Company lists · Data refreshed September 2026

Top 25 Energy infrastructure companies based in Finland

RevenueBase identified 51 energy infrastructure companies headquartered in Finland as of September 2026 and tracks 3,447 professional contacts across them, including 1,940 with verified work emails. Helsinki is the largest hub.

This list covers energy infrastructure companies 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 16, 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 16, 2026 86% judged on-target in blind review
51Companies
3,447Contacts tracked
1,940Verified emails
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The 25 largest energy infrastructure companies based in Finland

Ranked by team size
Top 25 of 51 energy infrastructure companies based in Finland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy infrastructure 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHelsinki, FinlandHQ checked Sep 16, 202610001+940 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidencePori, FinlandHQ checked Sep 16, 20261,001-5,000431 contacts →

Indirect evidence

“Delivering the essentials of tomorrow’s society.”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidencePorvoo, FinlandHQ checked Sep 16, 2026501-1,000424 contacts →

Indirect evidence

“Ensto enables green transition, reliable and safe supply of electricity by creating sustainable solutions for electricity distribution.”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceVantaa, FinlandHQ checked Sep 16, 2026501-1,000302 contacts →

Partial evidence

“Our vision is to become the leading partner in the energy transition.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceTampere, FinlandHQ checked Sep 16, 2026201-500229 contacts →

Indirect evidence

“Elenia palvelee 442 kotitalous- ja yritysasiakasta yli sadan kunnan alueella Hämeessä, Pirkanmaalla, Keski-Suomessa ja Pohjanmaalla.”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceHelsinki, FinlandHQ checked Sep 16, 202651-200125 contacts →

Partial evidence

“We help industrial and real estate customers to grow and prosper by taking their utility infrastructure to the next level.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceOulu, FinlandHQ checked Sep 16, 2026201-500105 contacts →

Partial evidence

“Oulun Energia -konsernin perusta on energiantuotannossa sekä lämmön- ja sähkönsiirrossa ja luomme uutta tukijalkaa kiertotaloudesta.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceToivala, FinlandHQ checked Sep 16, 2026201-50093 contacts →

Partial evidence

“Savon Voima on monipuolisia energiapalveluita tarjoava energiakonserni ja Itä-Suomen tunnetuin energia-alan brändi.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceSavonlinna, FinlandHQ checked Sep 16, 2026201-50066 contacts →

Indirect evidence

“Norelco is a forward-thinking innovator and a growing technology company that combines strong expertise in power distribution, high quality standards and modern technology to…”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceHämeenlinna, FinlandHQ checked Sep 16, 202651-20062 contacts →

Indirect evidence

“Käyttää, hyödyntää, kehittää – vai omistaa, operoida ja huolehtia?”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceKerava, FinlandHQ checked Sep 16, 202651-20051 contacts →

Partial evidence

“Keravan Energia -konsernin muodostavat Keravan Energia Oy, Sipoon Energia Oy ja Keravan Lämpövoima Oy.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidencePorvoo, FinlandHQ checked Sep 16, 202651-20049 contacts →

Indirect evidence

“Insplan on kumppanisi vihreän siirtymän toteuttamisessa.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceLappeenranta, FinlandHQ checked Sep 16, 202651-20040 contacts →

Partial evidence

“Olemme Suomen ensimmäinen hiilineutraali energia- ja vesiyhtiö, joka rakentaa maakuntaamme kestävää tulevaisuutta.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceKotka, FinlandHQ checked Sep 16, 202651-20038 contacts →

Partial evidence

“Auris Energia on energia-alan konserni, jonka juuret ulottuvat 1860-luvulle.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceVaasa, FinlandHQ checked Sep 16, 202651-20037 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceKuopio, FinlandHQ checked Sep 16, 2026201-50037 contacts →

Indirect evidence

“Our mission, together with our customers, is to build advanced work and living environments.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceLempäälä, FinlandHQ checked Sep 16, 202651-20027 contacts →

Indirect evidence

“Sähkölandia Oy on valtakunnallisesti toimiva nuori ja laadukas sähköalan palveluyritys.”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceHamina, FinlandHQ checked Sep 16, 202611-5023 contacts →

Partial evidence

“Haminan Energia Oy on monipuolinen ja nykyaikainen energiayhtiö.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 202611-5020 contacts →

Indirect evidence

“Olemme Suomen johtavia sähkötekniseen suunnitteluun erikoistuneita toimistoja.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidencePorvoo, FinlandHQ checked Sep 16, 202651-20016 contacts →

Indirect evidence

“Exsane tuottaa monipuolisia palveluja sähkönjakelu, tele- ja ulkovalaistusverkkojen ylläpitoon, linjan raivaukseen, tarkastukseen ja suunnitteluun.”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceHelsinki, FinlandHQ checked Sep 16, 202611-5016 contacts →

Partial 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 16, 2026
22Partial evidenceAlastaro, FinlandHQ checked Sep 16, 202651-20015 contacts →

Partial evidence

Energy company located in Alastaro, Finland.”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceKarjaa, FinlandHQ checked Sep 16, 202651-20012 contacts →

Indirect evidence

“N3M Power Oy Ab is a modern service company that looks forward to quality, safety and sustainability.”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceRauma, FinlandHQ checked Sep 16, 202611-5011 contacts →

Partial evidence

“Rauman Energia -konserni tuottaa laadukkaita energiatuotteita ja -palveluja kilpailukykyiseen hintaan.”

Source: RevenueBase Database · checked Sep 16, 2026
25Indirect evidenceHyvinkää, FinlandHQ checked Sep 16, 202611-5011 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 51 energy infrastructure companies based in Finland

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Energy infrastructure companies based in Finland at a glance

As of Sep 16, 2026
56.3%Verified-email coverage
67.6Average contacts per company
11-50Median size (employees)
13.7%Largest-city concentration · Helsinki
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
9
11-50
16
51-200
14
201-500
6
501-1,000
3
1,001-5,000
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 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 energy infrastructure 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 Finland whose own description of what they do matches “energy infrastructure 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 energy infrastructure 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 energy infrastructure companies, 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, 1,940 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 16, 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 infrastructure 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 energy infrastructure companies are there based in Finland?

RevenueBase identified 51 energy infrastructure companies 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 infrastructure companies?

Helsinki leads with 7 headquartered companies, followed by Lempaala (4) and Porvoo (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 1,940 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 16, 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.