Company lists · Data refreshed November 2026

Top 25 Microgeothermal installers worldwide

RevenueBase identified 23,181 company matches for microgeothermal installers worldwide as of November 2026 and tracks 156,056 professional contacts across them, including 40,149 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for microgeothermal installers worldwide, 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. Country and city lists for microgeothermal installers follow the table.

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
23,181Companies
156,056Contacts tracked
40,149Verified emails
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The 25 largest microgeothermal installers worldwide

Ranked by team size
Top 25 of 23,181 company matches for microgeothermal installers worldwide, 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 matchLevallois-perret, FranceHQ recorded Nov 6, 20261,001-5,0001,054 contacts →

Exact match

“A major player in the energy transition and leader in home services, PROXISERVE provides its customers with innovative solutions enabling them to reduce their energy consumption…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLiverpool, United KingdomHQ recorded Nov 6, 20261,001-5,0001,048 contacts →

Exact match

“Clarke Energy, a Rehlko company, specialises in energy efficient, low carbon and flexible energy systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchProvo, UT, United StatesHQ recorded Nov 6, 2026501-1,000945 contacts →

Exact match

“Ion Solar is a premium, full-service solar provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,000884 contacts →

Exact match

“Raychem is a world-leading provider of heat-trace management systems for infrastructure, industrial, commercial and residential buildings, with operations globally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWarwick, United KingdomHQ recorded Nov 6, 20261,001-5,000865 contacts →

Exact match

“We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLelystad, NetherlandsHQ recorded Nov 6, 20261,001-5,000813 contacts →

Exact match

“Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBlackburn, United KingdomHQ recorded Nov 6, 2026501-1,000771 contacts →

Exact match

“Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchStockholm, SwedenHQ recorded Nov 6, 2026201-500593 contacts →

Exact match

“Aira is the next generation home energy champion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026501-1,000544 contacts →

Exact match

“Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWestborough, NJ, United StatesHQ recorded Nov 6, 2026201-500496 contacts →

Exact match

“NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchZwolle, NetherlandsHQ recorded Nov 6, 20261,001-5,000464 contacts →

Exact match

“Welkom in de boeiende wereld van de energietransitie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSanta Ana, CA, United StatesHQ recorded Nov 6, 20261,001-5,000464 contacts →

Exact match

“EnergyAid acquired Titan Solar Power's intellectual property (IP) in March of 2025 through bankruptcy court.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Luis Obispo, CA, United StatesHQ recorded Nov 6, 2026n/a398 contacts →

Exact match

“Founded in 1997, REC Solar has emerged as a leader in the solar industry, installing 800+ solar and storage solutions for commercial and public sector customers nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 2026201-500393 contacts →

Exact match

“https://ourworldenergy.com/”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGloucester, United KingdomHQ recorded Nov 6, 2026501-1,000360 contacts →

Exact match

“With over 850 staff, we are one of the UK’s leading electrical contractors and solar PV installers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchEl Cajon, CA, United StatesHQ recorded Nov 6, 2026501-1,000343 contacts →

Exact match

“Ranked #1 in Solar + Battery Installation in America by "Solar Power World" Go Solar American Style!#1 Veteran Owned Solar Company in California Solar Panels.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026201-500326 contacts →

Exact match

“At Applied Energy Technologies, we are redefining the energy landscape with cost-efficient, distributed, and sustainable energy solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMelbourne, AustraliaHQ recorded Nov 6, 2026n/a298 contacts →

Exact match

“Sunrun Solar is an Australian owned and operated fastest growing company providing latest technology PV solar system at very affordable price with guaranteed quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact 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
21Exact matchVerona, WI, United StatesHQ recorded Nov 6, 202651-200269 contacts →

Exact match

“Everlight Solar provides homeowners with simple and affordable clean energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCambridge, MA, United StatesHQ recorded Nov 6, 2026n/a269 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchKehlen, LuxembourgHQ recorded Nov 6, 2026201-500262 contacts →

Exact match

“Electrical installations in buildings Heating Climatisation Facility Management”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMedford, IA, United StatesHQ recorded Nov 6, 202651-200259 contacts →

Exact match

“Founded in 2017, Purelight Power has quickly grown to be one of the nations largest residential solar installer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 2026201-500258 contacts →

Exact match

“Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid.”

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

Showing 25 of 23,181 microgeothermal installers worldwide

See the full list, filter by size, metro and specialty, and access 40,149 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Microgeothermal installers worldwide at a glance

As of Nov 6, 2026
25.7%Verified-email coverage
6.7Average contacts per company
1-10Median size (employees)
0.8%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
12,479
11-50
7,815
51-200
1,695
201-500
282
501-1,000
55
1,001-5,000
35
5,001-10,000
9
10001+
9

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for microgeothermal installers are linked below.
What qualifies
Company records worldwide whose business descriptions match “microgeothermal installers” 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. 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 40,149 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.

Microgeothermal installers by location

53 lists · largest first

Every Microgeothermal installers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “microgeothermal installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many microgeothermal installers are there worldwide?

RevenueBase identified 23,181 company matches for microgeothermal installers worldwide 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 country has the most microgeothermal installers?

The United States leads with 3,200 companies, followed by the United Kingdom (2,588) and France (1,941). Every microgeothermal installers list by country and city is linked on this page.

Which city has the most microgeothermal installers?

London leads with 190 company records, followed by Madrid (101) and Houston (70).

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 40,149 professional contacts with verified work emails tracked across these 23,181 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.