Company lists · Data refreshed September 2026

Top 25 Alternative energy developers worldwide

Name: Alternative energy developers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 28,024 companies tracked

RevenueBase identified 28,024 alternative energy developers worldwide as of September 2026 and tracks 689,163 professional contacts across them, including 195,231 with verified work emails. The United States is the largest market and London the largest hub.

This list covers alternative energy developers 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 30, 2026. Country and city lists for alternative energy developers 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 30, 2026 86% judged on-target in blind review

28,024Companies

689,163Contacts tracked

195,231Verified emails

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The 25 largest alternative energy developers worldwide

Ranked by team size

Top 25 of 28,024 alternative energy developers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to alternative energy developers: 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 30, 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 30, 2026
2	Vestas	Partial evidence	Aarhus, DenmarkHQ checked Sep 30, 2026	10001+	27,085 contacts →
	Partial evidence “Vestas is the energy industry’s global partner on sustainable energy solutions.” Source: RevenueBase Database · checked Sep 30, 2026
3	Acciona	Indirect evidence	Madrid, SpainHQ checked Sep 30, 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 30, 2026
4	Siemens Gamesa	Partial evidence	Zamudio, SpainHQ checked Sep 30, 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 30, 2026
5	RWE	Partial evidence	Essen, GermanyHQ checked Sep 30, 2026	10001+	11,181 contacts →
	Partial evidence “RWE is leading the way to a modern energy world.” Source: RevenueBase Database · checked Sep 30, 2026
6	Constellation	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 30, 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 30, 2026
7	Sunrun	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 30, 2026	10001+	7,974 contacts →
	Partial evidence “Life runs on clean energy.” Source: RevenueBase Database · checked Sep 30, 2026
8	Ørsted	Partial evidence	Fredericia, United StatesHQ checked Sep 30, 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 30, 2026
9	Suzlon Group	Partial evidence	Pune, IndiaHQ checked Sep 30, 2026	5,001-10,000	7,141 contacts →
	Partial 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 30, 2026
10	KENT	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 30, 2026	10001+	7,045 contacts →
	Indirect evidence “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Source: RevenueBase Database · checked Sep 30, 2026
11	EDP	Indirect evidence	Lisbon, PortugalHQ checked Sep 30, 2026	10001+	6,435 contacts →
	Indirect evidence “Our story began 50 years ago.” Source: RevenueBase Database · checked Sep 30, 2026
12	Alfanar	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 30, 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 30, 2026
13	Enel Green Power	Partial evidence	Rome, ItalyHQ checked Sep 30, 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 30, 2026
14	GALP	Partial evidence	Alcântara, PortugalHQ checked Sep 30, 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 30, 2026
15	RENEW	Partial evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	1,001-5,000	4,340 contacts →
	Partial evidence “ReNew is a leading decarbonisation solutions provider and the first Indian clean energy company to list on Nasdaq (Nasdaq: RNW).” Source: RevenueBase Database · checked Sep 30, 2026
16	Octopus Energy	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	3,989 contacts →
	Partial evidence “We're on a mission to make a big green dent in the universe by building a truly sustainable energy system globally.” Source: RevenueBase Database · checked Sep 30, 2026
17	RES	Partial evidence	Kings Langley, United KingdomHQ checked Sep 30, 2026	1,001-5,000	3,721 contacts →
	Partial evidence “RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, green hydrogen, transmission, and…” Source: RevenueBase Database · checked Sep 30, 2026
18	Luminous Power Technologies P LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	5,001-10,000	3,713 contacts →
	Indirect evidence “Powering Progress, Lighting Lives!” Source: RevenueBase Database · checked Sep 30, 2026
19	IDEX	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 30, 2026	5,001-10,000	3,353 contacts →
	Indirect evidence “Fondé en France en 1963, le groupe IDEX, fort de près de 6 500 collaborateurs, développe, conçoit, finance, construit et exploite des infrastructures énergétiques locales et…” Source: RevenueBase Database · checked Sep 30, 2026
20	ENPAL	Partial evidence	Berlin, GermanyHQ checked Sep 30, 2026	5,001-10,000	3,242 contacts →
	Partial evidence “Enpal is Europe's leading new energy company.” Source: RevenueBase Database · checked Sep 30, 2026
21	Adani Green Energy LTD	Partial evidence	United StatesHQ checked Sep 30, 2026	1,001-5,000	3,017 contacts →
	Partial evidence “Adani Green Energy Limited (AGEL) is India’s largest renewable energy company playing a vital role in enabling the clean energy transition.” Source: RevenueBase Database · checked Sep 30, 2026
22	FTI	Partial evidence	Menasha, WI, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,741 contacts →
	Partial evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 30, 2026
23	Tata Power Renewable Energy Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 30, 2026	501-1,000	2,660 contacts →
	Partial evidence “Tata Power Renewable Energy Limited (TPREL) is one of India’s leading renewable energy companies, driving the transition towards a cleaner, more resilient and sustainable energy…” Source: RevenueBase Database · checked Sep 30, 2026
24	Greenko Group	Partial evidence	Hyderabad, IndiaHQ checked Sep 30, 2026	1,001-5,000	2,578 contacts →
	Partial evidence “Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…” Source: RevenueBase Database · checked Sep 30, 2026
25	Invenergy	Partial evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,408 contacts →
	Partial evidence “Invenergy is North America’s largest privately held developer, owner, and operator of innovative, reliable power infrastructure.” Source: RevenueBase Database · checked Sep 30, 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: alternative energy developers. 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 alternative energy developers.
Partial evidence: Its own public description names part of alternative energy developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alternative energy developers. 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 28,024 alternative energy developers worldwide

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Alternative energy developers worldwide at a glance

As of Sep 30, 2026

28.3%Verified-email coverage

24.6Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

12,440

11-50

10,605

51-200

3,359

201-500

910

501-1,000

299

1,001-5,000

208

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 alternative energy developers, 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 alternative energy developers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “alternative energy developers”. 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 alternative energy developers), 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 alternative energy developers, 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, 195,231 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 30, 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.

Alternative energy developers by location

142 lists · largest first

Every Alternative energy developers 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 alternative energy developers, 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 alternative energy developers are there worldwide?

RevenueBase identified 28,024 alternative energy developers 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 alternative energy developers?

The United States leads with 3,557 companies, followed by India (2,298) and Brazil (2,126). Every alternative energy developers list by country and city is linked on this page.

Which city has the most alternative energy developers?

London leads with 276 headquartered companies, followed by Madrid (181) and Lahore (171).

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 195,231 verified decision-maker contacts tracked across these 28,024 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 30, 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.