Company lists · Data refreshed September 2026

Top 25 Renewable energy consulting firms based in the Netherlands

Name: Renewable energy 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 5, 2026 610 companies tracked

RevenueBase identified 610 renewable energy consulting firms headquartered in the Netherlands as of September 2026 and tracks 5,766 professional contacts across them, including 2,523 with verified work emails and 409 with mobile numbers. Amsterdam is the largest hub.

This list covers renewable energy 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

610Companies

5,766Contacts tracked

2,523Verified emails

409Mobile numbers

Explore all 610 companies → Free signup · no credit card · 500 free credits

The 25 largest renewable energy consulting firms based in the Netherlands

Ranked by team size

Top 25 of 610 renewable energy consulting firms based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	WTS EnergyPartial evidence	The Hague, NetherlandsHQ checked Sep 5, 2026	1,001-5,000	651
	“The Energy Transition brings new challenges and opportunities to all of us.” Source: company website · checked Sep 5, 2026
2	Photon Energy GroupPartial evidence	Amsterdam, NetherlandsHQ checked Sep 5, 2026	201-500	407
	“Photon Energy Group is a group of companies with a shared mission: making clean energy, clean water and clean environments accessible to all.” Source: company website · checked Sep 5, 2026
3	GroendusIndirect evidence	Utrecht, NetherlandsHQ checked Sep 5, 2026	51-200	194
	“Aangenaam.” Source: company website · checked Sep 5, 2026
4	Adviesbureau DWAStrong evidence	Gouda, NetherlandsHQ checked Sep 5, 2026	51-200	157
	“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: company website · checked Sep 5, 2026
5	CENSOIndirect evidence	Nieuwegein, NetherlandsHQ checked Sep 5, 2026	51-200	116
	“Wij zijn dé duurzame adviseurs van zakelijk Nederland.” Source: company website · checked Sep 5, 2026
6	Green Giraffe AdvisoryIndirect evidence	Utrecht, NetherlandsHQ checked Sep 5, 2026	51-200	110
	“Green Giraffe Advisory is the pioneering advisory arm of the Green Giraffe Group, dedicated to pushing the next frontier in finance and climate.” Source: company website · checked Sep 5, 2026
7	Duurzaam Energie PerspectiefPartial evidence	Ah, NetherlandsHQ checked Sep 5, 2026	51-200	109
	“Wij zijn Duurzaam Energie Perspectief, dé technisch consultants op het gebied van energiesystemen.” Source: company website · checked Sep 5, 2026
8	VentolinesStrong evidence	Almere, NetherlandsHQ checked Sep 5, 2026	51-200	101
	“Ventolines is a leading agency in the dynamic renewable energy market with expertise in all phases of wind, solar and storage projects: development, contracting, legal services…” Source: company website · checked Sep 5, 2026
9	EcorusPartial evidence	Eindhoven, NetherlandsHQ checked Sep 5, 2026	51-200	89
	“Ecorus turns large-scale energy projects into predictable energy assets.” Source: company website · checked Sep 5, 2026
10	IF TechnologyPartial evidence	Arnhem, NetherlandsHQ checked Sep 5, 2026	51-200	80
	“At IF Technology we are committed to the transition from the use of fossil fuels to sustainable energy.” Source: company website · checked Sep 5, 2026
11	Fusie EngineersStrong evidence	Breda, NetherlandsHQ checked Sep 5, 2026	51-200	72
	“Fusie Engineers drives innovation in engineering across the energy, renewable and maritime sectors.” Source: company website · checked Sep 5, 2026
12	Anexo EnergyIndirect evidence	Poeldijk, NetherlandsHQ checked Sep 5, 2026	51-200	70
	“Omdat zien iets anders is als kijken” Wij willen een leefbare en duurzame samenleving voor iedereen en geloven in de kracht van innovatie en synergie om dit te bereiken.” Source: company website · checked Sep 5, 2026
13	ENVENPartial evidence	Rotterdam, NetherlandsHQ checked Sep 5, 2026	11-50	69
	“Wij zijn Enven, een gecertificeerd adviesbureau voor het leveren en registeren van energielabels en verduurzamingsadviezen.” Source: company website · checked Sep 5, 2026
14	EnergyprofsIndirect evidence	Herveld, NetherlandsHQ checked Sep 5, 2026	51-200	64
	“In ons werk stellen we mensen centraal.” Source: company website · checked Sep 5, 2026
15	Pondera A Company Of HaskoningStrong evidence	Arnhem, NetherlandsHQ checked Sep 5, 2026	51-200	62
