Company lists · Data refreshed October 2026

Top 25 Energy systems engineering services based in Austin, United States

Name: Energy systems engineering services based in Austin, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 25, 2026 65 companies tracked

RevenueBase identified 65 company matches for energy systems engineering services associated with Austin, United States as of October 2026 and tracks 1,657 professional contacts across them, including 693 with verified work emails. Across the United States, Houston is the largest hub for this category (249 companies); Austin has 65.

This list covers company matches for energy systems engineering services 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 October 25, 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 Oct 25, 2026 How this list was built

65Companies

1,657Contacts tracked

693Verified emails

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The 25 largest energy systems engineering services based in Austin, United States

Ranked by team size

Top 25 of 65 company matches for energy systems engineering services based in Austin, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 25, 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	Electric Power Engineers	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	501-1,000	678 contacts →
	Exact match “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
2	Illumine-I	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	201-500	274 contacts →
	Exact match “The world runs on power.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
3	EEA Consulting Engineers	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	51-200	151 contacts →
	Exact match “EEA Consulting Engineers is a full-service mechanical, electrical and plumbing (MEP)consulting firm serving new and existing facilities in all market sectors.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
4	MEP Engineering, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	83 contacts →
	Exact match “Over the course of our firm’s 28-year history, MEP has focused on cultivating a team which is friendly, approachable, and responsive.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
5	BEE	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	40 contacts →
	Exact match “Bee® (Building energy efficiency) is a building and facility energy engineering firm.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
6	Energy Renewal Partners, LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	32 contacts →
	Exact match “The mission of Energy Renewal Partners is to be a partner to our clients focused on delivering successful projects.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
7	Harris Energy Solutions LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	30 contacts →
	Exact match “HES has extensive experience and expertise in all aspects of energy management, including energy efficiency analysis, energy master planning, alternative energy sources, and…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
8	Malone Wheeler, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	25 contacts →
	Exact match “Malone/Wheeler, Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
9	Dastur Energy	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	23 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
10	BAY & Associates, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	22 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 · Oct 25, 2026 · View company records in RevenueBase
11	SQ Environmental, LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	22 contacts →
	Exact match “SQ Environmental, LLC (SQE) is a full-service environmental engineering and consulting firm with a team of professionals dedicated to providing high-quality, cost-effective…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
12	INS Engineering	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	19 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 · Oct 25, 2026 · View company records in RevenueBase
13	Axis Solar	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	19 contacts →
	Exact match “Axis Solar is your trusted partner for engineering, procurement, and construction of commercial solar systems.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
14	Waterloo MEP Engineering	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	16 contacts →
	Exact match “Waterloo\|MEP Engineering, LLC is a forward-thinking mechanical, electrical, and plumbing engineering firm focused on delivering superior design solutions with attentive client…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
15	Blue Ocean Energy	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	1-10	13 contacts →
	Exact match “Blue Ocean Energy is an energy consulting firm located in Austin, Texas.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
16	Arete Engineering	Exact match	Austin, United StatesHQ recorded Oct 25, 2026	1-10	9 contacts →
	Exact match “Arete Engineering is a specialized engineering firm based in Austin, Texas, delivering high-quality, value-added solutions that exceed industry standards.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
17	Longevity Partners USA	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	7 contacts →
	Exact match “Longevity Partners is a multidisciplinary energy and sustainability consultancy and investment business.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
18	GNB Partners LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 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 · Oct 25, 2026 · View company records in RevenueBase
19	Energy Bees	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	1-10	7 contacts →
	Exact match “Energy Bees is a women-owned energy consulting firm helping clients make smarter, data-driven decisions that improve financial performance, compliance, and long-term asset value.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
20	Ideasmiths LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	1-10	6 contacts →
	Exact match “IdeaSmiths has a deep and broad understanding of energy systems.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
21	Gonzalez Shah Smith, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 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 · Oct 25, 2026 · View company records in RevenueBase
22	Simbased	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	1-10	5 contacts →
	Exact match “SIMBASED is an engineering consulting company specializing in product design and advanced computer simulations.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
23	Harutunian Engineering, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	5 contacts →
	Exact match “Harutunian Engineering, Inc.(HEI) is a professional Engineering Consulting firm headquartered in Austin, Texas.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
24	Creation Energy LLC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	1-10	4 contacts →
	Exact match “The future of energy does not look like energy today.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
25	Tg&w Engineers, INC	Exact match	Austin, TX, United StatesHQ recorded Oct 25, 2026	11-50	3 contacts →
	Exact match “Our Firm TG & W Engineers, Inc.(TG & W), located in Austin, TX, was formed in January 2010.” Recorded in the RevenueBase company graph · Oct 25, 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 “energy systems engineering services”. 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 65 energy systems engineering services based in Austin, United States

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Energy systems engineering services based in Austin, United States at a glance

As of Oct 25, 2026

41.8%Verified-email coverage

25.5Average contacts per company

1-10Median size (employees)

Oct 25, 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 65 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 “energy systems engineering services” 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 693 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 October 25, 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 systems engineering services 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 “energy systems engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy systems engineering services are there based in Austin, United States?

RevenueBase identified 65 company matches for energy systems engineering services associated with Austin, United States as of October 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?

Electric Power Engineers 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 energy systems engineering services?

Houston leads the United States with 249 company records, followed by New York (120) and Austin (65).

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 693 professional contacts with verified work emails tracked across these 65 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 October 25, 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.