Company lists · Data refreshed September 2026
Top 25 Geothermal energy operators worldwide
RevenueBase identified 626 geothermal energy operators worldwide as of September 2026 and tracks 12,399 professional contacts across them, including 4,478 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers geothermal energy operators worldwide, 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 16, 2026. Country and city lists for geothermal energy operators follow the table.
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.
The 25 largest geothermal energy operators worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,112 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,281 contacts → | ||||
Indirect evidence “With over five decades of experience, Ormat Technologies, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,242 contacts → | ||||
Partial evidence “Indonesia Geothermal Company” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 501 contacts → | ||||
Strong evidence “PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 271 contacts → | ||||
Strong evidence “Supreme Energy Group of Companies (SEML/SERD/SERB), a growing Multinational Energy Companies with its core business on renewable energy Geothermal Power Plant.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 213 contacts → | ||||
Strong evidence “Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 167 contacts → | ||||
Indirect evidence “Competitive Power Ventures (CPV) has 25 years of unprecedented success in the development and operation of highly efficient and low emitting electric generation and renewable…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 162 contacts → | ||||
Partial evidence “Depuis 2004, JP Energie Environnement développe, finance, construit et exploite des unités de production d’électricité d’origine renouvelables dans tous les domaines d’activités …” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 124 contacts → | ||||
Partial evidence “Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 118 contacts → | ||||
Strong evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 111 contacts → | ||||
Partial evidence “KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 108 contacts → | ||||
Partial evidence “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 101 contacts → | ||||
Partial evidence “Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 99 contacts → | ||||
Partial evidence “We are PT Energia Prima Nusantara, a subsidiary of Astra International Tbk – with shareholders PT United Tractors Tbk.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 93 contacts → | ||||
Partial evidence “YILDIRIM Group first entered the energy industry in 2010.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 92 contacts → | ||||
Indirect evidence “Advanced Power is a privately owned company that develops, owns, and manages modern power generation and related infrastructure projects throughout Europe and North America.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 83 contacts → | ||||
Partial evidence “Star Energy Group plc is a British energy business.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 80 contacts → | ||||
Partial evidence “PT PLN Gas & Geothermal is a subsidiary of PT PLN (Persero) which was established on January 28, 2009 to carry out the development of geothermal aspect in Indonesia with a…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 72 contacts → | ||||
Partial evidence “ENSO Energy Environment and Sustainability se dedica al desarrollo, promoción, construcción y operación de plantas de generación eléctrica y térmica.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 69 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 62 contacts → | ||||
Partial evidence “Quaise develops superhot geothermal power plants for a terawatt-scale world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 61 contacts → | ||||
Partial evidence “ARENA Green Power is an independent Renewable Energy company focused in the Development, Construction and Operation of proprietary projects and also in providing turnkey…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 60 contacts → | ||||
Indirect evidence “SVP - Samen werken aan klimaat |@Stadsverwarming | SVP is een groeiend integraal warmtebedrijf dat warmte duurzaam produceert, distribueert en levert aan ruim particuliere en…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 60 contacts → | ||||
Strong evidence “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 59 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal energy operators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names geothermal energy operators.
- Partial evidence
- Its own public description names part of geothermal energy operators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geothermal energy operators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 626 geothermal energy operators worldwide
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Geothermal energy operators worldwide at a glance
As of Sep 16, 2026Companies by employee count
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 geothermal energy operators, 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.
- Coverage
- 10 countries, largest first: the United States, Germany, France, Canada, Türkiye, the Netherlands, the United Kingdom, Spain, Switzerland, Indonesia. Country and city lists for geothermal energy operators are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “geothermal energy operators”. 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 geothermal energy operators), 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 geothermal energy operators, and records with no verified work email.
- 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, 4,478 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 16, 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.
Geothermal energy operators by location
10 lists · largest firstEvery Geothermal energy operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy operators based in the United States195
- Geothermal energy operators based in Germany85
- Geothermal energy operators based in France58
- Geothermal energy operators based in Canada54
- Geothermal energy operators based in Türkiye49
- Geothermal energy operators based in the Netherlands44
- Geothermal energy operators based in the United Kingdom44
- Geothermal energy operators based in Spain39
- Geothermal energy operators based in Switzerland31
- Geothermal energy operators based in Indonesia27
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 geothermal energy operators, 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 geothermal energy operators are there worldwide?
RevenueBase identified 626 geothermal energy operators worldwide 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?
Calpine, headquartered in Houston, tops this list with the largest team on record.
Which country has the most geothermal energy operators?
The United States leads with 195 companies, followed by Germany (85) and France (58). Every geothermal energy operators list by country and city is linked on this page.
Which city has the most geothermal energy operators?
Houston leads with 17 headquartered companies, followed by Calgary (15) and London (11).
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 4,478 verified decision-maker contacts tracked across these 626 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 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 626 geothermal energy operators worldwide. 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 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.
