Company lists · Data refreshed September 2026

Top 25 Residential energy auditors worldwide

Name: Residential energy auditors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 756 companies tracked

RevenueBase identified 756 residential energy auditors worldwide as of September 2026 and tracks 4,694 professional contacts across them, including 1,304 with verified work emails and 0 with mobile numbers. The United States is the largest market and Paris the largest hub.

This list covers residential energy auditors 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 17, 2026. Country and city lists for residential energy auditors 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 17, 2026 86% judged on-target in blind review

756Companies

4,694Contacts tracked

1,304Verified emails

0Mobile numbers

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The 25 largest residential energy auditors worldwide

Ranked by team size

Top 25 of 756 residential energy auditors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to residential energy auditors: 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	Homeworks Energy, INC	Partial evidence	Medford, MA, United StatesHQ checked Sep 17, 2026	201-500	356 contacts →
	Partial evidence “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Source: RevenueBase Database · checked Sep 17, 2026
2	Greenfoot Energy Solutions	Partial evidence	Moncton, NB, CanadaHQ checked Sep 17, 2026	501-1,000	206 contacts →
	Partial evidence “Greenfoot Energy Solutions was established in 2014 by a group of energy experts dedicated to improving energy efficiency in Atlantic Canada.” Source: RevenueBase Database · checked Sep 17, 2026
3	Energy 350, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	51-200	60 contacts →
	Partial evidence “Energy 350 takes pride in performing high quality energy studies and energy efficiency related services for end users as well as program administrators.” Source: RevenueBase Database · checked Sep 17, 2026
4	Staples Energy	Strong evidence	Pewaukee, WI, United StatesHQ checked Sep 17, 2026	51-200	59 contacts →
	Strong evidence “Staples Energy helps commercial and residential customers, places of worship, and public facilities save hundreds of millions of kilowatt hours of energy.” Source: RevenueBase Database · checked Sep 17, 2026
5	Ithaque	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	56 contacts →
	Indirect evidence “Ithaque a été créée avec la conviction que la rénovation énergétique des maisons est un enjeu central de la transition écologique.” Source: RevenueBase Database · checked Sep 17, 2026
6	Sustainable Projects Group SPG	Partial evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	11-50	53 contacts →
	Partial evidence “Sustainable Projects Group is a design-build energy efficiency company working with industry leaders to help accomplish their energy savings goals by providing them with the…” Source: RevenueBase Database · checked Sep 17, 2026
7	Neeeco	Partial evidence	Wilmington, MA, United StatesHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “helps Massachusetts residents reduce energy consumption and costs, and increase comfort in their homes.” Source: RevenueBase Database · checked Sep 17, 2026
8	Resnet	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 17, 2026	11-50	46 contacts →
	Strong evidence “The Residential Energy Services Network (RESNET) was founded in 1995 as an independent, non-profit organization to help homeowners reduce the cost of their utility bills by making…” Source: RevenueBase Database · checked Sep 17, 2026
9	Brower Mechanical	Partial evidence	Rocklin, CA, United StatesHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “We provide energy solutions for homes and businesses.” Source: RevenueBase Database · checked Sep 17, 2026
10	Quality Conservation Services	Indirect evidence	Montclair, CA, United StatesHQ checked Sep 17, 2026	201-500	42 contacts →
	Indirect evidence “HVAC, Plumbing, Insulation, Weatherization.” Source: RevenueBase Database · checked Sep 17, 2026
11	Tucoenergie	Indirect evidence	Clichy, FranceHQ checked Sep 17, 2026	51-200	40 contacts →
	Indirect evidence “Depuis 2009, TucoEnergie est engagé pour rendre la rénovation énergétique possible et accessible au plus grand nombre.” Source: RevenueBase Database · checked Sep 17, 2026
12	Klimaatgarant	Partial evidence	Schiedam, NetherlandsHQ checked Sep 17, 2026	51-200	40 contacts →
	Partial evidence “25 jaar gegarandeerd energieneutraal Klimaatgarant zorgt voor de best mogelijke energieprestatie van woningen.” Source: RevenueBase Database · checked Sep 17, 2026
13	Edge Energy	Partial evidence	Beltsville, MD, United StatesHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “EDGE Energy is a vertically integrated solar, home performance, and electrification company serving homeowners across the Mid-Atlantic.” Source: RevenueBase Database · checked Sep 17, 2026
14	15 Lightyears	Strong evidence	Longwood, FL, United StatesHQ checked Sep 17, 2026	11-50	38 contacts →
	Strong evidence “Headquartered in Orlando, we are the largest Florida-based energy performance and testing contractor serving residential, multifamily, and commercial projects.” Source: RevenueBase Database · checked Sep 17, 2026
15	Energy Solutions Direct	Partial evidence	Clearwater, FL, United StatesHQ checked Sep 17, 2026	11-50	38 contacts →
	Partial evidence “Evaluating immediate and long-term solutions needed to make your home more energy efficient will save you significant money over time.” Source: RevenueBase Database · checked Sep 17, 2026
