Company lists · Data refreshed September 2026
Top 25 Geothermal companies based in Türkiye
RevenueBase identified 187 geothermal companies headquartered in Türkiye as of September 2026 and tracks 4,382 professional contacts across them, including 738 with verified work emails. Ankara is the largest hub.
This list covers geothermal companies headquartered in Türkiye, 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 15, 2026.
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 companies based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 365 contacts → | ||||
Indirect evidence “Vaillant Group, ısıtma ve havalandırma teknolojisi alanlarında uluslararası pazarlarda lider bir kuruluştur.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 333 contacts → | ||||
Indirect evidence “1997 yılında başladığı enerji yatırımları ile grup şirketlerinin ihtiyacı olan enerjiyi üreterek enerji sektörüne ilk adımlarını atan Sanko Holding sahip olduğu yenilenebilir…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 215 contacts → | ||||
Indirect evidence “BORDRILL Drilling Contractor & Trade Co.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 172 contacts → | ||||
Indirect evidence “Founded in with sustainability at its core, Polat Enerji is one of Türkiye’s leading energy companies.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 166 contacts → | ||||
Indirect evidence “2010 yılında enerji üretimi yolculuğuna başlayan, 7 şehirde faaliyet gösteren 8 lisanslı üretim tesisiyle toplam 208,30 MWe kurulu güce sahip olan, portföyünün 158,30 MWe’si…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 149 contacts → | ||||
Strong evidence “EGESIM, founded in 1994, is an energy solutions company focused on industrial electrical and automation systems and EPC (engineering, procurement and construction) of geothermal…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 124 contacts → | ||||
Indirect 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 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 109 contacts → | ||||
Indirect evidence “IC İçtaş Enerji Yatırım Holding, 1998 yılında Türkiye enerji sektöründeki öncü şirketlerden biri olarak başlayan yolculuğunu, bugün itibarıyla sektördeki lider şirketlerden biri…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 93 contacts → | ||||
Indirect evidence “YILDIRIM Group first entered the energy industry in 2010.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 75 contacts → | ||||
Indirect evidence “Naturel Enerji; Borsa İstanbul’daki, yatırımlarının tamamı güneş santrali olan ilk ve tek güneş enerjisi şirketidir.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 54 contacts → | ||||
Indirect evidence “As Ağaoğlu Energy Group, we are utilizing Turkey’s natural energy sources in a most efficient and ideal way.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 49 contacts → | ||||
Indirect evidence “RT Enerji, one of the leading investors in the energy market; It develops, establishes and operates electricity generation plant projects from 100% renewable energy sources and…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 28 contacts → | ||||
Indirect evidence “GMK Energy is a world leader consulting, engineering and project development company which gives engineering, project design, consultancy, owner's engineering and integrated…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 25 contacts → | ||||
Indirect evidence “Oilfield Services Company” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 21 contacts → | ||||
Indirect evidence “Yenilenebilir Enerji Kaynakları” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 contacts → | ||||
Indirect evidence “Enerson Geophysical Exploration Company provides full service in various aspects of geophysical exploration with the implementation of innovative technologie.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 14 contacts → | ||||
Indirect evidence “KOZANLAR GRUP is a company based out of Turkey.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 12 contacts → | ||||
Indirect evidence “Vegevital Greenhouses grows top quality pesticide free tomatoes on the vine since 2005 under the bright aegean sky with the help of geo-thermal heating.Very well known brand in…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 11 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Indirect evidence “We supply clients with geophysical services to help them achieve greater success in finding, developing, managing hydrocarbon reservoirs and mineral deposits.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Indirect evidence “Akça Enerji Grubu, 1998 yılında Akça Enerji Üretim Otoprodüktör Grubu A.Ş.'nin kurulmasıyla, elektrik üretim ve ticareti faaliyetlerine başlamıştır.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence “Innovative, Clean & Feasible Energy Solutions for the People Enprode is a global firm and our philosophy is to bring global reach and local capabilities and experience to bear in…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “Güneş Enerjisi Sistemleri” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “Bilenerji, gaz türbinleri ve gaz motorları ile enerji üretimi, kızgın su üretimi, GES proje kurulum danışmanlık ve işletmeciliği yapmaktadır.” Source: RevenueBase Database · checked Sep 15, 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 companies. 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 companies.
- Partial evidence
- Its own public description names part of geothermal companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name geothermal companies. 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 187 geothermal companies based in Türkiye
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Geothermal companies based in Türkiye at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 187 companies.
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 companies, 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.
- What qualifies
- Companies headquartered in Türkiye whose own description of what they do matches “geothermal companies”. 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 companies), 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 companies, and records with no verified work email. Companies headquartered outside Türkiye are excluded even when they keep an office there.
- 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, 738 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 15, 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 companies by metro
- Geothermal companies in Ankara30
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 companies, 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 companies are there based in Türkiye?
RevenueBase identified 187 geothermal companies headquartered in Türkiye 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?
Vaillant Group Türkiye, headquartered in Istanbul, tops this list with the largest team on record.
Which city has the most geothermal companies?
Ankara leads with 30 headquartered companies, followed by Istanbul (23) and Cankaya (20).
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 738 verified decision-maker contacts tracked across these 187 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 15, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase 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.