Company lists · Data refreshed September 2026

Top 25 Energy technology consulting firms based in Norway

RevenueBase identified 102 energy technology consulting firms headquartered in Norway as of September 2026 and tracks 2,137 professional contacts across them, including 951 with verified work emails. Oslo is the largest hub.

This list covers energy technology 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 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
102Companies
2,137Contacts tracked
951Verified emails
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The 25 largest energy technology consulting firms based in Norway

Ranked by team size
Top 25 of 102 energy technology consulting firms 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 energy technology 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
1Strong evidenceSandnes, NorwayHQ checked Sep 21, 2026501-1,000503 contacts →

Strong evidence

“Cegal is a global technology partner with deep domain expertise in the energy industry - built on 25 years of hands-on experience.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceStavanger, NorwayHQ checked Sep 21, 20261,001-5,000485 contacts →

Indirect evidence

“In 2023 Baker Hughes completed the acquisition of Altus Intervention.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceOslo, NorwayHQ checked Sep 21, 202651-20086 contacts →

Partial 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
4Partial evidenceOslo, NorwayHQ checked Sep 21, 202651-20079 contacts →

Partial evidence

“Specialists in thermal energy.”

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceOslo, NorwayHQ checked Sep 21, 202651-20073 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
6Partial 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
7Partial evidenceStord, NorwayHQ checked Sep 21, 202651-20036 contacts →

Partial 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
8Indirect evidenceOslo, NorwayHQ checked Sep 21, 202611-5033 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
9Strong evidenceStavanger, NorwayHQ checked Sep 21, 202611-5032 contacts →

Strong evidence

“Noova is a technology company enabling Scandinavian businesses to reduce energy consumption and increase profitability since 2005.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceHeim, NorwayHQ checked Sep 21, 202651-20028 contacts →

Partial evidence

“Sodvin AS har som mål å bidra til det grønne skiftet ved bruk av teknologi og fornybar energi og tilbyr tjenester innen energisparing, kundesystem og skytjenester.”

Source: RevenueBase Database · checked Sep 21, 2026
11Partial 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
12Partial evidenceVinterbro, NorwayHQ checked Sep 21, 202611-5025 contacts →

Partial evidence

“Fair Solution er eksperter innenfor energi.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceOslo, NorwayHQ checked Sep 21, 202651-20023 contacts →

Partial evidence

“Elkraft hjelper bedrifter med å redusere sine totale strømkostnader gjennom optimalisering av strøm, nettleie og energiforbruk.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial 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
15Indirect 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
16Indirect evidenceBergen, NorwayHQ checked Sep 21, 202611-5021 contacts →

Indirect evidence

“Jøsok er et uavhengig rådgivende konsulentselskap som ble etablert i 1974.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceStavanger, NorwayHQ checked Sep 21, 202611-5015 contacts →

Partial evidence

“Teknisk entreprenør med Miljø- og energi rådgivning.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceGrimstad, NorwayHQ checked Sep 21, 202611-5015 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
19Partial 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
20Strong evidenceSandnes, NorwayHQ checked Sep 21, 202611-5014 contacts →

Strong evidence

“Located in the heart of Norway's Oil Capital, we provide Technology Consulting Services to companies in the energy sector and more.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceTønsberg, NorwayHQ checked Sep 21, 202611-5013 contacts →

Partial evidence

“Vi leverer hele energisystemet!”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceStavanger, NorwayHQ checked Sep 21, 202611-5013 contacts →

Indirect evidence

“Engineering with a focus on the green path.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidencePorsgrunn, NorwayHQ checked Sep 21, 202611-5011 contacts →

Partial evidence

“We strive to lead the world into the new energy future by providing innovative solutions that make us more efficient and lower emissions.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial 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
25Partial evidenceSandnes, NorwayHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

“Excess Engineering is an international technical service provider to the oil, gas and renewable energy markets.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 102 energy technology consulting firms based in Norway

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Energy technology consulting firms based in Norway at a glance

As of Sep 21, 2026
44.5%Verified-email coverage
21.0Average contacts per company
1-10Median size (employees)
22.5%Largest-city concentration · Oslo
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
61
11-50
27
51-200
10
201-500
1
501-1,000
2
1,001-5,000
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 102 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 energy technology 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 “energy technology 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 energy technology 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 energy technology 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, 951 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.

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 energy technology 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 energy technology consulting firms are there based in Norway?

RevenueBase identified 102 energy technology 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?

CEGAL, headquartered in Sandnes, tops this list with the largest team on record.

Which city has the most energy technology consulting firms?

Oslo leads with 23 headquartered companies, followed by Stavanger (7) and Trondheim (6).

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 951 verified decision-maker contacts tracked across these 102 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.