Company lists · Data verified August 2026

Top 25 Energy efficiency consulting firms based in the Netherlands

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 428 companies tracked

There are 428 energy efficiency consulting firms headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 2,364 professional contacts across them, including 1,104 with verified work emails and 213 with mobile numbers. Amsterdam is the largest hub.

This list covers energy efficiency consulting firms headquartered in the Netherlands, 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.

428Companies

2,364Contacts tracked

1,104Verified emails

213Mobile numbers

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The 25 largest energy efficiency consulting firms based in the Netherlands

Ranked by team size

Top 25 of 428 energy efficiency consulting firms based in the Netherlands, 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	Adviesbureau DWA	Rijssen	51-200	156	98
2	Roodenburg Groep	Krimpen Aan Den Ijssel	51-200	121	90
3	Petrogenium	Amsterdam	201-500	79	53
4	ENVEN	Rotterdam	11-50	70	26
5	VAN Hout Adviseurs EN Installateurs	Veldhoven	51-200	63	40
6	Vanbeek	Arnhem	11-50	47	27
7	Energiepartners	Bb	11-50	41	18
8	NEW Energy Systems	Schimmert	51-200	40	27
9	Klimaatgarant	Schiedam	51-200	40	19
10	Flexidao	Amsterdam	11-50	38	19
11	Energiemissie	Aw	11-50	34	15
12	Hellemans Consultancy	Hoevelaken	11-50	31	17
13	Blueterra Energy Experts	Veenendaal	11-50	28	21
14	Ecofys	Kl	51-200	27	2
15	We-Boost	Utrecht	11-50	25	20
16	dle.energy	Den Haag	11-50	25	19
17	Unica Energy Solutions	Mt	51-200	24	13
18	W4y Adviseurs BV	Harderwijk	11-50	21	12
19	Comfort-Isolatie B.V	Da	11-50	21	6
20	Beter Duurzaam BV	Vaassen	11-50	21	2
21	Energy-Check	Sv	11-50	20	15
22	Rg-Projecten	Xc	11-50	20	11
23	1energielabel B.V	Em	51-200	19	9
24	Energielive	Amsterdam	11-50	18	14
25	Enerdeco	Ng	11-50	18	14

Showing 25 of 428 energy efficiency consulting firms based in the Netherlands

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Energy efficiency consulting firms based in the Netherlands at a glance

As of Aug 28, 2026

1-10Median size (employees)

AmsterdamLargest hub · 16 HQs

213Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

331

11-50

51-200

201-500

501-1,000

Energy efficiency consulting firms by metro

Metro	Companies
Energy efficiency consulting firms in Amsterdam	16
Energy efficiency consulting firms in Rotterdam	14
Energy efficiency consulting firms in Utrecht	11
Energy efficiency consulting firms in Eindhoven	9
Energy efficiency consulting firms in Delft	7
Energy efficiency consulting firms in Breda	6
Energy efficiency consulting firms in Den Haag	5

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 the Netherlands.
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 the Netherlands?

There are 428 energy efficiency consulting firms headquartered in the Netherlands as of August 2026 (RevenueBase).

What is the largest company on this list?

Adviesbureau DWA, headquartered in Rijssen, tops this list with the largest team on record.

Which city has the most energy efficiency consulting firms?

Amsterdam leads with 16 headquartered companies, followed by Rotterdam (14) and Utrecht (11).

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 1,104 verified decision-maker contacts tracked across these 428 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.

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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.