Company lists · Data refreshed September 2026

Top 24 Residential energy efficiency companies based in Norway

Name: Residential energy efficiency companies based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 51 companies tracked

RevenueBase identified 51 residential energy efficiency companies headquartered in Norway as of September 2026 and tracks 315 professional contacts across them, including 84 with verified work emails. Oslo is the largest hub.

This list covers residential energy efficiency companies 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

51Companies

315Contacts tracked

84Verified emails

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The 24 largest residential energy efficiency companies based in Norway

Ranked by team size

Top 24 of 51 residential energy efficiency companies 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 residential energy efficiency companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	EM Systemer AS	Partial evidence	Bergen, NorwayHQ checked Sep 17, 2026	51-200	25 contacts →
	Partial evidence “Gjennom bransjekunnskap, nytenkning og engasjement skal vi tilby energieffektive systemer og tekniske løsninger som øker lønnsomheten og komforten i kommersiell bygningsdrift.”” Source: RevenueBase Database · checked Sep 17, 2026
2	Green Norway	Indirect evidence	Grimstad, NorwayHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
3	TGN Energy	Partial evidence	Tønsberg, NorwayHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Our mission is to maximize energy access while minimizing environmental impact.” Source: RevenueBase Database · checked Sep 17, 2026
4	Smart Energi	Partial evidence	Fredrikstad, NorwayHQ checked Sep 17, 2026	11-50	10 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
5	Termoenergi Norge AS	Partial evidence	Sandefjord, NorwayHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Termoenergi Norge AS er spesialister på energisparende tiltak innen byggenæringen.#Energimerking #Energirådgivning #Energivurdering tekniske anlegg, Bygningsfysisk prosjektering…” Source: RevenueBase Database · checked Sep 17, 2026
6	VILDA	Strong evidence	Bergen, NorwayHQ checked Sep 17, 2026	1-10	9 contacts →
	Strong evidence “Get access to a wealth of energy performance insights for any, and every, residential property.” Source: RevenueBase Database · checked Sep 17, 2026
7	Ista Norge	Partial evidence	Trollåsen, NorwayHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Vi måler, fordeler og gjør en forskjell Hos ista Norge jobber vi for en grønnere fremtid ved å måle og fordele energikostnader i borettslag og sameier.” Source: RevenueBase Database · checked Sep 17, 2026
8	Eld365	Partial evidence	Skodje, NorwayHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Vi tar oss av alt som har med energisparing for din bedrift.” Source: RevenueBase Database · checked Sep 17, 2026
9	Grønn Strøm AS	Partial evidence	Nesbru, NorwayHQ checked Sep 17, 2026	11-50	4 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 17, 2026
10	Powerpal	Partial evidence	Stavanger, NorwayHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Driving Sustainable Energy Solutions At Powerpal, we’re transforming how businesses access power with scalable, sustainable energy solutions tailored to meet today’s dynamic…” Source: RevenueBase Database · checked Sep 17, 2026
11	Of Energi AS	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “OF Energi eier og drifter lokale energisentraler til bolig- og næringsbygg.” Source: RevenueBase Database · checked Sep 17, 2026
12	Hafa Elektro AS	Indirect evidence	Larvik, NorwayHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
13	Envieco AS	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Envieco AS har spesialisert seg på energi effektivisering av eiendom gjennom installasjon av produkter som henter energi fra omgivelsene våre.” Source: RevenueBase Database · checked Sep 17, 2026
14	Nordhordland Elektro AS	Indirect evidence	Isdalstø, NorwayHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
15	energipakka.no	Indirect evidence	Åskollen, NorwayHQ checked Sep 17, 2026	51-200	2 contacts →
	Indirect evidence “Helhetlig og lønnsom oppgradering av eksisterende bygg.” Source: RevenueBase Database · checked Sep 17, 2026
16	Riecon AS	Partial evidence	Skjetten, NorwayHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Riecon er et konsulentfirma som arbeider for å redusere bedriftens energikostnader, samt å levere komplette tjenester som vil gjøre arbeidet med energi og miljø betydelig enklere.” Source: RevenueBase Database · checked Sep 17, 2026
17	EEFFY	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Lurer du på hva som er de riktige energitiltak for akkurat din bolig?” Source: RevenueBase Database · checked Sep 17, 2026
18	Z Energi AS	Partial evidence	Stavanger, NorwayHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Z Energi AS er en bedrift i Stavanger som spesialiserer seg innen energieffektivisering og 4.” Source: RevenueBase Database · checked Sep 17, 2026
19	EIIK	Indirect evidence	Sandvika, NorwayHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Hva er Eiik?” Source: RevenueBase Database · checked Sep 17, 2026
20	Beha Elektro AS	Partial evidence	Rolvsøy, NorwayHQ checked Sep 17, 2026	1-10	2 contacts →
	Partial evidence “Energy-smart heating and indoor climate solutions, for conscious people appreciating sustainable aestetics and smartness.” Source: RevenueBase Database · checked Sep 17, 2026
21	Elektro 24 Bergen AS	Indirect evidence	Kleppestø, NorwayHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Energitiltaket AS	Partial evidence	Kristiansand, NorwayHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “Vi leverer tjenester og produkter til energitiltak og bærekraftige energiløsninger.” Source: RevenueBase Database · checked Sep 17, 2026
23	Gamechanger AS	Strong evidence	Stavanger, NorwayHQ checked Sep 17, 2026	1-10	1 contacts →
	Strong evidence “we contribute to the reduction of greenhouse gas emissions through implementing our energy-efficiency platform to safeguard the environment, while at the same time maximize our…” Source: RevenueBase Database · checked Sep 17, 2026
24	Tjøme & Hvasser Elektriske	Indirect evidence	Tjøme, NorwayHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: residential energy efficiency companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names residential energy efficiency companies.
Partial evidence: Its own public description names part of residential energy efficiency companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential energy efficiency companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 51 residential energy efficiency companies based in Norway

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Residential energy efficiency companies based in Norway at a glance

As of Sep 17, 2026

26.7%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

17.6%Largest-city concentration · Oslo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 51 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 residential energy efficiency companies, 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 “residential energy efficiency companies”. 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 residential energy efficiency companies), 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 residential energy efficiency companies, 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, 84 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 residential energy efficiency companies, 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 residential energy efficiency companies are there based in Norway?

RevenueBase identified 51 residential energy efficiency companies 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?

EM Systemer AS, headquartered in Norway, tops this list with the largest team on record.

Which city has the most residential energy efficiency companies?

Oslo leads with 9 headquartered companies, followed by Stavanger (3) and Trondheim (3).

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 84 verified decision-maker contacts tracked across these 51 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.