Company lists · Data refreshed September 2026

Top 17 Renewable energy optimization software based in Finland

RevenueBase identified 35 renewable energy optimization software headquartered in Finland as of September 2026 and tracks 1,222 professional contacts across them, including 570 with verified work emails and 80 with mobile numbers. Helsinki is the largest hub.

This list covers renewable energy optimization software 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
35Companies
1,222Contacts tracked
570Verified emails
80Mobile numbers
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The 17 largest renewable energy optimization software based in Finland

Ranked by team size
Top 17 of 35 renewable energy optimization software based in Finland, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy optimization software: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Wärtsilä EnergyStrong evidence
Helsinki, FinlandHQ checked Sep 5, 202610001+940

“Wärtsilä leads the transition towards a 100% renewable energy future.”

Source: company website · checked Sep 5, 2026
2
IntergridPartial evidence
Helsinki, FinlandHQ checked Sep 5, 202611-5031

“Intergrid is a Helsinki-based technology company developing an Autopilot for industrial energy operations.”

Source: company website · checked Sep 5, 2026
3
1komma5 SuomiIndirect evidence
Espoo, FinlandHQ checked Sep 5, 202611-5028

“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: company website · checked Sep 5, 2026
4
Planora OYStrong evidence
Oulu, FinlandHQ checked Sep 5, 202611-5020

“Planora Oy was founded in 1987 and currently employs over 30 full-time energy engineers and consultants, environmental engineers, energy system designers, software developers and…”

Source: company website · checked Sep 5, 2026
5
Forus OYIndirect evidence
Helsinki, FinlandHQ checked Sep 5, 202611-5020

“Forus is a novel finance and sales company that develops services to stop climate-change profitably.”

Source: company website · checked Sep 5, 2026
6
Valoe OYJPartial evidence
Mikkeli, FinlandHQ checked Sep 5, 202611-508

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

Source: company website · checked Sep 5, 2026
7
Will & Must OYPartial evidence
Helsinki, FinlandHQ checked Sep 5, 20261-107

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

Source: company website · checked Sep 5, 2026
8
RALOSIndirect evidence
Tampere, FinlandHQ checked Sep 5, 202611-506

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

Source: company website · checked Sep 5, 2026
9
Westwind OYStrong evidence
Jyväskylä, FinlandHQ checked Sep 5, 20261-106

“WestWind build up renewable Energy Site Projects.”

Source: company website · checked Sep 5, 2026
10
WahlresStrong evidence
Vantaa, FinlandHQ checked Sep 5, 20261-103

“Wahlres Oy was founded in 2016 and aims to reduce the reliance of Finnish buildings on non-renewable energy sources.”

Source: company website · checked Sep 5, 2026
11
Ophi Technologies LTDIndirect evidence
Lahti, FinlandHQ checked Sep 5, 20261-103

“We are a traditional, but highly dynamic technology company with decades of combined experience in the fields of e.g.”

Source: company website · checked Sep 5, 2026
12
Renewe Group OY HelsinkiPartial evidence
Helsinki, FinlandHQ checked Sep 5, 20261-103

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

Source: company website · checked Sep 5, 2026
13
Salo Automation OYIndirect evidence
Salo, FinlandHQ checked Sep 5, 20261-103
Source: company website · checked Sep 5, 2026
14
Kerabit AurinkosähköIndirect evidence
FinlandHQ checked Sep 5, 202611-503

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

Source: company website · checked Sep 5, 2026
15
Sons Of Solar OYIndirect evidence
Turku, FinlandHQ checked Sep 5, 202611-503

“Sons of solar on aurinkoenergian edelläkävijä.”

Source: company website · checked Sep 5, 2026
16
Renetec OYPartial evidence
Helsinki, FinlandHQ checked Sep 5, 20261-103

“Renetec is an independent developer of industrial-scale solar energy capacity.”

Source: company website · checked Sep 5, 2026
17
ENIONPartial evidence
Tampere, FinlandHQ checked Sep 5, 20261-102

“Automating energy consumption in homes and real estate.”

Source: company website · checked Sep 5, 2026

Showing 17 of 35 renewable energy optimization software based in Finland

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Renewable energy optimization software based in Finland at a glance

As of Sep 5, 2026
1-10Median size (employees)
HelsinkiLargest hub · 8 HQs
80Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
22
11-50
11
201-500
1
10001+
1

Verified emails by last verification

0–30
533
31–60
33
61–90
0
90–180
0
180+
4

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 optimization software, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 optimization software”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among renewable energy optimization software, 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 an evidence 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, 570 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 5, 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

How many renewable energy optimization software are there based in Finland?

RevenueBase identified 35 renewable energy optimization software 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?

Wärtsilä Energy, headquartered in Helsinki, tops this list with the largest team on record.

Which city has the most renewable energy optimization software?

Helsinki leads with 8 headquartered companies, followed by Oulu (3) and Tampere (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 570 verified decision-maker contacts tracked across these 35 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 5, 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 SmartSearch, 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.