Company lists · Data refreshed September 2026

Top 25 Energy technology consulting firms based in Finland

RevenueBase identified 72 energy technology consulting firms headquartered in Finland as of September 2026 and tracks 1,625 professional contacts across them, including 821 with verified work emails. Helsinki is the largest hub.

This list covers energy technology consulting firms headquartered in Finland, 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
72Companies
1,625Contacts tracked
821Verified emails
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The 25 largest energy technology consulting firms based in Finland

Ranked by team size
Top 25 of 72 energy technology consulting firms based in Finland, 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
1Partial evidenceHelsinki, FinlandHQ checked Sep 21, 202610001+940 contacts →

Partial evidence

“Wärtsilä leads the transition towards a 100% renewable energy future.”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceTampere, FinlandHQ checked Sep 21, 202651-200117 contacts →

Partial evidence

“Despro on 2015 perustettu energia- ja tietoliikennealan asiantuntijapalveluihin erikoistunut insinööritoimisto.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidencePorvoo, FinlandHQ checked Sep 21, 202651-20049 contacts →

Indirect evidence

“Insplan on kumppanisi vihreän siirtymän toteuttamisessa.”

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceHelsinki, FinlandHQ checked Sep 21, 202611-5038 contacts →

Partial evidence

“We help internationally focused Industrial, financial, utility and other clients take advantage of evolving energy market opportunities globally through world leading data sets…”

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceVaasa, FinlandHQ checked Sep 21, 202651-20037 contacts →

Partial evidence

“NEPower delivers electrification solutions for the industrial, grid and renewable energy sectors.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceUusimaa, FinlandHQ checked Sep 21, 202611-5029 contacts →

Partial evidence

“Höyrytys Oy on kokonaisvaltainen energiapalvelujen tuottaja, joka toteuttaa asiakkailleen joustavia energiaratkaisuja lämmön, höyryn ja sähkön tuotantoon.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidencePori, FinlandHQ checked Sep 21, 202651-20021 contacts →

Partial evidence

“Arenso – Arctic Energy Solutions – provides cutting-edge expertise in sustainable and impactful renewable energy.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceHelsinki, FinlandHQ checked Sep 21, 202611-5020 contacts →

Indirect evidence

“Forus is a novel finance and sales company that develops services to stop climate-change profitably.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceOulu, FinlandHQ checked Sep 21, 202611-5020 contacts →

Partial evidence

“Planora Oy was founded in 1987 and currently employs over 30 full-time energy engineers and consultants, environmental engineers, energy system designers, software developers and…”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceOulu, FinlandHQ checked Sep 21, 202611-5019 contacts →

Partial evidence

“CFE Finland is an independent expert company in energy infrastructure.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidenceHelsinki, FinlandHQ checked Sep 21, 202611-5016 contacts →

Strong evidence

“Ampner Oy – Power Engineering & DC Power Solutions for a Renewable Future Ampner is a Finnish technology company specialized in connecting renewable energy, energy storage systems…”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceTurku, FinlandHQ checked Sep 21, 202611-5014 contacts →

Partial evidence

“Finess Energy Oy toteuttaa avaimet käteen -energiaratkaisuja teollisuudelle ja kiinteistöille.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceHyvinkää, FinlandHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceEspoo, FinlandHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

“Ensense Oy on energiatoimialaan erikoistunut älykkään data-analytiikan palveluntuottaja.”

Source: RevenueBase Database · checked Sep 21, 2026
15Strong evidenceHelsinki, FinlandHQ checked Sep 21, 202651-20010 contacts →

Strong evidence

“Sustera Energy Consulting Oy on osa Sustera Groupia.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceHelsinki, FinlandHQ checked Sep 21, 202611-509 contacts →

Partial evidence

“Autamme tekemään järkevimmät energiaremontit, niin että kiinteistön kustannukset pysyvät kurissa ja energialuokka saadaan vähintään vaadittuun D-luokkaan.”

Source: RevenueBase Database · checked Sep 21, 2026
17Strong evidenceEspoo, FinlandHQ checked Sep 21, 20261-108 contacts →

Strong evidence

“Novox is an engineering consulting company specialiced in clean energy and in energy economics.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceJyväskylä, FinlandHQ checked Sep 21, 20261-108 contacts →

Partial evidence

“eWatt Smart Power Systems helps organizations gain real-time visibility into their electricity use through high-resolution energy monitoring and analytics, enabling them to reduce…”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceHelsinki, FinlandHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“Flexens is a consultancy and a project development company.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceOulu, FinlandHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Termode on luotettava ja palveleva kumppani, joka auttaa asiakkaitaan energiasektorin haasteissa tarjoamalla erilaisia asiantuntija- ja modernisointipalveluita puhtaampaan…”

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

Partial evidence

Energiatehokkuuden parantaminen Useimmissa rakennuksissa voidaan energiatehokkuutta parantaa edullisilla teknisillä ratkaisuilla.”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceJyvaskyla, FinlandHQ checked Sep 21, 20261-103 contacts →

Partial evidence

“CO2Esto Ltd is an expert company which is serving companies, communities and individuals to seek cost-efficient solutions to combat climate and energy challenges.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceVantaa, FinlandHQ checked Sep 21, 20261-103 contacts →

Partial evidence

“Wahlres Oy was founded in 2016 and aims to reduce the reliance of Finnish buildings on non-renewable energy sources.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceLahti, FinlandHQ checked Sep 21, 20261-103 contacts →

Partial evidence

“We are a traditional, but highly dynamic technology company with decades of combined experience in the fields of e.g.”

Source: RevenueBase Database · checked Sep 21, 2026
25Partial evidenceHelsinki, FinlandHQ checked Sep 21, 20261-103 contacts →

Partial evidence

“RENEWE - Uusiutuvan energian asiantuntijasi Suomen johtavat aurinkoenergia, lämpöpumppu, lataus- ja jäähdytysjärjestelmät sekä kokonaispalvelut yhdestä osoitteesta, suunnittelusta…”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 72 energy technology consulting firms based in Finland

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Energy technology consulting firms based in Finland at a glance

As of Sep 21, 2026
50.5%Verified-email coverage
22.6Average contacts per company
1-10Median size (employees)
30.6%Largest-city concentration · Helsinki
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
18
51-200
7
201-500
1
10001+
1

Email recency for this list is measured worldwide rather than for Finland, so it is reported there. Company counts and contact totals on this page are exact for Finland, over 72 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 Finland 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 Finland 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, 821 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 Finland?

RevenueBase identified 72 energy technology consulting firms headquartered in Finland 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?

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

Which city has the most energy technology consulting firms?

Helsinki leads with 22 headquartered companies, followed by Espoo (5) and Oulu (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 821 verified decision-maker contacts tracked across these 72 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.