Company lists · Data refreshed October 2026

Top 25 Energy efficiency investment firms worldwide

RevenueBase identified 3,272 company matches for energy efficiency investment firms worldwide as of October 2026 and tracks 39,056 professional contacts across them, including 15,102 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for energy efficiency investment firms 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 October 1, 2026. Country and city lists for energy efficiency investment firms 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 Oct 1, 2026 How this list was built
3,272Companies
39,056Contacts tracked
15,102Verified emails
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The 25 largest energy efficiency investment firms worldwide

Ranked by team size
Top 25 of 3,272 company matches for energy efficiency investment firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSaint-andré-lez-lille, FranceHQ recorded Oct 1, 202610001+8,427 contacts →

Exact match

“Dalkia : ensemble, relevons le défi climatique!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchAustin, TX, United StatesHQ recorded Oct 1, 20261,001-5,0002,121 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 · Oct 1, 2026 · View company records in RevenueBase
3Exact matchFramingham, MA, United StatesHQ recorded Oct 1, 20261,001-5,0001,383 contacts →

Exact match

“Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchWestborough, MA, United StatesHQ recorded Oct 1, 2026201-500481 contacts →

Exact match

“NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchAubervilliers, FranceHQ recorded Oct 1, 20261,001-5,000460 contacts →

Exact match

“Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchShelton, CT, United StatesHQ recorded Oct 1, 2026201-500366 contacts →

Exact match

“Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchRiyadh, Saudi ArabiaHQ recorded Oct 1, 2026201-500342 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 · Oct 1, 2026 · View company records in RevenueBase
8Exact matchOsasco, BrazilHQ recorded Oct 1, 2026501-1,000252 contacts →

Exact match

“Fundado em 2008 pelo engenheiro André Ferreira, o Grupo Luminae Energia é referência em eficiência energética na América Latina.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchNewark, NJ, United StatesHQ recorded Oct 1, 2026201-500233 contacts →

Exact match

“Lime Energy is building a new energy future.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchSao Paulo, BrazilHQ recorded Oct 1, 202651-200225 contacts →

Exact match

“Empresa voltada a projetos de Otimização e Eficiêntização no uso da energia elétrica.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchBeverly, MA, United StatesHQ recorded Oct 1, 2026201-500210 contacts →

Exact match

“Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202651-200205 contacts →

Exact match

“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchAnnapolis, MD, United StatesHQ recorded Oct 1, 202651-200196 contacts →

Exact match

“HASI invests in sustainable infrastructure assets advancing the energy transition.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchMinneapolis, MN, United StatesHQ recorded Oct 1, 2026201-500193 contacts →

Exact match

“EMC manages and scales turnkey energy efficiency solutions for Fortune 500 clients across their North American portfolios.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchOakland, CA, United StatesHQ recorded Oct 1, 202651-200184 contacts →

Exact match

“Renew Financial pioneered the residential Property Assessed Clean Energy (PACE) program, an innovative financing solution that helps homeowners invest in energy efficiency, water…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Oct 1, 2026201-500171 contacts →

Exact match

“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchMannheim, GermanyHQ recorded Oct 1, 202651-200155 contacts →

Exact match

“Die PAUL Tech AG mit Sitz in Mannheim macht Bestandsimmobilien grün und werthaltig.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchMarseille, FranceHQ recorded Oct 1, 202651-200151 contacts →

Exact match

“Implantée à Marseille depuis 2009, SONERGIA s’inscrit dans une démarche de développement durable en accompagnant les fournisseurs d’énergie, appelés obligés, dans l’atteinte des…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchCranston, RI, United StatesHQ recorded Oct 1, 2026201-500151 contacts →

Exact match

“RISE is a pioneer in the delivery of turnkey energy-efficiency services for residential, commercial and industrial facilities.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchBoulogne-billancourt, FranceHQ recorded Oct 1, 202651-200149 contacts →

Exact match

“Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchBogotá, ColombiaHQ recorded Oct 1, 2026201-500141 contacts →

Exact match

“Somos una empresa de origen francés especializada en la gestión energética para empresas.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchVicenza, ItalyHQ recorded Oct 1, 202651-200139 contacts →

Exact match

“City Green Light è un Gruppo che opera nel campo del risparmio e dell'efficientamento energetico, partecipata da primari fondi di investimento nazionali e internazionali…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchLjubljana, SloveniaHQ recorded Oct 1, 202651-200130 contacts →

Exact match

“Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchLa Garenne-colombes, FranceHQ recorded Oct 1, 202651-200129 contacts →

Exact match

“Depuis sa création en 2008, CertiNergy se mobilise pour impulser et mettre en œuvre des actions d’économies d’énergie pour tous les consommateurs d’énergie, du particulier à…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchFresno, CA, United StatesHQ recorded Oct 1, 2026501-1,000124 contacts →

Exact match

“Synergy Companies is the largest energy services companies in California and provides a comprehensive approach to energy efficiency and environmental solutions in both the…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 3,272 energy efficiency investment firms worldwide

See the full list, filter by size, metro and specialty, and access 15,102 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy efficiency investment firms worldwide at a glance

As of Oct 1, 2026
38.7%Verified-email coverage
11.9Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · London
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
1,964
11-50
1,001
51-200
220
201-500
47
501-1,000
14
1,001-5,000
12
5,001-10,000
3
10001+
2

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 energy efficiency investment firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “energy efficiency investment firms” 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 15,102 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 October 1, 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.

Energy efficiency investment firms by location

20 lists · largest first

Every Energy efficiency investment firms 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 “energy efficiency investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency investment firms are there worldwide?

RevenueBase identified 3,272 company matches for energy efficiency investment firms worldwide as of October 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?

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

Which country has the most energy efficiency investment firms?

The United States leads with 674 companies, followed by Italy (244) and the United Kingdom (243). Every energy efficiency investment firms list by country and city is linked on this page.

Which city has the most energy efficiency investment firms?

London leads with 67 company records, followed by Paris (58) and Madrid (51).

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 15,102 professional contacts with verified work emails tracked across these 3,272 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 October 1, 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.