Company lists · Data refreshed September 2026

Top 25 Wind farm permitting consultants based in the United States

RevenueBase identified 146 wind farm permitting consultants headquartered in the United States as of September 2026 and tracks 1,793 professional contacts across them, including 678 with verified work emails. Houston is the largest hub.

This list covers wind farm permitting consultants headquartered in the 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 22, 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 22, 2026 86% judged on-target in blind review
146Companies
1,793Contacts tracked
678Verified emails
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The 25 largest wind farm permitting consultants based in the United States

Ranked by team size
Top 25 of 146 wind farm permitting consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to wind farm permitting consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceRocklin, CA, United StatesHQ checked Sep 22, 202651-200166 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
2Indirect evidenceCentennial, CO, United StatesHQ checked Sep 22, 202651-200121 contacts →

Indirect evidence

“Halker Consulting provides custom engineered and configured services in Project Assessment and Planning, Engineering and Design, & Consulting and Implementation Guidance.”

Source: RevenueBase Database · checked Sep 22, 2026
3Partial evidenceSan Diego, CA, United StatesHQ checked Sep 22, 202651-200110 contacts →

Partial evidence

“Gemini Energy Services is an independent service provider to the Wind Industry.”

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceMaynard, MA, United StatesHQ checked Sep 22, 202651-20087 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceJacksonville, FL, United StatesHQ checked Sep 22, 202651-20070 contacts →

Indirect evidence

“Environmental Services, Inc.(ESI) is a leading full service environmental consulting firm with national and international experience.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceLogan, UT, United StatesHQ checked Sep 22, 202611-5044 contacts →

Indirect evidence

“BIO-WEST is a full-service environmental planning and consulting firm offering a wide variety of services to private clients and government agencies since 1976.”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 22, 202611-5040 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
8Strong evidenceGolden, CO, United StatesHQ checked Sep 22, 202611-5033 contacts →

Strong evidence

“ArcVera Renewables, a Bureau Veritas company, is a leading consultancy firm providing finance-grade commercial and technical services for wind, solar, energy storage and hybrid…”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceChicago, IL, United StatesHQ checked Sep 22, 202651-20033 contacts →

Indirect evidence

“Who we are: High Five Solar is a one stop solution provider for solar companies and professionals throughout the US.”

Source: RevenueBase Database · checked Sep 22, 2026
10Strong evidenceMidland, TX, United StatesHQ checked Sep 22, 202651-20032 contacts →

Strong evidence

“Hilliard Energy has developed a high degree of skill and knowledge pertaining to all facets of wind farm development, transmission right-of-way and pipeline right-of-way services.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceEl Segundo, CA, United StatesHQ checked Sep 22, 202611-5031 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidenceBoswell, IN, United StatesHQ checked Sep 22, 202611-5026 contacts →

Indirect evidence

“At Auxilius, we focus on providing services better and more efficiently.”

Source: RevenueBase Database · checked Sep 22, 2026
13Strong evidenceBuffalo, WY, United StatesHQ checked Sep 22, 202611-5022 contacts →

Strong evidence

“Absaroka Energy and Environmental Solutions, LLC is regulatory compliance and permitting consultancy operating in the Rocky Mountain region.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceU.s. East Coast, United StatesHQ checked Sep 22, 202651-20022 contacts →

Indirect evidence

“WindServe Marine is a premier U.S.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceMonterey, CA, United StatesHQ checked Sep 22, 202611-5020 contacts →

Indirect evidence

“DD & A is an award-winning, State of California-certified Small and Woman-owned business.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceCarlsbad, NM, United StatesHQ checked Sep 22, 202611-5020 contacts →

Indirect evidence

“Environmental Services: Since 2013 CEHMM has provided environmental consulting services to the industry for expediting permit authorizations regarding work on state and federal…”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceHouston, TX, United StatesHQ checked Sep 22, 202611-5019 contacts →

Indirect evidence

“At EOSolutions, we know you want your operations to stay in compliance.”

Source: RevenueBase Database · checked Sep 22, 2026
18Indirect evidenceBoulder, CO, United StatesHQ checked Sep 22, 202611-5018 contacts →

Indirect evidence

“EMPSi is a nation-wide consulting firm committed to changing how we think about the world by solving complex environmental problems.”

Source: RevenueBase Database · checked Sep 22, 2026
19Indirect evidenceTempe, AZ, United StatesHQ checked Sep 22, 202611-5016 contacts →

Indirect evidence

“Galileo Project, LLC provides agency project managers with exceptional project management and environmental consulting services.”

Source: RevenueBase Database · checked Sep 22, 2026
20Partial evidenceAnchorage, AK, United StatesHQ checked Sep 22, 202611-5016 contacts →

Partial evidence

“Owl Ridge Natural Resource Consultants, Inc.(Owl Ridge) was formed in 2012 as a small business enterprise to provide a full range of environmental consulting services including…”

Source: RevenueBase Database · checked Sep 22, 2026
21Indirect evidenceFlagstaff, AZ, United StatesHQ checked Sep 22, 202611-5016 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
22Indirect evidenceEvansville, IN, United StatesHQ checked Sep 22, 202611-5016 contacts →

Indirect evidence

“We at Crane Environmental Services, LLC believe that the environment is our greatest asset.”

Source: RevenueBase Database · checked Sep 22, 2026
23Partial evidenceAyer, MA, United StatesHQ checked Sep 22, 202611-5013 contacts →

Partial evidence

“GPR is a well-established (since 1996), privately-owned firm offering a wide variety of Civil Engineering design and permitting services, along with Environmental permitting…”

Source: RevenueBase Database · checked Sep 22, 2026
24Indirect evidenceLaramie, WY, United StatesHQ checked Sep 22, 202611-5013 contacts →

Indirect evidence

“HWA Wildlife Consulting, LLC,(HWA; formerly Hayden-Wing Associates) has been a leading provider of regulatory compliance, ecological and applied science research, and technical…”

Source: RevenueBase Database · checked Sep 22, 2026
25Indirect evidenceSan Bernardino, CA, United StatesHQ checked Sep 22, 202611-5012 contacts →

Indirect evidence

“Lilburn Corporation is a multi-disciplinary consulting firm providing a wide range of services in environmental planning and natural resource management.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 146 wind farm permitting consultants based in the United States

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Wind farm permitting consultants based in the United States at a glance

As of Sep 22, 2026
37.8%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
5.5%Largest-city concentration · Houston
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
45
51-200
11

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 146 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 wind farm permitting consultants, 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 the United States whose own description of what they do matches “wind farm permitting consultants”. 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 wind farm permitting consultants), 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 wind farm permitting consultants, and records with no verified work email. Companies headquartered outside United States 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, 678 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 22, 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.

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 wind farm permitting consultants, 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 wind farm permitting consultants are there based in the United States?

RevenueBase identified 146 wind farm permitting consultants headquartered in the 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?

Ecorp Consulting, INC, headquartered in Rocklin, tops this list with the largest team on record.

Which city has the most wind farm permitting consultants?

Houston leads with 8 headquartered companies, followed by San Diego (6) and Denver (4).

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 678 verified decision-maker contacts tracked across these 146 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 22, 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.