Company lists · Data refreshed September 2026

Top 25 Energy engineering consulting firms based in Austin, United States

Name: Energy engineering consulting 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 24, 2026 99 companies tracked

RevenueBase identified 99 energy engineering consulting firms headquartered in Austin, United States as of September 2026 and tracks 3,733 professional contacts across them, including 1,943 with verified work emails. Across the United States, Houston is the largest hub for this category (298 companies); Austin has 99.

This list covers energy engineering consulting firms 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 24, 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 24, 2026 86% judged on-target in blind review

99Companies

3,733Contacts tracked

1,943Verified emails

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The 25 largest energy engineering consulting firms based in Austin, United States

Ranked by team size

Top 25 of 99 energy engineering consulting firms based in Austin, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to energy engineering consulting firms: 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	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,121 contacts →
	Partial evidence “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Source: RevenueBase Database · checked Sep 24, 2026
2	Electric Power Engineers	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	501-1,000	630 contacts →
	Partial evidence “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: RevenueBase Database · checked Sep 24, 2026
3	EEA Consulting Engineers	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	51-200	157 contacts →
	Partial evidence “EEA Consulting Engineers is a full-service mechanical, electrical and plumbing (MEP)consulting firm serving new and existing facilities in all market sectors.” Source: RevenueBase Database · checked Sep 24, 2026
4	MEP Engineering, INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	77 contacts →
	Indirect evidence “Over the course of our firm’s 28-year history, MEP has focused on cultivating a team which is friendly, approachable, and responsive.” Source: RevenueBase Database · checked Sep 24, 2026
5	Lonquist & Co., LLC	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	51-200	56 contacts →
	Strong evidence “Petroleum Engineering & Energy Advisors - With the Lonquist team, you have access to some of the most experienced and skilled professionals in the business.” Source: RevenueBase Database · checked Sep 24, 2026
6	BEE	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	41 contacts →
	Strong evidence “Bee® (Building energy efficiency) is a building and facility energy engineering firm.” Source: RevenueBase Database · checked Sep 24, 2026
7	Baer Engineering & Environmental Consulting, INC	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	32 contacts →
	Strong evidence “About Baer Engineering and Environmental Consulting, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
8	BIG RED DOG Engineering Consulting	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	501-1,000	31 contacts →
	Partial evidence “BIG RED DOG (BRD) is a Texas-based engineering firm that specializes in Civil, MEP, Structural, Traffic, and Transportation Engineering for real estate, infrastructure, and…” Source: RevenueBase Database · checked Sep 24, 2026
9	Energy Renewal Partners, LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	30 contacts →
	Partial evidence “The mission of Energy Renewal Partners is to be a partner to our clients focused on delivering successful projects.” Source: RevenueBase Database · checked Sep 24, 2026
10	Harris Energy Solutions LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	29 contacts →
	Partial evidence “HES has extensive experience and expertise in all aspects of energy management, including energy efficiency analysis, energy master planning, alternative energy sources, and…” Source: RevenueBase Database · checked Sep 24, 2026
11	TOM Green & Company Engineers, INC	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	25 contacts →
	Partial evidence “We have more than three decades of experience in MEP design, consulting, commissioning, planning and analysis.” Source: RevenueBase Database · checked Sep 24, 2026
12	BAY & Associates, INC	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	24 contacts →
	Partial evidence “We are engineers who design mechanical, electrical, and plumbing systems with a focus on sustainability and energy efficiency.” Source: RevenueBase Database · checked Sep 24, 2026
13	Dastur Energy	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 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 24, 2026
14	SQ Environmental, LLC	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
15	Axis Solar	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Partial evidence “Axis Solar is your trusted partner for engineering, procurement, and construction of commercial solar systems.” Source: RevenueBase Database · checked Sep 24, 2026
16	The Power Company USA LLC	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	20 contacts →
	Strong evidence “The Power Company is a professional energy consulting firm whose mission is to reduce our clients' energy expenses.” Source: RevenueBase Database · checked Sep 24, 2026
17	Analemma Group	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	19 contacts →
	Strong evidence “Analemma Group delivers energy-efficient MEP engineering services tailored to the needs of architects, engineers, and building owners.” Source: RevenueBase Database · checked Sep 24, 2026
18	Aptus Engineering	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	16 contacts →
	Strong evidence “APTUS Engineering is a full service Mechanical, Electrical and Plumbing (MEP) engineering consulting company specializing in Mechanical, Electrical & Plumbing Engineering…” Source: RevenueBase Database · checked Sep 24, 2026
19	Longevity Partners USA	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	16 contacts →
	Partial evidence “Longevity Partners is a multidisciplinary energy and sustainability consultancy and investment business.” Source: RevenueBase Database · checked Sep 24, 2026
20	Waterloo MEP Engineering	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	15 contacts →
	Partial evidence “Waterloo\|MEP Engineering, LLC is a forward-thinking mechanical, electrical, and plumbing engineering firm focused on delivering superior design solutions with attentive client…” Source: RevenueBase Database · checked Sep 24, 2026
21	INS Engineering	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Strong evidence “INS Engineering is a professional engineering firm providing engineering services, including system models, studies, and designs for transmission, distribution, and energy systems.” Source: RevenueBase Database · checked Sep 24, 2026
22	Blue Ocean Energy	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1-10	13 contacts →
	Strong evidence “Blue Ocean Energy is an energy consulting firm located in Austin, Texas.” Source: RevenueBase Database · checked Sep 24, 2026
23	PGH Petroleum & Environmental Engineers, LLC	Strong evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	12 contacts →
	Strong evidence “PGH Petroleum & Environmental Engineers, LLC, a GAI Company, provides petroleum engineering, litigation support, and permitting and regulatory consulting services for oil and gas…” Source: RevenueBase Database · checked Sep 24, 2026
24	ACR Engineering INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
25	Pickett Kelm And Associates INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 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: energy engineering consulting firms. 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 energy engineering consulting firms.
Partial evidence: Its own public description names part of energy engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy engineering consulting firms. 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 99 energy engineering consulting firms based in Austin, United States

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Energy engineering consulting firms based in Austin, United States at a glance

As of Sep 24, 2026

52.0%Verified-email coverage

37.7Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 99 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 energy engineering consulting firms, 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 “energy engineering consulting firms”. 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 energy engineering consulting firms), 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 energy engineering consulting firms, 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, 1,943 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 24, 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.

Energy engineering consulting firms 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 energy engineering consulting firms, 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 energy engineering consulting firms are there based in Austin, United States?

RevenueBase identified 99 energy engineering consulting firms 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?

Clearesult, headquartered in Austin, tops this list with the largest team on record.

Which city in the United States has the most energy engineering consulting firms?

Houston leads the United States with 298 headquartered companies, followed by New York (190) and Austin (99).

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 1,943 verified decision-maker contacts tracked across these 99 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 24, 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.