Company lists · Data refreshed September 2026

Top 25 Energy maintenance service providers based in Finland

RevenueBase identified 92 energy maintenance service providers headquartered in Finland as of September 2026 and tracks 5,263 professional contacts across them, including 2,479 with verified work emails. Oulu is the largest hub.

This list covers energy maintenance service providers 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
92Companies
5,263Contacts tracked
2,479Verified emails
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The 25 largest energy maintenance service providers based in Finland

Ranked by team size
Top 25 of 92 energy maintenance service providers 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 maintenance service providers: 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
1Indirect evidenceVantaa, FinlandHQ checked Sep 16, 202610001+4,438 contacts →

Indirect evidence

“About Caverion Caverion is an expert for smart and sustainable built environments, enabling performance and people’s well-being.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceVaasa, FinlandHQ checked Sep 16, 2026201-500153 contacts →

Indirect evidence

“Prohoc was born to care.”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceTampere, FinlandHQ checked Sep 16, 202651-20073 contacts →

Indirect evidence

“JTA-Connection is a global enterprise providing a versatile range of effective, high-quality solutions to meet the rapidly changing demands of technology industries.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 2026201-50067 contacts →

Indirect evidence

“Aro Systems Oy on Suomen johtavia talotekniikan asiantuntija- ja palveluyhtiöitä yli 70 vuoden kokemuksella.”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial 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
6Partial evidenceNokia, FinlandHQ checked Sep 16, 202651-20037 contacts →

Partial evidence

“Masor Works Oy, established in 2009, is specialized in industrial maintenance and installation.”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceEura, FinlandHQ checked Sep 16, 202651-20036 contacts →

Indirect evidence

“ETH Group Oy on vuonna 2006 perustettu teollisuuden ja voimaloiden asennusta, huoltoa ja kunnossapitoa tekevä yhtiö.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceUusimaa, FinlandHQ checked Sep 16, 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 16, 2026
9Indirect evidenceRauma, FinlandHQ checked Sep 16, 202651-20023 contacts →

Indirect evidence

“Notra on teollisuuden kunnossapitoon, modernisointeihin ja projektitoimituksiin erikoistunut yritys.”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceVantaa, FinlandHQ checked Sep 16, 202651-20020 contacts →

Indirect evidence

“Olemme pääkaupunkiseudun johtavia LVI-huollon ja LVI-palvelu-urakoinnin asiantuntijayrityksiä.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceTampere, FinlandHQ checked Sep 16, 202651-20018 contacts →

Indirect evidence

“The company is specialized in electrical and automation services for customers at industrial and facility segments.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidencePori, FinlandHQ checked Sep 16, 202651-20015 contacts →

Partial evidence

“Cleaner energy in capable hands.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceKajaani, FinlandHQ checked Sep 16, 202651-20014 contacts →

Indirect evidence

“Me Paikallis-Sähköllä asennamme, huollamme ja modernisoimme Pohjois-Suomen sähköjä yli 180 ammattilaisen voimin.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceIvalo, FinlandHQ checked Sep 16, 202651-20013 contacts →

Indirect evidence

“Ellappi on sähköurakointiyhtiö, joka palvelee monipuolisesti Pohjois, Keski- ja Itä-Lapissa.”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceVarkaus, FinlandHQ checked Sep 16, 2026201-50013 contacts →

Indirect evidence

“Elcoline Group is established in 2002.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceTampere, FinlandHQ checked Sep 16, 202651-20013 contacts →

Partial evidence

“HTT High Tech Technology is a proficient and experienced service company in the metal, energy, machinery and marine industry”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceRaisio, FinlandHQ checked Sep 16, 202651-20012 contacts →

Indirect evidence

“TRP Group is a enterprise providing services in the HVAC, Electricity and Refrigeration sectors.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceKuopio, FinlandHQ checked Sep 16, 202611-5012 contacts →

Indirect evidence

“Kuopion Finteco LVIS Oy on kokonaisvaltainen talotekniikka-alan osaaja.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceKotka, FinlandHQ checked Sep 16, 20261-1011 contacts →

Indirect evidence

“Auser Oy starttasi vuonna 1993.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceHalikko, FinlandHQ checked Sep 16, 20261-1010 contacts →

Partial evidence

Energytech on teollisuuden energiateknisten järjestelmien maahantuontiin, asennuksiin ja huoltoon erikoistunut yritys, joka toteuttaa asiakkailleen räätälöityjä energiaratkaisuja…”

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

Partial evidence

“We do industrial mechanical installation, maintenance and construction as well as electrical and automation services.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceJyväskylä, FinlandHQ checked Sep 16, 202611-509 contacts →

Partial evidence

EnergiaYkkönen on kotitalouksien energia- ja putkiremontteihin keskittyvä yritys.”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceNokia, FinlandHQ checked Sep 16, 202611-508 contacts →

Indirect evidence

“Tp-kunnossapito Oy is a company based out of Pirkkalaistie 3, Nokia, Pirkanmaa, Finland.”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceOulu, FinlandHQ checked Sep 16, 202651-2008 contacts →

Partial evidence

“OT Service Oy was founded in 2011 and is a company focused on mechanical maintenance and machine works.”

Source: RevenueBase Database · checked Sep 16, 2026
25Indirect evidenceEspoo, FinlandHQ checked Sep 16, 202611-507 contacts →

Indirect evidence

“Tarjoamme LVIS-palvelut aina suunnittelusta asennukseen.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 92 energy maintenance service providers based in Finland

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Energy maintenance service providers based in Finland at a glance

As of Sep 16, 2026
47.1%Verified-email coverage
57.2Average contacts per company
11-50Median size (employees)
7.6%Largest-city concentration · Oulu
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
26
51-200
14
201-500
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 92 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 maintenance service providers, 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 maintenance service providers”. 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 maintenance service providers), 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 maintenance service providers, 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, 2,479 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 maintenance service providers, 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 maintenance service providers are there based in Finland?

RevenueBase identified 92 energy maintenance service providers 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?

Caverion, headquartered in Vantaa, tops this list with the largest team on record.

Which city has the most energy maintenance service providers?

Oulu leads with 7 headquartered companies, followed by Pori (7) and Vantaa (6).

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 2,479 verified decision-maker contacts tracked across these 92 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.