Company lists · Data refreshed September 2026

Top 25 Geothermal energy consultants based in Türkiye

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 152 companies tracked

RevenueBase identified 152 geothermal energy consultants headquartered in Türkiye as of September 2026 and tracks 1,251 professional contacts across them, including 157 with verified work emails. Ankara is the largest hub.

This list covers geothermal energy 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 16, 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 16, 2026 86% judged on-target in blind review

152Companies

1,251Contacts tracked

157Verified emails

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The 25 largest geothermal energy consultants based in Türkiye

Ranked by team size

Top 25 of 152 geothermal energy consultants based in Türkiye, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal energy 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	Egesim Group	Strong evidence	Gebze, TürkiyeHQ checked Sep 16, 2026	201-500	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 16, 2026
2	Doğan Jeotermal Group	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	1,001-5,000	124 contacts →
	Partial evidence “Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…” Source: RevenueBase Database · checked Sep 16, 2026
3	Pratikus Electric Consultancy Energy Project Engineering, Trading Co. LTD	Indirect evidence	Yenimahalle, TürkiyeHQ checked Sep 16, 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 16, 2026
4	Ozifin Mining LTD	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 16, 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 16, 2026
5	GMK Energy	Strong evidence	Bayraklı, TürkiyeHQ checked Sep 16, 2026	11-50	28 contacts →
	Strong 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 16, 2026
6	Altensis	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 16, 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 16, 2026
7	Ençev Enerji̇	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	51-200	15 contacts →
	Partial evidence “EN-ÇEV Enerji Çevre Yatırımları ve Danışmanlığı Haritacılık İmar İnşaat A.Ş.” Source: RevenueBase Database · checked Sep 16, 2026
8	Onur Enerji	Strong evidence	Izmir, TürkiyeHQ checked Sep 16, 2026	11-50	13 contacts →
	Strong evidence “Onur Enerji is a technical consultancy company, specializing in energy efficiency and renewable energy technologies to make the world greener.” Source: RevenueBase Database · checked Sep 16, 2026
9	Fides Mühendislik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Bünyesinde jeoloji, maden ve çevre mühendisliğinin yanı sıra çeşitli disiplinlerden oluşan tecrübeli uzman kadrosu ile her geçen gün büyümeye devam eden FİDES MÜHENDİSLİK…” Source: RevenueBase Database · checked Sep 16, 2026
10	TPC Technology	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	51-200	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
11	INR Consulting & Engineering INC	Indirect evidence	Cankaya, TürkiyeHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “INR provides worldwide consulting and engineering services especially in mining projects mainly associated with geological, geotechnical, and hydraulic engineering disciplines.” Source: RevenueBase Database · checked Sep 16, 2026
12	PVI Enerji A.Ş	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	11-50	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
13	Efektif Endüstriyel Enerji A.Ş	Partial evidence	Melikgazi, TürkiyeHQ checked Sep 16, 2026	51-200	7 contacts →
	Partial evidence “Şirketimiz 2008 yılında enerji verimliliği, enerji kullanım ve üretim danışmanlık hizmetleri, ve enerji santralleri kurulumu konularında hizmet vermek üzere Kayseri Erciyes…” Source: RevenueBase Database · checked Sep 16, 2026
14	Ibisus Engineering	Indirect evidence	Ataşehir, TürkiyeHQ checked Sep 16, 2026	51-200	6 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
15	Artengist	Indirect evidence	Esentepe, TürkiyeHQ checked Sep 16, 2026	11-50	5 contacts →
	Indirect evidence “FOLLOW US!” Source: RevenueBase Database · checked Sep 16, 2026
16	Cubicgeo Hidrojeoloji Jeoloji Maden Danışmanlığı	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “CubicGEO Firması kurucuları Mert CÜYLAN ve M.Melih TAŞKIN Hacettepe Üniversitesi Hidrojeoloji Bölümünden mezun olduktan sonra 2006 yılından itibaren sektördeki lider kuruluşlarda…” Source: RevenueBase Database · checked Sep 16, 2026
17	Teori Earth Sciences	Partial evidence	Etimesgut, TürkiyeHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “Teori Earth Sciences is an engineering and consultancy firm that aims to offer geological, hydrogeological, and environmental solutions at national and international standards…” Source: RevenueBase Database · checked Sep 16, 2026
18	BS Dağıtık Enerji Sistemleri Anonim Şirketi	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “BS Dağıtık Enerji Sistemleri \| Yenilenebilir Enerjide 25+ Yıl Uzmanlık Sürdürülebilir ve güvenli bir enerji geleceği için dağıtık enerji sistemleri artık bir tercih değil…” Source: RevenueBase Database · checked Sep 16, 2026
19	Enigma Engineering Solutions	Strong evidence	Aydın, TürkiyeHQ checked Sep 16, 2026	1-10	3 contacts →
	Strong evidence “Enigma Engineering Solutions is an independent consultancy company which was found in 2023 in Turkey for the oil, gas & geothermal exploration & production industry.” Source: RevenueBase Database · checked Sep 16, 2026
20	Blue Energy Mühendislik	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	11-50	3 contacts →
	Partial evidence “Kurulu gücü MW'ı aşan yenilenebilir enerji santrali kurulum, imalat, montaj, devreye alma ve işletme tecrübelerimiz ile hidroelektrik, güneş ve rüzgar enerjisi yatırımlarınız ve…” Source: RevenueBase Database · checked Sep 16, 2026
21	GSE Enerji	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	1-10	2 contacts →
	Partial evidence “Geothermal & Mining Survey -MT & (Magnetotelluric) Data acuasition & processing & interpretation -Gravity Data acuasition & processing & interpretation -Magnetic Data acuasition &…” Source: RevenueBase Database · checked Sep 16, 2026
22	Enovals Enerji Danışmanlık VE Mühendislik Hizmetleri	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
23	Energyworks Mühendislik Danışmanlık	Partial evidence	Atasehir, TürkiyeHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “EnergyWorks is a privately-owned Engineering, Consulting and Construction company in the field of renewable energy.” Source: RevenueBase Database · checked Sep 16, 2026
24	Proenco Enerji̇ Mühendi̇sli̇k Müşavi̇rli̇k Ltd. Şti̇	Partial evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “Pro-En-Co yurt içi ve yurt dışında yürütülen enerji projelerinin (HES-RES-GES) planlama, proje, inşaat, işletme ve devir aşamalarında mühendislik ve müşavirlik hizmetleri…” Source: RevenueBase Database · checked Sep 16, 2026
25	Regista Enerji	Partial evidence	Adana, TürkiyeHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “GES Yatırımınız Regista Enerji ile güvende!” Source: RevenueBase Database · checked Sep 16, 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 energy 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 energy consultants.
Partial evidence: Its own public description names part of geothermal energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal energy 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 152 geothermal energy consultants based in Türkiye

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Geothermal energy consultants based in Türkiye at a glance

As of Sep 16, 2026

12.5%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

21.7%Largest-city concentration · Ankara

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

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 152 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 energy 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 energy 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 energy 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 energy 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, 157 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Geothermal energy consultants by metro

Geothermal energy consultants in Ankara33

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal energy 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 energy consultants are there based in Türkiye?

RevenueBase identified 152 geothermal energy 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?

Egesim Group, headquartered in Kocaeli, tops this list with the largest team on record.

Which city has the most geothermal energy consultants?

Ankara leads with 33 headquartered companies, followed by Cankaya (15) and Istanbul (10).

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 157 verified decision-maker contacts tracked across these 152 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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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.