Company lists · Data refreshed September 2026

Top 25 Sustainable energy contractors based in Austin, United States

Name: Sustainable energy contractors based in Austin, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 68 companies tracked

RevenueBase identified 68 sustainable energy contractors headquartered in Austin, United States as of September 2026 and tracks 989 professional contacts across them, including 358 with verified work emails. New York is the largest hub.

This list covers sustainable energy contractors headquartered in Austin, 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 18, 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 18, 2026 86% judged on-target in blind review

68Companies

989Contacts tracked

358Verified emails

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The 25 largest sustainable energy contractors based in Austin, United States

Ranked by team size

Top 25 of 68 sustainable energy contractors based in Austin, United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable energy contractors: 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	Freedom Solar Power	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	501-1,000	259 contacts →
	Indirect evidence “Freedom Solar Power is the leader in turnkey solar installations in Texas, Colorado, Florida, Virginia and North Carolina, providing high quality, cost-effective, reliable solar…” Source: RevenueBase Database · checked Sep 18, 2026
2	Givepower	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	51-200	117 contacts →
	Partial evidence “GivePower’s mission is to electrify the world with clean energy, and provide greater health, economic and educational opportunities for developing regions that need them most.” Source: RevenueBase Database · checked Sep 18, 2026
3	Treaty OAK Clean Energy	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	51-200	95 contacts →
	Partial evidence “Treaty Oak Clean Energy is a community-oriented, full-service leader in solar and battery storage solutions.” Source: RevenueBase Database · checked Sep 18, 2026
4	Origis Energy Services	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	51-200	80 contacts →
	Partial evidence “Origis Energy is accelerating the transition to a carbon-free future by Reimagining Zero.” Source: RevenueBase Database · checked Sep 18, 2026
5	Lighthouse Solar Austin	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	41 contacts →
	Indirect evidence “Our vision is to empower and enlighten residential and commercial customers in Texas.” Source: RevenueBase Database · checked Sep 18, 2026
6	Holt Renewables	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	24 contacts →
	Partial evidence “At HOLT Renewables, we’re the driving force behind commercial renewable energy projects nationwide.” Source: RevenueBase Database · checked Sep 18, 2026
7	Dastur Energy	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	22 contacts →
	Partial evidence “Dastur Energy is an Austin, Texas based energy technology company, that is leading the way in the field of clean energy, with a strong track record of pioneering innovative…” Source: RevenueBase Database · checked Sep 18, 2026
8	Axis Solar	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	21 contacts →
	Indirect evidence “Axis Solar is your trusted partner for engineering, procurement, and construction of commercial solar systems.” Source: RevenueBase Database · checked Sep 18, 2026
9	Vikta Energy	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	51-200	14 contacts →
	Partial evidence “At Vikta Energy, we’re redefining the solar industry by delivering cutting-edge Tesla Energy products and exceptional service.” Source: RevenueBase Database · checked Sep 18, 2026
10	ATX Solar	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	13 contacts →
	Indirect evidence “ATX Solar was founded on the principle of empowering people.” Source: RevenueBase Database · checked Sep 18, 2026
11	512 Solar	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	12 contacts →
	Partial evidence “At 512 Solar, we are dedicated to providing remarkable renewable energy solutions to the Austin area we call home.” Source: RevenueBase Database · checked Sep 18, 2026
12	Solar Service	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	10 contacts →
	Indirect evidence “America’s first, highest rated, and largest direct to customer solar, battery, and EV charging service only company.” Source: RevenueBase Database · checked Sep 18, 2026
13	Industrial SUN	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	8 contacts →
	Partial evidence “Industrial Sun is a renewable energy and storage developer, purpose-built to serve industrial and high energy demand customers, including refineries, pumping and compression…” Source: RevenueBase Database · checked Sep 18, 2026
14	Accelergen Energy LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	8 contacts →
	Partial evidence “Founded in late 2020, Accelergen Energy LLC is a greenfield renewable energy developer focused on utility-scale solar, solar plus storage, and standalone storage projects.” Source: RevenueBase Database · checked Sep 18, 2026
15	Energiekontor US INC	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	51-200	7 contacts →
