Company lists · Data refreshed September 2026

Top 25 Building decarbonization companies based in Türkiye

Name: Building decarbonization companies based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 244 companies tracked

RevenueBase identified 244 building decarbonization companies headquartered in Türkiye as of September 2026 and tracks 2,262 professional contacts across them, including 425 with verified work emails. Istanbul is the largest hub.

This list covers building decarbonization 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 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

244Companies

2,262Contacts tracked

425Verified emails

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The 25 largest building decarbonization companies based in Türkiye

Ranked by team size

Top 25 of 244 building decarbonization companies 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 building decarbonization companies: 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	Mapa Group	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	10001+	959 contacts →
	Indirect evidence “Mapa Group has emerged as a global leader in the engineering and construction industry, now spanning three continents.” Source: RevenueBase Database · checked Sep 16, 2026
2	Entegre Project Management	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 16, 2026	51-200	166 contacts →
	Indirect evidence “ENTEGRE PROJECT MANAGEMENT is one of the leading Development Consultancy and Project Management Companies in Turkey and provides services to its clients with utmost care of…” Source: RevenueBase Database · checked Sep 16, 2026
3	BE	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	51-200	64 contacts →
	Indirect evidence “be is dedicated to providing sustainable engineering solutions and consultancy services in the fields of Renewables, Oil & Gas.” Source: RevenueBase Database · checked Sep 16, 2026
4	Kiklop Design, Engineering And Consultancy	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	201-500	46 contacts →
	Indirect evidence “KIKLOP provides architectural/MEP design, PMC and independent commissioning services.” Source: RevenueBase Database · checked Sep 16, 2026
5	VAT Enerji̇ Hi̇zmetleri̇	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 16, 2026	11-50	33 contacts →
	Indirect evidence “Küreselleşme sonucu dünyada artan ticaret hacmi ve üretim imkânlarının gelişmesi, modernleşen toplumlarla birlikte enerji ihtiyacının artmasına neden olmaktadır.” 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	Best Enerji Yönetimi	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 16, 2026	11-50	18 contacts →
	Indirect evidence “BEST Enerji Yönetimi; Sanayide ve Binalarda Enerji Verimliliğine odaklanmış tüm Türkiye'de faaliyetlerini yürüten enerji verimliliği şirketidir.” Source: RevenueBase Database · checked Sep 16, 2026
8	Oğuz Bayazıt Mimarlık	Indirect evidence	Atsşehir, TürkiyeHQ checked Sep 16, 2026	51-200	17 contacts →
	Indirect evidence “Oğuz Bayazıt Mimarlık, Y.” Source: RevenueBase Database · checked Sep 16, 2026
9	Ençev Enerji̇	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	51-200	15 contacts →
	Indirect evidence “EN-ÇEV Enerji Çevre Yatırımları ve Danışmanlığı Haritacılık İmar İnşaat A.Ş.” Source: RevenueBase Database · checked Sep 16, 2026
10	Onur Enerji	Indirect evidence	Izmir, TürkiyeHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect 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
11	MGS Proje Müşavirlik Mühendislik Ticaret Ltd. ŞTI	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “TR 2005 yılındaki kuruluşumuzdan itibaren, Müşterilerimize, Mühendislikte Gelişen Sürdürülebilirlik (MGS) ilkesi ile eksiksiz ve kaliteden ödün vermeyen çalışma anlayışımızla…” Source: RevenueBase Database · checked Sep 16, 2026
12	Demir Enerji	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Demir Energy Consulting is helping its customers to achieve their sustainability goals by providing solutions on climate change strategies, carbon management, effective and…” Source: RevenueBase Database · checked Sep 16, 2026
13	AFB	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Aslında Logo belki de herşeyi söylüyor.” Source: RevenueBase Database · checked Sep 16, 2026
14	PAL Mühendislik LTD ŞTI	Indirect evidence	Bornova, TürkiyeHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
15	Dansuk Engineering	Indirect evidence	Altunizade, TürkiyeHQ checked Sep 16, 2026	51-200	11 contacts →
	Indirect evidence “Dansuk Engineering - a solution partner to global corporations like Koç Holding, Arçelik, Beko, LG and Arctic - has been providing innovative HVAC and energy solutions for…” Source: RevenueBase Database · checked Sep 16, 2026
16	Resisco Mühendislik A.Ş	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “Resisco, ülkenin alanlarında öncü firmalarına Sera Gazı Emisyonları, Sürekli Emisyon Ölçüm Sistemleri (SEÖS) Mevzuat ve Uygulamaları ve genel olarak Çevre Mevzuatları hakkında…” Source: RevenueBase Database · checked Sep 16, 2026
