Company lists · Data verified August 2026

Top 25 Energy efficiency consulting firms based in Belgium

Name: Energy efficiency consulting firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 206 companies tracked

There are 206 energy efficiency consulting firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 1,874 professional contacts across them, including 623 with verified work emails and 44 with mobile numbers. Gent is the largest hub.

This list covers energy efficiency consulting firms headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

206Companies

1,874Contacts tracked

623Verified emails

44Mobile numbers

Unlock all 206 companies Free account · no credit card · 2 minutes

The 25 largest energy efficiency consulting firms based in Belgium

Ranked by team size

Top 25 of 206 energy efficiency consulting firms based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Smappee	Harelbeke	51-200	129	84
2	Reno Energy	Haren	51-200	105	17
3	E&c Consultants	Kortrijk	51-200	100	19
4	Deplasse	Watermael-Boitsfort	51-200	68	44
5	Luminus Solutions	Hoegaarden	11-50	61	36
6	CES Group	Mons	51-200	54	2
7	Broptimize Energy	Remicourt	51-200	51	35
8	AYA	Etterbeek Brussels	11-50	46	34
9	MK Engineering	Bruxelles	11-50	35	13
10	Bureau D'études A Concept	Liege	11-50	34	17
11	Coretec Energy	Angleur	11-50	26	9
12	Delpower	n/a	11-50	24	22
13	Ecopuur	Drongen	11-50	23	16
14	Soltis	Evere Brussels	11-50	23	6
15	Istema NV	Gent	11-50	21	12
16	cozie.be	Genval	51-200	21	1
17	Cenergie	Antwerpen	11-50	20	9
18	ODOT	Schoten	11-50	20	5
19	Trinergy	n/a	11-50	19	7
20	EMAZE	Gent	11-50	17	12
21	Alfasun	Gent	11-50	17	7
22	Peritas	Brussels	11-50	17	2
23	Wattson NV	Ghent	11-50	16	10
24	Dnergy	n/a	11-50	16	9
25	Matriciel	Louvain-La-Neuve	11-50	15	10

Showing 25 of 206 energy efficiency consulting firms based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 623 reachable decision-makers.

Free account · no credit card

See all 206 companies

Energy efficiency consulting firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

GentLargest hub · 8 HQs

44Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

147

11-50

51-200

201-500

Energy efficiency consulting firms by metro

Metro	Companies
Energy efficiency consulting firms in Gent	8
Energy efficiency consulting firms in Brussels	8
Energy efficiency consulting firms in Liege	7
Energy efficiency consulting firms in Mechelen	6
Energy efficiency consulting firms in Bruxelles	4
Energy efficiency consulting firms in Ghent	3
Energy efficiency consulting firms in Antwerpen	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “energy efficiency consulting firms”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many energy efficiency consulting firms are there based in Belgium?

There are 206 energy efficiency consulting firms headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Smappee, headquartered in Harelbeke, tops this list with the largest team on record.

Which city has the most energy efficiency consulting firms?

Gent leads with 8 headquartered companies, followed by Brussels (8) and Liege (7).

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 623 verified decision-maker contacts tracked across these 206 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 206 energy efficiency consulting firms based in Belgium. Start with a free account, no credit card.

Get the full list

Related lists

Energy efficiency consulting firms by geography

Browse the directory

Browse: Companies home · All Belgium lists · All Energy efficiency consulting firms lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.