Company lists · Data refreshed September 2026

Top 25 Sustainable power generation companies worldwide

Name: Sustainable power generation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 12,514 companies tracked

RevenueBase identified 12,514 sustainable power generation companies worldwide as of September 2026 and tracks 567,727 professional contacts across them, including 171,456 with verified work emails. The United States is the largest market and London the largest hub.

This list covers sustainable power generation 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 22, 2026. Country and city lists for sustainable power generation 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 22, 2026 86% judged on-target in blind review

12,514Companies

567,727Contacts tracked

171,456Verified emails

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The 25 largest sustainable power generation companies worldwide

Ranked by team size

Top 25 of 12,514 sustainable power generation companies worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable power generation 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	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	10001+	44,842 contacts →
	Indirect 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 22, 2026
2	Dominion Energy	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 22, 2026	10001+	31,976 contacts →
	Indirect 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 22, 2026
3	Hydro Québec	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 22, 2026	10001+	14,673 contacts →
	Indirect evidence “Hydro-Québec produit, transporte et distribue de l'électricité.” Source: RevenueBase Database · checked Sep 22, 2026
4	RWE	Indirect evidence	Essen, GermanyHQ checked Sep 22, 2026	10001+	11,181 contacts →
	Indirect evidence “RWE is leading the way to a modern energy world.” Source: RevenueBase Database · checked Sep 22, 2026
5	Constellation	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 22, 2026	10001+	9,458 contacts →
	Indirect 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 22, 2026
6	Tata Power	Partial evidence	Mumbai, IndiaHQ checked Sep 22, 2026	10001+	9,414 contacts →
	Partial 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 22, 2026
7	Ontario Power Generation	Strong evidence	Toronto, ON, CanadaHQ checked Sep 22, 2026	5,001-10,000	8,955 contacts →
	Strong evidence “At Ontario Power Generation (OPG), our power is changing the world as we strive to electrify life in one generation.” Source: RevenueBase Database · checked Sep 22, 2026
8	EDF UK	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
9	Iberdrola	Partial evidence	Bilbao, SpainHQ checked Sep 22, 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 22, 2026
10	Ørsted	Partial evidence	Fredericia, United StatesHQ checked Sep 22, 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 22, 2026
11	Suzlon Group	Indirect evidence	Pune, IndiaHQ checked Sep 22, 2026	5,001-10,000	7,141 contacts →
	Indirect 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 22, 2026
12	EDP	Indirect evidence	Lisbon, PortugalHQ checked Sep 22, 2026	10001+	6,435 contacts →
	Indirect evidence “Our story began 50 years ago.” Source: RevenueBase Database · checked Sep 22, 2026
13	Alfanar	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 22, 2026	10001+	6,383 contacts →
	Indirect evidence “alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Source: RevenueBase Database · checked Sep 22, 2026
14	PLN Indonesia Power	Strong evidence	South Jakarta, IndonesiaHQ checked Sep 22, 2026	1,001-5,000	5,486 contacts →
	Strong evidence “PT PLN Indonesia Power, known as PLN-IP, is a sub-holding company of PT PLN (Persero) holding which is conducting electric power generation and other supporting businesses.” Source: RevenueBase Database · checked Sep 22, 2026
15	Enel Green Power	Partial evidence	Roma, ItalyHQ checked Sep 22, 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 22, 2026
16	GALP	Indirect evidence	Alcântara, PortugalHQ checked Sep 22, 2026	5,001-10,000	4,960 contacts →
	Indirect 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 22, 2026
17	RENEW	Indirect evidence	Gurugram, IndiaHQ checked Sep 22, 2026	1,001-5,000	4,340 contacts →
	Indirect 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 22, 2026
18	Statkraft	Indirect evidence	Oslo, NorwayHQ checked Sep 22, 2026	5,001-10,000	4,161 contacts →
	Indirect evidence “Statkraft is a leading company in hydropower internationally and Europe’s largest generator of renewable energy.” Source: RevenueBase Database · checked Sep 22, 2026
19	Octopus Energy	Partial evidence	London, United KingdomHQ checked Sep 22, 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 22, 2026
20	RES	Indirect evidence	Kings Langley, United KingdomHQ checked Sep 22, 2026	1,001-5,000	3,721 contacts →
	Indirect 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 22, 2026
21	IDEX	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 22, 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 22, 2026
22	Adani Green Energy LTD	Indirect evidence	United StatesHQ checked Sep 22, 2026	1,001-5,000	3,017 contacts →
	Indirect 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 22, 2026
23	JSW Energy LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 22, 2026	1,001-5,000	2,920 contacts →
	Partial evidence “JSW Energy Limited is amongst India’s leading private sector power producing companies that believes in the efficient utilisation of all available resources.” Source: RevenueBase Database · checked Sep 22, 2026
24	Tata Power Renewable Energy Limited	Strong evidence	Mumbai, IndiaHQ checked Sep 22, 2026	501-1,000	2,660 contacts →
	Strong 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 22, 2026
25	Greenko Group	Indirect evidence	Hyderabad, IndiaHQ checked Sep 22, 2026	1,001-5,000	2,578 contacts →
	Indirect 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 22, 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: sustainable power generation 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 sustainable power generation companies.
Partial evidence: Its own public description names part of sustainable power generation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable power generation 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 12,514 sustainable power generation companies worldwide

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Sustainable power generation companies worldwide at a glance

As of Sep 22, 2026

30.2%Verified-email coverage

45.4Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

5,100

11-50

4,558

51-200

1,767

201-500

550

501-1,000

235

1,001-5,000

175

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 sustainable power generation 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 sustainable power generation companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sustainable power generation 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 sustainable power generation 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 sustainable power generation 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, 171,456 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 22, 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.

Sustainable power generation companies by location

67 lists · largest first

Every Sustainable power generation 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 sustainable power generation 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 sustainable power generation companies are there worldwide?

RevenueBase identified 12,514 sustainable power generation 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 sustainable power generation companies?

The United States leads with 1,566 companies, followed by Brazil (978) and India (955). Every sustainable power generation companies list by country and city is linked on this page.

Which city has the most sustainable power generation companies?

London leads with 181 headquartered companies, followed by Sao Paulo (123) and Madrid (117).

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 171,456 verified decision-maker contacts tracked across these 12,514 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 22, 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.