17	Besenve	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “BESENVE, enerji verimliliği danışmanlığı alanında verimlilik artırıcı çözümlere dair enerji etüdü, mühendislik, projelendirme, uygulama, test ve işletmeye alma, performans ölçme…” Source: RevenueBase Database · checked Sep 16, 2026
18	Levay Enerji A.Ş	Indirect evidence	İzmi̇r, TürkiyeHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “Levay Enerji A.Ş, Elektrik ve Makine Mühendisliği alanında Proje,Uygulama ve Danışmanlık hizmetleri veren, geçmişten aldığı deneyimi, geleceğin teknolojisi için kullanmaya…” Source: RevenueBase Database · checked Sep 16, 2026
19	Atasayin Enerji̇ VE Mühendi̇sli̇k Anoni̇m Şi̇rketi̇	Indirect evidence	Pendi̇k, TürkiyeHQ checked Sep 16, 2026	1-10	10 contacts →
	Indirect evidence “Atasayın Enerji ve Mühendislik firması olarak iklim değişikliği ve enerji kaynaklarının verimli kullanılmasına önem veriyoruz.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ecomuse	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	1-10	8 contacts →
	Indirect evidence “EcoMuse Consulting is a boutique advisory firm based in Istanbul, specializing in the Green Transition.” Source: RevenueBase Database · checked Sep 16, 2026
21	Tardis Enerji	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	11-50	8 contacts →
	Indirect evidence “Tardis Enerji, güneş enerjisi sistemlerindeki bilgi, deneyim ve uzmanlığı sayesinde Türkiye çapında işletmeler, hizmet sağlayıcılar ve yatırımcılara mühendislik ve danışmanlık…” Source: RevenueBase Database · checked Sep 16, 2026
22	Greenix Sustainability	Partial evidence	Bahçelievler, TürkiyeHQ checked Sep 16, 2026	11-50	8 contacts →
	Partial evidence “Corporate & Product Sustainability \| Carbon Management \| Climate Tech Solutions \| Renewable Energy \| Waste Management \| Water Management \| Smart Buildings \| Energy Efficiency \|…” Source: RevenueBase Database · checked Sep 16, 2026
23	Efektif Endüstriyel Enerji A.Ş	Indirect evidence	Melikgazi, TürkiyeHQ checked Sep 16, 2026	51-200	7 contacts →
	Indirect 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
24	N22 Mühendislik Taahhüt Sanayi VE Ticaret A.Ş	Indirect evidence	Ümit, TürkiyeHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “N22 Engineering is a forward-thinking engineering and project management consultancy based in Ankara, Turkey.” Source: RevenueBase Database · checked Sep 16, 2026
25	Recton	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence “Recton provides creative solutions regarding maintenance, energy, and operational cost-saving with the help of its high technology, enhanced products, and services.” 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: building decarbonization 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 building decarbonization companies.
Partial evidence: Its own public description names part of building decarbonization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building decarbonization 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 244 building decarbonization companies based in Türkiye

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Building decarbonization companies based in Türkiye at a glance

As of Sep 16, 2026

18.8%Verified-email coverage

9.3Average contacts per company

1-10Median size (employees)

20.9%Largest-city concentration · Istanbul

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

146

11-50

51-200

201-500

10001+

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 244 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 building decarbonization 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 “building decarbonization 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 building decarbonization 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 building decarbonization 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, 425 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.

Building decarbonization companies by metro

Building decarbonization companies in Istanbul51
Building decarbonization companies in Ankara26

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 building decarbonization 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 building decarbonization companies are there based in Türkiye?

RevenueBase identified 244 building decarbonization 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?

Mapa Group, headquartered in Ankara, tops this list with the largest team on record.

Which city has the most building decarbonization companies?

Istanbul leads with 51 headquartered companies, followed by Ankara (26) and Cankaya (19).

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 425 verified decision-maker contacts tracked across these 244 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.