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Company intelligence · public preview
Top 25 geothermal energy operators worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 626 matching company records for geothermal energy operators worldwide, with 12,399 tracked contacts and 4,478 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal energy operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Calpinecalpine.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Ormat Technologies, INCormat.comHQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,242 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PT GEO Dipa Energi Perserogeodipa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 501 contacts → |
“PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Supreme Energysupreme-energy.com HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 271 contacts → |
“Supreme Energy Group of Companies (SEML/SERD/SERB), a growing Multinational Energy Companies with its core business on renewable energy Geothermal Power Plant.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 213 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Competitive Power Venturescpv.comHQ: Silver Spring, MD, United StatesReported employees: 51-200 | Silver Spring, MD, United States | 51-200 | Exact match | 167 contacts → |
“Competitive Power Ventures (CPV) has 25 years of unprecedented success in the development and operation of highly efficient and low emitting electric generation and renewable…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  JP Energie Environnementjpee.frHQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 162 contacts → |
“Depuis 2004, JP Energie Environnement développe, finance, construit et exploite des unités de production d’électricité d’origine renouvelables dans tous les domaines d’activités …” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 124 contacts → |
“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 118 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | KS Orka Renewables Pte. LTDksorka.com HQ: South Jakarta, SingaporeReported employees: 201-500 | South Jakarta, Singapore | 201-500 | Exact match | 111 contacts → |
“KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Brightcore Energybrightcoreenergy.comHQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 108 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Haliburton Geothermalhaliburtongeothermal.com HQ: Haliburton, ON, CanadaReported employees: Not recorded | Haliburton, ON, Canada | Not recorded | Exact match | 101 contacts → |
“Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | PT Energia Prima Nusantara Astra Groupepnusantara.com HQ: Jakarta Timur, IndonesiaReported employees: 501-1,000 | Jakarta Timur, Indonesia | 501-1,000 | Exact match | 99 contacts → |
“We are PT Energia Prima Nusantara, a subsidiary of Astra International Tbk – with shareholders PT United Tractors Tbk.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Yildirim Energyyildirimenerji.com.trHQ: İstanbul, TürkiyeReported employees: 51-200 | İstanbul, Türkiye | 51-200 | Exact match | 93 contacts → |
“YILDIRIM Group first entered the energy industry in 2010.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Advanced Poweradvancedpowerna.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 92 contacts → |
“Advanced Power is a privately owned company that develops, owns, and manages modern power generation and related infrastructure projects throughout Europe and North America.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | PT PLN Energi GASplnenergigas.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 51-200 | Jakarta Selatan, Indonesia | 51-200 | Exact match | 80 contacts → |
“PT PLN Gas & Geothermal is a subsidiary of PT PLN (Persero) which was established on January 28, 2009 to carry out the development of geothermal aspect in Indonesia with a…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Enso Energy Environment & Sustainabilityensoenergy.esHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 72 contacts → |
“ENSO Energy Environment and Sustainability se dedica al desarrollo, promoción, construcción y operación de plantas de generación eléctrica y térmica.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cyrq Energycyrqenergy.com HQ: Salt Lake City, UT, United StatesReported employees: 51-200 | Salt Lake City, UT, United States | 51-200 | Exact match | 69 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 62 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Arena Green Powerarenapower.comHQ: Seville, SpainReported employees: 51-200 | Seville, Spain | 51-200 | Exact match | 61 contacts → |
“ARENA Green Power is an independent Renewable Energy company focused in the Development, Construction and Operation of proprietary projects and also in providing turnkey…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  SVPsvpbv.nlHQ: Purmerend, NetherlandsReported employees: 51-200 | Purmerend, Netherlands | 51-200 | Exact match | 60 contacts → |
“SVP - Samen werken aan klimaat |@Stadsverwarming | SVP is een groeiend integraal warmtebedrijf dat warmte duurzaam produceert, distribueert en levert aan ruim particuliere en…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Rendescorendesco.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Polaris Renewable Energy INCpolarisrei.comHQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 59 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 626 company matches
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Geothermal energy operators: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
619 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geothermal energy operators by location
10 lists · largest firstEvery Geothermal energy operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy operators based in the United States195
- Geothermal energy operators based in Germany85
- Geothermal energy operators based in France58
- Geothermal energy operators based in Canada54
- Geothermal energy operators based in Türkiye49
- Geothermal energy operators based in the Netherlands44
- Geothermal energy operators based in the United Kingdom44
- Geothermal energy operators based in Spain39
- Geothermal energy operators based in Switzerland31
- Geothermal energy operators based in Indonesia27
Questions about this company list
What does Exact match mean for geothermal energy operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal energy operators did RevenueBase find worldwide?
