Company lists · Data refreshed September 2026

Top 25 Renewable energy optimization software based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 105 companies tracked

RevenueBase identified 105 renewable energy optimization software headquartered in Austria as of September 2026 and tracks 668 professional contacts across them, including 268 with verified work emails and 15 with mobile numbers. Wien is the largest hub.

This list covers renewable energy optimization software 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

105Companies

668Contacts tracked

268Verified emails

15Mobile numbers

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The 25 largest renewable energy optimization software based in Austria

Ranked by team size

Top 25 of 105 renewable energy optimization software 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 optimization software: 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	Energy3000 Solar GmbhPartial evidence	Müllendorf, AustriaHQ checked Sep 5, 2026	51-200	44
	“Nomen est omen – solar konzentriert sich auf nachhaltige Energiesysteme und -lösungen für das dritte Jahrtausend.” Source: company website · checked Sep 5, 2026
2	CybergridIndirect evidence	Vienna, AustriaHQ checked Sep 5, 2026	51-200	44
	“CyberGrid is specialist in the development of innovative flexibility management solutions for a secure and clean grid.” Source: company website · checked Sep 5, 2026
3	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
4	M-Tec Energy For FutureIndirect evidence	Pinsdorf, AustriaHQ checked Sep 5, 2026	51-200	36
	“Over 4 decades of experience, more than installations and the constant further development of our technology are important cornerstones of the corporate strategy.” Source: company website · checked Sep 5, 2026
5	My-PvIndirect evidence	Neuzeug, AustriaHQ checked Sep 5, 2026	51-200	26
	“We make more out of photovoltaics than just electricity.” Source: company website · checked Sep 5, 2026
6	Sonnenkraft GmbhPartial evidence	Sankt Veit An Der Glan, AustriaHQ checked Sep 5, 2026	201-500	24
	“As a leading specialist in solar energy since 1993, based in St.” Source: company website · checked Sep 5, 2026
7	Enexsa GmbhStrong evidence	Raaba-grambach, AustriaHQ checked Sep 5, 2026	11-50	22
	“ENEXSA (formerly VTU Energy) is a team of highly qualified engineers with long-term experience in the power industry who offer consulting services and software solutions for the…” Source: company website · checked Sep 5, 2026
8	nista.ioStrong evidence	Wien, AustriaHQ checked Sep 5, 2026	11-50	18
	“As a spin-off of the TU Vienna, we develop software that regularly transforms energy data into actionable tasks.” Source: company website · checked Sep 5, 2026
9	Selina Photovoltaic GmbhIndirect evidence	Vienna, AustriaHQ checked Sep 5, 2026	11-50	15
	“We are a professional full-service implementation partner specializing in the planning, project development, construction and operation of large-scale photovoltaic systems for…” Source: company website · checked Sep 5, 2026
10	Eco-Tec.At Photovoltaics GmbhIndirect evidence	Irdning-donnersbachtal, AustriaHQ checked Sep 5, 2026	51-200	12
	“Überzeugt von dem enormen Potential der Sonne, ist es unser Antrieb, dieses für jeden einfach und zuverlässig nutzbar zu machen.” Source: company website · checked Sep 5, 2026
11	PWE System GmbhIndirect evidence	Wels, AustriaHQ checked Sep 5, 2026	1-10	11
	“PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.” Source: company website · checked Sep 5, 2026
12	Conversio Energie GmbhPartial evidence	Spittal An Der Drau, AustriaHQ checked Sep 5, 2026	201-500	11
	“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.” Source: company website · checked Sep 5, 2026
13	Dafi GmbhPartial evidence	Eben Im Pongau, AustriaHQ checked Sep 5, 2026	51-200	10
	“Als Full-Service-Photovoltaikanbieter mit integriertem Energiemanagement sind wir stolz darauf, unseren Kunden maßgeschneiderte PV-Lösungen anzubieten, die exakt auf ihre…” Source: company website · checked Sep 5, 2026
