Company lists · Data refreshed September 2026

Top 25 Photovoltaic system designers based in Belgium

Name: Photovoltaic system designers based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 143 companies tracked

RevenueBase identified 143 photovoltaic system designers headquartered in Belgium as of September 2026 and tracks 901 professional contacts across them, including 393 with verified work emails. Liege is the largest hub.

This list covers photovoltaic system designers 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 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

143Companies

901Contacts tracked

393Verified emails

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The 25 largest photovoltaic system designers based in Belgium

Ranked by team size

Top 25 of 143 photovoltaic system designers based in Belgium, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to photovoltaic system designers: 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	Izen Energy Systems NV	Indirect evidence	Lille, BelgiumHQ checked Sep 20, 2026	51-200	52 contacts →
	Indirect evidence “Achieving the energy transition!” Source: RevenueBase Database · checked Sep 20, 2026
2	Insaver	Indirect evidence	Houthalen, BelgiumHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “At Insaver, we guide you every step of the way toward a low-carbon future.” Source: RevenueBase Database · checked Sep 20, 2026
3	Extrapower	Indirect evidence	Beernem, BelgiumHQ checked Sep 20, 2026	11-50	42 contacts →
	Indirect evidence “Als professionele partner ontwerpt, bouwt en onderhoudt Extrapower zonne-energie installaties op maat van KMO’s en industrie.” Source: RevenueBase Database · checked Sep 20, 2026
4	Virto Solar	Indirect evidence	Geel, BelgiumHQ checked Sep 20, 2026	11-50	42 contacts →
	Indirect 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 Sep 20, 2026
5	Enerdeal By EDP	Indirect evidence	Zaventem, BelgiumHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect 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 Sep 20, 2026
6	Siguesol	Strong evidence	Alleur, BelgiumHQ checked Sep 20, 2026	51-200	26 contacts →
	Strong evidence “Designer, manufacturer and installer of ground-mounted structures and photovoltaic shading systems.” Source: RevenueBase Database · checked Sep 20, 2026
7	Futech Bvba	Indirect evidence	Tessenderlo, BelgiumHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “Futech is een zonnepaneleninstallateur op de Belgische residentiële en industriële markt.” Source: RevenueBase Database · checked Sep 20, 2026
8	ESE	Indirect evidence	Veurne, BelgiumHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect 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 Sep 20, 2026
9	ENSYS	Indirect evidence	Kapellen, BelgiumHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect 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 Sep 20, 2026
10	Avasco Solar	Indirect evidence	Ieper, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Bij Avasco Solar zetten we al jaren de toon als dé Belgische specialist in montagesystemen voor platte daken.” Source: RevenueBase Database · checked Sep 20, 2026
11	Polarsun	Indirect evidence	Barchon, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Chez Polarsun, nous concevons, installons et assurons le suivi de solutions énergétiques durables pour les particuliers, les entreprises et les collectivités.” Source: RevenueBase Database · checked Sep 20, 2026
12	EGS Group	Indirect evidence	Maasmechelen, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “has been active in realizing sustainable projects in Belgium and our neighboring countries since 2012.” Source: RevenueBase Database · checked Sep 20, 2026
13	Ecostal Belgique	Partial evidence	Cerexhe-heuseux, BelgiumHQ checked Sep 20, 2026	1-10	18 contacts →
	Partial evidence “Ecostal is an importer and a wholesaler of green energy solutions and particularly photovoltaic products.” Source: RevenueBase Database · checked Sep 20, 2026
14	Green Energy 4 Seasons S.A	Partial evidence	Marche-en-famenne, BelgiumHQ checked Sep 20, 2026	11-50	17 contacts →
	Partial evidence “Green Energy 4 Seasons created in 2008 is the Walloon leader in photovoltaics.” Source: RevenueBase Database · checked Sep 20, 2026
15	Eoluz NV	Indirect evidence	Kapellen, BelgiumHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “Eoluz bouwt vandaag aan de energie van morgen.” Source: RevenueBase Database · checked Sep 20, 2026
16	SMA Solar Benelux	Indirect evidence	Mechelen, BelgiumHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “SMA Solar Technology is wereldmarktleider op het gebied van zonnestroomomvormers, een essentieel onderdeel van elke zonnestroominstallatie.” Source: RevenueBase Database · checked Sep 20, 2026
17	Vectura	Strong evidence	Flémalle, BelgiumHQ checked Sep 20, 2026	11-50	15 contacts →
	Strong evidence “Entreprise spécialisée dans l’installation de solutions énergétiques telles que les systèmes photovoltaïques, les bornes de recharges électriques résidentielles et industrielles…” Source: RevenueBase Database · checked Sep 20, 2026
18	Soltech NV	Partial evidence	Genk, BelgiumHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “For nearly 30 years, SOLTECH has been at the forefront of photovoltaic innovation in Belgium.” Source: RevenueBase Database · checked Sep 20, 2026
19	Jeroen Fiers BV	Indirect evidence	Ghent, BelgiumHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Jeroen Fiers BV was founded in 2011 in Ghent and started out as a construction company.” Source: RevenueBase Database · checked Sep 20, 2026
20	Ilumen	Indirect evidence	Tessenderlo, BelgiumHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Ilumen is een Belgisch ingenieursbureau, dat doorheen de jaren is uitgegroeid tot een verzameling van specialisten en experts binnen de sector van zonnepanelen.” Source: RevenueBase Database · checked Sep 20, 2026
21	Solar Assistance	Indirect evidence	Lummen, BelgiumHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “Welcome to Solar Assistance BV, a Lummen-based solar energy pioneer providing robust solutions tailored to the distinct needs of residential, commercial, and industrial clients.” Source: RevenueBase Database · checked Sep 20, 2026
22	Argona Team Green	Indirect evidence	Lokeren, BelgiumHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “Team Green bedekt al sinds 2006 Vlaamse daken met kwalitatief hoogstaande zonnepanelen.” Source: RevenueBase Database · checked Sep 20, 2026
23	Eco-Tronic	Indirect evidence	Roeselare, BelgiumHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence “Distributie van zonnepanelen, omvormers, energieopslag, ev-chargers en andere toebehoren voor PV installaties.” Source: RevenueBase Database · checked Sep 20, 2026
24	GPC Nederland	Indirect evidence	Tielt, BelgiumHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Hernieuwbare energie is dé oplossing voor een groenere toekomst.” Source: RevenueBase Database · checked Sep 20, 2026
25	Global Solar	Indirect evidence	Antwerpen, BelgiumHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Global Solar is een gespecialiseerd installateur van zonnepanelen.” Source: RevenueBase Database · checked Sep 20, 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: photovoltaic system designers. 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 photovoltaic system designers.
Partial evidence: Its own public description names part of photovoltaic system designers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name photovoltaic system designers. 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 143 photovoltaic system designers based in Belgium

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Photovoltaic system designers based in Belgium at a glance

As of Sep 20, 2026

43.6%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · Liege

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 143 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 designers, 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 “photovoltaic system designers”. 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 designers), 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 designers, 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, 393 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 system designers, 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 designers are there based in Belgium?

RevenueBase identified 143 photovoltaic system designers headquartered in Belgium 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?

Izen Energy Systems NV, headquartered in Lille, tops this list with the largest team on record.

Which city has the most photovoltaic system designers?

Liege leads with 4 headquartered companies, followed by Tessenderlo (4) and Zaventem (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 393 verified decision-maker contacts tracked across these 143 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.

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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.