Company lists · Data refreshed September 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 Data refreshed Sep 2, 2026 428 companies tracked

RevenueBase identified 428 energy efficiency consulting firms headquartered in the Netherlands as of September 2026 and 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 2, 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 Sep 2, 2026 86% judged on-target in blind review

428Companies

2,364Contacts tracked

1,104Verified emails

213Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

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 refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency consulting firms: 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	Adviesbureau DWA	Strong evidence	Rijssen, Netherlands	51-200	156 contacts →
	Strong evidence “DWA building services & energy consultants is a consultancy firm that offers research and consultancy services on the field of renewable energy and energy efficiency in the built…” Source: RevenueBase Database · checked Sep 2, 2026
2	Roodenburg Groep	Indirect evidence	Krimpen Aan Den Ijssel, Netherlands	51-200	121 contacts →
	Indirect evidence “Roodenburg •Is betrokken en ambitieus •Werkt innovatief •Levert maatwerk •Is onafhankelijk •Biedt altijd meerwaarde In het samenspel tussen gebruiker, eigenaar, aannemer en…” Source: RevenueBase Database · checked Sep 2, 2026
3	Petrogenium	Partial evidence	Amsterdam, Netherlands	201-500	79 contacts →
	Partial evidence “At Petrogenium, we help energy and chemical businesses operate smarter, cleaner, and more profitably: make the right products, run reliably, and grow margins : improve energy and…” Source: RevenueBase Database · checked Sep 2, 2026
4	ENVEN	Partial evidence	Rotterdam, Netherlands	11-50	70 contacts →
	Partial evidence “Wij zijn Enven, een gecertificeerd adviesbureau voor het leveren en registeren van energielabels en verduurzamingsadviezen.” Source: RevenueBase Database · checked Sep 2, 2026
5	VAN Hout Adviseurs EN Installateurs	Partial evidence	Veldhoven, Netherlands	51-200	63 contacts →
	Partial evidence “Van Hout loopt voorop op het gebied van werktuigbouwkundige installatietechniek en duurzame energie.” Source: RevenueBase Database · checked Sep 2, 2026
6	Vanbeek	Partial evidence	Arnhem, Netherlands	11-50	47 contacts →
	Partial evidence “Van Beek is al meer dan 30 jaar actief op het gebied van energiemanagement.” Source: RevenueBase Database · checked Sep 2, 2026
7	Energiepartners	Partial evidence	Bb, Netherlands	11-50	41 contacts →
	Partial evidence “De wereld verduurzamen, daar krijgen wij energie van.” Source: RevenueBase Database · checked Sep 2, 2026
8	NEW Energy Systems	Partial evidence	Schimmert, Netherlands	51-200	40 contacts →
	Partial evidence “New Energy Systems adviseert, ontwerpt, levert en installeert systemen voor de opwekking en het gebruik van duurzame energie in woon- en werkomgevingen.” Source: RevenueBase Database · checked Sep 2, 2026
9	Klimaatgarant	Partial evidence	Schiedam, Netherlands	51-200	40 contacts →
	Partial evidence “25 jaar gegarandeerd energieneutraal Klimaatgarant zorgt voor de best mogelijke energieprestatie van woningen.” Source: RevenueBase Database · checked Sep 2, 2026
10	Flexidao	Partial evidence	Amsterdam, Netherlands	11-50	38 contacts →
	Partial evidence “Built for corporate energy and sustainability teams, Flexidao combines powerful data collection, analytics, and expert advisory to optimize renewable energy contract performance…” Source: RevenueBase Database · checked Sep 2, 2026
11	Energiemissie	Partial evidence	Aw, Netherlands	11-50	34 contacts →
	Partial evidence “Energiemissie geeft multisite organisaties grip op hun energie.” Source: RevenueBase Database · checked Sep 2, 2026
12	Hellemans Consultancy	Partial evidence	Hoevelaken, Netherlands	11-50	31 contacts →
	Partial evidence “Energieadviesbureau Hellemans Consultancy Betrouwbaar en onafhankelijk Hellemans Consultancy is al sinds 1997 actief op de energiemarkt.” Source: RevenueBase Database · checked Sep 2, 2026
13	Blueterra Energy Experts	Partial evidence	Veenendaal, Netherlands	11-50	28 contacts →
	Partial evidence “BlueTerra Energy Experts is een specialistisch en onafhankelijk energieadviesbureau voor de industrie en grootzakelijke markt.” Source: RevenueBase Database · checked Sep 2, 2026
14	Ecofys	Partial evidence	Kl, Netherlands	51-200	27 contacts →
	Partial evidence “Ecofys, a Navigant company, is a leading international energy and climate consultancy focused on sustainable energy for everyone.” Source: RevenueBase Database · checked Sep 2, 2026
15	We-Boost	Indirect evidence	Utrecht, Netherlands	11-50	25 contacts →
	Indirect evidence “We-Boost maakt door middel van advies en slimme oplossingen de gebouwde omgeving duurzamer, efficiënter en innovatiever.” Source: RevenueBase Database · checked Sep 2, 2026
