Company lists · Data refreshed September 2026

Top 25 Solar design and engineering firms based in Austin, United States

Name: Solar design and engineering firms 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 86 companies tracked

RevenueBase identified 86 company matches for solar design and engineering firms associated with Austin, United States as of September 2026 and tracks 1,021 professional contacts across them, including 332 with verified work emails. Across the United States, New York is the largest hub for this category (160 companies); Austin has 86.

This list covers company matches for solar design and engineering firms associated with Austin, United States, 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 September 18, 2026.

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 Sep 18, 2026 How this list was built

86Companies

1,021Contacts tracked

332Verified emails

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The 25 largest solar design and engineering firms based in Austin, United States

Ranked by team size

Top 25 of 86 company matches for solar design and engineering firms based in Austin, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Freedom Solar Power	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	501-1,000	259 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2	Treaty OAK Clean Energy	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	51-200	95 contacts →
	Exact match “Treaty Oak Clean Energy is a community-oriented, full-service leader in solar and battery storage solutions.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3	Doucet, A Kleinfelder Company	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	51-200	88 contacts →
	Exact match “The Kleinfelder Group, Inc.(“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
4	Lighthouse Solar Austin	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	41 contacts →
	Exact match “Our vision is to empower and enlighten residential and commercial customers in Texas.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5	Wells Solar & Electrical Services	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	25 contacts →
	Exact match “Wells Solar & Electrical Services is a locally owned and operated Electrical Construction Company founded in Austin, Texas, and serving the Central Texas Area.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6	BAY & Associates, INC	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	24 contacts →
	Exact match “We are engineers who design mechanical, electrical, and plumbing systems with a focus on sustainability and energy efficiency.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
7	Holt Renewables	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	24 contacts →
	Exact match “At HOLT Renewables, we’re the driving force behind commercial renewable energy projects nationwide.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8	Axis Solar	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	21 contacts →
	Exact match “Axis Solar is your trusted partner for engineering, procurement, and construction of commercial solar systems.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9	Analemma Group	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	19 contacts →
	Exact match “Analemma Group delivers energy-efficient MEP engineering services tailored to the needs of architects, engineers, and building owners.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10	Vikta Energy	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	51-200	14 contacts →
	Exact match “At Vikta Energy, we’re redefining the solar industry by delivering cutting-edge Tesla Energy products and exceptional service.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
11	INS Engineering	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	13 contacts →
	Exact match “INS Engineering is a professional engineering firm providing engineering services, including system models, studies, and designs for transmission, distribution, and energy systems.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12	ATX Solar	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	13 contacts →
	Exact match “ATX Solar was founded on the principle of empowering people.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
13	512 Solar	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	12 contacts →
	Exact match “At 512 Solar, we are dedicated to providing remarkable renewable energy solutions to the Austin area we call home.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14	Solar Service	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	10 contacts →
	Exact match “America’s first, highest rated, and largest direct to customer solar, battery, and EV charging service only company.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15	Barley Pfeiffer Architecture	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	8 contacts →
	Exact match “BARLEY & PFEIFFER ARCHITECTS has enjoyed success designing a select number of award-winning professional offices, recreational centers, restaurants, educational facilities, and…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16	Architectural Wall Systems, INC	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	8 contacts →
	Exact match “In January 1986, Kevin McClintick, P.E.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
17	GNB Partners LLC	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	7 contacts →
	Exact match “GNB Partners is a small, nimble design services firm that specializes in full system design, including electrical, mechanical, and software.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
18	Gonzalez Shah Smith, INC	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	5 contacts →
	Exact match “We are an engineering consulting firm that provides professional engineering services in sustainable design, master planning, construction management and commissioning of…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
19	Charge PRO	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	5 contacts →
	Exact match “Local leader in EV charging and sustainable energy solutions.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
20	Touch Of Grey Marketing	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21	DKD Energy	Exact match	Austin, United StatesHQ recorded Sep 18, 2026	1-10	5 contacts →
	Exact match “DKD Energy will design your solar panel system based on your average energy bills, the amount of sunlight your property gets, and your budget.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
22	Divergent Solar	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	5 contacts →
	Exact match “Divergent Solar is a top tier brokerage that helps homeowners and businesses save thousands by switching to sustainable energy.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23	Entero Energy LLC	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	4 contacts →
	Exact match “Commercial Solar: We design and construct solar energy systems for building owners.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24	Restructure Studio	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	1-10	4 contacts →
	Exact match “Restructure Studio is dedicated to making sustainable design accessible to homeowners as well as building professionals in the residential construction industry.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25	Architectural Engineers Collaborative	Exact match	Austin, TX, United StatesHQ recorded Sep 18, 2026	11-50	3 contacts →
	Exact match “Architectural Engineers Collaborative (AEC) was founded in 1998 by experienced structural engineers with a mission to practice architectural engineering.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “solar design and engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 86 solar design and engineering firms based in Austin, United States

See the full list, filter by size, metro and specialty, and access 332 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Solar design and engineering firms based in Austin, United States at a glance

As of Sep 18, 2026

32.5%Verified-email coverage

11.9Average contacts per company

11-50Median size (employees)

Sep 18, 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 Austin, so it is reported there. Company counts and contact totals on this page are exact for Austin, over 86 companies.

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.
What qualifies: Company records associated with Austin, United States whose business descriptions match “solar design and engineering 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 332 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 September 18, 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.

Solar design and engineering firms by metro in the United States

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 “solar design and engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar design and engineering firms are there based in Austin, United States?

RevenueBase identified 86 company matches for solar design and engineering firms associated with Austin, United States as of September 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?

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

Which city in the United States has the most solar design and engineering firms?

New York leads the United States with 160 company records, followed by San Diego (121) and Houston (95). Austin has 86.

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 332 professional contacts with verified work emails tracked across these 86 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 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 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.