Company lists · Data refreshed September 2026

Top 25 Renewable energy systems integrators worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 44,275 companies tracked

RevenueBase identified 44,275 renewable energy systems integrators worldwide as of September 2026 and tracks 802,713 professional contacts across them, including 211,605 with verified work emails. The United States is the largest market and London the largest hub.

This list covers renewable energy systems integrators 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 29, 2026. Country and city lists for renewable energy systems integrators 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 29, 2026 86% judged on-target in blind review

44,275Companies

802,713Contacts tracked

211,605Verified emails

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The 25 largest renewable energy systems integrators worldwide

Ranked by team size

Top 25 of 44,275 renewable energy systems integrators worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy systems integrators: 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	Johnson Controls	Strong evidence	Cork, IrelandHQ checked Sep 29, 2026	10001+	52,736 contacts →
	Strong evidence “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Source: RevenueBase Database · checked Sep 29, 2026
2	Siemens Energy	Partial evidence	Munich, GermanyHQ checked Sep 29, 2026	10001+	46,587 contacts →
	Partial evidence “Siemens Energy is one of the world’s leading energy technology companies.” Source: RevenueBase Database · checked Sep 29, 2026
3	Vestas	Partial evidence	Aarhus, DenmarkHQ checked Sep 29, 2026	10001+	27,085 contacts →
	Partial evidence “Vestas is the energy industry’s global partner on sustainable energy solutions.” Source: RevenueBase Database · checked Sep 29, 2026
4	Technipfmc	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 29, 2026	10001+	19,907 contacts →
	Partial evidence “TechnipFMC is a leading technology provider to the traditional and new energies industry, delivering fully integrated projects, products, and services.” Source: RevenueBase Database · checked Sep 29, 2026
5	Siemens Gamesa	Strong evidence	Zamudio, SpainHQ checked Sep 29, 2026	10001+	18,693 contacts →
	Strong 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 29, 2026
6	TRANE	Partial evidence	Davidson, NC, United StatesHQ checked Sep 29, 2026	10001+	10,272 contacts →
	Partial evidence “Trane is the building technology and energy solutions leader who deploys a depth and breadth of expertise, backgrounds, and perspectives to innovate new technologies and…” Source: RevenueBase Database · checked Sep 29, 2026
7	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 29, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 29, 2026
8	Sunrun	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	10001+	7,974 contacts →
	Partial evidence “Life runs on clean energy.” Source: RevenueBase Database · checked Sep 29, 2026
9	Ørsted	Strong evidence	Fredericia, United StatesHQ checked Sep 29, 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 29, 2026
10	Suzlon Group	Partial evidence	Pune, IndiaHQ checked Sep 29, 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 29, 2026
11	KENT	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 29, 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 29, 2026
12	Alfanar	Strong evidence	Riyadh, Saudi ArabiaHQ checked Sep 29, 2026	10001+	6,383 contacts →
	Strong evidence “alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Source: RevenueBase Database · checked Sep 29, 2026
13	Enel Green Power	Strong evidence	Roma, ItalyHQ checked Sep 29, 2026	5,001-10,000	5,251 contacts →
	Strong evidence “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
14	RENEW	Partial evidence	Gurugram, IndiaHQ checked Sep 29, 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 29, 2026
15	Generac	Partial evidence	Waukesha, WI, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,797 contacts →
	Partial evidence “Generac is the total energy solutions company powering a smarter world.” Source: RevenueBase Database · checked Sep 29, 2026
16	RES	Strong evidence	Kings Langley, United KingdomHQ checked Sep 29, 2026	1,001-5,000	3,721 contacts →
	Strong 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 29, 2026
17	Luminous Power Technologies P LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 29, 2026	5,001-10,000	3,713 contacts →
	Indirect evidence “Powering Progress, Lighting Lives!” Source: RevenueBase Database · checked Sep 29, 2026
18	ENPAL	Partial evidence	Berlin, GermanyHQ checked Sep 29, 2026	5,001-10,000	3,242 contacts →
	Partial evidence “Enpal is Europe's leading new energy company.” Source: RevenueBase Database · checked Sep 29, 2026
19	Adani Green Energy LTD	Strong evidence	United StatesHQ checked Sep 29, 2026	1,001-5,000	3,017 contacts →
	Strong 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 29, 2026
20	FTI	Strong evidence	Menasha, WI, United StatesHQ checked Sep 29, 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 29, 2026
21	Tata Power Renewable Energy Limited	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 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 29, 2026
22	Greenko Group	Strong evidence	Hyderabad, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,578 contacts →
	Strong 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 29, 2026
23	Goldwind	Strong evidence	Daxing District, ChinaHQ checked Sep 29, 2026	10001+	2,392 contacts →
	Strong evidence “As a reliable global strategic partner in clean energy, Goldwind is committed Driving a Renewable Future and centering its business on Ecology-Oriented Development+ENERGY industry…” Source: RevenueBase Database · checked Sep 29, 2026
24	Waaree Group	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 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 29, 2026
25	Mckinstry	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,213 contacts →
	Partial evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 29, 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 systems integrators. 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 systems integrators.
Partial evidence: Its own public description names part of renewable energy systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy systems integrators. 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 44,275 renewable energy systems integrators worldwide

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Renewable energy systems integrators worldwide at a glance

As of Sep 29, 2026

26.4%Verified-email coverage

18.1Average contacts per company

11-50Median size (employees)

0.7%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

21,282

11-50

16,179

51-200

4,683

201-500

1,153

501-1,000

355

1,001-5,000

272

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 renewable energy systems integrators, 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 renewable energy systems integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “renewable energy systems integrators”. 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 systems integrators), 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 systems integrators, 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, 211,605 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 29, 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 systems integrators by location

176 lists · largest first

Every Renewable energy systems integrators 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 systems integrators, 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 systems integrators are there worldwide?

RevenueBase identified 44,275 renewable energy systems integrators 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?

Johnson Controls, headquartered in Milwaukee, tops this list with the largest team on record.

Which country has the most renewable energy systems integrators?

The United States leads with 4,988 companies, followed by India (3,515) and Brazil (3,381). Every renewable energy systems integrators list by country and city is linked on this page.

Which city has the most renewable energy systems integrators?

London leads with 295 headquartered companies, followed by Madrid (277) and Sao Paulo (273).

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 211,605 verified decision-maker contacts tracked across these 44,275 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 29, 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.