Company lists · Data refreshed September 2026

Top 25 Renewable energy contractors based in Finland

RevenueBase identified 79 renewable energy contractors headquartered in Finland as of September 2026 and tracks 561 professional contacts across them, including 265 with verified work emails. Helsinki is the largest hub.

This list covers renewable energy contractors 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 17, 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 17, 2026 86% judged on-target in blind review
79Companies
561Contacts tracked
265Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest renewable energy contractors based in Finland

Ranked by team size
Top 25 of 79 renewable energy contractors based in Finland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy contractors: 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
1Strong evidenceVaasa, FinlandHQ checked Sep 17, 202651-20037 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
2Indirect evidenceEspoo, FinlandHQ checked Sep 17, 202611-5035 contacts →

Indirect evidence

“Tarjoamme maalämpöä palveluna yrityksille ja taloyhtiöille.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidencePirkkala, FinlandHQ checked Sep 17, 202611-5034 contacts →

Indirect evidence

“Everything you need for utility-scale solar parks and commercial & industrial solar power plants in Finland: financial modelling, industry-leading engineering, construction and…”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceEspoo, FinlandHQ checked Sep 17, 202611-5028 contacts →

Indirect evidence

“At 1KOMMA5° Suomi (formerly Solar Age Oy), we believe in making it easy for people to access solar power solutions for their homes, businesses, and farms.”

Source: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceVantaa, FinlandHQ checked Sep 17, 202651-20026 contacts →

Indirect evidence

“Tom Allen Senera Oy is one of the leading providers of heating and cooling solutions to residential and commercial buildings in Finland.”

Source: RevenueBase Database · checked Sep 17, 2026
6Partial evidenceLahti, FinlandHQ checked Sep 17, 202651-20025 contacts →

Partial evidence

“Lemkem is the leading turnkey sustainable energy solutions provider in Finland.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceHelsinki, FinlandHQ checked Sep 17, 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 17, 2026
8Indirect evidenceVantaa, FinlandHQ checked Sep 17, 202651-20019 contacts →

Indirect evidence

“Tarjoamme sähköisen talotekniikan palveluja: suunnittelua ja asennusta.”

Source: RevenueBase Database · checked Sep 17, 2026
9Indirect evidenceVantaa, FinlandHQ checked Sep 17, 202611-5019 contacts →

Indirect evidence

“Olemme kotimainen toimija ja kokenut aurinkoenergian asiantuntija.”

Source: RevenueBase Database · checked Sep 17, 2026
10Partial evidenceEspoo, FinlandHQ checked Sep 17, 202611-5017 contacts →

Partial evidence

“Solarvoima makes Solar Energy available for home owners, businesses, schools, non-profits and government organizations.”

Source: RevenueBase Database · checked Sep 17, 2026
11Partial evidenceHalikko, FinlandHQ checked Sep 17, 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 17, 2026
12Indirect evidenceOrimattila, FinlandHQ checked Sep 17, 202611-5010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
13Indirect evidenceMuhos, FinlandHQ checked Sep 17, 202651-2009 contacts →

Indirect evidence

“Olemme yksi suurimmista Suomessa aurinkovoimaa rakentavista yrityksistä.”

Source: RevenueBase Database · checked Sep 17, 2026
14Partial evidenceHelsinki, FinlandHQ checked Sep 17, 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 17, 2026
15Partial evidenceJyväskylä, FinlandHQ checked Sep 17, 202611-509 contacts →

Partial evidence

EnergiaYkkönen on kotitalouksien energia- ja putkiremontteihin keskittyvä yritys.”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceVantaa, FinlandHQ checked Sep 17, 202611-509 contacts →

Partial evidence

“Innoair Oy myy, suunnittelee ja asentaa energiatehokkaat ilmastointi, ilmanvaihto- ja lämmitysratkaisut kuluttajille, teollisuuteen ja yrityksille.”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceFinlandHQ checked Sep 17, 202651-2009 contacts →

Indirect evidence

“Kotisol Oy toimittaa aurinkosähköjärjestelmät pientaloihin, maatiloille, yrityskiinteistöihin ja taloyhtiöille.”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceEspoo, FinlandHQ checked Sep 17, 202611-507 contacts →

Indirect evidence

“Tarjoamme LVIS-palvelut aina suunnittelusta asennukseen.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceTampere, FinlandHQ checked Sep 17, 202611-506 contacts →

Indirect evidence

“Ralos Oy provides the most intelligent and efficient solar power plants for homes, industries and utilities.”

Source: RevenueBase Database · checked Sep 17, 2026
20Indirect evidenceVantaa, FinlandHQ checked Sep 17, 20261-104 contacts →

Indirect evidence

“Ajattelimme sähköntuotannon uusiksi”

Source: RevenueBase Database · checked Sep 17, 2026
21Partial evidenceSipoo, FinlandHQ checked Sep 17, 20261-104 contacts →

Partial evidence

“Rasol Oy on täysin kotimainen uusiutuvan energian asiantuntija.”

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidencePori, FinlandHQ checked Sep 17, 20261-104 contacts →

Indirect evidence

“Ilmalämpöpumput/ Vesi-ilmalämpöpumput/ Maalämpö/ Aurinkopaneelit/ Rakennustyöt”

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceImatra, FinlandHQ checked Sep 17, 202611-503 contacts →

Indirect evidence

“Elektroway Oy is a power-hungry electricity company supplying solar photovoltaic systems as well as air heat, air-water and geothermal heat pumps.”

Source: RevenueBase Database · checked Sep 17, 2026
24Partial evidenceVantaa, FinlandHQ checked Sep 17, 20261-103 contacts →

Partial evidence

“Pistoke Oy auttaa suomalaisia kiinteistönomistajia ja rakennuttajia pienentämään rakennusten hiilidioksidipäästöjä ja saavuttamaan korkean lämmityksen energiaomavaraisuuden.”

Source: RevenueBase Database · checked Sep 17, 2026
25Strong evidenceVantaa, FinlandHQ checked Sep 17, 20261-103 contacts →

Strong 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 17, 2026

Showing 25 of 79 renewable energy contractors based in Finland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 265 reachable decision-makers.

Free signup · no credit card

View the full list →

Renewable energy contractors based in Finland at a glance

As of Sep 17, 2026
47.2%Verified-email coverage
7.1Average contacts per company
1-10Median size (employees)
12.7%Largest-city concentration · Helsinki
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
50
11-50
21
51-200
7
201-500
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 79 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 renewable energy contractors, 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 “renewable energy contractors”. 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 renewable energy contractors), 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 renewable energy contractors, 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, 265 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 17, 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 renewable energy contractors, 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 renewable energy contractors are there based in Finland?

RevenueBase identified 79 renewable energy contractors 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?

Nepower, headquartered in Finland, tops this list with the largest team on record.

Which city has the most renewable energy contractors?

Helsinki leads with 10 headquartered companies, followed by Vantaa (10) and Espoo (7).

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 265 verified decision-maker contacts tracked across these 79 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 79 renewable energy contractors based in Finland. Start with a free account, no credit card.

Download this list →

Related lists

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.