Company lists · Data verified August 2026

Top 25 Clean energy consultancy companies based in Finland

Name: Clean energy consultancy companies based in Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 106 companies tracked

There are 106 clean energy consultancy companies headquartered in Finland (RevenueBase, August 2026). RevenueBase tracks 1,813 professional contacts across them, including 876 with verified work emails and 117 with mobile numbers. Helsinki is the largest hub.

This list covers clean energy consultancy companies headquartered in Finland, 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.

106Companies

1,813Contacts tracked

876Verified emails

117Mobile numbers

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The 25 largest clean energy consultancy companies based in Finland

Ranked by team size

Top 25 of 106 clean energy consultancy companies based in Finland, 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	Wärtsilä Energy	Helsinki	10001+	948	481
2	Dovre Group	Espoo	501-1,000	166	42
3	RAPP	Tampere	51-200	57	30
4	Finnish Overseas Consultants Finnoc	Helsinki	51-200	39	11
5	Gaia Consulting	Turku	51-200	38	3
6	Etha OY	Helsinki	11-50	35	25
7	Kaskas	Helsinki	11-50	25	17
8	Lemkem	Lahti	51-200	25	16
9	Arenso OY Arctic Energy Solutions	Pori	51-200	23	14
10	Valonia	Turku Turku	11-50	22	13
11	Planora OY	Porvoo	11-50	20	14
12	MDI Part Of FCG	Seinajoki	11-50	20	13
13	Oomi Solar	Vantaa	11-50	19	13
14	Forus OY	Helsinki	11-50	19	12
15	CFE Finland OY	Vantaa	11-50	19	12
16	Planera	Helsinki	11-50	17	16
17	Vatajankoski	Kankaanpaa	51-200	17	15
18	Greenstream Network LTD	Helsinki	11-50	13	6
19	Nolla E	Turku	11-50	12	8
20	Taigawise	Helsinki	1-10	10	7
21	Sustera Energy Consulting OY	Tampere	51-200	10	6
22	PQR	Espoo	51-200	10	3
23	Planius	Helsinki	11-50	9	6
24	Novox OY	Espoo	1-10	8	7
25	Insinööritoimisto Vesitaito OY	Tampere	11-50	8	6

Showing 25 of 106 clean energy consultancy companies based in Finland

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Clean energy consultancy companies based in Finland at a glance

As of Aug 28, 2026

1-10Median size (employees)

HelsinkiLargest hub · 39 HQs

117Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

10001+

Clean energy consultancy companies by metro

Metro	Companies
Clean energy consultancy companies in Helsinki	39
Clean energy consultancy companies in Espoo	11
Clean energy consultancy companies in Tampere	8
Clean energy consultancy companies in Turku	5
Clean energy consultancy companies in Jyvaskyla	4
Clean energy consultancy companies in Oulu	4
Clean energy consultancy companies in Vantaa	4
Clean energy consultancy companies in Lahti	3

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 “clean energy consultancy companies”, with match quality audited by blind human judging, and headquartered in Finland.
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; 5 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 clean energy consultancy companies are there based in Finland?

There are 106 clean energy consultancy companies headquartered in Finland as of August 2026 (RevenueBase).

What is the largest company on this list?

Wärtsilä Energy, headquartered in Helsinki, tops this list with the largest team on record.

Which city has the most clean energy consultancy companies?

Helsinki leads with 39 headquartered companies, followed by Espoo (11) and Tampere (8).

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 876 verified decision-maker contacts tracked across these 106 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.