Company lists · Data refreshed October 2026
Top 25 Geothermal energy startups worldwide
RevenueBase identified 783 company matches for geothermal energy startups worldwide as of October 2026 and tracks 23,455 professional contacts across them, including 6,987 with verified work emails. The United States is the largest market and Calgary the largest hub.
This list covers company matches for geothermal energy startups 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 October 13, 2026. Country and city lists for geothermal energy startups 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.
The 25 largest geothermal energy startups worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,769 contacts → | ||||
Exact match “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 2,112 contacts → | ||||
Exact match “Kenya Electricity Generating Company PLC (KenGen) is the leading electric power generating company in East Africa.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 2,110 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 1,856 contacts → | ||||
Exact match “The Energy Development Corporation (EDC) is a pioneer in generating 100% clean, renewable, and reliable power as an electricity supplier in the Philippines for over 40 years.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 1,420 contacts → | ||||
Exact match “Indonesia Geothermal Company” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 1,298 contacts → | ||||
Exact match “With over five decades of experience, Ormat Technologies, Inc.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 586 contacts → | ||||
Exact match “PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 485 contacts → | ||||
Exact match “Pour une énergie propre et mieux utilisée Notre mission : fournir des solutions énergétiques performantes et économiques, tout en minimisant l'impact environnemental.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 301 contacts → | ||||
Exact match “Supreme Energy Group of Companies (SEML/SERD/SERB), a growing Multinational Energy Companies with its core business on renewable energy Geothermal Power Plant.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 10 | 270 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 152 contacts → | ||||
Exact match “Aboitiz Power Corporation (AboitizPower, AP) is a leader in the Philippine Electric Power Industry with a portfolio of assets located across the country.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 141 contacts → | ||||
Exact match “WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 136 contacts → | ||||
Exact match “RENOVA is an independent renewable energy developer and power producer.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 14 | 132 contacts → | ||||
Exact match “ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 15 | 130 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 · Oct 13, 2026 · View company records in RevenueBase | |||||
| 16 | 123 contacts → | ||||
Exact match “Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 17 | 119 contacts → | ||||
Exact match “KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 18 | 105 contacts → | ||||
Exact match “Powering the future with the Earth’s hidden heat.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 19 | 88 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 20 | 82 contacts → | ||||
Exact match “Eavor™ is an Alberta-based tech company that has invented a new geothermal power generation technology that overcomes all the traditional roadblocks of geothermal.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 21 | 80 contacts → | ||||
Exact match “Star Energy Group plc is a British energy business.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 22 | 76 contacts → | ||||
Exact match “We are Breaking Barriers in Geothermal At GADrilling, we are changing what is possible in deep drilling.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 23 | 75 contacts → | ||||
Exact match “HS Orka is the largest privately owned power company in Iceland.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 24 | 68 contacts → | ||||
Exact match “The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 25 | 66 contacts → | ||||
Exact match “Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “geothermal energy startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 783 geothermal energy startups worldwide
See the full list, filter by size, metro and specialty, and access 6,987 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Geothermal energy startups worldwide at a glance
As of Oct 13, 2026Companies by employee count
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 geothermal energy startups are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “geothermal energy startups” 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 6,987 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 October 13, 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.
Geothermal energy startups by location
7 lists · largest firstEvery Geothermal energy startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy startups based in the United States121
- Geothermal energy startups based in Germany51
- Geothermal energy startups based in the United Kingdom41
- Geothermal energy startups based in the Netherlands40
- Geothermal energy startups based in France39
- Geothermal energy startups based in Canada38
- Geothermal energy startups based in Switzerland29
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 energy startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many geothermal energy startups are there worldwide?
RevenueBase identified 783 company matches for geothermal energy startups worldwide as of October 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?
Enel Green Power tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most geothermal energy startups?
The United States leads with 121 companies, followed by Germany (51) and the United Kingdom (41). Every geothermal energy startups list by country and city is linked on this page.
