Company lists · Data refreshed November 2026

Top 25 Geothermal feasibility study providers based in the United States

RevenueBase identified 89 company matches for geothermal feasibility study providers associated with the United States as of November 2026 and tracks 2,219 professional contacts across them, including 1,147 with verified work emails. Houston is the largest hub.

This list covers company matches for geothermal feasibility study providers associated with the 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 November 6, 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 Nov 6, 2026 How this list was built
89Companies
2,219Contacts tracked
1,147Verified emails
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The 25 largest geothermal feasibility study providers based in the United States

Ranked by team size
Top 25 of 89 company matches for geothermal feasibility study providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchReno, NV, United StatesHQ recorded Nov 6, 20261,001-5,0001,328 contacts →

Exact match

“Clean, reliable energy solutions provided by geothermal power, recovered energy, and energy storage solutions are our expertise, commitment, and focus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHouston, CA, United StatesHQ recorded Nov 6, 202651-200285 contacts →

Exact match

“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNew Brighton, MN, United StatesHQ recorded Nov 6, 202611-5055 contacts →

Exact match

“Darcy Solutions is on a mission to put Geothermal Everywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“XGS Energy is a geothermal energy company founded and headquartered in Palo Alto, CA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDes Plaines, IL, United StatesHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Projeo provides geoscience and reservoir engineering technical expertise, experienced operational and field supervision services, and integrated project management for your…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHouston, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Project InnerSpace (InnerSpace) is a multi-phase initiative focused on accelerating global geothermal prospecting and development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchReno, NV, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Open Mountain Energy combines its geothermal and project development expertise with Kaishan Group's power plant technologies and manufacturing to form a cutting-edge industry…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Our mission is to transform the heating & cooling of buildings, using geothermal energy to radically reduce costs for people and the environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“About GreenFire Energy GreenFire Energy engineers next-generation geothermal systems designed for real-world operating conditions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBakersfield, CA, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchReno, CA, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Geologica excels in Geothermal Resource Consulting by providing high quality global geothermal resource exploration, development and assessment services for private and public…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGermantown, United StatesHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Dewhurst Group (DG) is an energy exploration and development company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLawrence, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Geothermal and Environmental Drilling Environmental Site Assessments Phase I & II Site Remediation Services Groundwater Monitoring”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchFallon, NV, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“We specialize in: Angle or Vertical, Dual Tube/ RC and Conventional Rotary Drilling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“In the 30 years of operation, Chesapeake Geosystems has earned a reputation as a geothermal contracting firm that delivers projects on time and on budget.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPalm Desert, CA, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Geothermal Resource Group, Inc.(GRG) provides complete, cost-effective solutions for your resource engineering needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBallston Spa, NY, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Aztech Geothermal, LLC offers a comprehensive solution for renewable geothermal heating and cooling systems in residential and commercial buildings with recognized expertise in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHouston, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Unlike other start-ups in the geothermal industry, we do not focus on a single technology or opportunity but rather manage a risk balanced portfolio of different power producing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPort Richey, FL, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Egg Geo currently focuses his professional efforts on geothermal energy utility efforts, geothermal exchange implementation, ground water exchange related permitting, feasibility…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Veizades and Associates, INC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Indiana Geothermal provides geothermal products, custom system designs and hundreds of earth loop installations each year.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBethlehem, CT, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Founded in the mid-1960s, Connecticut Wells has grown from a single-rig water well contractor into a state-of-the-art geothermal well drilling operation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“GeoFrame was founded with the objective to transform the geothermal industry by de-risking and streamlining the entire project development process from early exploration through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHoneoye Falls, NY, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Your Geothermal Experts Since 2009 Transforming energy solutions in Western New York.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 89 geothermal feasibility study providers based in the United States

See the full list, filter by size, metro and specialty, and access 1,147 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal feasibility study providers based in the United States at a glance

As of Nov 6, 2026
51.7%Verified-email coverage
24.9Average contacts per company
11-50Median size (employees)
11.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
40
51-200
4
1,001-5,000
1

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 89 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 the United States whose business descriptions match “geothermal feasibility study providers” 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 1,147 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 November 6, 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.

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 “geothermal feasibility study providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal feasibility study providers are there based in the United States?

RevenueBase identified 89 company matches for geothermal feasibility study providers associated with the United States as of November 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?

Ormat Technologies, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geothermal feasibility study providers?

Houston leads with 10 company records, followed by Reno (5) and Austin (4).

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 1,147 professional contacts with verified work emails tracked across these 89 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 November 6, 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.