Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in Türkiye

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 594 companies tracked

RevenueBase identified 594 geothermal consultants headquartered in Türkiye as of September 2026 and tracks 4,259 professional contacts across them, including 480 with verified work emails. Ankara is the largest hub.

This list covers geothermal consultants 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

594Companies

4,259Contacts tracked

480Verified emails

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The 25 largest geothermal consultants based in Türkiye

Ranked by team size

Top 25 of 594 geothermal consultants based in Türkiye, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Bordrill Drilling Contractor And Trade Corp	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	201-500	215 contacts →
	Indirect evidence “BORDRILL Drilling Contractor & Trade Co.” Source: RevenueBase Database · checked Sep 19, 2026
2	Egesim Group	Partial evidence	Gebze, TürkiyeHQ checked Sep 19, 2026	201-500	149 contacts →
	Partial 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 19, 2026
3	Doğan Jeotermal Group	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	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 19, 2026
4	Promer Consultancy Engineering INC	Partial evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	51-200	102 contacts →
	Partial evidence “PROMER Müşavirlik Mühendislik A.Ş.® is an independent engineering-consultancy company offering various professional solutions and services for industries such as mining, power…” Source: RevenueBase Database · checked Sep 19, 2026
5	Yildirim Energy	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “YILDIRIM Group first entered the energy industry in 2010.” Source: RevenueBase Database · checked Sep 19, 2026
6	Istrich	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	51-200	92 contacts →
	Indirect evidence “Enerji sektöründe ortaklarımızın özel sektörde yılların başından beri gerçekleştirdiği başarılı projeler ve edindiği tecrübelerden sonra, Istrich 2014 yılında müşterilerine enerji…” Source: RevenueBase Database · checked Sep 19, 2026
7	BE	Partial evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	51-200	64 contacts →
	Partial evidence “be is dedicated to providing sustainable engineering solutions and consultancy services in the fields of Renewables, Oil & Gas.” Source: RevenueBase Database · checked Sep 19, 2026
8	Escom Power Plants Engineering Services	Indirect evidence	Niğde, TürkiyeHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “ESCOM provides service in the field of especially erection, supervision, installation, commissioning, operation and maintenance of power plants with MAN Diesel/HFO Engines and GE…” Source: RevenueBase Database · checked Sep 19, 2026
9	Zemin Etüd VE Tasarım A.Ş	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	51-200	52 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
10	Quad Plus Otomasyon	Indirect evidence	Bursa, TürkiyeHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Our Services Professional Engineering Industrial Safety Repair and Field Service Commissioning System Integration Power Services” Source: RevenueBase Database · checked Sep 19, 2026
11	Efex Elc. Engineering CO	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Efex Engineering provides turn-key solutions to his customers with experienced technical staff, who are certified as “Expert“ in energy sector.” Source: RevenueBase Database · checked Sep 19, 2026
12	Mitto Consultancy	Indirect evidence	Ümit, TürkiyeHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “Türkiye'de madencilik yatırımları konusunda 19 yılı aşkın deneyime sahiptir.” Source: RevenueBase Database · checked Sep 19, 2026
13	Perform Mühendi̇sli̇k	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “HİZMET ALANLARIMIZ YÜKSEK YAPILAR ENDÜSTRİ VE ENERJİ TESİSLERİ TOPLU KONUTLAR HASTANELER TURİSTİK TESİSLER ve AVM'ler DEPREM GÜVENLİK ANALİZLERİ KENTSEL DÖNÜŞÜM PROJELERİ DİĞER…” Source: RevenueBase Database · checked Sep 19, 2026
14	Elkom Elektrik	Indirect evidence	Bayrakli, TürkiyeHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “Elkom Elektrik olarak 33 yıl önce çıktığımız bu yolculukta anahtar teslim kurulum hizmetleri ile yüzlerce tesisi devreye almakla kalmamış aynı zamanda tesislerin sürekliliği için…” Source: RevenueBase Database · checked Sep 19, 2026
15	Pratikus Electric Consultancy Energy Project Engineering, Trading Co. LTD	Indirect evidence	Yenimahalle, TürkiyeHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “PratikUs is providing the most appropriate and sustainable pure engineering solutions for the needs of customers since 2008.” Source: RevenueBase Database · checked Sep 19, 2026
16	Geodestek Ltd. ŞTI	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “GeoDestek Zemar Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
17	Ozifin Mining LTD	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Ozifin is an independent, international engineering and consulting company based in Turkey, providing comprehensive solutions to the mining industry and related sectors since 2016.” Source: RevenueBase Database · checked Sep 19, 2026
18	Mittel Tozoğlu Ltd. ŞTI	Indirect evidence	Alavardı, TürkiyeHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “2005 Yılında Mühendislik Hizmetleri vermek üzere kurulan şirketimiz bugün 40 mühendisten oluşan güçlü teknik yapısı, 18 yıllık ulusal iş tecrübesi ve binlerle mutlu referansı ile…” Source: RevenueBase Database · checked Sep 19, 2026
19	GMK Energy	Partial evidence	Bayraklı, TürkiyeHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial 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 19, 2026
20	Ulus Mühendi̇sli̇k	Indirect evidence	Maltepe, TürkiyeHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “Ulus Mühendislik Olarak, ÇEVRE DANIŞMANLIĞI' nda Uzman Mühendis Kadrolarımızla Hizmet Sunmaktayız.” Source: RevenueBase Database · checked Sep 19, 2026
21	AYA Drilling Services	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	1-10	25 contacts →
	Indirect evidence “Oilfield Services Company” Source: RevenueBase Database · checked Sep 19, 2026
22	Eçed Çevre Danışmanlık VE Mühendislik Hizmetleri	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “2001 yılında kurucumuz Harun TEKAY Çevre Danışmanlık hizmetlerinde aktif çalışma hayatına başlamıştır.” Source: RevenueBase Database · checked Sep 19, 2026
23	Enerson Geophysical Explorations CO	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 19, 2026	51-200	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 19, 2026
24	Altensis	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
25	Lion Solar Solutions	Indirect evidence	Konak, TürkiyeHQ checked Sep 19, 2026	1-10	17 contacts →
	Indirect evidence “We provide precision engineering and consulting services for solar professionals delivering the “E” in EPC.” Source: RevenueBase Database · checked Sep 19, 2026

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 consultants. 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 consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. 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 594 geothermal consultants based in Türkiye

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Geothermal consultants based in Türkiye at a glance

As of Sep 19, 2026

11.3%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

18.7%Largest-city concentration · Ankara

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

352

11-50

172

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 594 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 consultants, 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 consultants”. 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 consultants), 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 consultants, 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, 480 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 19, 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 consultants by metro

Geothermal consultants in Ankara111
Geothermal consultants in Istanbul68
Geothermal consultants in Cankaya64

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 consultants, 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 consultants are there based in Türkiye?

RevenueBase identified 594 geothermal consultants 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?

Bordrill Drilling Contractor And Trade Corp, headquartered in Ankara, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Ankara leads with 111 headquartered companies, followed by Istanbul (68) and Cankaya (64).

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 480 verified decision-maker contacts tracked across these 594 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 19, 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.