Company lists · Data refreshed September 2026

Top 25 Industrial solar contractors based in Austria

Name: Industrial solar contractors based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 147 companies tracked

RevenueBase identified 147 industrial solar contractors headquartered in Austria as of September 2026 and tracks 702 professional contacts across them, including 290 with verified work emails. Wien is the largest hub.

This list covers industrial solar contractors 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

147Companies

702Contacts tracked

290Verified emails

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The 25 largest industrial solar contractors based in Austria

Ranked by team size

Top 25 of 147 industrial solar contractors 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 industrial solar contractors: 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	Swimsol Gmbh	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	58 contacts →
	Partial 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
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	Partial evidence	Vienna, AustriaHQ checked Sep 17, 2026	51-200	39 contacts →
	Partial 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	Solid Solar Energy Systems Gmbh	Partial evidence	Graz, AustriaHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “SOLID brings together extraordinary knowledge, experience in market application and R&D in areas of planning and operation of large-scale solar thermal energy systems and solar…” Source: RevenueBase Database · checked Sep 17, 2026
5	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
6	10hoch4 Energiesysteme	Partial evidence	Theresienfeld, AustriaHQ checked Sep 17, 2026	51-200	20 contacts →
	Partial evidence “Projektentwicklung, Beratung, Planung, Umsetzung von PV-Projekten für Gewerbe und Industrie” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	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
9	KPV Solar Gmbh	Partial evidence	Krumpendorf, AustriaHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “KPV Solar is the leading Austrian Solar company designing and constructing utility size PV power plants.” Source: RevenueBase Database · checked Sep 17, 2026
10	Krannich Solar Austria	Partial evidence	Wels, AustriaHQ checked Sep 17, 2026	501-1,000	13 contacts →
	Partial 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
11	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
12	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
13	Conversio Energie Gmbh	Indirect evidence	Spittal An Der Drau, AustriaHQ checked Sep 17, 2026	201-500	11 contacts →
	Indirect 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
14	Exenberger Elektro-Technik	Indirect evidence	Kitzbühel, AustriaHQ checked Sep 17, 2026	51-200	11 contacts →
	Indirect evidence “Mit Innovation, Teamgeist und höchster Qualität sind wir der perfekte Partner für Elektroinstallationen, Photovoltaik-Anlagen & Energiespeicherlösungen, Sicherheitssysteme, IT &…” Source: RevenueBase Database · checked Sep 17, 2026
15	Ökovolt Solartechnik Gmbh	Partial evidence	Ostermiething, AustriaHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Photovolatik-Lösungen für Industrie, Gewerbe und Privat.” Source: RevenueBase Database · checked Sep 17, 2026
16	Dafi Gmbh	Indirect evidence	Eben Im Pongau, AustriaHQ checked Sep 17, 2026	51-200	10 contacts →
	Indirect 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
17	Kärnten Solar	Partial evidence	Klagenfurt Am Wörthersee, AustriaHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Kärnten Solar ist ein Komplettanbieter im Bereich Photovoltaik, Notstrom, Batteriespeicher, Klein- & Großanlagen, Elektroladesäulen, Bürgerkraftwerke & PV-Contracting.” Source: RevenueBase Database · checked Sep 17, 2026
18	Baywa R.E. Solar Distribution At	Indirect evidence	Poggersdorf, AustriaHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Ihr österreichischer Experte für Solarenergie Wir, die BayWa r.e.” Source: RevenueBase Database · checked Sep 17, 2026
19	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
20	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
21	Secundo Photovoltaik Gmbh	Partial evidence	Graz, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Die Secundo Photovoltaik GmbH setzt für Ihr Industrie und Gewerbeunternehmen Photovoltaikanlagen mit Komplettlösungen um.” Source: RevenueBase Database · checked Sep 17, 2026
22	Energy Solutions Gmbh	Indirect evidence	Engerwitzdorf, AustriaHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Energy+- your partner for renewable energies.” Source: RevenueBase Database · checked Sep 17, 2026
23	Pvplus Gmbh	Indirect evidence	Klosterneuburg, AustriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Transforming the world to net zero requires clean energy from local production.” Source: RevenueBase Database · checked Sep 17, 2026
24	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
25	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

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: industrial solar contractors. 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 industrial solar contractors.
Partial evidence: Its own public description names part of industrial solar contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial solar contractors. 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 147 industrial solar contractors based in Austria

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Industrial solar contractors based in Austria at a glance

As of Sep 17, 2026

41.3%Verified-email coverage

4.8Average contacts per company

1-10Median size (employees)

5.4%Largest-city concentration · Wien

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 147 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 industrial solar contractors, 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 “industrial solar contractors”. 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 industrial solar contractors), 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 industrial solar contractors, 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, 290 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 industrial solar contractors, 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 industrial solar contractors are there based in Austria?

RevenueBase identified 147 industrial solar contractors 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?

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

Which city has the most industrial solar contractors?

Wien leads with 8 headquartered companies, followed by Linz (7) and Vienna (5).

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 290 verified decision-maker contacts tracked across these 147 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.