Company lists · Data refreshed September 2026

Top 25 Renewable energy consultancy companies worldwide

Name: Renewable energy consultancy companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 26,341 companies tracked

RevenueBase identified 26,341 renewable energy consultancy companies worldwide as of September 2026 and tracks 359,314 professional contacts across them, including 105,538 with verified work emails and 28,043 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers renewable energy consultancy companies worldwide, 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 5, 2026. Country and city lists for renewable energy consultancy companies follow the table.

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 5, 2026 86% judged on-target in blind review

26,341Companies

359,314Contacts tracked

105,538Verified emails

28,043Mobile numbers

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The 25 largest renewable energy consultancy companies worldwide

Ranked by team size

Top 25 of 26,341 renewable energy consultancy companies worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy consultancy companies: 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	Worley	Partial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	10001+	34,763 contacts →
	Partial evidence “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Source: RevenueBase Database · checked Sep 5, 2026
2	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 5, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 5, 2026
3	Ørsted	Strong evidence	Fredericia, United StatesHQ checked Sep 5, 2026	5,001-10,000	7,538 contacts →
	Strong evidence “Ørsted is the global leader in offshore wind power and is one of the largest renewable energy companies in the world.” Source: RevenueBase Database · checked Sep 5, 2026
4	EDP	Indirect evidence	Lisbon, PortugalHQ checked Sep 5, 2026	10001+	6,435 contacts →
	Indirect evidence “Our story began 50 years ago.” Source: RevenueBase Database · checked Sep 5, 2026
5	FTI	Strong evidence	Menasha, WI, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,741 contacts →
	Strong evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 5, 2026
6	Waaree Group	Strong evidence	Mumbai, IndiaHQ checked Sep 5, 2026	5,001-10,000	2,264 contacts →
	Strong evidence “Founded in 1990, Waaree Energies Limited is India’s leading renewable energy company, driving the global transition to clean power.” Source: RevenueBase Database · checked Sep 5, 2026
7	Semco Maritime	Strong evidence	Esbjerg, DenmarkHQ checked Sep 5, 2026	1,001-5,000	1,947 contacts →
	Strong evidence “To fulfil the vision of a fossil-free future, we need conventional and renewable energy sources to coexist effectively until the day when renewables can fully keep the world…” Source: RevenueBase Database · checked Sep 5, 2026
8	Westwood Professional Services	Indirect evidence	Plano, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,661 contacts →
	Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 5, 2026
9	Vulcain Engineering Group	Partial evidence	Neuilly-sur-seine, FranceHQ checked Sep 5, 2026	5,001-10,000	1,496 contacts →
	Partial evidence “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Source: RevenueBase Database · checked Sep 5, 2026
10	Voltalia	Strong evidence	Paris, FranceHQ checked Sep 5, 2026	1,001-5,000	1,436 contacts →
	Strong evidence “Voltalia is an international player in renewable energies.” Source: RevenueBase Database · checked Sep 5, 2026
11	Partner Engineering & Science, INC	Indirect evidence	Torrance, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,358 contacts →
	Indirect evidence “Partner Assessment Corp.” Source: RevenueBase Database · checked Sep 5, 2026
12	Fichtner	Strong evidence	Stuttgart, GermanyHQ checked Sep 5, 2026	1,001-5,000	1,279 contacts →
	Strong evidence “As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…” Source: RevenueBase Database · checked Sep 5, 2026
13	SAEL	Strong evidence	New Delhi, IndiaHQ checked Sep 5, 2026	1,001-5,000	1,212 contacts →
	Strong evidence “SAEL Industries Limited, is a leading Indian renewable energy company specializing in solar and waste-to-energy projects, committed to fostering green assets that contribute to…” Source: RevenueBase Database · checked Sep 5, 2026
14	Auren Energia	Strong evidence	Sao Paulo, BrazilHQ checked Sep 5, 2026	1,001-5,000	1,095 contacts →
	Strong evidence “Auren Energia (AURE3) is Brazil's third largest energy producer and a leading energy trader in the Brazilian market, specializing in 100% renewable energy.” Source: RevenueBase Database · checked Sep 5, 2026
15	Barr Engineering CO	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 5, 2026
16	Penspen	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	1,007 contacts →
	Partial evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
17	CTG Brasil	Partial evidence	Sao Paulo, BrazilHQ checked Sep 5, 2026	501-1,000	988 contacts →
	Partial evidence “Na CTG Brasil, trabalhamos por um único propósito: desenvolver o mundo com energia limpa em larga escala.” Source: RevenueBase Database · checked Sep 5, 2026
18	Inox Wind LTD	Partial evidence	Noida, IndiaHQ checked Sep 5, 2026	1,001-5,000	952 contacts →
	Partial evidence “Inox Wind is India’s leading wind energy solutions provider, offering comprehensive services from concept to commissioning and Operations & Maintenance (O&M).” Source: RevenueBase Database · checked Sep 5, 2026
19	Wanzek Construction, Inc., A Mastec Company	Strong evidence	Fargo, ND, United StatesHQ checked Sep 5, 2026	1,001-5,000	933 contacts →
	Strong evidence “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Source: RevenueBase Database · checked Sep 5, 2026
20	Willdan	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	851 contacts →
	Indirect evidence “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Source: RevenueBase Database · checked Sep 5, 2026
21	ABO Energy	Strong evidence	Wiesbaden, GermanyHQ checked Sep 5, 2026	1,001-5,000	785 contacts →
	Strong evidence “Founded in 1996, ABO Energy (fomerly known as ABO Wind) is among Europe’s leading developers of renewable energy projects.” Source: RevenueBase Database · checked Sep 5, 2026
22	Juwi Group	Strong evidence	Wörrstadt, GermanyHQ checked Sep 5, 2026	1,001-5,000	785 contacts →
	Strong evidence “For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…” Source: RevenueBase Database · checked Sep 5, 2026
23	NWG S.P.A	Indirect evidence	Prato, ItalyHQ checked Sep 5, 2026	n/a	766 contacts →
	Indirect evidence “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Source: RevenueBase Database · checked Sep 5, 2026
24	Hydro Tasmania	Strong evidence	Hobart, AustraliaHQ checked Sep 5, 2026	1,001-5,000	765 contacts →
	Strong evidence “At Hydro Tasmania, we’re leaders in renewable energy, backed by our 100+ year legacy of hydropower.” Source: RevenueBase Database · checked Sep 5, 2026
25	Cleanmax	Strong evidence	Mumbai, IndiaHQ checked Sep 5, 2026	201-500	735 contacts →
	Strong evidence “CleanMax is India’s largest commercial and industrial (“C&I”) renewable energy provider with 3 GW of operational, owned and managed capacity.” Source: RevenueBase Database · checked Sep 5, 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: renewable energy consultancy companies. 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 renewable energy consultancy companies.
Partial evidence: Its own public description names part of renewable energy consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy consultancy companies. 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 26,341 renewable energy consultancy companies worldwide

