Company lists · Data refreshed September 2026

Top 25 Renewable energy investment firms based in Austria

Name: Renewable energy investment firms based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 57 companies tracked

RevenueBase identified 57 renewable energy investment firms headquartered in Austria as of September 2026 and tracks 869 professional contacts across them, including 407 with verified work emails and 12 with mobile numbers. Vienna is the largest hub.

This list covers renewable energy investment 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

57Companies

869Contacts tracked

407Verified emails

12Mobile numbers

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The 25 largest renewable energy investment firms based in Austria

Ranked by team size

Top 25 of 57 renewable energy investment firms based in Austria, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy investment firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	CCEPartial evidence	Vienna, AustriaHQ checked Sep 5, 2026	51-200	207
	“CCE - combined competence in photovoltaics CCE plans, builds, finances and manages alternative investments in the high-growth global sector of photovoltaics, thus creating…” Source: company website · checked Sep 5, 2026
2	RP GlobalStrong evidence	Vienne, AustriaHQ checked Sep 5, 2026	201-500	158
	“RP Global is a large-scale developer with 40+ years of experience in the renewable energy sector.” Source: company website · checked Sep 5, 2026
3	WEB Windenergie AGPartial evidence	Pfaffenschlag Bei Waidhofen, AustriaHQ checked Sep 5, 2026	201-500	91
	“WEB Windenergie AG is a renewables & environment company based in Pfaffenschlag near Waidhofen, Lower Austria.” Source: company website · checked Sep 5, 2026
4	Oekostrom AGPartial evidence	Vienna, AustriaHQ checked Sep 5, 2026	51-200	63
	“Die oekostrom AG ist Produzent und Anbieter von Strom aus erneuerbaren Energiequellen und setzt sich aktiv für eine ökologische, zukunftsfähige Energieversorgung bei Wärme und…” Source: company website · checked Sep 5, 2026
5	HeizmaStrong evidence	Vienna, AustriaHQ checked Sep 5, 2026	51-200	39
	“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…” Source: company website · checked Sep 5, 2026
6	RenalfaStrong evidence	Vienna, AustriaHQ checked Sep 5, 2026	1,001-5,000	36
	“Renalfa Solarpro Group GmbH is a Vienna based clean energy and e-mobility investment group with a focus on renewable energy generation assets.” Source: company website · checked Sep 5, 2026
7	Bloch3Partial evidence	Krumbach Markt, AustriaHQ checked Sep 5, 2026	11-50	28
	“Wir sind ein seit mehr als 25 Jahren erfolgreicher, familiengeführter Projektentwickler und Betreiber im Bereich der erneuerbaren Energien und der nachhaltigen Energiewirtschaft.” Source: company website · checked Sep 5, 2026
8	AustriaenergyIndirect evidence	Vienna, AustriaHQ checked Sep 5, 2026	11-50	24
	“The AustriaEnergy Group is a global independent site developer with technology selección and IPP (Independent Power Producer) of utility-scale wind, green hydrogen and solar…” Source: company website · checked Sep 5, 2026
9	IW GroupPartial evidence	Pottenbrunn, AustriaHQ checked Sep 5, 2026	11-50	19
	“Die IW Group ist eine eigentümergeführte Beteiligungsholding mit Schwerpunkt Erneuerbare Energie.” Source: company website · checked Sep 5, 2026
10	Q-AdvisersPartial evidence	Vienna, AustriaHQ checked Sep 5, 2026	11-50	12
	“Q·ADVISERS is an investment and corporate finance boutique founded by Fritz Schweiger in Vienna and London in 2010.” Source: company website · checked Sep 5, 2026
11	Pv-Invest GmbhIndirect evidence	Krumpendorf, AustriaHQ checked Sep 5, 2026	11-50	12
	“PV-Invest GmbH is the parent company of the PV-Invest Group that generates electricity revenues with its photovoltaic power plants in several countries in Europe.” Source: company website · checked Sep 5, 2026
12	VoltaresStrong evidence	Vienna, AustriaHQ checked Sep 5, 2026	11-50	10
	“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.” Source: company website · checked Sep 5, 2026
13	Energiepark Bruck LeithaPartial evidence	Gemeinde Bruck An Der Leitha, AustriaHQ checked Sep 5, 2026	11-50	10
	“Wir gestalten die Energiezukunft!” Source: company website · checked Sep 5, 2026
14	Coriolis Green Investment SolutionsStrong evidence	Vienna, AustriaHQ checked Sep 5, 2026	1-10	9
