Company lists · Data refreshed September 2026
Top 25 Cleantech startups based in Austria
RevenueBase identified 74 company matches for cleantech startups associated with Austria as of September 2026 and tracks 620 professional contacts across them, including 207 with verified work emails. Vienna is the largest hub.
This list covers company matches for cleantech startups 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 September 19, 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.
The 25 largest cleantech startups based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 53 contacts → | ||||
Exact match “Wolftank Group is a globally active, leading technology partner for energy and environmental solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 45 contacts → | ||||
Exact match “PFAN's global network of expert consultants provides free business coaching and investment facilitation to clean energy entrepreneurs in low- and middle-income countries.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 44 contacts → | ||||
Exact match “Nomen est omen – solar konzentriert sich auf nachhaltige Energiesysteme und -lösungen für das dritte Jahrtausend.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 39 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 31 contacts → | ||||
Exact match “was established in 2002 as an international multilateral partnership to accelerate the uptake of clean energy technologies in developing and emerging markets, promote modern…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 26 contacts → | ||||
Exact match “We make more out of photovoltaics than just electricity.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 20 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 16 contacts → | ||||
Exact match “The Energy Transformation - Our Vision for the 21st Century!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “Das Energieinstitut Vorarlberg ist ein gemeinnütziger Verein zur Beratung, Bildung und Forschung für sinnvollen Energieeinsatz und erneuerbare Energieträger in Dornbirn…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 13 contacts → | ||||
Exact match “Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 11 contacts → | ||||
Exact match “Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Green Energy Lab, a research initiative for sustainable energy solutions, is part of the Austrian innovation campaign “Vorzeigeregion Energie” (“Showcase Region Energy”) of the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Sunlumo is new - a green technology company with a focus on solar energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “SOLANA hat sich der nachhaltigen Erzeugung, Speicherung und Verteilung von erneuerbarer Energie verschrieben.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “Wir bauen digitale Lösungen und entwickeln innovative Geschäftsmodelle rund um die Themen Energie und Umwelt.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “The Global Cleantech Innovation Programme (GCIP) of UNIDO, supported through the Global Environment Facility (GEF) in partnership with the Green Climate Fund (GCF), promotes clean…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “Private sector initiative for building Bridges into a sustainable and green future - Codex Partnership of global industrial players and startups - Conversion of the energy system…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Greesma ist Ihr professioneller Partner für nachhaltige, intelligente und wirtschaftliche Energielösungen.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “At novventos, we’re driven by the ambition to develop breakthrough technology that harnesses nature’s power to produce clean, sustainable energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Energiewende aus einer Hand: Als innovatives Unternehmen im Bereich erneuerbare Energien sind wir stolz darauf, individuelle Lösungen zu entwickeln, die zu einer nachhaltigen…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 3 contacts → | ||||
Exact match “Wir befassen uns seit Bestehen unseres Unternehmens, mehr als 30 Jahre lang, mit der Planung und dem Engineering von Erneuerbarer Energie und Gebäudetechnik.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “Wir unterstützen Betriebe dabei von der Energiewende zu profitieren.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “cleantech startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 74 cleantech startups based in Austria
See the full list, filter by size, metro and specialty, and access 207 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Cleantech startups based in Austria at a glance
As of Sep 19, 2026Companies by employee count
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 74 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 “cleantech startups” 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 207 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 September 19, 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 “cleantech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cleantech startups are there based in Austria?
RevenueBase identified 74 company matches for cleantech startups associated with Austria as of September 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?
Wolftank Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most cleantech startups?
Vienna leads with 18 company records, followed by Linz (4) and Graz (3).
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 207 professional contacts with verified work emails tracked across these 74 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 September 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 74 cleantech startups based in Austria. Start with a free account, no credit card.
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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.
