Company lists · Data verified August 2026

Top 25 Ecological consulting firms based in Norway

Name: Ecological consulting firms based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 51 companies tracked

There are 51 ecological consulting firms headquartered in Norway (RevenueBase, August 2026). RevenueBase tracks 823 professional contacts across them, including 331 with verified work emails and 20 with mobile numbers. Oslo is the largest hub.

This list covers ecological consulting firms headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

51Companies

823Contacts tracked

331Verified emails

20Mobile numbers

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The 25 largest ecological consulting firms based in Norway

Ranked by team size

Top 25 of 51 ecological consulting firms based in Norway, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	NINA	Sandnes	201-500	359	149
2	Akvaplan-Niva	Alta	51-200	90	4
3	Aqua Kompetanse AS	Flatanger	51-200	53	30
4	ENTRO	Trondheim	51-200	51	28
5	VSO Consulting VSÓ Ráðgjöf	Jessheim	51-200	47	33
6	Erichsen & Horgen ER Blitt EN DEL AV Multiconsult	Skien	n/a	32	19
7	Evotek AS	Lysaker	11-50	22	5
8	Ecofact	Vestby	11-50	17	9
9	Riksheim	Alesund	11-50	14	8
10	Bergfald Miljørådgivere	Skien	1-10	12	9
11	Huslid Consult AS	Oslo	1-10	10	6
12	Miljøfaglig Utredning AS	Oslo	11-50	8	6
13	Rådgivende Biologer	Bergen	11-50	8	3
14	Miljovakta AS	n/a	1-10	6	6
15	Energiråd AS	Alesund	1-10	4	3
16	Biota Naturkompetanse AS	Bergen	1-10	4	1
17	Core Technology AS	Stavanger	n/a	4	1
18	Dokkadeltaet Nasjonale Våtmarkssenter	Odnes	11-50	3	1
19	Global Consulting Sustainability AS	n/a	1-10	3	1
20	YM Consult AS	Oslo	1-10	2	2
21	Onshore Aqua AS	Eikefjord	1-10	2	1
22	Pens AS	Trondheim	1-10	2	1
23	Marbio AS	Levanger	1-10	2	1
24	Balansepluss	Oslo	1-10	1	1
25	Misund Green Consulting	Molde	1-10	1	1

Showing 25 of 51 ecological consulting firms based in Norway

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Ecological consulting firms based in Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 13 HQs

20Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Ecological consulting firms by metro

Metro	Companies
Ecological consulting firms in Oslo	13
Ecological consulting firms in Trondheim	4
Ecological consulting firms in Bergen	3
Ecological consulting firms in Stavanger	2
Ecological consulting firms in Alesund	2
Ecological consulting firms in Skien	2
Ecological consulting firms in Tonsberg	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “ecological consulting firms”, with match quality audited by blind human judging, and headquartered in Norway.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many ecological consulting firms are there based in Norway?

There are 51 ecological consulting firms headquartered in Norway as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most ecological consulting firms?

Oslo leads with 13 headquartered companies, followed by Trondheim (4) and Bergen (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 331 verified decision-maker contacts tracked across these 51 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.