Company lists · Data refreshed September 2026

Top 25 Electrical testing and commissioning firms based in Türkiye

Name: Electrical testing and commissioning firms based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 355 companies tracked

RevenueBase identified 355 electrical testing and commissioning firms headquartered in Türkiye as of September 2026 and tracks 1,961 professional contacts across them, including 174 with verified work emails. Istanbul is the largest hub.

This list covers electrical testing and commissioning firms 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

355Companies

1,961Contacts tracked

174Verified emails

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The 25 largest electrical testing and commissioning firms based in Türkiye

Ranked by team size

Top 25 of 355 electrical testing and commissioning firms 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 electrical testing and commissioning firms: 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	Marke Elektronik	Partial evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	75 contacts →
	Partial evidence “Marke Elektronik is a representative company focused on electrical test equipments and industrial electronic components since 1993.” Source: RevenueBase Database · checked Sep 19, 2026
2	Omega Mühendislik	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Omega Mühendislik, 1994 yılında girişimci Öner Çelebi tarafından kurulan, elektrik taahhüt sektöründe, proje, uygulama ve teknik danışmanlık alanlarında hizmet veren, alçak…” Source: RevenueBase Database · checked Sep 19, 2026
3	Quad Plus Otomasyon	Partial evidence	Bursa, TürkiyeHQ checked Sep 19, 2026	51-200	41 contacts →
	Partial evidence “Our Services Professional Engineering Industrial Safety Repair and Field Service Commissioning System Integration Power Services” Source: RevenueBase Database · checked Sep 19, 2026
4	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
5	Tkey Global	Indirect evidence	Cayirova, TürkiyeHQ checked Sep 19, 2026	11-50	39 contacts →
	Indirect evidence “TKey Global olarak faaliyet gösterdiğimiz sektörlerde kalite ve memnuniyeti hedef alarak elektrik sistemlerinin kurulumu, devreye alınması, testleri ve bakım çalışmalarını…” Source: RevenueBase Database · checked Sep 19, 2026
6	Onmuş Elektrik Sanayi VE Ticaret A.Ş	Indirect evidence	İzmir, TürkiyeHQ checked Sep 19, 2026	51-200	35 contacts →
	Indirect evidence “1976 yılında İstanbul Devlet Mimarlık Akademisinin Elektrik bölümünden mezun olmuş olan Namık ONMUŞ çeşitli ortaklıklar yaparak serbest olarak çalışmaya başlamıştır.” Source: RevenueBase Database · checked Sep 19, 2026
7	Tesla Elektrik	Indirect evidence	Beylikdüzü, TürkiyeHQ checked Sep 19, 2026	201-500	27 contacts →
	Indirect evidence “Tesla Elektrik; Elektrik Proje Hizmetleri, Elektrik Taahhüt Hizmetleri, Trafo İşletme Sorumluluğu ve Bakım Hizmetleri, Akıllı Ev Sistemleri, Topraklama Ölçüm ve Raporlama…” Source: RevenueBase Database · checked Sep 19, 2026
8	Traser Electromechanical Services	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “TRASER Transformer Service Electromechanical Maintenance San.” Source: RevenueBase Database · checked Sep 19, 2026
9	Alternans	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Firmamız, elektrik enerjisi üretimi, iletimi ve dağıtımı; enerji tesisleri ile alçak gerilim, orta gerilim ve yüksek gerilim şalt tesisleri, endüstriyel tesisler, enerji üretim…” Source: RevenueBase Database · checked Sep 19, 2026
10	Dugan Technology Solutions	Indirect evidence	Sakarya, TürkiyeHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “DUGAN ENERGY is an accredited company according to the 17025 IEC quality system standards by Türkak.” Source: RevenueBase Database · checked Sep 19, 2026
11	Forsel Elektri̇k Enerji̇ A.Ş	Indirect evidence	Maltepe, TürkiyeHQ checked Sep 19, 2026	501-1,000	19 contacts →
	Indirect evidence “Elektrik Enerji Taahhüt” Source: RevenueBase Database · checked Sep 19, 2026
12	Koçak Elektri̇k Mühendi̇sli̇k	Indirect evidence	Aksaray, TürkiyeHQ checked Sep 19, 2026	51-200	17 contacts →
	Indirect evidence “1991 yılında açtığı proje çizim bürosu ile ticari faaliyetine başlayan Koçak Mühendislik; Çeyrek asrı aşkın tecrübesi ile elektrik sektöründe faaliyet göstermektedir yılında…” Source: RevenueBase Database · checked Sep 19, 2026
13	Birfen Elektrik&elektronik	Indirect evidence	Taşköprü, TürkiyeHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “AG ve Otomasyon Panelleri, Elektrik Enstrüman Montaj, Fiber Optik Test, Sonlandırma ve Raporlama tecrüberlerimiz ile 40 yıldır sizlere hizmet vermekten gurur duyuyoruz.” Source: RevenueBase Database · checked Sep 19, 2026
14	SAM Mekanik Enerji Taahhüt VE Ticaret A.Ş	Indirect evidence	Aliaga, TürkiyeHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Elektrik & Enstrüman Montaj ve Bakım Hizmetleri ile Devreye Alma, Malzeme Tedariği, Mühendislik, Kalibrasyon konularında Endüstriyel Tesislerde yetkin kadromuzla hizmet…” Source: RevenueBase Database · checked Sep 19, 2026
15	Elsan Elektrik A.Ş	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Firmamız 1974'ten bu yana elektrik tesisatı sektöründe mühendislik, proje uygulamaları, danışmanlık ve işletme servis hizmeti vermektedir.” Source: RevenueBase Database · checked Sep 19, 2026
