Company lists · Data refreshed September 2026

Top 25 Residential renewable energy companies based in Austria

Name: Residential renewable energy companies based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 86 companies tracked

RevenueBase identified 86 residential renewable energy companies headquartered in Austria as of September 2026 and tracks 580 professional contacts across them, including 272 with verified work emails. Wien is the largest hub.

This list covers residential renewable energy 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 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

86Companies

580Contacts tracked

272Verified emails

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The 25 largest residential renewable energy companies based in Austria

Ranked by team size

Top 25 of 86 residential renewable energy companies 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 residential renewable energy 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	Conversio Energie Gmbh	Partial evidence	Spittal An Der Drau, AustriaHQ checked Sep 17, 2026	201-500	11 contacts →
	Partial evidence “Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Source: RevenueBase Database · checked Sep 17, 2026
11	Ökovolt Solartechnik Gmbh	Indirect evidence	Ostermiething, AustriaHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Photovolatik-Lösungen für Industrie, Gewerbe und Privat.” Source: RevenueBase Database · checked Sep 17, 2026
12	Hallosonne	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	9 contacts →
	Partial evidence “We are accelerating Europe's transition to sustainable energy by making every home a solar home.” Source: RevenueBase Database · checked Sep 17, 2026
13	Krone Sonne	Indirect evidence	Mattersburg, AustriaHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Hol dir die Sonne aufs Dach!” Source: RevenueBase Database · checked Sep 17, 2026
14	Solana Renewable Technologies Gmbh	Partial evidence	Graz, AustriaHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “SOLANA hat sich der nachhaltigen Erzeugung, Speicherung und Verteilung von erneuerbarer Energie verschrieben.” Source: RevenueBase Database · checked Sep 17, 2026
15	AEP H2 Gmbh	Partial evidence	Linz, AustriaHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Photovoltaik Contracting \| Solar-Carports \| Energiegemeinschaften” Source: RevenueBase Database · checked Sep 17, 2026
16	Secundo Photovoltaik Gmbh	Indirect evidence	Graz, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Die Secundo Photovoltaik GmbH setzt für Ihr Industrie und Gewerbeunternehmen Photovoltaikanlagen mit Komplettlösungen um.” Source: RevenueBase Database · checked Sep 17, 2026
17	Pvplus Gmbh	Partial evidence	Klosterneuburg, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Transforming the world to net zero requires clean energy from local production.” Source: RevenueBase Database · checked Sep 17, 2026
18	Ökosolar PV	Indirect evidence	Weißkirchen, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Ökosolar ist ein führender Anbieter im Bereich Photovoltaik mit einer klaren Mission: die breite Nutzung von erneuerbarer Sonnenenergie mithilfe von qualitativ hochwertigen…” Source: RevenueBase Database · checked Sep 17, 2026
19	Hsh-Installatör	Partial evidence	AustriaHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Holz die Sonne ins Haus versteht sich als Netzwerk für Erneuerbare Energieformen, thermische Solaranlagen, Photovoltaik, Scheitholz, Hackschnitzel, Pellets, Wärmepumpen…” Source: RevenueBase Database · checked Sep 17, 2026
20	Greenlemon Gmbh	Indirect evidence	Brunn Am Gebirge, AustriaHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Wir bieten schlüsselfertige Photovoltaik-Anlagen und Wärmepumpen für Gewerbebetriebe, Logistikdienstleister, Mehrparteienhäuser und Einfamilienhäuser.” Source: RevenueBase Database · checked Sep 17, 2026
21	Green Electrics Licht & Energietechnik Gmbh	Partial evidence	Gleisdorf, AustriaHQ checked Sep 17, 2026	51-200	5 contacts →
	Partial evidence “Green Electrics unterstützt Sie als Komplettanbieter zuverlässig mit innovativen Lösungen in allen energiewirtschaftlichen Belangen zum Thema Licht, Photovoltaik, Smart Home und…” Source: RevenueBase Database · checked Sep 17, 2026
22	Greesma Energy Services Gmbh	Partial evidence	Sankt Margarethen An Der Raab, AustriaHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Greesma ist Ihr professioneller Partner für nachhaltige, intelligente und wirtschaftliche Energielösungen.” Source: RevenueBase Database · checked Sep 17, 2026
23	AAE Naturstrom	Partial evidence	Kötschach-mauthen, AustriaHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Wir garantieren unseren Kunden die Belieferung mit Strom aus 100 Prozent erneuerbaren Energiequellen.” Source: RevenueBase Database · checked Sep 17, 2026
24	Fullset	Strong evidence	Bruck An Der Leitha, AustriaHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “Energy available whenever you need it - energy storage systems for residential, industrial and RES farms applications FullSet is all about: protection of your home or business…” Source: RevenueBase Database · checked Sep 17, 2026
25	Sturm Energie Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence 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: residential renewable energy companies. 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 residential renewable energy companies.
Partial evidence: Its own public description names part of residential renewable energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential renewable energy companies. 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 86 residential renewable energy companies based in Austria

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Residential renewable energy companies based in Austria at a glance

As of Sep 17, 2026

46.9%Verified-email coverage

6.7Average contacts per company

11-50Median size (employees)

8.1%Largest-city concentration · Wien

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 86 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 residential renewable energy 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 “residential renewable energy 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 residential renewable energy 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 residential renewable energy 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, 272 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 residential renewable energy 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 residential renewable energy companies are there based in Austria?

RevenueBase identified 86 residential renewable energy 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?

WEB Windenergie AG, headquartered in Waidhofen, tops this list with the largest team on record.

Which city has the most residential renewable energy companies?

Wien leads with 7 headquartered companies, followed by Linz (5) and Graz (4).

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 272 verified decision-maker contacts tracked across these 86 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.