Company lists · Data refreshed November 2026

Top 25 Green building and energy efficiency contractors worldwide

Name: Green building and energy efficiency contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 11,077 companies tracked

RevenueBase identified 11,077 company matches for green building and energy efficiency contractors worldwide as of November 2026 and tracks 174,311 professional contacts across them, including 48,441 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for green building and energy efficiency contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for green building and energy efficiency contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

11,077Companies

174,311Contacts tracked

48,441Verified emails

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The 25 largest green building and energy efficiency contractors worldwide

Ranked by team size

Top 25 of 11,077 company matches for green building and energy efficiency contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Johnson Controls	Exact match	Cork, IrelandHQ recorded Nov 6, 2026	10001+	55,567 contacts →
	Exact match “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Nov 6, 2026	10001+	9,075 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Equans Belux	Exact match	Brussels, BelgiumHQ recorded Nov 6, 2026	5,001-10,000	5,429 contacts →
	Exact match “What if you could use your talent to contribute to the great challenges of tomorrow?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,347 contacts →
	Exact match “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,264 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,642 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,570 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure company delivering integrated solutions to create reliable power and modernize infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	GK	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	1,001-5,000	1,190 contacts →
	Exact match “GK er en ledende teknisk entreprenør og servicepartner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	LOCAL	Exact match	The Hague, NetherlandsHQ recorded Nov 6, 2026	n/a	1,176 contacts →
	Exact match “Local verandert vastgoed Dit doen wij door de waarde van vastgoed te optimaliseren voor zowel de eigenaar als de gebruiker.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	VAN Dorp	Exact match	Zoetermeer, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	923 contacts →
	Exact match “Bij Van Dorp zijn wij ervan doordrongen dat wij de wereld niet voor onszelf hebben.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Feenstra	Exact match	Lelystad, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	813 contacts →
	Exact match “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Albireo Energy	Exact match	Edison, NJ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	672 contacts →
	Exact match “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Kieback&peter	Exact match	Berlin, GermanyHQ recorded Nov 6, 2026	1,001-5,000	602 contacts →
	Exact match “Our DNA are sustainable buildings As a Smart Building Solutioneer, we combine intelligent building technologies, data-based services, sustainable excellence and multiple synergy…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Korra Energi	Exact match	Cairo, EgyptHQ recorded Nov 6, 2026	1,001-5,000	517 contacts →
	Exact match “Korra Energi is a proud Egyptian leader in energy efficiency and construction services, backed by over 25 years of expertise and a vision of "Growth and Prosperity"(إعمار الأرض).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Sitelogiq	Exact match	Minneapolis, MN, United StatesHQ recorded Nov 6, 2026	501-1,000	503 contacts →
	Exact match “SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Noresco	Exact match	Westborough, NJ, United StatesHQ recorded Nov 6, 2026	201-500	496 contacts →
	Exact match “NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Grosvenor Engineering Group	Exact match	Moorebank, AustraliaHQ recorded Nov 6, 2026	501-1,000	466 contacts →
	Exact match “Grosvenor Engineering Group is passionate about creating long-term sustainable value for building owners, managers and their occupants.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Apoprojekt	Exact match	Hamburg, GermanyHQ recorded Nov 6, 2026	501-1,000	431 contacts →
	Exact match “Wir geben bestehenden Gebäuden eine neue Zukunft Vom Mieterausbau über Refurbishment & Revitalisierung bis hin zu maßgeschneiderten ESG-Lösungen realisiert apoprojekt erfolgreich…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Veregy	Exact match	Phoenix, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	413 contacts →
	Exact match “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Arcxis	Exact match	Houston, MN, United StatesHQ recorded Nov 6, 2026	501-1,000	403 contacts →
	Exact match “ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	KBANE	Exact match	Villeneuve-d’ascq, FranceHQ recorded Nov 6, 2026	501-1,000	384 contacts →
	Exact match “Kbane est la 1ère enseigne en France, dédiée à la maison performante.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Homeworks Energy, INC	Exact match	Medford, MA, United StatesHQ recorded Nov 6, 2026	201-500	381 contacts →
	Exact match “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	ترشيد Tarshid	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 6, 2026	201-500	368 contacts →
	Exact match “The National Energy Services Company (TARSHID) is a national company wholly owned by the Public Investment Fund (PIF).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Renotec NV	Exact match	Geel, BelgiumHQ recorded Nov 6, 2026	501-1,000	359 contacts →
	Exact match “Renotec is een gespecialiseerde hoofdaannemer die zich focust op energetische renovatie- en restauratiewerken en geeft zo gebouwen, monumenten, kunstwerken en ondergrondse…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Performance Services	Exact match	Indianapolis, CO, United StatesHQ recorded Nov 6, 2026	201-500	335 contacts →
	Exact match “We design and construct high-performing buildings and systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “green building and energy efficiency contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 11,077 green building and energy efficiency contractors worldwide

See the full list, filter by size, metro and specialty, and access 48,441 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green building and energy efficiency contractors worldwide at a glance

As of Nov 6, 2026

27.8%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

6,491

11-50

3,399

51-200

795

201-500

145

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for green building and energy efficiency contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “green building and energy efficiency contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 48,441 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Green building and energy efficiency contractors by location

66 lists · largest first

Every Green building and energy efficiency 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “green building and energy efficiency contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green building and energy efficiency contractors are there worldwide?

RevenueBase identified 11,077 company matches for green building and energy efficiency contractors worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Johnson Controls tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most green building and energy efficiency contractors?

The United States leads with 2,501 companies, followed by France (1,003) and the United Kingdom (938). Every green building and energy efficiency contractors list by country and city is linked on this page.

Which city has the most green building and energy efficiency contractors?

London leads with 134 company records, followed by Paris (129) and Madrid (85).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 48,441 professional contacts with verified work emails tracked across these 11,077 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.