Company lists · Data refreshed September 2026

Top 25 Commercial building decarbonization firms based in Austria

Name: Commercial building decarbonization firms based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 51 companies tracked

RevenueBase identified 51 commercial building decarbonization firms headquartered in Austria as of September 2026 and tracks 289 professional contacts across them, including 112 with verified work emails. Wien is the largest hub.

This list covers commercial building decarbonization firms headquartered in Austria, 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

51Companies

289Contacts tracked

112Verified emails

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The 25 largest commercial building decarbonization firms based in Austria

Ranked by team size

Top 25 of 51 commercial building decarbonization firms based in Austria, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial building decarbonization 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	Techem Austria	Indirect evidence	Innsbruck, AustriaHQ checked Sep 16, 2026	201-500	53 contacts →
	Indirect evidence “Techem ist einer der führenden Servicepartner für grüne und smarte Gebäude.” Source: RevenueBase Database · checked Sep 16, 2026
2	Ista Österreich	Indirect evidence	Wien, AustriaHQ checked Sep 16, 2026	201-500	47 contacts →
	Indirect evidence “Wir geben Häusern eine Zukunft.” Source: RevenueBase Database · checked Sep 16, 2026
3	Beyond Carbon Energy	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect evidence “beyond carbon energy konzipiert, plant, realisiert, finanziert und betreibt weitestgehend emissionsfreie Wärme- und Kälteversorgung für Bestands- und Neubauimmobilien.” Source: RevenueBase Database · checked Sep 16, 2026
4	E7 Energy Innovation & Engineering	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Source: RevenueBase Database · checked Sep 16, 2026
5	Ifea Institut FÜR Energieausweis Gmbh	Indirect evidence	Linz, AustriaHQ checked Sep 16, 2026	11-50	14 contacts →
	Indirect evidence “IfEA - Institut für Energieausweis GmbH is a real estate company based out of Böhmerwaldstraße 3, Linz, Austria.” Source: RevenueBase Database · checked Sep 16, 2026
6	One2zero	Indirect evidence	Salzburg, AustriaHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Source: RevenueBase Database · checked Sep 16, 2026
7	TBH Ingenieur Gmbh	Indirect evidence	Graz, AustriaHQ checked Sep 16, 2026	1,001-5,000	12 contacts →
	Indirect evidence “Die TBH Ingenieur GmbH ist IHR kompetenter Partner für ganzheitliche Lösungen, die Ihr Gebäude und energietechnischen Anlagen energieeffizienter und nachhaltiger machen.” Source: RevenueBase Database · checked Sep 16, 2026
8	Sustainability	Indirect evidence	Wien, AustriaHQ checked Sep 16, 2026	1-10	11 contacts →
	Indirect evidence “At the beginning of any engagement with the topic of sustainability is the corporate carbon footprint, which can be used to determine which investments are necessary and whether…” Source: RevenueBase Database · checked Sep 16, 2026
9	Energiedigital	Indirect evidence	Graz, AustriaHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence “Energiedigital plant, errichtet und optimiert dezentrale Energielösungen für Gebäude und Quartiere.” Source: RevenueBase Database · checked Sep 16, 2026
10	PTM Energy	Indirect evidence	Kirchbichl, AustriaHQ checked Sep 16, 2026	1-10	6 contacts →
	Indirect evidence “Unsere Firmenphilosophie als Energieberatungsunternehmen basiert auf dem Ziel, unseren Kunden dabei zu helfen, ihre Energieeffizienz zu verbessern und ihre Energiekosten zu…” Source: RevenueBase Database · checked Sep 16, 2026
11	GAP Solution	Indirect evidence	Dimbach, AustriaHQ checked Sep 16, 2026	11-50	6 contacts →
	Indirect evidence “Unsere Sanierungslösungen ermöglicht die effiziente energetische Sanierung großer Gebäude hin zum NET-Zero-Standard!” Source: RevenueBase Database · checked Sep 16, 2026
12	Sima Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “Klimaschutz im Hochbau braucht Aktionen.” Source: RevenueBase Database · checked Sep 16, 2026
13	Green Electrics Licht & Energietechnik Gmbh	Indirect evidence	Gleisdorf, AustriaHQ checked Sep 16, 2026	51-200	5 contacts →
	Indirect evidence “Green Electrics unterstützt Sie als Komplettanbieter zuverlässig mit innovativen Lösungen in allen energiewirtschaftlichen Belangen zum Thema Licht, Photovoltaik, Smart Home und…” Source: RevenueBase Database · checked Sep 16, 2026
14	D&e Consulting	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…” Source: RevenueBase Database · checked Sep 16, 2026
15	ABD Gmbh	Indirect evidence	Laakirchen, AustriaHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Dekarbonisierung durch Digitalisierung Energieeffizienz und Emissionseinsparung stehen in Zeiten des Klimawandels im Zentrum des öffentlichen Interesses.” Source: RevenueBase Database · checked Sep 16, 2026