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Renewable energy consultancy companies worldwide at a glance

As of Sep 5, 2026

29.4%Verified-email coverage

7.8%Mobile-number coverage

13.6Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

15,107

11-50

8,316

51-200

2,045

201-500

461

501-1,000

154

1,001-5,000

107

5,001-10,000

10001+

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 consultancy companies, 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.
Coverage: 62 countries, largest first: the United States, the United Kingdom, Brazil, Germany, France, Spain, India, Italy, Türkiye, Australia and 52 more. Country and city lists for renewable energy consultancy companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “renewable energy consultancy companies”. 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 renewable energy consultancy companies), 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 renewable energy consultancy companies, and records with no verified work email.
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, 105,538 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 between September 5, 2026 and September 14, 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 consultancy companies by location

146 lists · largest first

Every Renewable energy consultancy companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 renewable energy consultancy companies, 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 renewable energy consultancy companies are there worldwide?

RevenueBase identified 26,341 renewable energy consultancy companies worldwide 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?

Worley, headquartered in Sydney, tops this list with the largest team on record.

Which country has the most renewable energy consultancy companies?

The United States leads with 2,669 companies, followed by the United Kingdom (2,362) and Brazil (2,139). Every renewable energy consultancy companies list by country and city is linked on this page.

Which city has the most renewable energy consultancy companies?

London leads with 424 headquartered companies, followed by Madrid (311) and Sao Paulo (251).

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 105,538 verified decision-maker contacts tracked across these 26,341 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 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.