Company lists · Data refreshed August 2026

Top 25 Clean energy software companies based in Belgium

Name: Clean energy software companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 146 companies tracked

RevenueBase identified 146 clean energy software companies headquartered in Belgium as of August 2026 and tracks 1,940 professional contacts across them, including 900 with verified work emails and 64 with mobile numbers. Harelbeke is the largest hub.

This list covers clean energy software companies headquartered in Belgium, 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

146Companies

1,940Contacts tracked

900Verified emails

64Mobile numbers

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The 25 largest clean energy software companies based in Belgium

Ranked by team size

Top 25 of 146 clean energy software companies based in Belgium, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to clean energy software 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	3e	Partial evidence	Brussels, Belgium	51-200	250 contacts →
	Partial evidence “3E is a leading technology and SaaS company providing digital solutions and expert services that maximise the performance of renewable energy assets.” Source: RevenueBase Database · checked Aug 31, 2026
2	Smappee	Partial evidence	Harelbeke, Belgium	51-200	129 contacts →
	Partial evidence “Smappee is an award-winning global cleantech company that aims to save its customers energy and money by reducing energy consumption and improving energy efficiency.” Source: RevenueBase Database · checked Aug 31, 2026
3	Ecorus	Partial evidence	Hasselt, Belgium	51-200	93 contacts →
	Partial evidence “Ecorus turns large-scale energy projects into predictable energy assets.” Source: RevenueBase Database · checked Aug 31, 2026
4	Aspiravi	Partial evidence	Kortrijk, Belgium	51-200	80 contacts →
	Partial evidence “Since 2002, Aspiravi has been pioneering the energy transition Backed by 88 Belgian cities and municipalities, together with VEH, we combine strong local roots with the scale and…” Source: RevenueBase Database · checked Aug 31, 2026
5	YUSO	Partial evidence	Waregem, Belgium	11-50	56 contacts →
	Partial evidence “Yuso is an energy supplier with a strong affinity for Renewable Energy Sources (RES).” Source: RevenueBase Database · checked Aug 31, 2026
6	Energyking	Partial evidence	Belgium	51-200	53 contacts →
	Partial evidence “EnergyKing werd in 2013 opgericht door twee ingenieurs: Lucas & Wiet.” Source: RevenueBase Database · checked Aug 31, 2026
7	Perpetum Energy	Partial evidence	Belgium	11-50	53 contacts →
	Partial evidence “PerPetum helps businesses take control of their energy costs and carbon footprint.” Source: RevenueBase Database · checked Aug 31, 2026
8	Linea Trovata Group	Partial evidence	Ardooie, Belgium	51-200	48 contacts →
	Partial evidence “Duurzaam naar de laagste energiekost.” Source: RevenueBase Database · checked Aug 31, 2026
9	Insaver	Indirect evidence	Belgium	51-200	44 contacts →
	Indirect evidence “At Insaver, we guide you every step of the way toward a low-carbon future.” Source: RevenueBase Database · checked Aug 31, 2026
10	Dymotec	Indirect evidence	Olen, Belgium	11-50	44 contacts →
	Indirect evidence “WHEN POWER BECOMES SMART Whether we’re working on guarantee, realisation or optimisation projects, our experts create the best solution for you, from design to realisation.” Source: RevenueBase Database · checked Aug 31, 2026
11	Virto Solar	Partial evidence	Belgium	11-50	42 contacts →
	Partial evidence “Virto Solar: Redefining Software for Solar Engineering Founded in 2019, Virto Solar is a global leader in solar engineering software and PV design automation.” Source: RevenueBase Database · checked Aug 31, 2026
12	Frank Energie	Partial evidence	Antwerp, Belgium	11-50	34 contacts →
	Partial evidence “Frank is a digital energy company that offers dynamic energy contracts with 100% green energy to its customers in the Netherlands, Flanders and Spain.” Source: RevenueBase Database · checked Aug 31, 2026
13	XEMEX	Partial evidence	Schoten, Belgium	11-50	33 contacts →
	Partial evidence “Bij Xemex maken we energie slim.” Source: RevenueBase Database · checked Aug 31, 2026
14	Enerdeal By EDP	Partial evidence	Zaventem, Belgium	11-50	32 contacts →
	Partial evidence “Enerdeal by EDP supports industrial and public players in their energy transition, turning solar energy into a strategic lever for performance, sustainability and independence.” Source: RevenueBase Database · checked Aug 31, 2026
15	Lifepowr	Partial evidence	Belgium	11-50	31 contacts →
	Partial evidence “LIFEPOWR is at the forefront of transforming the energy landscape by orchestrating energy flows to balance the grid while unlocking the flexibility of thousands of decentralized…” Source: RevenueBase Database · checked Aug 31, 2026
