Company lists · Data refreshed September 2026

Top 25 Consulting renewable energy companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 20,070 companies tracked

RevenueBase identified 20,070 consulting renewable energy companies worldwide as of September 2026 and tracks 180,962 professional contacts across them, including 47,362 with verified work emails. The United States is the largest market and London the largest hub.

This list covers consulting renewable energy 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 21, 2026. Country and city lists for consulting renewable energy 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 21, 2026 86% judged on-target in blind review

20,070Companies

180,962Contacts tracked

47,362Verified emails

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The 25 largest consulting renewable energy companies worldwide

Ranked by team size

Top 25 of 20,070 consulting renewable energy companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to consulting renewable energy 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	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 21, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 21, 2026
2	Waaree Group	Strong evidence	Mumbai, IndiaHQ checked Sep 21, 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 21, 2026
3	Vulcain Engineering Group	Strong evidence	Neuilly-sur-seine, FranceHQ checked Sep 21, 2026	5,001-10,000	1,496 contacts →
	Strong 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 21, 2026
4	Voltalia	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	1,001-5,000	1,436 contacts →
	Strong evidence “Voltalia is an international player in renewable energies.” Source: RevenueBase Database · checked Sep 21, 2026
5	Fichtner	Partial evidence	Stuttgart, GermanyHQ checked Sep 21, 2026	1,001-5,000	1,279 contacts →
	Partial 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 21, 2026
6	Inox Wind LTD	Partial evidence	Noida, IndiaHQ checked Sep 21, 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 21, 2026
7	Wanzek Construction, Inc., A Mastec Company	Strong evidence	Fargo, ND, United StatesHQ checked Sep 21, 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 21, 2026
8	Willdan	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	851 contacts →
	Partial 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 21, 2026
9	Juwi Group	Strong evidence	Wörrstadt, GermanyHQ checked Sep 21, 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 21, 2026
10	Cleanmax	Strong evidence	Mumbai, IndiaHQ checked Sep 21, 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 21, 2026
11	GES	Indirect evidence	Zamudio, SpainHQ checked Sep 21, 2026	501-1,000	702 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
12	Schwager	Indirect evidence	Santiago, ChileHQ checked Sep 21, 2026	501-1,000	671 contacts →
	Indirect evidence “Misión En todas sus áreas de negocios, SCHWAGER proveerá servicios y bienes de excelencia, ofreciendo, confianza y credibilidad a nuestros clientes, colaboradores y accionistas…” Source: RevenueBase Database · checked Sep 21, 2026
13	Vikran Engineering LTD	Strong evidence	Thane, IndiaHQ checked Sep 21, 2026	501-1,000	661 contacts →
	Strong evidence “M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…” Source: RevenueBase Database · checked Sep 21, 2026
14	WTS Energy	Partial evidence	The Hague, NetherlandsHQ checked Sep 21, 2026	1,001-5,000	651 contacts →
	Partial evidence “The Energy Transition brings new challenges and opportunities to all of us.” Source: RevenueBase Database · checked Sep 21, 2026
15	ACV Tecline Engenharia Ltda	Partial evidence	Curitiba, BrazilHQ checked Sep 21, 2026	501-1,000	557 contacts →
	Partial evidence “A ACV Tecline é uma empresa especializada na prestação de serviços voltados, principalmente, para empresas do setor de energia, com destaque para as áreas de petróleo e gás.” Source: RevenueBase Database · checked Sep 21, 2026
16	Fourth Partner Energy	Strong evidence	Hyderabad, IndiaHQ checked Sep 21, 2026	201-500	548 contacts →
	Strong evidence “Fourth Partner Energy is India’s leading Renewable Energy firm focusing on building and financing Solar, Wind, Hybrid and Battery Storage projects/ solutions for commercial…” Source: RevenueBase Database · checked Sep 21, 2026
17	Hero Future Energies	Strong evidence	New Delhi, IndiaHQ checked Sep 21, 2026	501-1,000	544 contacts →
	Strong evidence “Hero Future Energies (An ISO 27001:2022 Certified Company) is a leading global renewable energy company and part of the illustrious Hero Group, one of the most respected business…” Source: RevenueBase Database · checked Sep 21, 2026
18	Grupotec	Partial evidence	Valencia, SpainHQ checked Sep 21, 2026	501-1,000	538 contacts →
	Partial evidence “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Source: RevenueBase Database · checked Sep 21, 2026
19	IGNIS	Partial evidence	Madrid, SpainHQ checked Sep 21, 2026	501-1,000	533 contacts →
	Partial evidence “We are a vertically integrated energy company and offer tailored solutions for large consumers and for new energy demands, such as data centers.” Source: RevenueBase Database · checked Sep 21, 2026
20	AKUO	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	525 contacts →
	Indirect evidence “Akuo est spécialisé dans la mise en œuvre d’unités de production d’électricité à partir de ressources renouvelables, en particulier le solaire, l'éolien et le stockage.” Source: RevenueBase Database · checked Sep 21, 2026
21	Revergy	Partial evidence	Seville, SpainHQ checked Sep 21, 2026	501-1,000	502 contacts →
	Partial evidence “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Source: RevenueBase Database · checked Sep 21, 2026
22	Natural Power	Strong evidence	Castle Douglas, United KingdomHQ checked Sep 21, 2026	501-1,000	500 contacts →
	Strong evidence “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: RevenueBase Database · checked Sep 21, 2026
23	Elera Renováveis	Partial evidence	São Paulo, BrazilHQ checked Sep 21, 2026	501-1,000	495 contacts →
	Partial evidence “Nossa energia vem do sol, do vento e da água.” Source: RevenueBase Database · checked Sep 21, 2026
24	Amara Nzero Brasil	Partial evidence	Salvador, BrazilHQ checked Sep 21, 2026	501-1,000	493 contacts →
	Partial evidence “Somos uma empresa com uma grande experiência integral em energia sustentável fortemente comprometida com a Transição Energética.” Source: RevenueBase Database · checked Sep 21, 2026
25	Mitcon Consultancy And Engineering Services LTD	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	201-500	486 contacts →
	Indirect evidence “MITCON Consultancy & Engineering Services Limited, an ISO 9001:2015 certified company & NSE listed company, was established in 1982.” Source: RevenueBase Database · checked Sep 21, 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: consulting renewable energy 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 consulting renewable energy companies.
Partial evidence: Its own public description names part of consulting renewable energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name consulting renewable energy 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 20,070 consulting renewable energy companies worldwide

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Consulting renewable energy companies worldwide at a glance

As of Sep 21, 2026

26.2%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

12,126

11-50

6,022

51-200

1,382

201-500

289

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 consulting renewable energy 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: Every country. Country and city lists for consulting renewable energy companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “consulting renewable energy 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 consulting renewable energy 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 consulting renewable energy 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, 47,362 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 21, 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.

Consulting renewable energy companies by location

87 lists · largest first

Every Consulting renewable energy 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 consulting renewable energy 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 consulting renewable energy companies are there worldwide?

RevenueBase identified 20,070 consulting renewable energy 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?

Dalkia, headquartered in Saint-Andre-Lez-Lille, tops this list with the largest team on record.

Which country has the most consulting renewable energy companies?

The United States leads with 1,908 companies, followed by Brazil (1,279) and Germany (1,193). Every consulting renewable energy companies list by country and city is linked on this page.

Which city has the most consulting renewable energy companies?

London leads with 229 headquartered companies, followed by Madrid (211) and Paris (142).

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 47,362 verified decision-maker contacts tracked across these 20,070 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 21, 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.