Company lists · Data refreshed September 2026

Top 20 Grid connection contractors based in Finland

RevenueBase identified 34 grid connection contractors headquartered in Finland as of September 2026 and tracks 308 professional contacts across them, including 187 with verified work emails. Helsinki is the largest hub.

This list covers grid connection 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 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
34Companies
308Contacts tracked
187Verified emails
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The 20 largest grid connection contractors based in Finland

Ranked by team size
Top 20 of 34 grid connection contractors 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 grid connection 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
1Indirect evidencePorvoo, FinlandHQ checked Sep 16, 202651-20049 contacts →

Indirect evidence

“Insplan on kumppanisi vihreän siirtymän toteuttamisessa.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial 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
3Indirect 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
4Indirect evidenceOulu, FinlandHQ checked Sep 16, 202611-5019 contacts →

Indirect evidence

“CFE Finland is an independent expert company in energy infrastructure.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceVantaa, FinlandHQ checked Sep 16, 202651-20019 contacts →

Indirect evidence

“Tarjoamme sähköisen talotekniikan palveluja: suunnittelua ja asennusta.”

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 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
8Indirect 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
9Indirect 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
10Indirect evidenceHyvinkää, FinlandHQ checked Sep 16, 202611-5011 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceOulu, FinlandHQ checked Sep 16, 202611-5010 contacts →

Partial evidence

“Infra Builders is a Finnish construction company specializing in construction of wind farms and power grids.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceVasa, FinlandHQ checked Sep 16, 202651-20010 contacts →

Indirect evidence

“Vi är din partner i byggande, underhåll och reparation av eldistributionsnätet.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceJyväskylä, FinlandHQ checked Sep 16, 202611-507 contacts →

Indirect evidence

“Elektron E oy toimii teollisuudessa, sähköverkoissa ja sähköinfran projekteissa maanlaajuisesti urakoitsijana.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceMalax, FinlandHQ checked Sep 16, 202611-504 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 202611-503 contacts →

Indirect evidence

“Infratiera on erikoistunut vaativaan sähkörakentamiseen tuulivoima- ja sähköverkkoyhtiöille.”

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

Indirect evidence

“Tehokas ja moni­puolinen Voltium Oy on valtakunnallisesti toimiva sähköalan yritys, joka on erikoistunut moderneihin ja energiatehokkaisiin ratkaisuihin.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect 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
18Indirect 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
19Indirect evidenceHelsinki, FinlandHQ checked Sep 16, 202611-501 contacts →

Indirect evidence

“Sähköpalvelu Kipinä on sähkö, antenni, ja tietoverkkojen asentamiseen ja huoltoon erikoistunut palveluyritys, jonka toimialueena on pääosin Uudenmaan alue.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceRantasalmi, FinlandHQ checked Sep 16, 2026n/a1 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 20 of 34 grid connection contractors based in Finland

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Grid connection contractors based in Finland at a glance

As of Sep 16, 2026
60.7%Verified-email coverage
9.1Average contacts per company
11-50Median size (employees)
11.8%Largest-city concentration · Helsinki
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
12
51-200
8

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 34 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 grid connection 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 “grid connection 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 grid connection 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 grid connection 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, 187 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 grid connection 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 grid connection contractors are there based in Finland?

RevenueBase identified 34 grid connection 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?

Insplan OY, headquartered in Porvoo, tops this list with the largest team on record.

Which city has the most grid connection contractors?

Helsinki leads with 4 headquartered companies, followed by Jyvaskyla (3) and Oulu (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 187 verified decision-maker contacts tracked across these 34 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.