16	ESE	Partial evidence	Veurne, Belgium	51-200	25 contacts →
	Partial evidence “Op maat van elke individuele klant werkt ESE de technisch optimale en meest economische oplossing uit voor hun specifieke energie problemen en dit steeds vanuit een ecologisch…” Source: RevenueBase Database · checked Aug 31, 2026
17	Knauf Energy Solutions	Partial evidence	Belgium	11-50	25 contacts →
	Partial evidence “Building the World’s Virtual Energy Infrastructure” Source: RevenueBase Database · checked Aug 31, 2026
18	Covolt	Partial evidence	Belgium	11-50	23 contacts →
	Partial evidence “Covolt is your independent Optimizer, Aggegator and Asset Manager for reneweable Energy Installations for Europe with offices in Netherlands and Belgium.” Source: RevenueBase Database · checked Aug 31, 2026
19	We Green Belgium	Indirect evidence	Zaventem, Belgium	11-50	23 contacts →
	Indirect evidence “We Green vise à réduire la dépendance de ses clients aux sources d'énergie non-durables afin de diminuer leurs émissions de carbone via des solutions énergétiques vertes et…” Source: RevenueBase Database · checked Aug 31, 2026
20	ENSYS	Partial evidence	Kapellen, Belgium	11-50	22 contacts →
	Partial evidence “As specialists in the field of renewable energy and energy efficiency, we offer unique proposals to both individuals and businesses.” Source: RevenueBase Database · checked Aug 31, 2026
21	beebop.ai	Indirect evidence	Belgium	11-50	22 contacts →
	Indirect evidence “Beebop builds the orchestration infrastructure layer for modern power systems.” Source: RevenueBase Database · checked Aug 31, 2026
22	Energis	Strong evidence	Belgium	11-50	21 contacts →
	Strong evidence “Energis is a European greentech software scale-up headquartered in Belgium.” Source: RevenueBase Database · checked Aug 31, 2026
23	cozie.be	Partial evidence	Genval, Belgium	51-200	21 contacts →
	Partial evidence “Cozie \| Durable Comfort Cozie is a vibrant company that works with ENGIE to combine the energy and dynamism of a start-up with the technical competence & long-term vision of an…” Source: RevenueBase Database · checked Aug 31, 2026
24	Go-Solar By D'ieteren	Indirect evidence	Brecht, Belgium	51-200	19 contacts →
	Indirect evidence “Bij Go-Solar by D'Ieteren gaan wij verder dan alleen de installatie van zonnepanelen.” Source: RevenueBase Database · checked Aug 31, 2026
25	Powernaut	Partial evidence	Ghent, Belgium	11-50	19 contacts →
	Partial evidence “We're building the next generation platform that turns everyday energy assets into tomorrow's power plants.” Source: RevenueBase Database · checked Aug 31, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: clean energy software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names clean energy software companies.
Partial evidence: Its own public description names part of clean energy software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean energy software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 146 clean energy software companies based in Belgium

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Clean energy software companies based in Belgium at a glance

As of Aug 31, 2026

46.4%Verified-email coverage

3.3%Mobile-number coverage

13.3Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Harelbeke

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 clean energy software 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 Belgium whose own description of what they do matches “clean energy software 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 clean energy software 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 clean energy software companies, and records with no verified work email. Companies headquartered outside Belgium 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, 900 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 August 31, 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 clean energy software 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 clean energy software companies are there based in Belgium?

RevenueBase identified 146 clean energy software companies headquartered in Belgium as of August 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?

3e, headquartered in Brussels, tops this list with the largest team on record.

Which city has the most clean energy software companies?

Harelbeke leads with 4 headquartered companies, followed by Antwerpen (4) and Brussels (4).

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 900 verified decision-maker contacts tracked across these 146 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.