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Company intelligence · public preview
Top 25 cleantech startups based in Austria
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 74 matching company records for cleantech startups based in Austria, with 620 tracked contacts and 207 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cleantech startups based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Wolftank Groupwolftankgroup.comHQ: Innsbruck, AustriaReported employees: 201-500 | Innsbruck, Austria | 201-500 | Exact match | 53 contacts → |
“Wolftank Group is a globally active, leading technology partner for energy and environmental solutions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 45 contacts → |
“PFAN's global network of expert consultants provides free business coaching and investment facilitation to clean energy entrepreneurs in low- and middle-income countries.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Energy3000 Solar Gmbhenergy3000.comHQ: Müllendorf, AustriaReported employees: 51-200 | Müllendorf, Austria | 51-200 | Exact match | 44 contacts → |
“Nomen est omen – solar konzentriert sich auf nachhaltige Energiesysteme und -lösungen für das dritte Jahrtausend.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Heizmaheizma.atHQ: Vienna, AustriaReported employees: 51-200 | Vienna, Austria | 51-200 | Exact match | 39 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | REEEPreeep.org HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 31 contacts → |
“was established in 2002 as an international multilateral partnership to accelerate the uptake of clean energy technologies in developing and emerging markets, promote modern…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  My-Pvmy-pv.comHQ: Neuzeug, AustriaReported employees: 51-200 | Neuzeug, Austria | 51-200 | Exact match | 26 contacts → |
“We make more out of photovoltaics than just electricity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  E7 Energy Innovation & Engineeringe-sieben.atHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 20 contacts → |
“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Collective Energycollective-energy.atHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 16 contacts → |
“The Energy Transformation - Our Vision for the 21st Century!” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Energieinstitut Vorarlbergenergieinstitut.atHQ: Dornbirn, AustriaReported employees: 51-200 | Dornbirn, Austria | 51-200 | Exact match | 15 contacts → |
“Das Energieinstitut Vorarlberg ist ein gemeinnütziger Verein zur Beratung, Bildung und Forschung für sinnvollen Energieeinsatz und erneuerbare Energieträger in Dornbirn…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  One2zeroone2zero.comHQ: Salzburg, AustriaReported employees: 11-50 | Salzburg, Austria | 11-50 | Exact match | 13 contacts → |
“Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Conversio Energie Gmbhconversioenergie.atHQ: Spittal An Der Drau, AustriaReported employees: 201-500 | Spittal An Der Drau, Austria | 201-500 | Exact match | 11 contacts → |
“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Green Energy LABgreenenergylab.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 10 contacts → |
“Green Energy Lab, a research initiative for sustainable energy solutions, is part of the Austrian innovation campaign “Vorzeigeregion Energie” (“Showcase Region Energy”) of the…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Voltaresvoltares.comHQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 10 contacts → |
“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sunlumo Technology Gmbhsunlumo-energy.comHQ: Perg, AustriaReported employees: 11-50 | Perg, Austria | 11-50 | Exact match | 9 contacts → |
“Sunlumo is new - a green technology company with a focus on solar energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Solana Renewable Technologies Gmbhsolana-energy.atHQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 7 contacts → |
“SOLANA hat sich der nachhaltigen Erzeugung, Speicherung und Verteilung von erneuerbarer Energie verschrieben.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Wertstatt 8 Gmbhwertstatt8.at HQ: Linz, AustriaReported employees: 1-10 | Linz, Austria | 1-10 | Exact match | 7 contacts → |
“Wir bauen digitale Lösungen und entwickeln innovative Geschäftsmodelle rund um die Themen Energie und Umwelt.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Unido Cleantech Innovationunido.org HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 7 contacts → |
“The Global Cleantech Innovation Programme (GCIP) of UNIDO, supported through the Global Environment Facility (GEF) in partnership with the Green Climate Fund (GCF), promotes clean…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Green Energy Center Europegreen-energy-center.com HQ: Innsbruck, AustriaReported employees: 11-50 | Innsbruck, Austria | 11-50 | Exact match | 5 contacts → |
“Private sector initiative for building Bridges into a sustainable and green future - Codex Partnership of global industrial players and startups - Conversion of the energy system…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Solah Gmbhsolah-group.comHQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 5 contacts → |
“Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Greesma Energy Services Gmbhgreesma.comHQ: Sankt Margarethen An Der Raab, AustriaReported employees: 1-10 | Sankt Margarethen An Der Raab, Austria | 1-10 | Exact match | 5 contacts → |
“Greesma ist Ihr professioneller Partner für nachhaltige, intelligente und wirtschaftliche Energielösungen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Novventosnovventos.comHQ: Neukirchen, AustriaReported employees: 1-10 | Neukirchen, Austria | 1-10 | Exact match | 4 contacts → |
“At novventos, we’re driven by the ambition to develop breakthrough technology that harnesses nature’s power to produce clean, sustainable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Enso Gmbhenso.atHQ: Raaba-grambach, AustriaReported employees: 1-10 | Raaba-grambach, Austria | 1-10 | Exact match | 4 contacts → |
“Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Nu50 Energynu50.energyHQ: Linz, AustriaReported employees: 1-10 | Linz, Austria | 1-10 | Exact match | 3 contacts → |
“Energiewende aus einer Hand: Als innovatives Unternehmen im Bereich erneuerbare Energien sind wir stolz darauf, individuelle Lösungen zu entwickeln, die zu einer nachhaltigen…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Büro FÜR Erneuerbare Energie Riebenbauerriebenbauer.at HQ: Pinggau, AustriaReported employees: 11-50 | Pinggau, Austria | 11-50 | Exact match | 3 contacts → |
“Wir befassen uns seit Bestehen unseres Unternehmens, mehr als 30 Jahre lang, mit der Planung und dem Engineering von Erneuerbarer Energie und Gebäudetechnik.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Kleinkraftkleinkraft.co.atHQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 3 contacts → |
“Wir unterstützen Betriebe dabei von der Energiewende zu profitieren.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 74 company matches
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Cleantech startups: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
74 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 74 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for cleantech startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cleantech startups did RevenueBase find based in Austria?
