Company lists · Data refreshed October 2026

Top 25 Geothermal energy engineering services based in Türkiye

Name: Geothermal energy engineering services based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 13, 2026 282 companies tracked

RevenueBase identified 282 company matches for geothermal energy engineering services associated with Türkiye as of October 2026 and tracks 2,060 professional contacts across them, including 260 with verified work emails. Ankara is the largest hub.

This list covers company matches for geothermal energy engineering services associated with Türkiye, 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.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 13, 2026 How this list was built

282Companies

2,060Contacts tracked

260Verified emails

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The 25 largest geothermal energy engineering services based in Türkiye

Ranked by team size

Top 25 of 282 company matches for geothermal energy engineering services based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	İltekno	Exact match	Istanbul, TürkiyeHQ recorded Oct 13, 2026	201-500	157 contacts →
	Exact match “İltekno, as one of the five subsidiaries of Enso Holding, prioritizes customer satisfaction while providing engineering, design, procurement, installation, commissioning, and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2	Egesim Group	Exact match	Gebze, TürkiyeHQ recorded Oct 13, 2026	201-500	156 contacts →
	Exact match “EGESIM, founded in 1994, is an energy solutions company focused on industrial electrical and automation systems and EPC (engineering, procurement and construction) of geothermal…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3	Doğan Jeotermal Group	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	1,001-5,000	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
4	Yildirim Energy	Exact match	İstanbul, TürkiyeHQ recorded Oct 13, 2026	51-200	89 contacts →
	Exact match “YILDIRIM Group first entered the energy industry in 2010.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5	Efex Elc. Engineering CO	Exact match	Istanbul, TürkiyeHQ recorded Oct 13, 2026	51-200	41 contacts →
	Exact match “Efex Engineering provides turn-key solutions to his customers with experienced technical staff, who are certified as “Expert“ in energy sector.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6	Quad Plus Otomasyon	Exact match	Bursa, TürkiyeHQ recorded Oct 13, 2026	51-200	40 contacts →
	Exact match “Our Services Professional Engineering Industrial Safety Repair and Field Service Commissioning System Integration Power Services” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7	Pratikus Electric Consultancy Energy Project Engineering, Trading Co. LTD	Exact match	Yenimahalle, TürkiyeHQ recorded Oct 13, 2026	11-50	40 contacts →
	Exact match “PratikUs is providing the most appropriate and sustainable pure engineering solutions for the needs of customers since 2008.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8	Elkom Elektrik	Exact match	Bayrakli, TürkiyeHQ recorded Oct 13, 2026	51-200	39 contacts →
	Exact match “Elkom Elektrik olarak 33 yıl önce çıktığımız bu yolculukta anahtar teslim kurulum hizmetleri ile yüzlerce tesisi devreye almakla kalmamış aynı zamanda tesislerin sürekliliği için…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9	Geodestek Ltd. ŞTI	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	11-50	34 contacts →
	Exact match “GeoDestek Zemar Ltd.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10	GMK Energy	Exact match	Bayraklı, TürkiyeHQ recorded Oct 13, 2026	11-50	28 contacts →
	Exact match “GMK Energy is a world leader consulting, engineering and project development company which gives engineering, project design, consultancy, owner's engineering and integrated…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11	Altensis	Exact match	Atasehir, TürkiyeHQ recorded Oct 13, 2026	11-50	20 contacts →
	Exact match “As we face with the uprising and unwanted effects of the global warming, minimizing our carbon dioxide emissions is becoming more and more important each day.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12	PAL Mühendislik LTD ŞTI	Exact match	Bornova, TürkiyeHQ recorded Oct 13, 2026	11-50	17 contacts →
	Exact match “Since 2008, we have been with you with our PAL engineering group companies in the fields of energy efficiency increase projects, efficiency-increasing engineering projects in…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13	Kozanlar Grup	Exact match	Afyon, TürkiyeHQ recorded Oct 13, 2026	51-200	17 contacts →