Which city has the most geothermal energy startups?
Calgary leads with 14 company records, followed by Houston (14) and London (12).
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 6,987 professional contacts with verified work emails tracked across these 783 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 October 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 783 geothermal energy startups 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 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.
More company lists
Company intelligence · public preview
Top 25 geothermal energy startups worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 783 matching company records for geothermal energy startups worldwide, with 23,455 tracked contacts and 6,987 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: October 13, 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 startups 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 |  Enel Green Powerenelgreenpower.comHQ: Rome, ItalyReported employees: 5,001-10,000 | Rome, Italy | 5,001-10,000 | Exact match | 4,769 contacts → |
“We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Kengen Kenyakengen.co.ke HQ: Nairobi, KenyaReported employees: 1,001-5,000 | Nairobi, Kenya | 1,001-5,000 | Exact match | 2,112 contacts → |
“Kenya Electricity Generating Company PLC (KenGen) is the leading electric power generating company in East Africa.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Calpinecalpine.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,110 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Energy Development Corporationenergy.com.phHQ: Pasig City, PhilippinesReported employees: 1,001-5,000 | Pasig City, Philippines | 1,001-5,000 | Exact match | 1,856 contacts → |
“The Energy Development Corporation (EDC) is a pioneer in generating 100% clean, renewable, and reliable power as an electricity supplier in the Philippines for over 40 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,420 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Ormat Technologies, INCormat.comHQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,298 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | PT GEO Dipa Energi Perserogeodipa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 586 contacts → |
“PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Groupe Coriancegroupe-coriance.frHQ: Noisy-le-grand, FranceReported employees: 501-1,000 | Noisy-le-grand, France | 501-1,000 | Exact match | 485 contacts → |
“Pour une énergie propre et mieux utilisée Notre mission : fournir des solutions énergétiques performantes et économiques, tout en minimisant l'impact environnemental.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Supreme Energysupreme-energy.com HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 301 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 270 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | AP Renewables Inc. Aboitizpower Geothermal Unitaboitizpower.com HQ: United StatesReported employees: 201-500 | United States | 201-500 | Exact match | 152 contacts → |
“Aboitiz Power Corporation (AboitizPower, AP) is a leader in the Philippine Electric Power Industry with a portfolio of assets located across the country.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  IDM Energiesysteme Gmbhidm-energie.atHQ: Matrei, AustriaReported employees: 501-1,000 | Matrei, Austria | 501-1,000 | Exact match | 141 contacts → |
“WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Renova, INCrenovainc.comHQ: Chuo-ku, JapanReported employees: 201-500 | Chuo-ku, Japan | 201-500 | Exact match | 136 contacts → |
“RENOVA is an independent renewable energy developer and power producer.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Iceland Drilling Company LTDjardboranir.is HQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 132 contacts → |
“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 130 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 123 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | KS Orka Renewables Pte. LTDksorka.com HQ: South Jakarta, SingaporeReported employees: 201-500 | South Jakarta, Singapore | 201-500 | Exact match | 119 contacts → |
“KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Zanskarzanskar.com HQ: Salt Lake City, UT, United StatesReported employees: 51-200 | Salt Lake City, UT, United States | 51-200 | Exact match | 105 contacts → |
“Powering the future with the Earth’s hidden heat.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | PT PLN Energi GASplnenergigas.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 51-200 | Jakarta Selatan, Indonesia | 51-200 | Exact match | 88 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Eavor Technologies INCeavor.com HQ: Calgary, AB, CanadaReported employees: 51-200 | Calgary, AB, Canada | 51-200 | Exact match | 82 contacts → |
“Eavor™ is an Alberta-based tech company that has invented a new geothermal power generation technology that overcomes all the traditional roadblocks of geothermal.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  GA Drillinggadrilling.comHQ: Bratislava, SlovakiaReported employees: 51-200 | Bratislava, Slovakia | 51-200 | Exact match | 76 contacts → |
“We are Breaking Barriers in Geothermal At GADrilling, we are changing what is possible in deep drilling.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HS Orkahsorka.is HQ: Grindavík, IcelandReported employees: 51-200 | Grindavík, Iceland | 51-200 | Exact match | 75 contacts → |
“HS Orka is the largest privately owned power company in Iceland.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Celsius Energycelsiusenergy.com HQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 68 contacts → |
“The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 66 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 783 company matches
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Geothermal energy startups: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
781 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 783 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: October 13, 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 startups by location
7 lists · largest firstEvery Geothermal energy startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy startups based in the United States121
- Geothermal energy startups based in Germany51
- Geothermal energy startups based in the United Kingdom41
- Geothermal energy startups based in the Netherlands40
- Geothermal energy startups based in France39
- Geothermal energy startups based in Canada38
- Geothermal energy startups based in Switzerland29
Questions about this company list
What does Exact match mean for geothermal energy startups?