	“CORIOLIS Green Investment Solutions is a corporate finance and M&A boutique with an exclusive focus on renewable energy and environmental technology.” Source: company website · checked Sep 5, 2026
15	Krone SonneIndirect evidence	Mattersburg, AustriaHQ checked Sep 5, 2026	11-50	8
	“Hol dir die Sonne aufs Dach!” Source: company website · checked Sep 5, 2026
16	Solana Renewable Technologies GmbhPartial evidence	Graz, AustriaHQ checked Sep 5, 2026	11-50	7
	“SOLANA hat sich der nachhaltigen Erzeugung, Speicherung und Verteilung von erneuerbarer Energie verschrieben.” Source: company website · checked Sep 5, 2026
17	Greesma Energy Services GmbhPartial evidence	Sankt Margarethen An Der Raab, AustriaHQ checked Sep 5, 2026	1-10	5
	“Greesma ist Ihr professioneller Partner für nachhaltige, intelligente und wirtschaftliche Energielösungen.” Source: company website · checked Sep 5, 2026
18	AAE NaturstromPartial evidence	Kötschach-mauthen, AustriaHQ checked Sep 5, 2026	11-50	4
	“Wir garantieren unseren Kunden die Belieferung mit Strom aus 100 Prozent erneuerbaren Energiequellen.” Source: company website · checked Sep 5, 2026
19	Enso GmbhStrong evidence	Raaba-grambach, AustriaHQ checked Sep 5, 2026	1-10	4
	“Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.” Source: company website · checked Sep 5, 2026
20	Nu50 EnergyPartial evidence	Linz, AustriaHQ checked Sep 5, 2026	1-10	3
	“Energiewende aus einer Hand: Als innovatives Unternehmen im Bereich erneuerbare Energien sind wir stolz darauf, individuelle Lösungen zu entwickeln, die zu einer nachhaltigen…” Source: company website · checked Sep 5, 2026
21	Inuvolt GmbhStrong evidence	Wartberg Ob Der Aist, AustriaHQ checked Sep 5, 2026	1-10	2
	“Accelerate the change towards renewable energy” Source: company website · checked Sep 5, 2026
22	FingreenPartial evidence	Wien, AustriaHQ checked Sep 5, 2026	1-10	2
	“Wir begleiten Spezialisten und Newcomer aus der Energie- und Umweltbranche bei der Strategieentwicklung und Finanzierung ihrer nachhaltigen Projekte.” Source: company website · checked Sep 5, 2026
23	Planttech GmbhStrong evidence	Asten, AustriaHQ checked Sep 5, 2026	51-200	2
	“Our Story - Lighting the Path to a Greener World PlantTech was founded in 2010 by a group of passionate industry leaders who saw the potential of renewable energy to revolutionize…” Source: company website · checked Sep 5, 2026
24	Heinzel EnergyIndirect evidence	Vienna, AustriaHQ checked Sep 5, 2026	1-10	2
	“Water · wind · sun” Source: company website · checked Sep 5, 2026
25	Buzzard Energy GmbhStrong evidence	Vienna, AustriaHQ checked Sep 5, 2026	1-10	1
	“Buzzard Energy is an Austrian independent investment firm focused on the European energy and cleantech sector.” Source: company website · checked Sep 5, 2026

Showing 25 of 57 renewable energy investment firms based in Austria

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Renewable energy investment firms based in Austria at a glance

As of Sep 5, 2026

11-50Median size (employees)

ViennaLargest hub · 9 HQs

12Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Verified emails by last verification

0–30

375

31–60

61–90

90–180

180+

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 renewable energy investment firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Austria whose own description of what they do matches “renewable energy investment firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable energy investment 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 an evidence 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, 407 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 5, 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

How many renewable energy investment firms are there based in Austria?

RevenueBase identified 57 renewable energy investment 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?

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

Which city has the most renewable energy investment firms?

Vienna leads with 9 headquartered companies, followed by Wien (9) and Linz (3).

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 407 verified decision-maker contacts tracked across these 57 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 5, 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.