Company lists · Data refreshed September 2026

Top 25 Clean energy companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 20,995 companies tracked

RevenueBase identified 20,995 clean energy companies worldwide as of September 2026 and tracks 796,358 professional contacts across them, including 246,744 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers clean 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 16, 2026. Country and city lists for clean 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 16, 2026 86% judged on-target in blind review

20,995Companies

796,358Contacts tracked

246,744Verified emails

0Mobile numbers

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The 25 largest clean energy companies worldwide

Ranked by team size

Top 25 of 20,995 clean energy companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clean 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	EDF	Partial evidence	Paris, FranceHQ checked Sep 16, 2026	10001+	44,842 contacts →
	Partial evidence “Our raison d'être is to build a net zero energy future with electricity and innovative solutions and services, to help save the planet and drive wellbeing and economic development.” Source: RevenueBase Database · checked Sep 16, 2026
2	Dominion Energy	Partial evidence	Richmond, VA, United StatesHQ checked Sep 16, 2026	10001+	31,976 contacts →
	Partial evidence “Dominion Energy (NYSE: D), headquartered in Richmond, Va, provides regulated electricity service to 3.6 million homes and businesses in Virginia, North Carolina, and South…” Source: RevenueBase Database · checked Sep 16, 2026
3	GE Vernova	Partial evidence	Boston, MA, United StatesHQ checked Sep 16, 2026	10001+	29,528 contacts →
	Partial evidence “GE Vernova is a purpose-built energy technology company on a mission to electrify to thrive and decarbonize the world.” Source: RevenueBase Database · checked Sep 16, 2026
4	Acciona	Indirect evidence	Madrid, SpainHQ checked Sep 16, 2026	10001+	27,028 contacts →
	Indirect evidence “ACCIONA champions a different way of doing business: Business as Unusual, delivering benefits far beyond the corporate realm.” Source: RevenueBase Database · checked Sep 16, 2026
5	Siemens Gamesa	Partial evidence	Zamudio, SpainHQ checked Sep 16, 2026	10001+	18,693 contacts →
	Partial evidence “Siemens Gamesa is a global technology leader in the renewable energy industry - specifically in the development, manufacturing, installation and maintenance of wind turbines.” Source: RevenueBase Database · checked Sep 16, 2026
6	ENGIE	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	10001+	15,504 contacts →
	Indirect evidence “What if your next career adventure started with ENGIE?” Source: RevenueBase Database · checked Sep 16, 2026
7	RWE	Partial evidence	Essen, GermanyHQ checked Sep 16, 2026	10001+	11,181 contacts →
	Partial evidence “RWE is leading the way to a modern energy world.” Source: RevenueBase Database · checked Sep 16, 2026
8	Statoil	Indirect evidence	Stavanger, NorwayHQ checked Sep 16, 2026	10001+	9,977 contacts →
	Indirect evidence “Statoil was founded on the idea that industrial development undertaken by skillful people should create value for society.” Source: RevenueBase Database · checked Sep 16, 2026
9	Constellation	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 16, 2026	10001+	9,458 contacts →
	Partial evidence “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Source: RevenueBase Database · checked Sep 16, 2026
10	Tata Power	Indirect evidence	Mumbai, IndiaHQ checked Sep 16, 2026	10001+	9,414 contacts →
	Indirect evidence “Tata Power is one of India’s largest integrated power companies and together with its subsidiaries and jointly controlled entities, has an installed/managed capacity of 14,294 MW.” Source: RevenueBase Database · checked Sep 16, 2026
11	DTE Energy	Partial evidence	Detroit, MI, United StatesHQ checked Sep 16, 2026	10001+	9,087 contacts →
	Partial evidence “DTE is one of the largest Fortune 500 diversified energy companies, proudly serving Michigan for over a century.” Source: RevenueBase Database · checked Sep 16, 2026
12	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 16, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 16, 2026
13	EDF UK	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	10001+	8,188 contacts →
	Partial evidence “EDF is leading the charge towards An Electric Britain to help make energy more affordable and sustainable.” Source: RevenueBase Database · checked Sep 16, 2026
14	Sunrun	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	10001+	7,974 contacts →
	Strong evidence “Life runs on clean energy.” Source: RevenueBase Database · checked Sep 16, 2026
15	Iberdrola	Partial evidence	Bilbao, SpainHQ checked Sep 16, 2026	10001+	7,598 contacts →
	Partial evidence “With more than 180 years of history, Iberdrola is today a global energy leader, the leading wind power producer and one of the largest electricity companies in the world in terms…” Source: RevenueBase Database · checked Sep 16, 2026