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 startups did RevenueBase find worldwide?
The saved snapshot records 783 matching company records, 23,455 tracked contacts and 6,987 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: October 13, 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.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 geothermal energy startups worldwide. Snapshot: October 13, 2026. https://revenuebase.ai/companies/browse/geothermal-energy-startups.
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 startups worldwide
RevenueBase records 783 matching company records for geothermal energy startups worldwide, with 23,455 tracked contacts and 6,987 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: October 13, 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 startups 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 | Enel Green Powerenelgreenpower.com HQ: Rome, ItalyReported employees: 5,001-10,000 | Rome, Italy | 5,001-10,000 | Exact match | 4,769 contacts → |
“We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Kengen Kenyakengen.co.ke HQ: Nairobi, KenyaReported employees: 1,001-5,000 | Nairobi, Kenya | 1,001-5,000 | Exact match | 2,112 contacts → |
“Kenya Electricity Generating Company PLC (KenGen) is the leading electric power generating company in East Africa.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Calpinecalpine.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,110 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Energy Development Corporationenergy.com.ph HQ: Pasig City, PhilippinesReported employees: 1,001-5,000 | Pasig City, Philippines | 1,001-5,000 | Exact match | 1,856 contacts → |
“The Energy Development Corporation (EDC) is a pioneer in generating 100% clean, renewable, and reliable power as an electricity supplier in the Philippines for over 40 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PT Pertamina Geothermal Energy TBKpge.pertamina.com HQ: Gambir, IndonesiaReported employees: 201-500 | Gambir, Indonesia | 201-500 | Exact match | 1,420 contacts → |
“Indonesia Geothermal Company” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ormat Technologies, INCormat.com HQ: Reno, NV, United StatesReported employees: 1,001-5,000 | Reno, NV, United States | 1,001-5,000 | Exact match | 1,298 contacts → |
“With over five decades of experience, Ormat Technologies, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | PT GEO Dipa Energi Perserogeodipa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 586 contacts → |
“PT Geo Dipa Energi (Persero) is a State-Owned Company specializing in Geothermal Energy” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Groupe Coriancegroupe-coriance.fr HQ: Noisy-le-grand, FranceReported employees: 501-1,000 | Noisy-le-grand, France | 501-1,000 | Exact match | 485 contacts → |
“Pour une énergie propre et mieux utilisée Notre mission : fournir des solutions énergétiques performantes et économiques, tout en minimisant l'impact environnemental.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Supreme Energysupreme-energy.com HQ: Jakarta Selatan, IndonesiaReported employees: 201-500 | Jakarta Selatan, Indonesia | 201-500 | Exact match | 301 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Fervo Energyfervoenergy.com HQ: Houston, CA, United StatesReported employees: 51-200 | Houston, CA, United States | 51-200 | Exact match | 270 contacts → |
“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | AP Renewables Inc. Aboitizpower Geothermal Unitaboitizpower.com HQ: United StatesReported employees: 201-500 | United States | 201-500 | Exact match | 152 contacts → |
“Aboitiz Power Corporation (AboitizPower, AP) is a leader in the Philippine Electric Power Industry with a portfolio of assets located across the country.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | IDM Energiesysteme Gmbhidm-energie.at HQ: Matrei, AustriaReported employees: 501-1,000 | Matrei, Austria | 501-1,000 | Exact match | 141 contacts → |
“WIR SORGEN FÜR IHR WOHLBEFINDEN.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Renova, INCrenovainc.com HQ: Chuo-ku, JapanReported employees: 201-500 | Chuo-ku, Japan | 201-500 | Exact match | 136 contacts → |
