Company lists · Data refreshed September 2026

Top 25 Renewable energy consulting firms based in Austin, United States

Name: Renewable energy 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 5, 2026 67 companies tracked

RevenueBase identified 67 renewable energy consulting firms headquartered in Austin, United States as of September 2026 and tracks 2,177 professional contacts across them, including 480 with verified work emails. Houston is the largest hub.

This list covers renewable energy 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

67Companies

2,177Contacts tracked

480Verified emails

Explore all 67 companies → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 67 renewable energy consulting firms based in Austin, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	OLAPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	n/a	1,145
	“OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: company website · checked Sep 5, 2026
2	Electric Power EngineersIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	501-1,000	630
	“Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: company website · checked Sep 5, 2026
3	Energy Renewal Partners, LLCPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	30
	“The mission of Energy Renewal Partners is to be a partner to our clients focused on delivering successful projects.” Source: company website · checked Sep 5, 2026
4	Dastur EnergyPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	22
	“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: company website · checked Sep 5, 2026
5	Axis SolarIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	21
	“Axis Solar is your trusted partner for engineering, procurement, and construction of commercial solar systems.” Source: company website · checked Sep 5, 2026
6	The Power Company USA LLCStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	20
	“The Power Company is a professional energy consulting firm whose mission is to reduce our clients' energy expenses.” Source: company website · checked Sep 5, 2026
7	Longevity Partners USAPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	16
	“Longevity Partners is a multidisciplinary energy and sustainability consultancy and investment business.” Source: company website · checked Sep 5, 2026
8	Blue Ocean EnergyStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	13
	“Blue Ocean Energy is an energy consulting firm located in Austin, Texas.” Source: company website · checked Sep 5, 2026
9	Industrial SUNStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	11-50	8
	“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: company website · checked Sep 5, 2026
10	Energiekontor US INCPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	51-200	7
	“For the last 25 years, Energiekontor has stood for a sound approach to business and a wealth of experience in wind power.” Source: company website · checked Sep 5, 2026
11	Open Road RenewablesStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	7
	“Renewable energy company focused on development of utility-scale clean energy projects in the United States.” Source: company website · checked Sep 5, 2026
12	Thunder Said EnergyPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	6
	“Thunder Said Energy is a research firm focused on energy technologies and energy transition.” Source: company website · checked Sep 5, 2026
13	Energy BeesStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	6
	“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.” Source: company website · checked Sep 5, 2026
14	Ideasmiths LLCPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	5
	“IdeaSmiths has a deep and broad understanding of energy systems.” Source: company website · checked Sep 5, 2026
15	Creation Energy LLCPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	5
	“The future of energy does not look like energy today.” Source: company website · checked Sep 5, 2026
16	Divergent SolarPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	5
	“Divergent Solar is a top tier brokerage that helps homeowners and businesses save thousands by switching to sustainable energy.” Source: company website · checked Sep 5, 2026
17	Affinity EngineeringStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	5
	“Affinity Engineering provides energy engineering and consulting services to regulated utilities and large energy users.” Source: company website · checked Sep 5, 2026
18	Osiyo Renewables LLCStrong evidence	Austin, United StatesHQ checked Sep 5, 2026	1-10	4
	“Developing and investing in renewable energy projects across the Americas; serving corporate and institutional clients with customized, efficient clean energy solutions” Source: company website · checked Sep 5, 2026
19	Goff PolicyPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	4
	“Founded in 2019 by Eric Goff, Goff Policy helps clients navigate complex issues and launch projects that shape the future of energy and infrastructure in Texas and beyond.” Source: company website · checked Sep 5, 2026
20	Aeterna Environmental LLCPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	3
	“An environmental consulting firm dedicated to leveraging government funding for your organization's growth, improve brand image, and enhance sustainability.” Source: company website · checked Sep 5, 2026
21	Excellent For Energy ConsultancyStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	3
	“Excellent for Energy Consultancy is a US company located in Austin, Texas provides consulting energy services, power system studies, industrial solutions and advanced training.” Source: company website · checked Sep 5, 2026
22	M3ridianStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	1
	“M3ridian provides purpose driven project management for owners and developers across major industries including renewable energy, heavy civil infrastructure, power transmission…” Source: company website · checked Sep 5, 2026
23	Rebalance Energy StrategyPartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	1
	“Rebalance Energy Strategy is a consultancy firm dedicated to advising forward-thinking utility leaders, regulators, and clean energy industry stakeholders, helping them make sound…” Source: company website · checked Sep 5, 2026
24	Power Forward, LLCIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	1
	“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: company website · checked Sep 5, 2026
25	Acros EnergyStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1-10	1
	“On the path toward a future powered by renewable energies, we strive to provide our clients with exceptional engineering services for their projects.” Source: company website · checked Sep 5, 2026

Showing 25 of 67 renewable energy consulting firms based in Austin, United States

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Renewable energy consulting firms based in Austin, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

HoustonLargest hub · 152 HQs

Contacts with mobile numbers

Sep 5, 2026Data 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 this city, so it is reported there. Company counts and contact totals on this page are exact for Austin, over 67 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 renewable energy consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “renewable energy consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable energy 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 an evidence 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, 480 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 5, 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.

Renewable energy consulting firms by metro in the United States

Renewable energy consulting firms in Houston152
Renewable energy consulting firms in New York120
Renewable energy consulting firms in Denver71
Renewable energy consulting firms in Austin67
Renewable energy consulting firms in Chicago65
Renewable energy consulting firms in Washington58
Renewable energy consulting firms in San Diego56
Renewable energy consulting firms in Dallas51
Renewable energy consulting firms in Los Angeles51
Renewable energy consulting firms in Portland43
Renewable energy consulting firms in San Francisco40
Renewable energy consulting firms in Boston36
Renewable energy consulting firms in Atlanta33
Renewable energy consulting firms in Sacramento27
Renewable energy consulting firms in Phoenix26
Renewable energy consulting firms in Charlotte25
Renewable energy consulting firms in Las Vegas25
Renewable energy consulting firms in Miami25

Frequently asked

How many renewable energy consulting firms are there based in Austin, United States?

RevenueBase identified 67 renewable energy 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?

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

Which city has the most renewable energy consulting firms?

Houston leads with 152 headquartered companies, followed by New York (120) and Denver (71).

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 480 verified decision-maker contacts tracked across these 67 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 5, 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.