16	Ørsted	Partial evidence	Fredericia, United StatesHQ checked Sep 16, 2026	5,001-10,000	7,538 contacts →
	Partial 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 16, 2026
17	Suzlon Group	Strong evidence	Pune, IndiaHQ checked Sep 16, 2026	5,001-10,000	7,141 contacts →
	Strong evidence “Suzlon is a global wind-first, full-stack clean energy solutions conglomerate with businesses spanning RE Technology (Wind, Solar, Storage), RE Development Company, RE Asset…” Source: RevenueBase Database · checked Sep 16, 2026
18	Nordex Group	Indirect evidence	Hamburg, GermanyHQ checked Sep 16, 2026	10001+	6,768 contacts →
	Indirect evidence “The development, manufacture, project management and servicing of wind turbines in the onshore segment has been the core competence and passion of the Nordex Group and its more…” Source: RevenueBase Database · checked Sep 16, 2026
19	SSE PLC	Strong evidence	Perth, United KingdomHQ checked Sep 16, 2026	10001+	6,505 contacts →
	Strong evidence “The UK & Ireland's clean energy champion.” Source: RevenueBase Database · checked Sep 16, 2026
20	EDP	Indirect evidence	Lisbon, PortugalHQ checked Sep 16, 2026	10001+	6,435 contacts →
	Indirect evidence “Our story began 50 years ago.” Source: RevenueBase Database · checked Sep 16, 2026
21	Alfanar	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 16, 2026	10001+	6,383 contacts →
	Partial evidence “alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Source: RevenueBase Database · checked Sep 16, 2026
22	Nextera Energy Resources	Partial evidence	Juno Beach, FL, United StatesHQ checked Sep 16, 2026	10001+	6,221 contacts →
	Partial evidence “NextEra Energy Resources, LLC, together with its affiliated entities,("NextEra Energy Resources") is one of the largest energy infrastructure companies in North America.” Source: RevenueBase Database · checked Sep 16, 2026
23	Enel Green Power	Partial evidence	Roma, ItalyHQ checked Sep 16, 2026	5,001-10,000	5,251 contacts →
	Partial evidence “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
24	GALP	Partial evidence	Alcântara, PortugalHQ checked Sep 16, 2026	5,001-10,000	4,960 contacts →
	Partial evidence “Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Source: RevenueBase Database · checked Sep 16, 2026
25	ATVOS	Partial evidence	São Paulo, BrazilHQ checked Sep 16, 2026	10001+	4,611 contacts →
	Partial evidence “Estamos juntos pelo propósito de liderar a transição energético para mover o mundo e transformar vidas.” Source: RevenueBase Database · checked Sep 16, 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: clean 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 clean energy companies.
Partial evidence: Its own public description names part of clean energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean 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 20,995 clean energy companies worldwide

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Clean energy companies worldwide at a glance

As of Sep 16, 2026

31.0%Verified-email coverage

37.9Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

9,045

11-50

7,910

51-200

2,656

201-500

715

501-1,000

272

1,001-5,000

209

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 clean 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: 59 countries, largest first: the United States, Brazil, India, the United Kingdom, Germany, Spain, Italy, Australia, France, Türkiye and 49 more. Country and city lists for clean energy companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “clean 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 clean 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 clean 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, 246,744 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 16, 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.

Clean energy companies by location

115 lists · largest first

Every Clean 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 clean 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 clean energy companies are there worldwide?

RevenueBase identified 20,995 clean 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?

EDF, headquartered in Paris, tops this list with the largest team on record.

Which country has the most clean energy companies?

The United States leads with 3,126 companies, followed by Brazil (2,003) and India (1,876). Every clean energy companies list by country and city is linked on this page.

Which city has the most clean energy companies?

London leads with 345 headquartered companies, followed by Madrid (199) and Sao Paulo (190).

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 246,744 verified decision-maker contacts tracked across these 20,995 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 16, 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.