14	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
15	EnergiewerkstattStrong evidence	Lengau, AustriaHQ checked Sep 5, 2026	11-50	10
	“We are a growing technical office for renewable energy located in Friedburg /Upper Austria.” Source: company website · checked Sep 5, 2026
16	Sunlumo Technology GmbhPartial evidence	Perg, AustriaHQ checked Sep 5, 2026	11-50	9
	“Sunlumo is new - a green technology company with a focus on solar energy.” Source: company website · checked Sep 5, 2026
17	I2m GmbhIndirect evidence	Graz, AustriaHQ checked Sep 5, 2026	1-10	7
	“i2m Unternehmensentwicklung GmbH is a research-driven technology development and innovation consultancy founded in Graz, Austria in 2014.” Source: company website · checked Sep 5, 2026
18	EnergiedigitalPartial evidence	Graz, AustriaHQ checked Sep 5, 2026	1-10	7
	“Energiedigital plant, errichtet und optimiert dezentrale Energielösungen für Gebäude und Quartiere.” Source: company website · checked Sep 5, 2026
19	Secundo Photovoltaik GmbhIndirect evidence	Graz, AustriaHQ checked Sep 5, 2026	11-50	6
	“Die Secundo Photovoltaik GmbH setzt für Ihr Industrie und Gewerbeunternehmen Photovoltaikanlagen mit Komplettlösungen um.” Source: company website · checked Sep 5, 2026
20	Energy Solutions GmbhStrong evidence	Engerwitzdorf, AustriaHQ checked Sep 5, 2026	1-10	6
	“Energy+- your partner for renewable energies.” Source: company website · checked Sep 5, 2026
21	Ökosolar PVIndirect evidence	Weißkirchen, AustriaHQ checked Sep 5, 2026	11-50	6
	“Ökosolar ist ein führender Anbieter im Bereich Photovoltaik mit einer klaren Mission: die breite Nutzung von erneuerbarer Sonnenenergie mithilfe von qualitativ hochwertigen…” Source: company website · checked Sep 5, 2026
22	ETU Hottgenroth SoftwarePartial evidence	Holzhausen, AustriaHQ checked Sep 5, 2026	11-50	5
	“Wir freuen uns, Ihnen unser Unternehmen vorstellen zu dürfen: Die ETU GmbH steht für Softwareentwicklung, Vertrieb und Schulung von Softwareprodukten.” Source: company website · checked Sep 5, 2026
23	Nikko Engineering GmbhIndirect evidence	Baden, AustriaHQ checked Sep 5, 2026	1-10	5
	“Nikko Engineering ist ein Ingenieurbüro für Elektrotechnik und ausschließlich im Bereich Photovoltaik tätig.” Source: company website · checked Sep 5, 2026
24	FF Photovoltaik GmbhIndirect evidence	Oberwart, AustriaHQ checked Sep 5, 2026	51-200	5
	Source: company website · checked Sep 5, 2026
25	Trianel Energieprojekte Austria GmbhPartial evidence	Wien, AustriaHQ checked Sep 5, 2026	1-10	5
	“Trianel Energieprojekte Austria GmbH deckt mit ihren Kompetenzen jede Phase einer Projektrealisierung ab.” Source: company website · checked Sep 5, 2026

Showing 25 of 105 renewable energy optimization software based in Austria

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Renewable energy optimization software based in Austria at a glance

As of Sep 5, 2026

1-10Median size (employees)

WienLargest hub · 11 HQs

15Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Verified emails by last verification

0–30

253

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 optimization software, 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 optimization software”. 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 optimization software, 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, 268 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 optimization software are there based in Austria?

RevenueBase identified 105 renewable energy optimization software 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?

Energy3000 Solar Gmbh, headquartered in Mullendorf, tops this list with the largest team on record.

Which city has the most renewable energy optimization software?

Wien leads with 11 headquartered companies, followed by Vienna (9) and Graz (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 268 verified decision-maker contacts tracked across these 105 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.