	Exact match “KOZANLAR GRUP is a company based out of Turkey.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14	Enprode Engineering & Construction	Exact match	İstanbul, TürkiyeHQ recorded Oct 13, 2026	51-200	11 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15	Darma Enerji̇	Exact match	Bursa, TürkiyeHQ recorded Oct 13, 2026	11-50	11 contacts →
	Exact match “HAKKIMIZDA 2018 yılında "En güncel ekipmanlar ve uzman kadro ile denetimsiz, güvensiz ve pahalı, mühendislik ve danışmanlık hizmetlerini güvenilir ve erişilebilir seviyeye…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16	HD Energy Solutions	Exact match	İzmir, TürkiyeHQ recorded Oct 13, 2026	11-50	11 contacts →
	Exact match “Yenilenebilir Enerji ve Madenciliğe Dair Profesyonel Çözümler” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17	TPC Technology	Exact match	Istanbul, TürkiyeHQ recorded Oct 13, 2026	51-200	10 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18	Artengist	Exact match	Esentepe, TürkiyeHQ recorded Oct 13, 2026	11-50	9 contacts →
	Exact match “FOLLOW US!” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
19	Üçgem Mekanik A.Ş	Exact match	Bursa, TürkiyeHQ recorded Oct 13, 2026	1-10	9 contacts →
	Exact match “Isitma • soğutma • havalandirma • mekani̇k • tesi̇sat • yangindan korunma • doğal gaz si̇stemleri̇ • projelendi̇rme • i̇malat” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
20	PVI Enerji A.Ş	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
21	Hidrowell	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	1-10	6 contacts →
	Exact match “Hidrowell Mühendislik Müşavirlik Ltd.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
22	Alternatif Power	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	11-50	6 contacts →
	Exact match “ALTERNATİF POWER® has been established in 1994 and has been working on the fields of energy, petrol, and geothermal power.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
23	Ibisus Engineering	Exact match	Ataşehir, TürkiyeHQ recorded Oct 13, 2026	51-200	5 contacts →
	Exact match “Founded in 2016, İBİSUS ENGINEERING supports a young and highly dynamic corporate structure capable of combining its specialization in generators and cogenerators as well as years…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
24	Staf Mühendislik VE Enerji	Exact match	Corlu, TürkiyeHQ recorded Oct 13, 2026	11-50	5 contacts →
	Exact match “Dünyanın önde gelen markalarıyla partnerlik yapan firmamız, Şubat 2021’de iki makine mühendisi tarafından kuruldu.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
25	Cubicgeo Hidrojeoloji Jeoloji Maden Danışmanlığı	Exact match	Ankara, TürkiyeHQ recorded Oct 13, 2026	1-10	4 contacts →
	Exact match “CubicGEO Firması kurucuları Mert CÜYLAN ve M.Melih TAŞKIN Hacettepe Üniversitesi Hidrojeoloji Bölümünden mezun olduktan sonra 2006 yılından itibaren sektördeki lider kuruluşlarda…” 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 engineering services”. 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 282 geothermal energy engineering services based in Türkiye

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Geothermal energy engineering services based in Türkiye at a glance

As of Oct 13, 2026

12.6%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

14.2%Largest-city concentration · Ankara

Oct 13, 2026Page data refreshed

Companies by employee count

1-10

163

11-50

51-200

201-500

501-1,000

1,001-5,000

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 282 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Türkiye whose business descriptions match “geothermal energy engineering services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 260 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.

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 engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal energy engineering services are there based in Türkiye?

RevenueBase identified 282 company matches for geothermal energy engineering services associated with Türkiye 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?

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

Which city has the most geothermal energy engineering services?

Ankara leads with 40 company records, followed by Istanbul (24) and Cankaya (17).

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 260 professional contacts with verified work emails tracked across these 282 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.

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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.