The saved snapshot records 74 matching company records, 620 tracked contacts and 207 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cleantech startups by geography
- Cleantech startups based in Belo Horizonte, Brazil
- Cleantech startups based in Curitiba, Brazil
- Cleantech startups based in Fortaleza, Brazil
- Cleantech startups based in Porto Alegre, Brazil
- Cleantech startups based in Rio De Janeiro, Brazil
- Cleantech startups based in Sao Paulo, Brazil
- Cleantech startups based in Calgary, Canada
- Cleantech startups based in Toronto, Canada
- Cleantech startups based in Vancouver, Canada
- Cleantech startups based in Ahmedabad, India
- Cleantech startups based in Bangalore, India
- Cleantech startups based in Chennai, India
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 cleantech startups based in Austria. Snapshot: September 19, 2026. https://revenuebase.ai/companies/cleantech-startups/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cleantech startups based in Belo Horizonte, Brazil
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Company intelligence · public preview
Top 25 cleantech startups based in Austria
RevenueBase records 74 matching company records for cleantech startups based in Austria, with 620 tracked contacts and 207 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cleantech startups based in Austria
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Wolftank Groupwolftankgroup.com HQ: Innsbruck, AustriaReported employees: 201-500 | Innsbruck, Austria | 201-500 | Exact match | 53 contacts → |
“Wolftank Group is a globally active, leading technology partner for energy and environmental solutions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 45 contacts → |
“PFAN's global network of expert consultants provides free business coaching and investment facilitation to clean energy entrepreneurs in low- and middle-income countries.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Energy3000 Solar Gmbhenergy3000.com HQ: Müllendorf, AustriaReported employees: 51-200 | Müllendorf, Austria | 51-200 | Exact match | 44 contacts → |
“Nomen est omen – solar konzentriert sich auf nachhaltige Energiesysteme und -lösungen für das dritte Jahrtausend.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Heizmaheizma.at HQ: Vienna, AustriaReported employees: 51-200 | Vienna, Austria | 51-200 | Exact match | 39 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | REEEPreeep.org HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 31 contacts → |
“was established in 2002 as an international multilateral partnership to accelerate the uptake of clean energy technologies in developing and emerging markets, promote modern…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | My-Pvmy-pv.com HQ: Neuzeug, AustriaReported employees: 51-200 | Neuzeug, Austria | 51-200 | Exact match | 26 contacts → |
“We make more out of photovoltaics than just electricity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | E7 Energy Innovation & Engineeringe-sieben.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 20 contacts → |
“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Collective Energycollective-energy.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 16 contacts → |
“The Energy Transformation - Our Vision for the 21st Century!” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Energieinstitut Vorarlbergenergieinstitut.at HQ: Dornbirn, AustriaReported employees: 51-200 | Dornbirn, Austria | 51-200 | Exact match | 15 contacts → |
“Das Energieinstitut Vorarlberg ist ein gemeinnütziger Verein zur Beratung, Bildung und Forschung für sinnvollen Energieeinsatz und erneuerbare Energieträger in Dornbirn…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | One2zeroone2zero.com HQ: Salzburg, AustriaReported employees: 11-50 | Salzburg, Austria | 11-50 | Exact match | 13 contacts → |
“Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Conversio Energie Gmbhconversioenergie.at HQ: Spittal An Der Drau, AustriaReported employees: 201-500 | Spittal An Der Drau, Austria | 201-500 | Exact match | 11 contacts → |
“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Green Energy LABgreenenergylab.at HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 10 contacts → |
“Green Energy Lab, a research initiative for sustainable energy solutions, is part of the Austrian innovation campaign “Vorzeigeregion Energie” (“Showcase Region Energy”) of the…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Voltaresvoltares.com HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 10 contacts → |