“RENOVA is an independent renewable energy developer and power producer.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Iceland Drilling Company LTDjardboranir.is HQ: IcelandReported employees: 51-200 | Iceland | 51-200 | Exact match | 132 contacts → |
“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Dandelion Energydandelionenergy.com HQ: Mount Kisco, NY, United StatesReported employees: 51-200 | Mount Kisco, NY, United States | 51-200 | Exact match | 130 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Doğan Jeotermal Groupdoganjeotermal.com.tr HQ: Ankara, TürkiyeReported employees: 1,001-5,000 | Ankara, Türkiye | 1,001-5,000 | Exact match | 123 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | KS Orka Renewables Pte. LTDksorka.com HQ: South Jakarta, SingaporeReported employees: 201-500 | South Jakarta, Singapore | 201-500 | Exact match | 119 contacts → |
“KS Orka Renewables is one of the most ambitious geothermal developers in the world.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Zanskarzanskar.com HQ: Salt Lake City, UT, United StatesReported employees: 51-200 | Salt Lake City, UT, United States | 51-200 | Exact match | 105 contacts → |
“Powering the future with the Earth’s hidden heat.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | PT PLN Energi GASplnenergigas.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 51-200 | Jakarta Selatan, Indonesia | 51-200 | Exact match | 88 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 · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Eavor Technologies INCeavor.com HQ: Calgary, AB, CanadaReported employees: 51-200 | Calgary, AB, Canada | 51-200 | Exact match | 82 contacts → |
“Eavor™ is an Alberta-based tech company that has invented a new geothermal power generation technology that overcomes all the traditional roadblocks of geothermal.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | GA Drillinggadrilling.com HQ: Bratislava, SlovakiaReported employees: 51-200 | Bratislava, Slovakia | 51-200 | Exact match | 76 contacts → |
“We are Breaking Barriers in Geothermal At GADrilling, we are changing what is possible in deep drilling.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HS Orkahsorka.is HQ: Grindavík, IcelandReported employees: 51-200 | Grindavík, Iceland | 51-200 | Exact match | 75 contacts → |
“HS Orka is the largest privately owned power company in Iceland.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Celsius Energycelsiusenergy.com HQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 68 contacts → |
“The Earth can accumulate summer heat and reuse it in the winter, so energy can be stored from season to season.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Quaise Energyquaise.com HQ: Houston, MA, United StatesReported employees: 51-200 | Houston, MA, United States | 51-200 | Exact match | 66 contacts → |
“Quaise develops superhot geothermal power plants for a terawatt-scale world.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Geothermal energy startups: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
781 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 783 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: October 13, 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 startups by location
7 lists · largest firstEvery Geothermal energy startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Geothermal energy startups based in the United States121
- Geothermal energy startups based in Germany51
- Geothermal energy startups based in the United Kingdom41
- Geothermal energy startups based in the Netherlands40
- Geothermal energy startups based in France39
- Geothermal energy startups based in Canada38
- Geothermal energy startups based in Switzerland29
Questions about this company list
What does Exact match mean for geothermal energy startups?
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 startups did RevenueBase find worldwide?
The saved snapshot records 783 matching company records, 23,455 tracked contacts and 6,987 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: October 13, 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 startups worldwide. Snapshot: October 13, 2026. https://revenuebase.ai/companies/browse/geothermal-energy-startups.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