The saved snapshot records 626 matching company records, 12,399 tracked contacts and 4,478 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 geothermal energy operators worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/geothermal-energy-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 geothermal energy operators worldwide
RevenueBase records 626 matching company records for geothermal energy operators worldwide, with 12,399 tracked contacts and 4,478 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal energy operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Calpinecalpine.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ormat Technologies, INCormat.com HQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,281 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,242 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PT GEO Dipa Energi Perserogeodipa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 501 contacts → |
“PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Supreme Energysupreme-energy.com HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 271 contacts → |
“Supreme Energy Group of Companies (SEML/SERD/SERB), a growing Multinational Energy Companies with its core business on renewable energy Geothermal Power Plant.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 213 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Competitive Power Venturescpv.com HQ: Silver Spring, MD, United StatesReported employees: 51-200 | Silver Spring, MD, United States | 51-200 | Exact match | 167 contacts → |
“Competitive Power Ventures (CPV) has 25 years of unprecedented success in the development and operation of highly efficient and low emitting electric generation and renewable…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | JP Energie Environnementjpee.fr HQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 162 contacts → |
“Depuis 2004, JP Energie Environnement développe, finance, construit et exploite des unités de production d’électricité d’origine renouvelables dans tous les domaines d’activités …” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 124 contacts → |
“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 118 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | KS Orka Renewables Pte. LTDksorka.com HQ: South Jakarta, SingaporeReported employees: 201-500 | South Jakarta, Singapore | 201-500 | Exact match | 111 contacts → |
“KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Brightcore Energybrightcoreenergy.com HQ: Armonk, NY, United StatesReported employees: 51-200 | Armonk, NY, United States | 51-200 | Exact match | 108 contacts → |
“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Haliburton Geothermalhaliburtongeothermal.com HQ: Haliburton, ON, CanadaReported employees: Not recorded | Haliburton, ON, Canada | Not recorded | Exact match | 101 contacts → |
“Haliburton Geothermal has been established to provide economical and environmental choices pertaining to geothermal in Haliburton Country.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | PT Energia Prima Nusantara Astra Groupepnusantara.com HQ: Jakarta Timur, IndonesiaReported employees: 501-1,000 | Jakarta Timur, Indonesia | 501-1,000 | Exact match | 99 contacts → |
“We are PT Energia Prima Nusantara, a subsidiary of Astra International Tbk – with shareholders PT United Tractors Tbk.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Yildirim Energyyildirimenerji.com.tr HQ: İstanbul, TürkiyeReported employees: 51-200 | İstanbul, Türkiye | 51-200 | Exact match | 93 contacts → |
“YILDIRIM Group first entered the energy industry in 2010.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Advanced Poweradvancedpowerna.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 92 contacts → |
“Advanced Power is a privately owned company that develops, owns, and manages modern power generation and related infrastructure projects throughout Europe and North America.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | PT PLN Energi GASplnenergigas.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 51-200 | Jakarta Selatan, Indonesia | 51-200 | Exact match | 80 contacts → |
“PT PLN Gas & Geothermal is a subsidiary of PT PLN (Persero) which was established on January 28, 2009 to carry out the development of geothermal aspect in Indonesia with a…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Enso Energy Environment & Sustainabilityensoenergy.es HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 72 contacts → |
“ENSO Energy Environment and Sustainability se dedica al desarrollo, promoción, construcción y operación de plantas de generación eléctrica y térmica.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cyrq Energycyrqenergy.com HQ: Salt Lake City, UT, United StatesReported employees: 51-200 | Salt Lake City, UT, United States | 51-200 | Exact match | 69 contacts → |
“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 description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 62 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Arena Green Powerarenapower.com HQ: Seville, SpainReported employees: 51-200 | Seville, Spain | 51-200 | Exact match | 61 contacts → |
“ARENA Green Power is an independent Renewable Energy company focused in the Development, Construction and Operation of proprietary projects and also in providing turnkey…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | SVPsvpbv.nl HQ: Purmerend, NetherlandsReported employees: 51-200 | Purmerend, Netherlands | 51-200 | Exact match | 60 contacts → |
“SVP - Samen werken aan klimaat |@Stadsverwarming | SVP is een groeiend integraal warmtebedrijf dat warmte duurzaam produceert, distribueert en levert aan ruim particuliere en…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Rendescorendesco.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Polaris Renewable Energy INCpolarisrei.com HQ: Toronto, ON, CanadaReported employees: 201-500 | Toronto, ON, Canada | 201-500 | Exact match | 59 contacts → |
No recorded description excerpt is available for this public record. | |||||
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Geothermal energy operators: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
619 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geothermal energy operators by location
10 lists · largest firstEvery Geothermal energy operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy operators based in the United States195
- Geothermal energy operators based in Germany85
- Geothermal energy operators based in France58
- Geothermal energy operators based in Canada54
- Geothermal energy operators based in Türkiye49
- Geothermal energy operators based in the Netherlands44
- Geothermal energy operators based in the United Kingdom44
- Geothermal energy operators based in Spain39
- Geothermal energy operators based in Switzerland31
- Geothermal energy operators based in Indonesia27
Questions about this company list
What does Exact match mean for geothermal energy operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal energy operators did RevenueBase find worldwide?
The saved snapshot records 626 matching company records, 12,399 tracked contacts and 4,478 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 geothermal energy operators worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/geothermal-energy-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