacts tracked
360Verified emails
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The 25 largest renewable energy consultancies based in Norway

Ranked by team size
Top 25 of 95 renewable energy consultancies based in Norway, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy consultancies: 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
1Strong evidenceOslo, NorwayHQ checked Sep 21, 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 21, 2026
2Partial evidenceOslo, NorwayHQ checked Sep 21, 202651-20079 contacts →

Partial evidence

“Specialists in thermal energy.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceTrondheim, NorwayHQ checked Sep 21, 202651-20051 contacts →

Partial evidence

“Entro is an energy- and environmental consultancy firm with two clients – our customers and the environment.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceOslo, NorwayHQ checked Sep 21, 202651-20047 contacts →

Indirect evidence

“THEMA is committed to working with our clients to create a more efficient and sustainable society.”

Source: RevenueBase Database · checked Sep 21, 2026
5Strong evidenceStord, NorwayHQ checked Sep 21, 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 21, 2026
6Partial evidenceOslo, NorwayHQ checked Sep 21, 202611-5033 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceOslo, NorwayHQ checked Sep 21, 2026n/a31 contacts →

Indirect evidence

“Fra nyttår ble Erichsen & Horgen en del av Multiconsult.”

Source: RevenueBase Database · checked Sep 21, 2026
8Strong evidenceDale, NorwayHQ checked Sep 21, 202611-5030 contacts →

Strong evidence

“Hywer supplies a wide range of services in the renewable energy industry, ranging from- Engineering, Procurement and Construction (EPC-contracts) delivering complete hydropower…”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceBergen, NorwayHQ checked Sep 21, 202611-5026 contacts →

Indirect evidence

“WHO are we?”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceOslo, NorwayHQ checked Sep 21, 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 21, 2026
11Partial evidenceLysaker, NorwayHQ checked Sep 21, 202611-5022 contacts →

Partial evidence

“EvoTek tilbyr rådgivingstjenester innenfor energirådgivning, byggherretjenester og tverrfaglig teknisk rådgivning.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceOslo, NorwayHQ checked Sep 21, 202611-5021 contacts →

Indirect evidence

“Accelerating Sustainable Evolution – Join Us on Our Journey!”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceLillestrøm, NorwayHQ checked Sep 21, 202611-5021 contacts →

Partial evidence

“Kjeller Vindteknikk has more than 20 years of experience working with wind energy and is one of the leading consultancy companies in wind power and wind engineering in the Nordics.”

Source: RevenueBase Database · checked Sep 21, 2026
14Strong evidenceFredrikstad, NorwayHQ checked Sep 21, 202611-5017 contacts →

Strong evidence

“We help companies around the world buy renewable energy certificates that prove their energy really comes from clean sources.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceÅlesund, NorwayHQ checked Sep 21, 202611-5014 contacts →

Partial evidence

“Riksheim er en rådgivningsbedrift som tilbyr ingeniørtjenester innenfor miljø og energiløsninger.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceOslo, NorwayHQ checked Sep 21, 20261-1012 contacts →

Indirect evidence

“BERGFALD Miljørådgivere rydder forurensing og bidrar til grønn omstilling.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceEidsvoll, NorwayHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

“Erithy is a team of passionate problem-solvers dedicated to empower the future of energy.”

Source: RevenueBase Database · checked Sep 21, 2026
18Strong evidenceKristiansand, NorwayHQ checked Sep 21, 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 21, 2026
19Indirect evidenceOslo, NorwayHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“Eco Corporate is a partner-run consultancy within business advisory and transaction (M&A) services.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceHønefoss, NorwayHQ checked Sep 21, 20261-106 contacts →

Partial evidence

“Vi skaper fremtidens energiløsninger Elektroutvikling består av et fagmiljø som kombinerer solid praktisk erfaring og teknisk innsikt, med et klart blikk for hvor kraftbransjen er…”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceÅlesund, NorwayHQ checked Sep 21, 20261-104 contacts →

Partial evidence

Energiråd AS er et tverrfaglig rådgivningsfirma med spisskompetanse innen bærekraft.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceMolde, NorwayHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“Solid Rådgivning AS har ansatte med solid erfaring fra prosjektadministrative tjenester fra både entreprenør- og byggherresiden.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceNesbru, NorwayHQ checked Sep 21, 202611-504 contacts →

Partial evidence

“hva som gjør et elektrikerfirma som Grønn Strøm AS spesielt- Fokus på fornybar energi: spesialisert på solcelleanlegg, og andre energieffektive løsninger- Bærekraft i praksis…”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceOslo, NorwayHQ checked Sep 21, 202611-504 contacts →

Partial evidence

“Æge Group is a consultancy within the renewables and electrical infrastructure industries.”

Source: RevenueBase Database · checked Sep 21, 2026
25Strong evidenceHvalstad, NorwayHQ checked Sep 21, 20261-104 contacts →

Strong evidence

“GEIA was created to provide project development requirements in renewable energy for companies that either have or wish to establish their operations in southeast Europe.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 95 renewable energy consultancies based in Norway

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Renewable energy consultancies based in Norway at a glance

As of Sep 21, 2026
43.4%Verified-email coverage
8.7Average contacts per company
1-10Median size (employees)
31.6%Largest-city concentration · Oslo
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
67
11-50
19
51-200
7
201-500
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 95 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 consultancies, 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 consultancies”. 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 consultancies), 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 consultancies, 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, 360 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 21, 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.

Renewable energy consultancies by metro

  • Renewable energy consultancies in Oslo30

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 consultancies, 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 consultancies are there based in Norway?

RevenueBase identified 95 renewable energy consultancies 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?

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

Which city has the most renewable energy consultancies?

Oslo leads with 30 headquartered companies, followed by Trondheim (6) and Bergen (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 360 verified decision-maker contacts tracked across these 95 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 21, 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.