“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sunlumo Technology Gmbhsunlumo-energy.com HQ: Perg, AustriaReported employees: 11-50 | Perg, Austria | 11-50 | Exact match | 9 contacts → |
“Sunlumo is new - a green technology company with a focus on solar energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Solana Renewable Technologies Gmbhsolana-energy.at HQ: Graz, AustriaReported employees: 11-50 | Graz, Austria | 11-50 | Exact match | 7 contacts → |
“SOLANA hat sich der nachhaltigen Erzeugung, Speicherung und Verteilung von erneuerbarer Energie verschrieben.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Wertstatt 8 Gmbhwertstatt8.at HQ: Linz, AustriaReported employees: 1-10 | Linz, Austria | 1-10 | Exact match | 7 contacts → |
“Wir bauen digitale Lösungen und entwickeln innovative Geschäftsmodelle rund um die Themen Energie und Umwelt.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Unido Cleantech Innovationunido.org HQ: Vienna, AustriaReported employees: 11-50 | Vienna, Austria | 11-50 | Exact match | 7 contacts → |
“The Global Cleantech Innovation Programme (GCIP) of UNIDO, supported through the Global Environment Facility (GEF) in partnership with the Green Climate Fund (GCF), promotes clean…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Green Energy Center Europegreen-energy-center.com HQ: Innsbruck, AustriaReported employees: 11-50 | Innsbruck, Austria | 11-50 | Exact match | 5 contacts → |
“Private sector initiative for building Bridges into a sustainable and green future - Codex Partnership of global industrial players and startups - Conversion of the energy system…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Solah Gmbhsolah-group.com HQ: Mattersburg, AustriaReported employees: 11-50 | Mattersburg, Austria | 11-50 | Exact match | 5 contacts → |
“Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Greesma Energy Services Gmbhgreesma.com HQ: Sankt Margarethen An Der Raab, AustriaReported employees: 1-10 | Sankt Margarethen An Der Raab, Austria | 1-10 | Exact match | 5 contacts → |
“Greesma ist Ihr professioneller Partner für nachhaltige, intelligente und wirtschaftliche Energielösungen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Novventosnovventos.com HQ: Neukirchen, AustriaReported employees: 1-10 | Neukirchen, Austria | 1-10 | Exact match | 4 contacts → |
“At novventos, we’re driven by the ambition to develop breakthrough technology that harnesses nature’s power to produce clean, sustainable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Enso Gmbhenso.at HQ: Raaba-grambach, AustriaReported employees: 1-10 | Raaba-grambach, Austria | 1-10 | Exact match | 4 contacts → |
“Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Nu50 Energynu50.energy HQ: Linz, AustriaReported employees: 1-10 | Linz, Austria | 1-10 | Exact match | 3 contacts → |
“Energiewende aus einer Hand: Als innovatives Unternehmen im Bereich erneuerbare Energien sind wir stolz darauf, individuelle Lösungen zu entwickeln, die zu einer nachhaltigen…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Büro FÜR Erneuerbare Energie Riebenbauerriebenbauer.at HQ: Pinggau, AustriaReported employees: 11-50 | Pinggau, Austria | 11-50 | Exact match | 3 contacts → |
“Wir befassen uns seit Bestehen unseres Unternehmens, mehr als 30 Jahre lang, mit der Planung und dem Engineering von Erneuerbarer Energie und Gebäudetechnik.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Kleinkraftkleinkraft.co.at HQ: Vienna, AustriaReported employees: 1-10 | Vienna, Austria | 1-10 | Exact match | 3 contacts → |
“Wir unterstützen Betriebe dabei von der Energiewende zu profitieren.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 74 company matches
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Cleantech startups: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
74 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 74 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for cleantech startups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cleantech startups did RevenueBase find based in Austria?
The saved snapshot records 74 matching company records, 620 tracked contacts and 207 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 cleantech startups based in Austria. Snapshot: September 19, 2026. https://revenuebase.ai/companies/cleantech-startups/austria.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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