Company lists · Data refreshed September 2026

Top 25 Photovoltaic companies based in Finland

RevenueBase identified 77 photovoltaic companies headquartered in Finland as of September 2026 and tracks 706 professional contacts across them, including 293 with verified work emails. Helsinki is the largest hub.

This list covers photovoltaic 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 20, 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 20, 2026 86% judged on-target in blind review
77Companies
706Contacts tracked
293Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest photovoltaic companies based in Finland

Ranked by team size
Top 25 of 77 photovoltaic companies based in Finland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to photovoltaic 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
1Indirect evidenceEspoo, FinlandHQ checked Sep 20, 202651-200119 contacts →

Indirect evidence

“Founded in 1975 in Finland, Efore Telecom Finland Oy has grown from a six-person engineering office into a global energy solutions provider with five decades of expertise.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceHelsinki, FinlandHQ checked Sep 20, 202651-20048 contacts →

Indirect evidence

“Korkia is a global investor and developer accelerating the transition to renewable energy.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceVaasa, FinlandHQ checked Sep 20, 202651-20037 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidencePirkkala, FinlandHQ checked Sep 20, 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 20, 2026
5Indirect evidenceEspoo, FinlandHQ checked Sep 20, 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 20, 2026
6Indirect evidenceTampere, FinlandHQ checked Sep 20, 20261-1022 contacts →

Indirect evidence

“Enico offers wide-ranging production, manufacturing and project services in the field of renewable energy.”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceHelsinki, FinlandHQ checked Sep 20, 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 20, 2026
8Indirect evidenceVantaa, FinlandHQ checked Sep 20, 202651-20019 contacts →

Indirect evidence

“Tarjoamme sähköisen talotekniikan palveluja: suunnittelua ja asennusta.”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceVantaa, FinlandHQ checked Sep 20, 202611-5019 contacts →

Indirect evidence

“Olemme kotimainen toimija ja kokenut aurinkoenergian asiantuntija.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceEspoo, FinlandHQ checked Sep 20, 202611-5017 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceEspoo, FinlandHQ checked Sep 20, 202611-5012 contacts →

Indirect evidence

“Endeas Oy, based in Finland, has delivered over 600 QuickSun solar simulator for PV testings since 2001.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceTampere, FinlandHQ checked Sep 20, 202611-5011 contacts →

Indirect evidence

“Wisol Oy on kotimainen yritys, joka kehittää, myy ja asentaa testatusti kestäviä aurinkopaneelien kiinnitystuotteita.”

Source: RevenueBase Database · checked Sep 20, 2026
13Strong evidenceHelsinki, FinlandHQ checked Sep 20, 20261-1010 contacts →

Strong evidence

“Wind power infrastructure and utility-scale solar photovoltaic (PV) power plants on a turnkey basis.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceOrimattila, FinlandHQ checked Sep 20, 202611-5010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceMuhos, FinlandHQ checked Sep 20, 202651-2009 contacts →

Indirect evidence

“Olemme yksi suurimmista Suomessa aurinkovoimaa rakentavista yrityksistä.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceFinlandHQ checked Sep 20, 202651-2009 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
17Indirect evidenceHelsinki, FinlandHQ checked Sep 20, 20261-108 contacts →

Indirect evidence

“A smooth solar energy plant development process for all parties involved We are a Finnish energy company developing clean and sustainable utility-scale solar power parks until the…”

Source: RevenueBase Database · checked Sep 20, 2026
18Indirect evidenceMikkeli, FinlandHQ checked Sep 20, 202611-508 contacts →

Indirect evidence

“Valoe is a technology provider with a mission of clean solar energy.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceHelsinki, FinlandHQ checked Sep 20, 20261-108 contacts →

Indirect evidence

“RE-Tech is your dedicated partner in renewable industry.”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceLempäälä, FinlandHQ checked Sep 20, 202611-508 contacts →

Indirect evidence

“Finnwind Oy on 1993 perustettu suomalainen teknologiayritys, joka urakoi aurinkovoimaloita ja suuria maa-asenteisia aurinkopuistoja sekä valmistaa ja markkinoi maa-asenteisten…”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceHelsinki, FinlandHQ checked Sep 20, 20261-107 contacts →

Indirect evidence

“Will & Must is a Helsinki-based developer of energy and infrastructure projects, founded in 2022.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceTampere, FinlandHQ checked Sep 20, 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 20, 2026
23Indirect evidenceKorsholm, FinlandHQ checked Sep 20, 20261-105 contacts →

Indirect evidence

“Solar park developers and experts.”

Source: RevenueBase Database · checked Sep 20, 2026
24Indirect evidenceRiihimäki, FinlandHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“Modern-time thinking for the high-quality and stylish installation of solar panels.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceVantaa, FinlandHQ checked Sep 20, 20261-104 contacts →

Indirect evidence

“Ajattelimme sähköntuotannon uusiksi”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 77 photovoltaic companies based in Finland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 293 reachable decision-makers.

Free signup · no credit card

View the full list →

Photovoltaic companies based in Finland at a glance

As of Sep 20, 2026
41.5%Verified-email coverage
9.2Average contacts per company
1-10Median size (employees)
24.7%Largest-city concentration · Helsinki
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
22
51-200
8
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 77 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 photovoltaic 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 “photovoltaic 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 photovoltaic 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 photovoltaic 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, 293 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 20, 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 photovoltaic 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 photovoltaic companies are there based in Finland?

RevenueBase identified 77 photovoltaic 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?

EFORE, headquartered in Espoo, tops this list with the largest team on record.

Which city has the most photovoltaic companies?

Helsinki leads with 19 headquartered companies, followed by Vantaa (7) and Espoo (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 293 verified decision-maker contacts tracked across these 77 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 77 photovoltaic companies 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.