Company lists · Data refreshed October 2026

Top 25 District heating solar companies based in Austria

RevenueBase identified 71 company matches for district heating solar companies associated with Austria as of October 2026 and tracks 875 professional contacts across them, including 298 with verified work emails. Vienna is the largest hub.

This list covers company matches for district heating solar 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 October 11, 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 Oct 11, 2026 How this list was built
71Companies
875Contacts tracked
298Verified emails
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The 25 largest district heating solar companies based in Austria

Ranked by team size
Top 25 of 71 company matches for district heating solar companies based in Austria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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 matchMatrei, AustriaHQ recorded Oct 11, 2026501-1,000141 contacts →

Exact match

“WIR SORGEN FÜR IHR WOHLBEFINDEN.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2Exact matchVienna, AustriaHQ recorded Oct 11, 2026201-50094 contacts →

Exact match

“Vaillant Österreich bietet #energiesparende und #umweltschonende Systeme für #Heizen,#Kühlen und #Warmwasser.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3Exact matchVienna, AustriaHQ recorded Oct 11, 202651-20048 contacts →

Exact match

“We’re building Austria’s fastest-growing clean energy company, combining technology, process excellence, and hands-on execution to make renewable heating and solar power radically…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4Exact matchGraz, AustriaHQ recorded Oct 11, 202611-5027 contacts →

Exact match

“SOLID brings together extraordinary knowledge, experience in market application and R&D in areas of planning and operation of large-scale solar thermal energy systems and solar…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5Exact matchLangkampfen, AustriaHQ recorded Oct 11, 202651-20025 contacts →

Exact match

“A complete heating concept solution is presented in a Heliotherm heat pump system.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6Exact matchSankt Veit An Der Glan, AustriaHQ recorded Oct 11, 2026201-50025 contacts →

Exact match

“As a leading specialist in solar energy since 1993, based in St.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7Exact matchVienna, AustriaHQ recorded Oct 11, 202611-5024 contacts →

Exact match

“beyond carbon energy konzipiert, plant, realisiert, finanziert und betreibt weitestgehend emissionsfreie Wärme- und Kälteversorgung für Bestands- und Neubauimmobilien.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8Exact matchWeissenkirchen Im Attergau, AustriaHQ recorded Oct 11, 202651-20023 contacts →

Exact match

“Aqotec GmbH with its headquarter in Austria is specialisted in renewable engery solutions in the field of biomass.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9Exact matchVienna, AustriaHQ recorded Oct 11, 202651-20023 contacts →

Exact match

“Smart heating.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10Exact matchRied Im Innkreis, AustriaHQ recorded Oct 11, 202651-20021 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11Exact matchHartkirchen, AustriaHQ recorded Oct 11, 202651-20016 contacts →

Exact match

“ECOTHERM - The leading brand for individual hot water, steam and solar systems for hotels, hospitals and industrial applications.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12Exact matchWels, AustriaHQ recorded Oct 11, 20261-1011 contacts →

Exact match

“PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13Exact matchWals Bei Salzburg, AustriaHQ recorded Oct 11, 202611-5010 contacts →

Exact match

“VAS is an innovative, technology-driven full-service provider in the field of biomass plants, with over 30 years of experience.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14Exact matchTerfens, AustriaHQ recorded Oct 11, 202611-509 contacts →

Exact match

“Seit der Gründung im Jahr 1992 hat sich technisch viel verändert - unser Leitbild ist jedoch dasselbe geblieben.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15Exact matchVienna, AustriaHQ recorded Oct 11, 202611-508 contacts →

Exact match

“Verwandle deine alte Ölheizung in einen innovativen Wärmespeicher – speichere überschüssige Energie und sicher dir eine nachhaltige, unabhängige Zukunft.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16Exact matchKirchbichl, AustriaHQ recorded Oct 11, 202611-507 contacts →

Exact match

“Alles was das moderne Einfamilienhaus braucht.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17Exact matchSankt Johann In Tirol, AustriaHQ recorded Oct 11, 202611-507 contacts →

Exact match

“Die Ortswärme St.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18Exact matchBrunn Am Gebirge, AustriaHQ recorded Oct 11, 202611-505 contacts →

Exact match

“Wir bieten schlüsselfertige Photovoltaik-Anlagen und Wärmepumpen für Gewerbebetriebe, Logistikdienstleister, Mehrparteienhäuser und Einfamilienhäuser.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19Exact matchInnsbruck, AustriaHQ recorded Oct 11, 202611-504 contacts →

Exact match

“WIR SIND Energiespezialisten.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20Exact matchWeiler, AustriaHQ recorded Oct 11, 202611-503 contacts →

Exact match

“Wir entwickeln und produzieren innovative Lösungen für Nah- und Fernwärme.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21Exact matchPölfing-brunn, AustriaHQ recorded Oct 11, 20261-103 contacts →

Exact match

“Fernheizwerk Pölfing Brunn”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22Exact matchSeekirchen, AustriaHQ recorded Oct 11, 2026201-5003 contacts →

Exact match

“Windhager Beteiligungs GmbH is a company based out of ANTON-WINDHAGER-STRASSE 20, Seekirchen, Salzburg, Austria.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23Exact matchArnreit, AustriaHQ recorded Oct 11, 202651-2002 contacts →

Exact match

“M-TEC setzt sich seit 5 Jahrzehnten für die effiziente Nutzung erneuerbarer Energie ein.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24Exact matchSalzburg, AustriaHQ recorded Oct 11, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25Exact matchVienna, AustriaHQ recorded Oct 11, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

Showing 25 of 71 district heating solar companies based in Austria

See the full list, filter by size, metro and specialty, and access 298 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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District heating solar companies based in Austria at a glance

As of Oct 11, 2026
34.1%Verified-email coverage
12.3Average contacts per company
11-50Median size (employees)
11.3%Largest-city concentration · Vienna
Oct 11, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
21
51-200
12
201-500
6
501-1,000
2

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 71 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 “district heating solar 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 298 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 October 11, 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 “district heating solar companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many district heating solar companies are there based in Austria?

RevenueBase identified 71 company matches for district heating solar companies associated with Austria as of October 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?

IDM Energiesysteme Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most district heating solar companies?

Vienna leads with 8 company records, followed by Graz (3) and Dornbirn (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 298 professional contacts with verified work emails tracked across these 71 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 October 11, 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.