Company lists · Data refreshed September 2026

Top 25 Off-grid energy system providers based in Belgium

Name: Off-grid energy system providers based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 143 companies tracked

RevenueBase identified 143 off-grid energy system providers headquartered in Belgium as of September 2026 and tracks 1,299 professional contacts across them, including 590 with verified work emails. Liege is the largest hub.

This list covers off-grid energy system providers 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 17, 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 17, 2026 86% judged on-target in blind review

143Companies

1,299Contacts tracked

590Verified emails

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The 25 largest off-grid energy system providers based in Belgium

Ranked by team size

Top 25 of 143 off-grid energy system providers based in Belgium, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to off-grid energy system providers: 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	Energyvision	Partial evidence	Ghent, BelgiumHQ checked Sep 17, 2026	201-500	186 contacts →
	Partial evidence “At EnergyVision, we are committed to creating a better world by making green energy accessible to everyone.” Source: RevenueBase Database · checked Sep 17, 2026
2	Opteco	Indirect evidence	Zonhoven, BelgiumHQ checked Sep 17, 2026	11-50	58 contacts →
	Indirect evidence “Met een ervaring van meer dan installaties heeft het management van Opteco de nodige kennis in huis om uw project te realiseren.” Source: RevenueBase Database · checked Sep 17, 2026
3	YUSO	Partial evidence	Waregem, BelgiumHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial evidence “Yuso is an energy supplier with a strong affinity for Renewable Energy Sources (RES).” Source: RevenueBase Database · checked Sep 17, 2026
4	Energyking	Partial evidence	Herent, BelgiumHQ checked Sep 17, 2026	51-200	53 contacts →
	Partial evidence “EnergyKing werd in 2013 opgericht door twee ingenieurs: Lucas & Wiet.” Source: RevenueBase Database · checked Sep 17, 2026
5	Linea Trovata Group	Indirect evidence	Lokeren, BelgiumHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “Zonnepanelen, batterijen, laadinfrastructuur slimme sturingen en warmte- en koeloplossingen?” Source: RevenueBase Database · checked Sep 17, 2026
6	Insaver	Indirect evidence	Houthalen, BelgiumHQ checked Sep 17, 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 17, 2026
7	Extrapower	Partial evidence	Beernem, BelgiumHQ checked Sep 17, 2026	11-50	42 contacts →
	Partial evidence “Als professionele partner ontwerpt, bouwt en onderhoudt Extrapower zonne-energie installaties op maat van KMO’s en industrie.” Source: RevenueBase Database · checked Sep 17, 2026
8	Enerdeal By EDP	Partial evidence	Zaventem, BelgiumHQ checked Sep 17, 2026	11-50	33 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 Sep 17, 2026
9	octave.energy	Strong evidence	Mechelen, BelgiumHQ checked Sep 17, 2026	11-50	27 contacts →
	Strong evidence “Power Your Business \| Cutting Edge Energy Management and Storage Systems” Source: RevenueBase Database · checked Sep 17, 2026
10	Aatechnics NV	Indirect evidence	Gent, BelgiumHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Bij AAtechnics begrijpen we dat overstappen naar een CO2- neutraal bedrijfsmodel meer is dan alleen een milieuvriendelijke keuze - het is een strategische zet voor de toekomst.” Source: RevenueBase Database · checked Sep 17, 2026
11	ENSYS	Partial evidence	Kapellen, BelgiumHQ checked Sep 17, 2026	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 Sep 17, 2026
12	Polarsun	Indirect evidence	Barchon, BelgiumHQ checked Sep 17, 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 17, 2026
13	EGS Group	Indirect evidence	Maasmechelen, BelgiumHQ checked Sep 17, 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 17, 2026
14	Go-Solar By D'ieteren	Indirect evidence	Waasmunster, BelgiumHQ checked Sep 17, 2026	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 Sep 17, 2026
15	Bright Energy	Partial evidence	Gent, BelgiumHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “Bright Energy offers renewable energy for construction sites.” Source: RevenueBase Database · checked Sep 17, 2026
16	Eoluz NV	Partial evidence	Kapellen, BelgiumHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “Eoluz bouwt vandaag aan de energie van morgen.” Source: RevenueBase Database · checked Sep 17, 2026
17	Posetron	Indirect evidence	Genk, BelgiumHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “At POSETRON, we help you make your business sustainable.” Source: RevenueBase Database · checked Sep 17, 2026
18	Energie	Partial evidence	Gierle, BelgiumHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Energie+\| Duurzame Energieoplossingen Bij Energie+ leveren we duurzame energieoplossingen voor bedrijven en particulieren.” Source: RevenueBase Database · checked Sep 17, 2026
19	FRAX	Partial evidence	Gierle, BelgiumHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Als groothandel en innovator leveren wij snel complete plug-and-play energiesystemen, ontworpen om de installatie zo eenvoudig mogelijk te maken.” Source: RevenueBase Database · checked Sep 17, 2026
20	Revolta	Partial evidence	Brussels, BelgiumHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “All the future of energy.” Source: RevenueBase Database · checked Sep 17, 2026
21	Proenergy	Partial evidence	Ruiselede, BelgiumHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Proenergy is een bedrijf dat in 2010 werd opgericht door Steven Roels, gedreven door een grote passie voor groene energie-installaties zoals zonnepanelen, warmtepompen…” Source: RevenueBase Database · checked Sep 17, 2026
22	Neargrid Solutions	Strong evidence	Zele, BelgiumHQ checked Sep 17, 2026	11-50	10 contacts →
	Strong evidence “We replace diesel generators on construction sites with clean, battery-powered systems, reliable, silent, and grid-friendly.” Source: RevenueBase Database · checked Sep 17, 2026
23	Advenso	Partial evidence	Zedelgem, BelgiumHQ checked Sep 17, 2026	51-200	10 contacts →
	Partial evidence “Advenso is gespecialiseerd in hernieuwbare energie.” Source: RevenueBase Database · checked Sep 17, 2026
24	Solar Assistance	Partial evidence	Lummen, BelgiumHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial 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 17, 2026
25	Argona Team Green	Indirect evidence	Lokeren, BelgiumHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Team Green bedekt al sinds 2006 Vlaamse daken met kwalitatief hoogstaande zonnepanelen.” Source: RevenueBase Database · checked Sep 17, 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: off-grid energy system providers. 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 off-grid energy system providers.
Partial evidence: Its own public description names part of off-grid energy system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name off-grid energy system providers. 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 off-grid energy system providers based in Belgium

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Off-grid energy system providers based in Belgium at a glance

As of Sep 17, 2026

45.4%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · Liege

Sep 17, 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 off-grid energy system providers, 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 “off-grid energy system providers”. 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 off-grid energy system providers), 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 off-grid energy system providers, 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, 590 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 17, 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 off-grid energy system providers, 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 off-grid energy system providers are there based in Belgium?

RevenueBase identified 143 off-grid energy system providers 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?

Energyvision, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most off-grid energy system providers?

Liege leads with 4 headquartered companies, followed by Gent (3) and Waregem (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 590 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 17, 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.