Company lists · Data refreshed September 2026

Top 25 Renewable energy installers based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 150 companies tracked

RevenueBase identified 150 renewable energy installers headquartered in Austria as of September 2026 and tracks 652 professional contacts across them, including 243 with verified work emails. Wien is the largest hub.

This list covers renewable energy installers 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

150Companies

652Contacts tracked

243Verified emails

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The 25 largest renewable energy installers based in Austria

Ranked by team size

Top 25 of 150 renewable energy installers 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 installers: 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	LSG Group Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 17, 2026	201-500	47 contacts →
	Indirect evidence “LSG GROUP based in Austria, was originally founded as Leopold Jordan GmbH in Vienna in 1997, renamed 2010 to LJG Building Solutions GmbH and finally 2012 restructured to the LSG…” Source: RevenueBase Database · checked Sep 17, 2026
2	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
3	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
4	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
5	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
6	PVI ALT	Indirect evidence	Klagenfurt, AustriaHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “UNSERE KERNKOMPETENZEN: • Technisch optimierte Photovoltaik Anlagenplanung • Anlagenplanung für höchste Erträge (z.B.” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	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
9	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
10	PWE System Gmbh	Indirect evidence	Wels, AustriaHQ checked Sep 17, 2026	1-10	11 contacts →
	Indirect evidence “PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.” Source: RevenueBase Database · checked Sep 17, 2026
11	Synecotec	Partial evidence	Absam, AustriaHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “We are an Energy Service Company (ESCO) from Tyrol that has set itself the task of realising clean and sustainable solutions for the energy use of companies and private households.” Source: RevenueBase Database · checked Sep 17, 2026
12	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
13	Dafi Gmbh	Partial evidence	Eben Im Pongau, AustriaHQ checked Sep 17, 2026	51-200	10 contacts →
	Partial evidence “Als Full-Service-Photovoltaikanbieter mit integriertem Energiemanagement sind wir stolz darauf, unseren Kunden maßgeschneiderte PV-Lösungen anzubieten, die exakt auf ihre…” Source: RevenueBase Database · checked Sep 17, 2026
14	Energiepark Bruck Leitha	Partial evidence	Gemeinde Bruck An Der Leitha, AustriaHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Wir gestalten die Energiezukunft!” Source: RevenueBase Database · checked Sep 17, 2026
15	Doma VKW	Indirect evidence	Satteins, AustriaHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Wir sind seit 1992 im Dienst der Sonne tätig.” Source: RevenueBase Database · checked Sep 17, 2026
16	GEG Elektro UND Gebäudetechnik Gmbh	Indirect evidence	Gmunden, AustriaHQ checked Sep 17, 2026	51-200	7 contacts →
	Indirect evidence “Wir beraten, planen, installieren / montieren, reparieren, servicieren u.” Source: RevenueBase Database · checked Sep 17, 2026
17	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
18	Energy Solutions Gmbh	Strong evidence	Engerwitzdorf, AustriaHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “Energy+- your partner for renewable energies.” Source: RevenueBase Database · checked Sep 17, 2026
19	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
20	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
21	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
22	Nikko Engineering Gmbh	Indirect evidence	Baden, AustriaHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “Nikko Engineering ist ein Ingenieurbüro für Elektrotechnik und ausschließlich im Bereich Photovoltaik tätig.” Source: RevenueBase Database · checked Sep 17, 2026
23	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
24	Solah Gmbh	Partial evidence	Mattersburg, AustriaHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Wir haben es uns seit 2011 zur Aufgabe gemacht, das Potential der Sonne als Energiequelle zu nutzen.” Source: RevenueBase Database · checked Sep 17, 2026
25	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

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 installers. 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 installers.
Partial evidence: Its own public description names part of renewable energy installers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy installers. 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 150 renewable energy installers based in Austria

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Renewable energy installers based in Austria at a glance

As of Sep 17, 2026

37.3%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

6.0%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 150 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 installers, 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 installers”. 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 installers), 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 installers, 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, 243 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 installers, 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 installers are there based in Austria?

RevenueBase identified 150 renewable energy installers 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?

LSG Group Gmbh, headquartered in Vienna, tops this list with the largest team on record.

Which city has the most renewable energy installers?

Wien leads with 9 headquartered companies, followed by Linz (6) and Vienna (6).

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 243 verified decision-maker contacts tracked across these 150 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.