Company lists · Data refreshed September 2026

Top 25 Renewable energy suppliers based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 207 companies tracked

RevenueBase identified 207 renewable energy suppliers headquartered in Austria as of September 2026 and tracks 3,191 professional contacts across them, including 1,671 with verified work emails. Wien is the largest hub.

This list covers renewable energy suppliers 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 17, 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 17, 2026 86% judged on-target in blind review

207Companies

3,191Contacts tracked

1,671Verified emails

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The 25 largest renewable energy suppliers based in Austria

Ranked by team size

Top 25 of 207 renewable energy suppliers based in Austria, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy suppliers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Verbund	Indirect evidence	Wien, AustriaHQ checked Sep 17, 2026	1,001-5,000	908 contacts →
	Indirect evidence “VERBUND is Austria's leading utility and one of the largest producers of hydroelectricity in Europe.” Source: RevenueBase Database · checked Sep 17, 2026
2	Kelag Energie	Partial evidence	Klagenfurt, AustriaHQ checked Sep 17, 2026	1,001-5,000	434 contacts →
	Partial evidence “Der Kelag-Konzern ist eines der führenden Energiedienstleistungsunternehmen in Österreich.” Source: RevenueBase Database · checked Sep 17, 2026
3	ENERY	Strong evidence	Vienna, AustriaHQ checked Sep 17, 2026	201-500	219 contacts →
	Strong evidence “Enery is an operations-led renewable power infrastructure company which provides competitive and reliable green electricity to its customers.” Source: RevenueBase Database · checked Sep 17, 2026
4	Burgenland Energie AG	Partial evidence	Eisenstadt, AustriaHQ checked Sep 17, 2026	501-1,000	182 contacts →
	Partial evidence “Die Burgenland Energie AG ist ein innovationsgetriebenes österreichisches Energie-Dienstleistungsunternehmen, das massiv in den Ausbau erneuerbarer Energien investiert.” Source: RevenueBase Database · checked Sep 17, 2026
5	RP Global	Strong evidence	Vienne, AustriaHQ checked Sep 17, 2026	201-500	158 contacts →
	Strong evidence “RP Global is a large-scale developer with 40+ years of experience in the renewable energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
6	IDM Energiesysteme Gmbh	Indirect evidence	Matrei, AustriaHQ checked Sep 17, 2026	501-1,000	136 contacts →
	Indirect evidence “WIR SORGEN FÜR IHR WOHLBEFINDEN.” Source: RevenueBase Database · checked Sep 17, 2026
7	WEB Windenergie AG	Partial evidence	Pfaffenschlag Bei Waidhofen, AustriaHQ checked Sep 17, 2026	201-500	91 contacts →
	Partial evidence “WEB Windenergie AG is a renewables & environment company based in Pfaffenschlag near Waidhofen, Lower Austria.” Source: RevenueBase Database · checked Sep 17, 2026
8	Oekostrom AG	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	63 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
9	Swimsol Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	58 contacts →
	Indirect evidence “European solar experts who built the world's first floating solar platform at sea, SolarSea®, in 2014.” Source: RevenueBase Database · checked Sep 17, 2026
10	Energy3000 Solar Gmbh	Partial evidence	Müllendorf, AustriaHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “Nomen est omen – solar konzentriert sich auf nachhaltige Energiesysteme und -lösungen für das dritte Jahrtausend.” Source: RevenueBase Database · checked Sep 17, 2026
11	Heizma	Strong evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	39 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 17, 2026
12	suntastic.solar	Partial evidence	Bisamberg, AustriaHQ checked Sep 17, 2026	51-200	32 contacts →
	Partial evidence “Als führendes österreichisches Unternehmen für erneuerbare Energien bieten wir Elektrikern, Installateuren und Dachdeckern sowohl hochwertige Photovoltaik-Produkte als auch eine…” Source: RevenueBase Database · checked Sep 17, 2026
13	Austriaenergy	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 17, 2026
14	Sonnenkraft Gmbh	Partial evidence	Sankt Veit An Der Glan, AustriaHQ checked Sep 17, 2026	201-500	24 contacts →
	Partial evidence “As a leading specialist in solar energy since 1993, based in St.” Source: RevenueBase Database · checked Sep 17, 2026
15	Energie Ried Gesellschaft M.B.H	Indirect evidence	Ried Im Innkreis, AustriaHQ checked Sep 17, 2026	51-200	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	10hoch4 Energiesysteme	Indirect evidence	Theresienfeld, AustriaHQ checked Sep 17, 2026	51-200	20 contacts →
	Indirect evidence “Projektentwicklung, Beratung, Planung, Umsetzung von PV-Projekten für Gewerbe und Industrie” Source: RevenueBase Database · checked Sep 17, 2026