16	Zero Energy Contracting	Partial evidence	Cerritos, CA, United StatesHQ checked Sep 17, 2026	51-200	37 contacts →
	Partial evidence “Saving energy not only saves you money, but it also helps protect our planet's resources for generations to come.” Source: RevenueBase Database · checked Sep 17, 2026
17	Dr. Energy Saver	Indirect evidence	Seymour, CT, United StatesHQ checked Sep 17, 2026	11-50	32 contacts →
	Indirect evidence “Dr.” Source: RevenueBase Database · checked Sep 17, 2026
18	Tri-State Energy	Partial evidence	New Brunswick, NJ, United StatesHQ checked Sep 17, 2026	11-50	31 contacts →
	Partial evidence “Tri-State Energy (formerly Tri-State Light & Energy) is an engineering firm with over 40 years of experience specializing in energy efficiency consulting and implementation…” Source: RevenueBase Database · checked Sep 17, 2026
19	Vert Energy Group	Partial evidence	Orange, CA, United StatesHQ checked Sep 17, 2026	11-50	30 contacts →
	Partial evidence “Vert Energy Group is a full-service energy efficiency and engineering company that helps building owners and property managers complete Energy Benchmark Compliance, Energy Audits…” Source: RevenueBase Database · checked Sep 17, 2026
20	Greenlink Energy Solutions	Partial evidence	Rockford, IL, United StatesHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “Greenlink Energy Solutions is headquartered in Rockford, Illinois and serves clients nationwide.” Source: RevenueBase Database · checked Sep 17, 2026
21	American Installations	Partial evidence	Granby, MA, CanadaHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “At American Installations, we specialize in delivering energy efficiency to homes and buildings throughout New England.” Source: RevenueBase Database · checked Sep 17, 2026
22	Enersavings INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 17, 2026	51-200	27 contacts →
	Partial evidence “EnerSavings Inc is committed to providing a sustainable and tailored energy-saving solution, so our customers reduce operating expenses, eliminate maintenance, boost the…” Source: RevenueBase Database · checked Sep 17, 2026
23	Zerodraft	Partial evidence	Syracuse, NY, United StatesHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “At ZERODRAFT we specialize in cutting edge treatments to improve energy efficiency, lower utility costs, and increase home comfort.” Source: RevenueBase Database · checked Sep 17, 2026
24	Appore	Indirect evidence	Montceau-les-mines, FranceHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “APPORE (Agence de Préconisation Pour la Rénovation Énergétique) est un véritable acteur de la rénovation énergétique de l’habitat.” Source: RevenueBase Database · checked Sep 17, 2026
25	Paradigm Energy Services	Indirect evidence	Somerville, MA, United StatesHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “We spend 90% of our lives in buildings.” Source: RevenueBase Database · checked Sep 17, 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: residential energy auditors. 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 residential energy auditors.
Partial evidence: Its own public description names part of residential energy auditors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential energy auditors. 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 756 residential energy auditors worldwide

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Residential energy auditors worldwide at a glance

As of Sep 17, 2026

27.8%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

506

11-50

193

51-200

201-500

501-1,000

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 residential energy auditors, 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: 6 countries, largest first: the United States, France, Germany, Canada, the United Kingdom, the Netherlands. Country and city lists for residential energy auditors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “residential energy auditors”. 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 residential energy auditors), 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 residential energy auditors, 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, 1,304 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 17, 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.

Residential energy auditors by location

6 lists · largest first

Every Residential energy auditors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 residential energy auditors, 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 residential energy auditors are there worldwide?

RevenueBase identified 756 residential energy auditors 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?

Homeworks Energy, INC, headquartered in Medford, tops this list with the largest team on record.

Which country has the most residential energy auditors?

The United States leads with 382 companies, followed by France (159) and Germany (67). Every residential energy auditors list by country and city is linked on this page.

Which city has the most residential energy auditors?

Paris leads with 20 headquartered companies, followed by Austin (9) and Denver (8).

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 1,304 verified decision-maker contacts tracked across these 756 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 17, 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.