Company lists · Data refreshed September 2026

Top 25 Renewable energy integration consultants based in Austria

RevenueBase identified 138 renewable energy integration consultants headquartered in Austria as of September 2026 and tracks 680 professional contacts across them, including 294 with verified work emails. Wien is the largest hub.

This list covers renewable energy integration consultants 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
138Companies
680Contacts tracked
294Verified emails
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The 25 largest renewable energy integration consultants based in Austria

Ranked by team size
Top 25 of 138 renewable energy integration consultants 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 integration consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceVienna, AustriaHQ checked Sep 17, 202611-5047 contacts →

Strong evidence

“CES clean energy solutions is an enginneering consultant company and serves you as competence centre for energy efficiency, renewable energy and sustainable development.”

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceMüllendorf, AustriaHQ checked Sep 17, 202651-20044 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
3Indirect evidencePinsdorf, AustriaHQ checked Sep 17, 202651-20036 contacts →

Indirect evidence

“Over 4 decades of experience, more than installations and the constant further development of our technology are important cornerstones of the corporate strategy.”

Source: RevenueBase Database · checked Sep 17, 2026
4Partial evidenceRaaba-grambach, AustriaHQ checked Sep 17, 202611-5022 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceRied Im Innkreis, AustriaHQ checked Sep 17, 202651-20021 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
6Strong evidenceVienna, AustriaHQ checked Sep 17, 202611-5020 contacts →

Strong evidence

“e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.”

Source: RevenueBase Database · checked Sep 17, 2026
7Partial evidenceWien, AustriaHQ checked Sep 17, 202611-5016 contacts →

Partial evidence

“The Energy Transformation - Our Vision for the 21st Century!”

Source: RevenueBase Database · checked Sep 17, 2026
8Partial evidenceWien, AustriaHQ checked Sep 17, 202611-5015 contacts →

Partial evidence

“Mit unserer langjährigen Erfahrung im Energieeinkauf und unserem hohen technischen Know-How begleiten wir unsere Kunden partnerschaftlich und auf Augenhöhe in die Energiezukunft.”

Source: RevenueBase Database · checked Sep 17, 2026
9Indirect evidenceSalzburg, AustriaHQ checked Sep 17, 202611-5013 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
10Partial evidenceVienna, AustriaHQ checked Sep 17, 202651-20012 contacts →

Partial evidence

“Maßgeschneiderte erneuerbare Energielösungen aus der Biomasse”

Source: RevenueBase Database · checked Sep 17, 2026
11Partial evidenceVienna, AustriaHQ checked Sep 17, 202611-5012 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
12Partial evidenceAbsam, AustriaHQ checked Sep 17, 202611-5011 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
13Partial evidenceSpittal An Der Drau, AustriaHQ checked Sep 17, 2026201-50011 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
14Indirect evidenceMödling, AustriaHQ checked Sep 17, 202611-5010 contacts →

Indirect evidence

“10hoch4 Photovoltaik - Ihr Expertenteam für nachhaltige Photovoltaiklösungen!”

Source: RevenueBase Database · checked Sep 17, 2026
15Strong evidenceLengau, AustriaHQ checked Sep 17, 202611-5010 contacts →

Strong evidence

“We are a growing technical office for renewable energy located in Friedburg /Upper Austria.”

Source: RevenueBase Database · checked Sep 17, 2026
16Strong evidenceVienna, AustriaHQ checked Sep 17, 202611-5010 contacts →

Strong evidence

“Voltares is an independent renewable energy developer focused on utility-scale and distributed assets in emerging markets.”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceMattersburg, AustriaHQ checked Sep 17, 202611-508 contacts →

Indirect evidence

“Hol dir die Sonne aufs Dach!”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceSatteins, AustriaHQ checked Sep 17, 202611-508 contacts →

Indirect evidence

“Wir sind seit 1992 im Dienst der Sonne tätig.”

Source: RevenueBase Database · checked Sep 17, 2026
19Partial evidenceGraz, AustriaHQ checked Sep 17, 20261-107 contacts →

Partial evidence

“i2m Unternehmensentwicklung GmbH is a research-driven technology development and innovation consultancy founded in Graz, Austria in 2014.”

Source: RevenueBase Database · checked Sep 17, 2026
20Partial evidenceLandeck, AustriaHQ checked Sep 17, 202651-2007 contacts →

Partial evidence

“Innovativ und nachhaltig: Wir vereinen intelligente Energiesysteme unter Ihrem Dach.”

Source: RevenueBase Database · checked Sep 17, 2026
21Partial evidenceGraz, AustriaHQ checked Sep 17, 202651-2006 contacts →

Partial evidence

“Bei uns fließt gute Energie seit 1903.”

Source: RevenueBase Database · checked Sep 17, 2026
22Partial evidenceVienna, AustriaHQ checked Sep 17, 20261-106 contacts →

Partial evidence

“We address the most urgent challenges of data centre operators, industrial companies, municipalities and the energy sector when it comes to transforming their infrastructure at…”

Source: RevenueBase Database · checked Sep 17, 2026
23Partial evidenceKirchbichl, AustriaHQ checked Sep 17, 20261-106 contacts →

Partial evidence

“Unsere Firmenphilosophie als Energieberatungsunternehmen basiert auf dem Ziel, unseren Kunden dabei zu helfen, ihre Energieeffizienz zu verbessern und ihre Energiekosten zu…”

Source: RevenueBase Database · checked Sep 17, 2026
24Strong evidenceEngerwitzdorf, AustriaHQ checked Sep 17, 20261-106 contacts →

Strong evidence

Energy+- your partner for renewable energies.”

Source: RevenueBase Database · checked Sep 17, 2026
25Indirect evidenceWeißkirchen, AustriaHQ checked Sep 17, 202611-506 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

Showing 25 of 138 renewable energy integration consultants based in Austria

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Renewable energy integration consultants based in Austria at a glance

As of Sep 17, 2026
43.2%Verified-email coverage
4.9Average contacts per company
1-10Median size (employees)
8.7%Largest-city concentration · Wien
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
85
11-50
41
51-200
11
201-500
1

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 138 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 integration consultants, 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 integration consultants”. 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 integration consultants), 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 integration consultants, 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, 294 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 integration consultants, 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 integration consultants are there based in Austria?

RevenueBase identified 138 renewable energy integration consultants 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?

CES Clean Energy Solutions, headquartered in Vienna, tops this list with the largest team on record.

Which city has the most renewable energy integration consultants?

Wien leads with 12 headquartered companies, followed by Vienna (10) 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 294 verified decision-maker contacts tracked across these 138 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.