17	Ecowind Handels	Indirect evidence	Kilb, AustriaHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “ECOwind is an Austrian pioneer in the field of wind power.” Source: RevenueBase Database · checked Sep 17, 2026
18	Selina Photovoltaic Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “We are a professional full-service implementation partner specializing in the planning, project development, construction and operation of large-scale photovoltaic systems for…” Source: RevenueBase Database · checked Sep 17, 2026
19	E-Werke Frastanz	Indirect evidence	Frastanz, AustriaHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “Seit über 100 Jahren sind wir – die E-Werke Frastanz – mit über 80 Mitarbeitern in den unterschiedlichsten Bereichen für unsere Kunden im Einsatz.” Source: RevenueBase Database · checked Sep 17, 2026
20	SEM Energie- UND Gebäudemanagement Gmbh	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “SEM Energie- und Gebäudemanagement GmbH Wir sind ein stark expandierendes Unternehmen im Bereich der Energiedienstleistungen und dem Gebäudemanagement.” Source: RevenueBase Database · checked Sep 17, 2026
21	Ökoenergie	Partial evidence	Wolkersdorf, AustriaHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Wir sind Windkraftpionier – Die ÖKOENERGIE Gruppe mit Firmensitz in Obersdorf, NÖ, ist seit 1995 im Bereich Erneuerbare Energie tätig und zählt damit zu den österreichischen…” Source: RevenueBase Database · checked Sep 17, 2026
22	Krannich Solar Austria	Indirect evidence	Wels, AustriaHQ checked Sep 17, 2026	501-1,000	13 contacts →
	Indirect evidence “Impressum: Krannich Solar GmbH Ligusterstraße 4 A-4600 Wels Tel:+43 (0)7242 932391-10 Fax:+43 (0)7242 932391-19 E-Mail info[at]at.krannich-solar.com Website Landesgericht Wels…” Source: RevenueBase Database · checked Sep 17, 2026
23	One2zero	Indirect evidence	Salzburg, AustriaHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Vor dem Hintergrund aktueller klimatischer Prozesse, neuer gesetzlicher Rahmenbedingungen und hoher Kosten wird Dekarbonisierung zu einem der wichtigsten Themen in der…” Source: RevenueBase Database · checked Sep 17, 2026
24	Eco-Tec.At Photovoltaics Gmbh	Indirect evidence	Irdning-donnersbachtal, AustriaHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “Überzeugt von dem enormen Potential der Sonne, ist es unser Antrieb, dieses für jeden einfach und zuverlässig nutzbar zu machen.” Source: RevenueBase Database · checked Sep 17, 2026
25	Ourpower Energiegenossenschaft SCE MBH	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Unsere Vision ist eine Welt, in der Menschen verantwortungsvoll mit Energie umgehen und Strom zu 100% direkt aus regionalen erneuerbaren Energiequellen beziehen.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: renewable energy suppliers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names renewable energy suppliers.
Partial evidence: Its own public description names part of renewable energy suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy suppliers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 207 renewable energy suppliers based in Austria

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Renewable energy suppliers based in Austria at a glance

As of Sep 17, 2026

52.4%Verified-email coverage

15.4Average contacts per company

1-10Median size (employees)

6.8%Largest-city concentration · Wien

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

111

11-50

51-200

201-500

501-1,000

1,001-5,000

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 207 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 renewable energy suppliers, 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 “renewable energy suppliers”. 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 renewable energy suppliers), 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 renewable energy suppliers, 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, 1,671 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 17, 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 renewable energy suppliers, 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 renewable energy suppliers are there based in Austria?

RevenueBase identified 207 renewable energy suppliers 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?

Verbund, headquartered in Wien, tops this list with the largest team on record.

Which city has the most renewable energy suppliers?

Wien leads with 14 headquartered companies, followed by Vienna (11) and Graz (7).

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 1,671 verified decision-maker contacts tracked across these 207 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 17, 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.