Company lists · Data refreshed September 2026

Top 15 Private equity firms focused on sustainability companies based in Austria

RevenueBase identified 36 private equity firms focused on sustainability companies headquartered in Austria as of September 2026 and tracks 124 professional contacts across them, including 42 with verified work emails. Vienna is the largest hub.

This list covers private equity firms focused on sustainability companies 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 29, 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 29, 2026 86% judged on-target in blind review
36Companies
124Contacts tracked
42Verified emails
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The 15 largest private equity firms focused on sustainability companies based in Austria

Ranked by team size
Top 15 of 36 private equity firms focused on sustainability companies based in Austria, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to private equity firms focused on sustainability 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidencePottenbrunn, AustriaHQ checked Sep 29, 202611-5019 contacts →

Indirect evidence

“Die IW Group ist eine eigentümergeführte Beteiligungsholding mit Schwerpunkt Erneuerbare Energie.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceVienna, AustriaHQ checked Sep 29, 202611-5012 contacts →

Indirect evidence

“Q·ADVISERS is an investment and corporate finance boutique founded by Fritz Schweiger in Vienna and London in 2010.”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceVienna, AustriaHQ checked Sep 29, 20261-109 contacts →

Strong evidence

“CORIOLIS Green Investment Solutions is a corporate finance and M&A boutique with an exclusive focus on renewable energy and environmental technology.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-109 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceVienna, AustriaHQ checked Sep 29, 20261-107 contacts →

Partial evidence

“We are a privately held investment company with offices in Vienna and Bucharest.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceVienna, AustriaHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“CoastCap is a Vienna-based investment firm that primarily invests in private capital markets.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceVienna, AustriaHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“Epoona specializes in investing and developing small- and medium sized technology companies with a focus in the climate & industrial tech sectors.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceRaaba-grambach, AustriaHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.”

Source: RevenueBase Database · checked Sep 29, 2026
9Strong evidenceVienna, AustriaHQ checked Sep 29, 20261-103 contacts →

Strong evidence

“SART Capital Partners is a private equity GP for sustainability-driven buyout investments into special opportunities, secondaries and underperforming assets in the lower…”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“We are a team of passionate entrepreneurs specialized in sustainable M&A transactions of owner-driven businesses in Europe.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Wir sind ein unabhängiges Unternehmen für Immobilieninvestments und stehen für nachhaltige Geldanlagen.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“West Asia Investment Partners (WAIP) is a European alternative investment management firm pursuing high-potential, innovative, and disruptive businesses to invest, add value and…”

Source: RevenueBase Database · checked Sep 29, 2026
13Strong evidenceVienna, AustriaHQ checked Sep 29, 2026201-5001 contacts →

Strong evidence

“We are a private equity and venture capital investment group, specialising in innovative, technology-driven companies across various industries.”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceVienna, AustriaHQ checked Sep 29, 20261-101 contacts →

Strong evidence

“Buzzard Energy is an Austrian independent investment firm focused on the European energy and cleantech sector.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceSchwechat, AustriaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Wir bieten fundierte Beratung für Anleger:innen und Unternehmen, die nachhaltige Finanzlösungen mit echter Wirkung suchen.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 15 of 36 private equity firms focused on sustainability companies based in Austria

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Private equity firms focused on sustainability companies based in Austria at a glance

As of Sep 29, 2026
33.9%Verified-email coverage
3.4Average contacts per company
1-10Median size (employees)
22.2%Largest-city concentration · Vienna
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
4
51-200
2
201-500
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 36 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 private equity firms focused on sustainability 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 Austria whose own description of what they do matches “private equity firms focused on sustainability 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 private equity firms focused on sustainability 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 private equity firms focused on sustainability companies, 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, 42 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 29, 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 private equity firms focused on sustainability 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 private equity firms focused on sustainability companies are there based in Austria?

RevenueBase identified 36 private equity firms focused on sustainability companies 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?

IW Group, headquartered in Pottenbrunn, tops this list with the largest team on record.

Which city has the most private equity firms focused on sustainability companies?

Vienna leads with 8 headquartered companies, followed by Wien (8) and Graz (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 42 verified decision-maker contacts tracked across these 36 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 29, 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.