Company lists · Data refreshed September 2026

Top 25 Alternative energy contractors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 36,039 companies tracked

RevenueBase identified 36,039 alternative energy contractors worldwide as of September 2026 and tracks 432,006 professional contacts across them, including 105,161 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers alternative energy contractors 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 contractors 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

36,039Companies

432,006Contacts tracked

105,161Verified emails

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The 25 largest alternative energy contractors worldwide

Ranked by team size

Top 25 of 36,039 alternative energy contractors 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 contractors: 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	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
2	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 30, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 30, 2026
3	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
4	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
5	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
6	KENTZ	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 30, 2026	10001+	3,987 contacts →
	Indirect evidence “Following the acquisition of SNC-Lavalin's oil and gas division, Kentz has become a part of Kent.” Source: RevenueBase Database · checked Sep 30, 2026
7	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
8	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
9	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
10	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
11	Sunpower Corporation	Partial evidence	Richmond, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,675 contacts →
	Partial evidence “We believe clean energy and backup storage should be accessible to everybody.” Source: RevenueBase Database · checked Sep 30, 2026
12	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
13	SICIM	Strong evidence	Busseto, ItalyHQ checked Sep 30, 2026	10001+	2,404 contacts →
	Strong evidence “SICIM is a leading Worldwide EPC Contractor since 1962, offering all kinds of services related to the production, treatment and transportation of traditional energy sources and…” Source: RevenueBase Database · checked Sep 30, 2026
14	Goldwind	Partial evidence	Daxing District, ChinaHQ checked Sep 30, 2026	10001+	2,392 contacts →
	Partial 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 30, 2026
15	Waaree Group	Partial evidence	Mumbai, IndiaHQ checked Sep 30, 2026	5,001-10,000	2,264 contacts →
	Partial 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 30, 2026
16	Envision Energy	Partial evidence	Huangpu District, ChinaHQ checked Sep 30, 2026	1,001-5,000	1,961 contacts →
	Partial evidence “Envision Energy is a world-leading green technology company that provides renewable energy solutions for global enterprises, governments, and institutions.” Source: RevenueBase Database · checked Sep 30, 2026
17	Mitsubishi Power Americas	Indirect evidence	Lake Mary, FL, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,859 contacts →
	Indirect evidence “Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Source: RevenueBase Database · checked Sep 30, 2026
18	Premier Energies Limited	Partial evidence	Secunderabad, IndiaHQ checked Sep 30, 2026	501-1,000	1,854 contacts →
	Partial evidence “INDIA'S FIRST LEED GOLD-RATED SOLAR MANUFACTURING FACILITY- The year was 1995, when Shri Surendarpal Singh Saluja established Premier Energies with the goal to harness the sun’s…” Source: RevenueBase Database · checked Sep 30, 2026
19	Solarsquare	Indirect evidence	Mumbai, IndiaHQ checked Sep 30, 2026	1,001-5,000	1,812 contacts →
	Indirect evidence “At SolarSquare, we make going solar simple, reliable, and worry-free.” Source: RevenueBase Database · checked Sep 30, 2026
20	Trinity Solar	Indirect evidence	Wall Township, NJ, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,794 contacts →
	Indirect evidence “Trinity Solar is one of the largest privately held residential solar companies in the nation.” Source: RevenueBase Database · checked Sep 30, 2026
21	Voltalia	Partial evidence	Paris, FranceHQ checked Sep 30, 2026	1,001-5,000	1,436 contacts →
	Partial evidence “Voltalia is an international player in renewable energies.” Source: RevenueBase Database · checked Sep 30, 2026
22	KK Wind Solutions	Indirect evidence	Ikast, DenmarkHQ checked Sep 30, 2026	1,001-5,000	1,423 contacts →
	Indirect evidence “KK Wind Solutions is a dedicated greentech company with more than 35 years of experience in electrical systems for wind turbines.” Source: RevenueBase Database · checked Sep 30, 2026
23	Solv Energy	Partial evidence	San Diego, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,286 contacts →
	Partial evidence “SOLV Energy is a renewable energy solutions provider for utility solar, energy storage, and high voltage projects in North America.” Source: RevenueBase Database · checked Sep 30, 2026
24	ZENER	Indirect evidence	Madrid, SpainHQ checked Sep 30, 2026	5,001-10,000	1,207 contacts →
	Indirect evidence “En Zener crecemos acelerando el crecimiento de nuestros clientes.” Source: RevenueBase Database · checked Sep 30, 2026
25	Blue Raven Solar	Indirect evidence	Orem, UT, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,168 contacts →
	Indirect evidence “Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.” 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 contractors. 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 contractors.
Partial evidence: Its own public description names part of alternative energy contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alternative energy contractors. 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 36,039 alternative energy contractors worldwide

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Alternative energy contractors worldwide at a glance

As of Sep 30, 2026

24.3%Verified-email coverage

12.0Average contacts per company

11-50Median size (employees)

0.6%Largest-city concentration · Lahore

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

17,559

11-50

13,465

51-200

3,538

201-500

778

501-1,000

204

1,001-5,000

148

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 contractors, 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 contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “alternative energy contractors”. 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 contractors), 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 contractors, 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, 105,161 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 contractors by location

129 lists · largest first

Every Alternative energy contractors 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 contractors, 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 contractors are there worldwide?

RevenueBase identified 36,039 alternative energy contractors 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?

Siemens Gamesa, headquartered in Zamudio, tops this list with the largest team on record.

Which country has the most alternative energy contractors?

The United States leads with 4,310 companies, followed by Brazil (2,537) and India (2,460). Every alternative energy contractors list by country and city is linked on this page.

Which city has the most alternative energy contractors?

Lahore leads with 203 headquartered companies, followed by London (196) and Madrid (188).

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 105,161 verified decision-maker contacts tracked across these 36,039 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.