	“As renewable energy project consultants, we provide market parties and governments with the expertise and tools required.” Source: company website · checked Sep 5, 2026
16	IVERPartial evidence	Lelystad, NetherlandsHQ checked Sep 5, 2026	51-200	48
	“Energy for tomorrow's planet.” Source: company website · checked Sep 5, 2026
17	OutsmartStrong evidence	Arnhem, NetherlandsHQ checked Sep 5, 2026	51-200	44
	“Maximizing your energy potential OutSmart is an independent team of 45 renewable energy specialists, dedicated to optimizing wind, solar, and storage projects.” Source: company website · checked Sep 5, 2026
18	Advance ConsultingPartial evidence	6711 Pm Ede, NetherlandsHQ checked Sep 5, 2026	11-50	43
	“Advance Consulting is a specialized international consulting firm that works across the globe advising companies, public organisations and NGOs on private sector development, with…” Source: company website · checked Sep 5, 2026
19	DARELIndirect evidence	Rotterdam, NetherlandsHQ checked Sep 5, 2026	11-50	41
	“The clock is ticking.” Source: company website · checked Sep 5, 2026
20	NEW Energy SystemsPartial evidence	Schimmert, NetherlandsHQ checked Sep 5, 2026	51-200	40
	“New Energy Systems adviseert, ontwerpt, levert en installeert systemen voor de opwekking en het gebruik van duurzame energie in woon- en werkomgevingen.” Source: company website · checked Sep 5, 2026
21	EnergiepartnersPartial evidence	Utrecht, NetherlandsHQ checked Sep 5, 2026	11-50	40
	“De wereld verduurzamen, daar krijgen wij energie van.” Source: company website · checked Sep 5, 2026
22	PVO InternationalPartial evidence	Rosmalen, NetherlandsHQ checked Sep 5, 2026	51-200	40
	“We are PVO International, the leading procurement organization for all products related to solar energy systems.” Source: company website · checked Sep 5, 2026
23	Techniplan AdviseursPartial evidence	Rotterdam, NetherlandsHQ checked Sep 5, 2026	11-50	39
	“Ontdek Techniplan Adviseurs: dé pioniers die al sinds 1978 voorlopen in installaties, energie en milieu!” Source: company website · checked Sep 5, 2026
24	EnpronPartial evidence	Drachten, NetherlandsHQ checked Sep 5, 2026	11-50	36
	“Enpron realiseert een duurzame, betrouwbare en betaalbare energievoorziening voor bedrijven.” Source: company website · checked Sep 5, 2026
25	Enersea BVPartial evidence	Schiedam, NetherlandsHQ checked Sep 5, 2026	11-50	36
	“Enersea is a true offshore engineering specialist, offering consultancy, structural design services and production systems design.” Source: company website · checked Sep 5, 2026

Showing 25 of 610 renewable energy consulting firms based in the Netherlands

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Renewable energy consulting firms based in the Netherlands at a glance

As of Sep 5, 2026

1-10Median size (employees)

AmsterdamLargest hub · 35 HQs

409Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

413

11-50

148

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

2,380

31–60

127

61–90

90–180

180+

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 renewable energy consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “renewable energy consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable energy 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 an evidence 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, 2,523 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 5, 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.

Renewable energy consulting firms by metro

Renewable energy consulting firms in Amsterdam35

Frequently asked

How many renewable energy consulting firms are there based in the Netherlands?

RevenueBase identified 610 renewable energy 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?

WTS Energy, headquartered in The Hague, tops this list with the largest team on record.

Which city has the most renewable energy consulting firms?

Amsterdam leads with 35 headquartered companies, followed by Rotterdam (23) and Utrecht (18).

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 2,523 verified decision-maker contacts tracked across these 610 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 5, 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 SmartSearch, 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.