	Partial evidence “For the last 25 years, Energiekontor has stood for a sound approach to business and a wealth of experience in wind power.” Source: RevenueBase Database · checked Sep 18, 2026
16	Charge PRO	Strong evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	11-50	5 contacts →
	Strong evidence “Local leader in EV charging and sustainable energy solutions.” Source: RevenueBase Database · checked Sep 18, 2026
17	Divergent Solar	Strong evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	5 contacts →
	Strong evidence “Divergent Solar is a top tier brokerage that helps homeowners and businesses save thousands by switching to sustainable energy.” Source: RevenueBase Database · checked Sep 18, 2026
18	DKD Energy	Partial evidence	Austin, United StatesHQ checked Sep 18, 2026	1-10	5 contacts →
	Partial evidence “DKD Energy will design your solar panel system based on your average energy bills, the amount of sunlight your property gets, and your budget.” Source: RevenueBase Database · checked Sep 18, 2026
19	Entero Energy LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	4 contacts →
	Partial evidence “Commercial Solar: We design and construct solar energy systems for building owners.” Source: RevenueBase Database · checked Sep 18, 2026
20	Cool Solar	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	3 contacts →
	Partial evidence “The amount of energy the sun provides to the earth for an hour could meet our global energy needs for an entire year.” Source: RevenueBase Database · checked Sep 18, 2026
21	Clean Calcs, INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
22	Power Forward, LLC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	1 contacts →
	Indirect evidence “Power Forward is an engineering firm founded on the principle that those who came before us have had a powerful impact on our world today.” Source: RevenueBase Database · checked Sep 18, 2026
23	Acros Energy	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	1 contacts →
	Partial evidence “On the path toward a future powered by renewable energies, we strive to provide our clients with exceptional engineering services for their projects.” Source: RevenueBase Database · checked Sep 18, 2026
24	Trident Renewables	Partial evidence	Austin, United StatesHQ checked Sep 18, 2026	1-10	1 contacts →
	Partial evidence “We are an energy efficiency company specializing in comprehensive solutions for solar energy, roofing, and batteries.” Source: RevenueBase Database · checked Sep 18, 2026
25	Blue PAW Energy Service, LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 18, 2026	1-10	1 contacts →
	Partial evidence “Blue Paw Energy Service is a Texas based service company offering various products and services, via its subsidiary companies such as Blue Heeler Electric, to customers and…” Source: RevenueBase Database · checked Sep 18, 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: sustainable energy contractors. 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 sustainable energy contractors.
Partial evidence: Its own public description names part of sustainable energy contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable energy contractors. 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 68 sustainable energy contractors based in Austin, United States

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Sustainable energy contractors based in Austin, United States at a glance

As of Sep 18, 2026

36.2%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

154.4%Largest-city concentration · New York

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for Austin, so it is reported there. Company counts and contact totals on this page are exact for Austin, over 68 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 sustainable energy contractors, 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 Austin, United States whose own description of what they do matches “sustainable energy contractors”. 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 sustainable energy contractors), 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 sustainable energy contractors, and records with no verified work email. Companies headquartered outside Austin 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, 358 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 18, 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.

Sustainable energy contractors by metro in the United States

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 sustainable energy contractors, 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 sustainable energy contractors are there based in Austin, United States?

RevenueBase identified 68 sustainable energy contractors headquartered in Austin, 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?

Freedom Solar Power, headquartered in Austin, tops this list with the largest team on record.

Which city has the most sustainable energy contractors?

New York leads with 105 headquartered companies, followed by Houston (100) and San Diego (91).

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 358 verified decision-maker contacts tracked across these 68 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 18, 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.