Company lists · Data refreshed November 2026

Top 20 Green technology companies based in Austria

RevenueBase identified 41 company matches for green technology companies associated with Austria as of November 2026 and tracks 472 professional contacts across them, including 195 with verified work emails. Vienna is the largest hub.

This list covers company matches for green technology companies associated with Austria, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
41Companies
472Contacts tracked
195Verified emails
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The 20 largest green technology companies based in Austria

Ranked by team size
Top 20 of 41 company matches for green technology companies based in Austria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchRum, AustriaHQ recorded Nov 6, 2026201-50070 contacts →

Exact match

“Techem ist einer der führenden Servicepartner der Immobilienwirtschaft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchInnsbruck, AustriaHQ recorded Nov 6, 2026201-50056 contacts →

Exact match

“Wolftank Group is a globally active, leading technology partner for energy and environmental solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchOber-grafendorf, AustriaHQ recorded Nov 6, 2026201-50054 contacts →

Exact match

“Sustainable solutions for energy and water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVienna, AustriaHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Wir geben Häusern eine Zukunft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchVienna, AustriaHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“We at EET, Ermafa Environmental Technologies GmbH are committed to developing innovative and sustainable solutions for a cleaner future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWels, AustriaHQ recorded Nov 6, 2026501-1,00035 contacts →

Exact match

“Unsere Umwelt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPerg, AustriaHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Sunlumo is new - a green technology company with a focus on solar energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGmunden, AustriaHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Als produktunabhängige Komplett-Anbieterin bieten wir unseren Kundinnen seit 1995 innovative und nachhaltige Gesamtlösungen in den Bereichen Energie, Umwelt und Ressourcenschonung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKlagenfurt, AustriaHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Seit Jahrzehnten beschäftigen wir uns mit Energie- und Umweltdaten in Unternehmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVienna, AustriaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Energy Changes Projektentwicklung GmbH is a climate and sustainability advisory and project developer based in Vienna, Austria.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVienna, AustriaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Wir sind ein Beratungsunternehmen für Nachhaltigkeit, Energie & Klimaschutz mit Sitz in Wien.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLinz, AustriaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Wir bauen digitale Lösungen und entwickeln innovative Geschäftsmodelle rund um die Themen Energie und Umwelt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchVienna, AustriaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Sustainista is enabling organizations to measure their sustainability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchVienna, AustriaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSchlierbach, AustriaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Unsere Mission: Wir stellen den ökologischen Fußabdruck von Produkten und Organisationen in den Mittelpunkt und erarbeiten gemeinsam mit unseren Kunden innovative Maßnahmenpakete…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchInnsbruck, AustriaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“English version below - Über uns Wir unterstützen Dich dabei, Deinen Betrieb, Deine Veranstaltung oder Deine Region messbar nachhaltiger und wirksamer zu machen: mit ehrlichen…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPinggau, AustriaHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Wir befassen uns seit Bestehen unseres Unternehmens, mehr als 35 Jahre lang, mit der Planung und dem Engineering von Erneuerbarer Energie und Gebäudetechnik.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchVienna, AustriaHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Als Cleantech-Unternehmen stellen wir uns der Herausforderung, einen der größten CO₂ Emittenten unserer Zeit anzugehen: Gebäude.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPinsdorf, AustriaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“M-TEC International, based in Austria, is a “Green-Tech” company with a special focus on the development and production of total energy solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 20 of 41 green technology companies based in Austria

See the full list, filter by size, metro and specialty, and access 195 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green technology companies based in Austria at a glance

As of Nov 6, 2026
41.3%Verified-email coverage
11.5Average contacts per company
11-50Median size (employees)
24.4%Largest-city concentration · Vienna
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
11
51-200
3
201-500
5
501-1,000
1
1,001-5,000
1

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 41 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Austria whose business descriptions match “green technology companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 195 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “green technology companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green technology companies are there based in Austria?

RevenueBase identified 41 company matches for green technology companies associated with Austria as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Techem Austria tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most green technology companies?

Vienna leads with 10 company records, followed by Bad Ischl (2) and Graz (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 195 professional contacts with verified work emails tracked across these 41 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.