16	M-Tec Energie.Innovativ Gmbh	Indirect evidence	Arnreit, AustriaHQ checked Sep 16, 2026	51-200	3 contacts →
	Indirect evidence “M-TEC setzt sich seit 5 Jahrzehnten für die effiziente Nutzung erneuerbarer Energie ein.” Source: RevenueBase Database · checked Sep 16, 2026
17	Lüftung Schmid Gmbh	Indirect evidence	Rohrendorf Bei Krems, AustriaHQ checked Sep 16, 2026	11-50	2 contacts →
	Indirect evidence “Ihr verlässlicher Partner in allen Fragen der energieeffizienten Haustechnik!” Source: RevenueBase Database · checked Sep 16, 2026
18	Planungsteam E-Plus Gmbh	Indirect evidence	Dornbirn, AustriaHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence “Wir beschäftigen uns bereits seit über zwei Jahrzehnten mit der energieoptimierten Gebäude- und Haustechnikplanung.” Source: RevenueBase Database · checked Sep 16, 2026
19	JA Elektrotechnik	Indirect evidence	Vomp, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Die Firma J-A-Elektrotechnik GmbH wurde mit dem Fokus auf die Modernisierung der Gebäudetechnik gegründet.” Source: RevenueBase Database · checked Sep 16, 2026
20	Eneries Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Efficiency made easy - als Green Tech Unternehmen trägt die EneRies GmbH mithilfe eines all-in one Energiemanagementsystems dazu bei, den Energieverbrauch Ihres Gebäudes…” Source: RevenueBase Database · checked Sep 16, 2026
21	Efficiency Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Consulting for: Energy, Material and Resource Efficiency.” Source: RevenueBase Database · checked Sep 16, 2026
22	Energy Consultants Gmbh	Indirect evidence	Wildermieming, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “ENERGY CONSULTING CONCEPT CONTROLLING CONSUMPTION CONNECT Wir von ENCON stehen zu unserem Wort.” Source: RevenueBase Database · checked Sep 16, 2026
23	TAA Haustechnik E.U	Partial evidence	Wien, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “Consulting, planning of sustainable building technology in the field of heating, ventilation, air conditioning, sanitation, solar and renewable Energy, energy certificate…” Source: RevenueBase Database · checked Sep 16, 2026
24	Carbon Turnaround	Indirect evidence	Wien, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Carbon Turnaround is a leading consulting and advisory firm committed to the transformation of our economy and society to a Net Cero Carbon Society.” Source: RevenueBase Database · checked Sep 16, 2026
25	Solmind Flexco	Indirect evidence	Wien, AustriaHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Als Cleantech-Unternehmen stellen wir uns der Herausforderung, einen der größten CO₂ Emittenten unserer Zeit anzugehen: Gebäude.” 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: commercial building decarbonization 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 commercial building decarbonization firms.
Partial evidence: Its own public description names part of commercial building decarbonization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial building decarbonization 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 51 commercial building decarbonization firms based in Austria

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Commercial building decarbonization firms based in Austria at a glance

As of Sep 16, 2026

38.8%Verified-email coverage

5.7Average contacts per company

1-10Median size (employees)

13.7%Largest-city concentration · Wien

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 51 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 commercial building decarbonization 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 Austria whose own description of what they do matches “commercial building decarbonization 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 commercial building decarbonization 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 commercial building decarbonization firms, and records with no verified work email. Companies headquartered outside Austria 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, 112 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.

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 commercial building decarbonization 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 commercial building decarbonization firms are there based in Austria?

RevenueBase identified 51 commercial building decarbonization firms headquartered in Austria 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?

Techem Austria, headquartered in Innsbruck, tops this list with the largest team on record.

Which city has the most commercial building decarbonization firms?

Wien leads with 7 headquartered companies, followed by Graz (3) and Innsbruck (2).

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 112 verified decision-maker contacts tracked across these 51 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.