16	Elektropanel Mühendislik	Partial evidence	Umraniye, TürkiyeHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “Elektropanel Engineering has expanded its activities, which started with the manufacturing and installation of electrical panels, with new services in the field of electricity and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Mert Marine	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “2006 yılında kurulan Mert Marine tecrübeli ve eğitimli personeli ile elektrik ve elektronik sistemlerinin imalatı, donatılması, tamir ve bakımı konularında müşterilerinize etkili…” Source: RevenueBase Database · checked Sep 19, 2026
18	AEM Akgün Elektrik Mühendislik San. VE Tic. Ltd. ŞTI	Indirect evidence	Aliağa, TürkiyeHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Güzel bir gelecek için çalışıyoruz!” Source: RevenueBase Database · checked Sep 19, 2026
19	Birsoy Mühendislik	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 19, 2026	51-200	10 contacts →
	Indirect evidence “Yüksek gerilim (y.g.), orta gerilim(o.g.), alçak gerilim(a.g.), enerji nakil hattı(e.n.h.), fabrika elektrik kuvvetli ve zayıf akım tesisat işleri,(kamera, güvenlik, yangın, data…” Source: RevenueBase Database · checked Sep 19, 2026
20	AYM Elektromekani̇k San. Ti̇c. Ltd. Şti̇	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 19, 2026	201-500	7 contacts →
	Indirect evidence “Elektrik Taahhüt •Müşavirlik ve Mühendislik •Zayıf Akım Sistemleri •Orta Gerilim Tesisleri •Alçak Gerilim Dağıtım Sistemleri •Test ve Devreye Alma” Source: RevenueBase Database · checked Sep 19, 2026
21	EN İS Mühendislik Taahhüt Ticaret Anonim Şirketi	Indirect evidence	Yalova, TürkiyeHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Alt yapi ve üst yapi elektri̇k proje ve müteahhi̇tli̇k hi̇zmetleri̇ (endüstri̇yel tesi̇sler, fabri̇kalar ve doğalgaz, bi̇ogaz, kömür, rüzgar ve güneş enerji̇si̇ne dayali elektri̇k…” Source: RevenueBase Database · checked Sep 19, 2026
22	İneltek Mühendislik Ltd. ŞTI	Indirect evidence	Seyhan, TürkiyeHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Elektrik Mühendislik Danışmanlık Taahhüt Şirketi” Source: RevenueBase Database · checked Sep 19, 2026
23	FOREL	Indirect evidence	Cevizli, TürkiyeHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “FOREL Elektrik Mühendislik San.” Source: RevenueBase Database · checked Sep 19, 2026
24	Adven Mühendislik	Indirect evidence	Eskişehir, TürkiyeHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “Enerji Sektöründe yetkin mühendislik hizmeti verme gayesinde olan firmamız kurulduğu günden bugüne sürekli değişen ve gelişen piyasayı yakından takip etmektedir.” Source: RevenueBase Database · checked Sep 19, 2026
25	GÜÇ Transformatör Mühendislik San. VE Tic. A.Ş	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “GÜÇ Check-Up Merkezi, güç transformatörleri, orta gerilim kesicileri ve enerji sistemlerinin test, bakım ve durum değerlendirme çalışmalarında uzmanlaşmış bir mühendislik…” 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: electrical testing and commissioning firms. 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 electrical testing and commissioning firms.
Partial evidence: Its own public description names part of electrical testing and commissioning firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical testing and commissioning firms. 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 355 electrical testing and commissioning firms based in Türkiye

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Electrical testing and commissioning firms based in Türkiye at a glance

As of Sep 19, 2026

8.9%Verified-email coverage

5.5Average contacts per company

1-10Median size (employees)

16.9%Largest-city concentration · Istanbul

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

185

11-50

124

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 355 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 electrical testing and commissioning firms, 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 “electrical testing and commissioning firms”. 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 electrical testing and commissioning firms), 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 electrical testing and commissioning firms, 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, 174 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.

Electrical testing and commissioning firms by metro

Electrical testing and commissioning firms in Istanbul60

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 electrical testing and commissioning firms, 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 electrical testing and commissioning firms are there based in Türkiye?

RevenueBase identified 355 electrical testing and commissioning firms 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?

Marke Elektronik, headquartered in Atasehir, tops this list with the largest team on record.

Which city has the most electrical testing and commissioning firms?

Istanbul leads with 60 headquartered companies, followed by Ankara (16) and Izmir (15).

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 174 verified decision-maker contacts tracked across these 355 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.