Company lists · Data refreshed September 2026

Top 23 Photovoltaic system designing companies based in Finland

RevenueBase identified 42 photovoltaic system designing companies headquartered in Finland as of September 2026 and tracks 269 professional contacts across them, including 146 with verified work emails. Helsinki is the largest hub.

This list covers photovoltaic system designing 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
42Companies
269Contacts tracked
146Verified emails
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The 23 largest photovoltaic system designing companies based in Finland

Ranked by team size
Top 23 of 42 photovoltaic system designing 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 photovoltaic system designing 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 evidenceVaasa, FinlandHQ checked Sep 16, 202651-20037 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidencePirkkala, FinlandHQ checked Sep 16, 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 16, 2026
3Indirect evidenceEspoo, FinlandHQ checked Sep 16, 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 16, 2026
4Indirect evidenceVantaa, FinlandHQ checked Sep 16, 202651-20019 contacts →

Indirect evidence

“Tarjoamme sähköisen talotekniikan palveluja: suunnittelua ja asennusta.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceEspoo, FinlandHQ checked Sep 16, 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 16, 2026
6Partial 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
7Indirect evidenceOrimattila, FinlandHQ checked Sep 16, 202611-5010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceMuhos, FinlandHQ checked Sep 16, 202651-2009 contacts →

Indirect evidence

“Olemme yksi suurimmista Suomessa aurinkovoimaa rakentavista yrityksistä.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceFinlandHQ checked Sep 16, 202651-2009 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceTampere, FinlandHQ checked Sep 16, 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 16, 2026
11Indirect evidenceRiihimäki, FinlandHQ checked Sep 16, 202611-505 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceVantaa, FinlandHQ checked Sep 16, 20261-104 contacts →

Indirect evidence

“Ajattelimme sähköntuotannon uusiksi”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceVantaa, FinlandHQ checked Sep 16, 20261-103 contacts →

Indirect 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 16, 2026
14Indirect evidenceSalo, FinlandHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceSastamala, FinlandHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

“Cleaner Future Oy myy ja toimittaa avaimet käteen -periaatteella aurinkovoimaloita sekä yrityksille että yksityisille asiakkaille.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceFinlandHQ checked Sep 16, 202611-503 contacts →

Indirect evidence

“Aurinkosähköteknologian kehittyminen on nostanut aurinkovoimalat varteenotettavaksi vaihtoehdoksi niin yrityksille kuin yksityisille.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceHelsingfors, FinlandHQ checked Sep 16, 202611-502 contacts →

Indirect evidence

“Me olemme juuri oikea kumppani aurinkosähkön ammattilaiselle!”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceHyvinkää, FinlandHQ checked Sep 16, 20261-102 contacts →

Indirect evidence

“Aurinkopaneelijärjestelmien asennus Sähköautojen latauspisteet Aurinkosähköjärjestelmien päivitys ja huolto Suunnittelu ja konsultointi Tarkastukset sekä kartoitukset…”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceLaitila, FinlandHQ checked Sep 16, 20261-102 contacts →

Indirect evidence

“Ammattitaidolla tarjoamme sekä kuluttaja- että yritysasiakkaillemme-Lämpöpumput -Aurinkovoimalat -Latausasemat -Sähköasennukset, urakoinnit ja saneeraukset -Alan tuotteet ja…”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceVaasa, FinlandHQ checked Sep 16, 20261-101 contacts →

Partial evidence

“Solar energy systems

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceVaasa, FinlandHQ checked Sep 16, 20261-101 contacts →

Indirect evidence

“Renewable energy specialist”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 23 of 42 photovoltaic system designing companies based in Finland

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Photovoltaic system designing companies based in Finland at a glance

As of Sep 16, 2026
54.3%Verified-email coverage
6.4Average contacts per company
1-10Median size (employees)
11.9%Largest-city concentration · Helsinki
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
11
51-200
5

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 42 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 system designing 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 system designing 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 system designing 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 system designing 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, 146 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 photovoltaic system designing 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 system designing companies are there based in Finland?

RevenueBase identified 42 photovoltaic system designing 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?

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

Which city has the most photovoltaic system designing companies?

Helsinki leads with 5 headquartered companies, followed by Espoo (4) and Vantaa (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 146 verified decision-maker contacts tracked across these 42 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.