16	dle.energy	Partial evidence	Den Haag, Netherlands	11-50	25 contacts →
	Partial evidence “DLE biedt vastgoedbeheerders, investeerders en eigenaren van commercieel vastgoed een totaaloplossing om de energieprestaties van hun panden te optimaliseren.” Source: RevenueBase Database · checked Sep 2, 2026
17	Unica Energy Solutions	Partial evidence	Mt, Netherlands	51-200	24 contacts →
	Partial evidence “Unica Energy Solutions maakt de energietransitie waar!” Source: RevenueBase Database · checked Sep 2, 2026
18	W4y Adviseurs BV	Indirect evidence	Harderwijk, Netherlands	11-50	21 contacts →
	Indirect evidence “W4Y: Experts in Gebouwgebonden Installaties & Duurzaam Bouwen W4Y is een deskundig en onafhankelijk adviesbureau op het gebied van gebouw gebonden installaties en duurzaamheid.” Source: RevenueBase Database · checked Sep 2, 2026
19	Comfort-Isolatie B.V	Indirect evidence	Da, Netherlands	11-50	21 contacts →
	Indirect evidence “Comfort Isolatie is gespecialiseerd in het verduurzamen van woningen en bedrijfspanden met hoogwaardige isolatieoplossingen.” Source: RevenueBase Database · checked Sep 2, 2026
20	Beter Duurzaam BV	Indirect evidence	Vaassen, Netherlands	11-50	21 contacts →
	Indirect evidence “Beter Duurzaam is dé specialist en uw partner op het gebied van duurzame oplossingen.” Source: RevenueBase Database · checked Sep 2, 2026
21	Energy-Check	Partial evidence	Sv, Netherlands	11-50	20 contacts →
	Partial evidence “Efficiënt en duurzaam energie besparen?” Source: RevenueBase Database · checked Sep 2, 2026
22	Rg-Projecten	Partial evidence	Xc, Netherlands	11-50	20 contacts →
	Partial evidence “RG-projecten supports parties that deal with complex sustainable energy issues.” Source: RevenueBase Database · checked Sep 2, 2026
23	1energielabel B.V	Partial evidence	Em, Netherlands	51-200	19 contacts →
	Partial evidence “Wij zijn een jong- en snelgroeiend energielabel- en adviesbedrijf, dat zich volledig richt op het verduurzamen van vastgoed.” Source: RevenueBase Database · checked Sep 2, 2026
24	Energielive	Strong evidence	Amsterdam, Netherlands	11-50	18 contacts →
	Strong evidence “Founded in 2006, we are one of the Netherlands’ pioneering full-service energy consulting firms.” Source: RevenueBase Database · checked Sep 2, 2026
25	Enerdeco	Partial evidence	Ng, Netherlands	11-50	18 contacts →
	Partial evidence “Duurzaam bouwen en renoveren begint met energie-efficiëntie.” Source: RevenueBase Database · checked Sep 2, 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: energy efficiency consulting firms. 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 energy efficiency consulting firms.
Partial evidence: Its own public description names part of energy efficiency consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency consulting firms. 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 428 energy efficiency consulting firms based in the Netherlands

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,104 reachable decision-makers.

Free signup · no credit card

View the full list →

Energy efficiency consulting firms based in the Netherlands at a glance

As of Sep 2, 2026

46.7%Verified-email coverage

9.0%Mobile-number coverage

5.5Average contacts per company

1-10Median size (employees)

3.7%Largest-city concentration · Amsterdam

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

331

11-50

51-200

201-500

501-1,000

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 energy efficiency consulting firms, 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 the Netherlands whose own description of what they do matches “energy efficiency consulting firms”. 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 energy efficiency consulting firms), 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 energy efficiency consulting firms, and records with no verified work email. Companies headquartered outside Netherlands 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, 1,104 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 2, 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 energy efficiency consulting firms, 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 energy efficiency consulting firms are there based in the Netherlands?

RevenueBase identified 428 energy efficiency consulting firms headquartered in the Netherlands 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?

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 refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 2026.

Ready to reach these companies? Verified emails and direct dials for all 428 energy efficiency consulting firms based in the Netherlands. Start with a free account, no credit card.

Download this list →

Related lists

Energy efficiency consulting firms by geography

Browse the directory

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.