Company lists · Data refreshed September 2026

Top 25 Geothermal cooperatives based in the United States

RevenueBase identified 323 company matches for geothermal cooperatives associated with the United States as of September 2026 and tracks 8,244 professional contacts across them, including 4,360 with verified work emails. Houston is the largest hub.

This list covers company matches for geothermal cooperatives 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 September 20, 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 Sep 20, 2026 How this list was built
323Companies
8,244Contacts tracked
4,360Verified emails
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The 25 largest geothermal cooperatives based in the United States

Ranked by team size
Top 25 of 323 company matches for geothermal cooperatives based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchHouston, TX, United StatesHQ recorded Sep 20, 20261,001-5,0002,112 contacts →

Exact match

“A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchReno, NV, United StatesHQ recorded Sep 20, 20261,001-5,0001,281 contacts →

Exact match

“With over five decades of experience, Ormat Technologies, Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchFort Collins, CO, United StatesHQ recorded Sep 20, 2026201-500299 contacts →

Exact match

“Platte River Power Authority is a not-for-profit, community-owned public power utility that generates and delivers safe, reliable, environmentally responsible and financially…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchDes Moines, IA, United StatesHQ recorded Sep 20, 2026501-1,000218 contacts →

Exact match

“BHE Renewables delivers sustainable energy solutions for customers and communities by producing renewable energy for both the wholesale market and for customers under long-term…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchHouston, CA, United StatesHQ recorded Sep 20, 202651-200213 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 · Sep 20, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200152 contacts →

Exact match

“We believe the future of energy is green and it is our mission to make green energy affordable for everyone.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchPalmer, AK, United StatesHQ recorded Sep 20, 2026201-500126 contacts →

Exact match

“Founded in 1941, Matanuska Electric Association, Inc.(MEA), is Alaska’s oldest existing and second-largest electric cooperative.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchIndianapolis, IN, United StatesHQ recorded Sep 20, 202651-200120 contacts →

Exact match

“Wabash Valley Power Alliance (WVPA) is a not-for-profit generation and transmission cooperative created out of the need for reliable, affordable electricity in America's heartland.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchMount Kisco, NY, United StatesHQ recorded Sep 20, 202651-200118 contacts →

Exact match

“Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchArmonk, NY, United StatesHQ recorded Sep 20, 202651-200108 contacts →

Exact match

“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchRoseville, CA, United StatesHQ recorded Sep 20, 202651-200103 contacts →

Exact match

“The Northern California Power Agency (NCPA), a California Joint Action Agency, was established in 1968 by a consortium of locally owned electric utilities to make joint…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLos Angeles, CA, United StatesHQ recorded Sep 20, 202651-200101 contacts →

Exact match

“We believe in a clean energy future that is local, where communities are empowered and customers are given a choice about the source of their energy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchGreenwood, DE, United StatesHQ recorded Sep 20, 202651-20080 contacts →

Exact match

“Delaware Electric Cooperative (DEC) is the only not-for-profit electric cooperative in the State of Delaware.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchPahrump, NV, United StatesHQ recorded Sep 20, 202651-20080 contacts →

Exact match

“Valley Electric Association (VEA) is a member-owned electricity/communications cooperative headquartered in Pahrump.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 20, 202651-20069 contacts →

Exact match

“With over a decade of experience in the development of clean, efficient renewable energy facilities, Cyrq owns, operates and develops geothermal and solar energy-based power…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchTroy, MO, United StatesHQ recorded Sep 20, 202651-20067 contacts →

Exact match

“Cuivre River Electric Cooperative (CREC) is headquartered in Troy, Missouri, with a branch office in Lake Saint Louis, Missouri.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchHouston, MA, United StatesHQ recorded Sep 20, 202651-20062 contacts →

Exact match

“Quaise develops superhot geothermal power plants for a terawatt-scale world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchDafter, MI, United StatesHQ recorded Sep 20, 202651-20058 contacts →

Exact match

“Cloverland Electric Cooperative is a not-for-profit, member-owned utility focused on delivering exceptional services through the generation and safe delivery of reliable and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchPortland, MI, United StatesHQ recorded Sep 20, 202651-20058 contacts →

Exact match

“At HomeWorks Tri-County Electric Cooperative, we constantly seek to bring energy, comfort, and communication solutions to our member-owners and customers, to enhance their quality…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchJourdanton, TX, United StatesHQ recorded Sep 20, 202651-20057 contacts →

Exact match

“San Miguel Electric Cooperative, Inc.(San Miguel) was created on February 17, 1977, under the Rural Electric Cooperative Act of the State of Texas, for the purpose of owning and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchMount Gilead, OH, United StatesHQ recorded Sep 20, 202651-20054 contacts →

Exact match

“Consolidated Cooperative, Inc, is an energy and communications company that provides services that make life better for its members.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLaurel, MD, United StatesHQ recorded Sep 20, 202651-20052 contacts →

Exact match

“We at Allied Well Drilling are a full service commercial and residential gethermal heating/cooling system installer, specializing in vertically drilled closed loop systems.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchHumboldt, IA, United StatesHQ recorded Sep 20, 202651-20049 contacts →

Exact match

“Corn Belt Power Cooperative is a Touchstone Energy cooperative.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchBenson, AZ, United StatesHQ recorded Sep 20, 202651-20044 contacts →

Exact match

“Arizona Electric Power Cooperative, Inc.(AEPCO) is one of two electric cooperatives that are part of Arizona G&T Cooperatives.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5042 contacts →

Exact match

“Groundswell builds community power to strengthen local resilience for everyone and cut electricity bills in half for our neighbors who need savings the most.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 323 geothermal cooperatives based in the United States

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Geothermal cooperatives based in the United States at a glance

As of Sep 20, 2026
52.9%Verified-email coverage
25.5Average contacts per company
11-50Median size (employees)
3.4%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
149
11-50
113
51-200
55
201-500
3
501-1,000
1
1,001-5,000
2

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 323 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 cooperatives” 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 4,360 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 September 20, 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 cooperatives”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal cooperatives are there based in the United States?

RevenueBase identified 323 company matches for geothermal cooperatives associated with the United States as of September 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?

Calpine tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geothermal cooperatives?

Houston leads with 11 company records, followed by Austin (7) and Reno (6).

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 4,360 professional contacts with verified work emails tracked across these 323 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 September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 323 geothermal cooperatives based in the United States. Start with a free account, no credit card.

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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.