Company lists · Data refreshed November 2026

Top 25 Energy efficiency research companies worldwide

RevenueBase identified 3,636 company matches for energy efficiency research companies worldwide as of November 2026 and tracks 32,595 professional contacts across them, including 8,657 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers company matches for energy efficiency research companies 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 energy efficiency research companies 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
3,636Companies
32,595Contacts tracked
8,657Verified emails
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The 25 largest energy efficiency research companies worldwide

Ranked by team size
Top 25 of 3,636 company matches for energy efficiency research companies 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,0002,264 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
2Exact matchAubervilliers, FranceHQ recorded Nov 6, 20261,001-5,000435 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500336 contacts →

Exact match

“A World Brand/Pride of Turkey In Energy Quality ENTES is a family that works ardently for energy quality and efficiency in our country, where energy is valuable and overcosting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchJuiz De Fora, BrazilHQ recorded Nov 6, 2026201-500323 contacts →

Exact match

“A DEODE Energia foi fundada em 2012 proveniente da HF Energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPortland, OR, United StatesHQ recorded Nov 6, 2026201-500304 contacts →

Exact match

“At Cascade Energy, we believe in better.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSt.-ouen, FranceHQ recorded Nov 6, 2026201-500267 contacts →

Exact match

“Economie d'Energie a vocation à accompagner l'ensemble des acteurs du secteur de l'énergie à concevoir des stratégies d'économies d'énergie permettant de répondre aux nouvelles…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202651-200237 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSan Leandro, CA, United StatesHQ recorded Nov 6, 2026201-500230 contacts →

Exact match

“Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchDartmouth, NS, CanadaHQ recorded Nov 6, 202651-200228 contacts →

Exact match

“EfficiencyOne is a leading efficiency expert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchFairfax, VA, United StatesHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPetten, NetherlandsHQ recorded Nov 6, 2026201-500217 contacts →

Exact match

“A transition to a sustainable energy system is needed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchJaipur, IndiaHQ recorded Nov 6, 202651-200211 contacts →

Exact match

“Design2Occupancy Services LLP (D2O) is a leading organization providing a platform and solutions in Energy Efficiency Analysis and Energy Code Compliances, Climate Change…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200203 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHalf Moon Bay, CA, United StatesHQ recorded Nov 6, 2026201-500194 contacts →

Exact match

“Resource Innovations now combined with Nexant is a substantially woman-owned, woman-led energy consulting firm dedicated to creating equal access to clean resources through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMóstoles, SpainHQ recorded Nov 6, 202651-200168 contacts →

Exact match

“IMDEA Energy Institute was created in 2006 by the Regional Government of Comunidad de Madrid as non-profit Foundation to promote and carry out R&D&i activities to contribute to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSydney, AustraliaHQ recorded Nov 6, 202651-200164 contacts →

Exact match

“Zembl is an energy procurement specialist and total business energy partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMunich, GermanyHQ recorded Nov 6, 202651-200145 contacts →

Exact match

“At tado° we believe that unnecessarily wasting energy should be a thing of the past.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLa Garenne-colombes, FranceHQ recorded Nov 6, 202651-200140 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202651-200135 contacts →

Exact match

“As a team at Evergreen Energy Partners, we specialize in connecting utility customers with expert knowledge and innovative solutions for commercial, industrial, and residential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMilford, OH, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLa Crosse, IA, United StatesHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHarelbeke, BelgiumHQ recorded Nov 6, 202651-200126 contacts →

Exact match

“Smappee is an energy technology company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRabat, MoroccoHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Created in 2011, under the initiative of the Moroccan Ministry of Energy, Mines and Sustainable Development and the public and private Moroccan key actors in the energy sector…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchIthaca, NY, United StatesHQ recorded Nov 6, 202651-200120 contacts →

Exact match

“PSD is an energy efficiency services and technology company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBoston, ON, CanadaHQ recorded Nov 6, 202611-50119 contacts →

Exact match

“MPN Capital Markets is a full-service, energy management consulting firm that advises businesses, governments, non-governmental organizations, homeowners and not-for-profits.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 3,636 energy efficiency research companies worldwide

See the full list, filter by size, metro and specialty, and access 8,657 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy efficiency research companies worldwide at a glance

As of Nov 6, 2026
26.6%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,257
11-50
1,052
51-200
230
201-500
46
501-1,000
14
1,001-5,000
13
5,001-10,000
3
10001+
1

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 research companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “energy efficiency research companies” 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 8,657 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.

Energy efficiency research companies by location

21 lists · largest first

Every Energy efficiency research 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 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 research companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency research companies are there worldwide?

RevenueBase identified 3,636 company matches for energy efficiency research companies 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?

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

Which country has the most energy efficiency research companies?

The United States leads with 533 companies, followed by Italy (280) and Spain (278). Every energy efficiency research companies list by country and city is linked on this page.

Which city has the most energy efficiency research companies?

Madrid leads with 46 company records, followed by Paris (37) and Barcelona (30).

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 8,657 professional contacts with verified work emails tracked across these 3,636 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.