Company lists · Data refreshed September 2026

Top 25 Residential energy efficiency companies based in Houston, United States

Name: Residential energy efficiency companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 72 companies tracked

RevenueBase identified 72 residential energy efficiency companies headquartered in Houston, United States as of September 2026 and tracks 1,787 professional contacts across them, including 432 with verified work emails. Houston is the largest hub.

This list covers residential energy efficiency companies headquartered in Houston, United States, 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.

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

72Companies

1,787Contacts tracked

432Verified emails

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The 25 largest residential energy efficiency companies based in Houston, United States

Ranked by team size

Top 25 of 72 residential energy efficiency companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to residential energy efficiency companies: 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	Sunnova Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	906 contacts →
	Partial evidence “Sunnova Energy International Inc.(NYSE: NOVA) is an industry-leading energy services company focused on making clean energy more accessible, reliable, and affordable for…” Source: RevenueBase Database · checked Sep 17, 2026
2	Arcxis	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	389 contacts →
	Partial evidence “ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Source: RevenueBase Database · checked Sep 17, 2026
3	Fastrac Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Partial evidence “At FASTRAC Energy Services, we specialize in providing comprehensive solar energy solutions that help homeowners and businesses save on energy costs while contributing to a their…” Source: RevenueBase Database · checked Sep 17, 2026
4	Bioeco Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	24 contacts →
	Partial evidence “Bioeco Energy’s alternative energy solutions capture the renewable power of the sun, fueling new possibilities for your business and home.” Source: RevenueBase Database · checked Sep 17, 2026
5	Sunshine Renewable Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Texas' first NABCEP Accredited PV Installation Company • NABCEP Certified PV Installation Professional # PV-102117-017952 Sunshine Renewable Solutions was established to address…” Source: RevenueBase Database · checked Sep 17, 2026
6	Zolarzo	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “We are a company specialized in the installation of solar energy systems and roof replacement.” Source: RevenueBase Database · checked Sep 17, 2026
7	GATBY	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	17 contacts →
	Strong evidence “We are a tech-forward residential energy broker helping consumers, both renters and homeowners, lower their energy bills through affordable and reliable energy plans and products…” Source: RevenueBase Database · checked Sep 17, 2026
8	J&h Energy Consultants	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “As a premier energy consulting firm based in Houston, we understand the unique energy challenges that homeowners and businesses face.” Source: RevenueBase Database · checked Sep 17, 2026
9	Texon Solar Energy LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Texon Solar has you covered!” Source: RevenueBase Database · checked Sep 17, 2026
10	Energy Edge Consulting	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Energy Edge offers strategic energy management and renewable energy solutions to a wide range of businesses and institutions.” Source: RevenueBase Database · checked Sep 17, 2026
11	Inovues	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “INOVUES is re-energizing building facades and windows without replacement, enabling building owners to cut energy loss, reduce carbon emissions, improve occupant comfort, and…” Source: RevenueBase Database · checked Sep 17, 2026
12	KEY HTX	Strong evidence	Houston, United StatesHQ checked Sep 17, 2026	1-10	10 contacts →
	Strong evidence “At our core we are an energy-efficiency driven, general services company.” Source: RevenueBase Database · checked Sep 17, 2026
13	Hage Energy	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “Hage Energy is a Houston-based HVAC and home performance company specializing in residential and light-commercial air conditioning, heating, and energy-efficiency solutions across…” Source: RevenueBase Database · checked Sep 17, 2026
14	Hita Technology INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “We are a group highly experienced professionals provide services of Energy Audit, Energy Saving & Storage solutions, Energy management, Power Electronics and Renewable Energy…” Source: RevenueBase Database · checked Sep 17, 2026
15	Creatum Solar	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “At Creatum Solar, we're on a mission to harness the boundless power of the sun and make it accessible to you.” Source: RevenueBase Database · checked Sep 17, 2026
16	Utility Rescue Holdings, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Utility Rescue Holdings, Inc, is a diversified energy and financial technology company offering homes and businesses innovative ways to effectively lower their monthly spending on…” Source: RevenueBase Database · checked Sep 17, 2026
17	Solenergy LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “SolEnergy provides full service assistance in moving your home or business toward the future of clean renewable energy solutions.” Source: RevenueBase Database · checked Sep 17, 2026
18	Exceledy Technologies LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Strong evidence “Energy Efficiency and Management Company” Source: RevenueBase Database · checked Sep 17, 2026
19	Smart Solutions Enterprise	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “We are a Houston-based solar industry leader, founded in 2019 with a passion for clean energy and a commitment to excellence.” Source: RevenueBase Database · checked Sep 17, 2026
20	4ward Energy Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “4WARD Energy Solutions is a national energy management and consulting firm, with its headquarters in Houston.” Source: RevenueBase Database · checked Sep 17, 2026
21	Save Watts CO	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	1 contacts →
	Partial evidence “We provide expertise in energy usage saving on utility bills, increasing your overall portfolio value and operational performance.” Source: RevenueBase Database · checked Sep 17, 2026
22	Solityx Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	1 contacts →
	Partial evidence “Solityx is at the forefront of revolutionizing the renewable energy landscape, specializing in solar energy solutions that merge innovation with sustainability.” Source: RevenueBase Database · checked Sep 17, 2026
23	Helix SUN	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	1 contacts →
	Partial evidence “Helix Sun is a residential and commercial solar development company located in Houston, Texas.” Source: RevenueBase Database · checked Sep 17, 2026
24	DM Solar Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “At DM Solar Group, we are dedicated to revolutionizing the way businesses harness energy by providing tailored commercial solar solutions that maximize savings and promote…” Source: RevenueBase Database · checked Sep 17, 2026
25	Starfish Electric	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “Starfish Electric designs, installs, and operates offgrid clean energy systems for homes.” 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 efficiency companies. 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 efficiency companies.
Partial evidence: Its own public description names part of residential energy efficiency companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential energy efficiency companies. 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 72 residential energy efficiency companies based in Houston, United States

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Residential energy efficiency companies based in Houston, United States at a glance

As of Sep 17, 2026

24.2%Verified-email coverage

24.8Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 72 companies.

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 efficiency companies, 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.
What qualifies: Companies headquartered in Houston, United States whose own description of what they do matches “residential energy efficiency companies”. 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 efficiency companies), 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 efficiency companies, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
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, 432 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 efficiency companies by metro in the United States

Residential energy efficiency companies in Houston72
Residential energy efficiency companies in New York69
Residential energy efficiency companies in Austin45
Residential energy efficiency companies in Denver45
Residential energy efficiency companies in San Diego44
Residential energy efficiency companies in Dallas43
Residential energy efficiency companies in Chicago40
Residential energy efficiency companies in Los Angeles39
Residential energy efficiency companies in Las Vegas36
Residential energy efficiency companies in Phoenix36
Residential energy efficiency companies in Miami33
Residential energy efficiency companies in Atlanta32
Residential energy efficiency companies in Orlando25

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 efficiency companies, 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 efficiency companies are there based in Houston, United States?

RevenueBase identified 72 residential energy efficiency companies headquartered in Houston, United States 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?

Sunnova Energy, headquartered in Houston, tops this list with the largest team on record.

Which city has the most residential energy efficiency companies?

Houston leads with 72 headquartered companies, followed by New York (69) and Austin (45).

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 432 verified decision-maker contacts tracked across these 72 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.