Company lists · Data verified August 2026

Top 25 Energy consulting firms based in Austria

Name: Energy consulting firms based in Austria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 134 companies tracked

There are 134 energy consulting firms headquartered in Austria (RevenueBase, August 2026). RevenueBase tracks 1,138 professional contacts across them, including 447 with verified work emails and 18 with mobile numbers. Wien is the largest hub.

This list covers energy consulting firms headquartered in Austria, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

134Companies

1,138Contacts tracked

447Verified emails

18Mobile numbers

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The 25 largest energy consulting firms based in Austria

Ranked by team size

Top 25 of 134 energy consulting firms based in Austria, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	ILF Consulting Engineers In Austria	Raaba	501-1,000	265	158
2	CES Clean Energy Solutions	Vienna	11-50	47	29
3	Allplan Gmbh	St. Polten	51-200	38	23
4	EEP Energieconsulting Gmbh	Brunn Am Gebirge	11-50	25	17
5	Inercomp	Vienna	11-50	22	18
6	Enexsa Gmbh	Raaba-Grambach	11-50	22	17
7	E7 Energy Innovation & Engineering	n/a	11-50	20	17
8	Energieinstitut Vorarlberg	Dornbirn	51-200	15	7
9	Power Solution	Wien	11-50	15	7
10	SEM Energie- UND Gebäudemanagement Gmbh	n/a	11-50	15	5
11	Sattler Energie Consulting	Gmunden	11-50	15	4
12	GK Consulting Gmbh	Hagenberg Im Muhlkreis	11-50	12	9
13	TBH Ingenieur Gmbh	Graz	1,001-5,000	12	3
14	Synecotec	Absam	11-50	11	6
15	Conversio Energie Gmbh	Spittal An Der Drau	201-500	11	2
16	Lechner Partner Ingenieure Gmbh	Penzendorf	11-50	10	9
17	Eudt Energie- U. Umweltdatentreuhand Gmbh	Klagenfurt	11-50	9	7
18	Brainbows	Wien	11-50	9	5
19	E-Lite Techn. Engineering Gmbh	Linz	11-50	8	4
20	Engineering Office Mitplan	Pinsdorf	1-10	8	4
21	Ringhofer & Partner Gmbh	Schwaz	11-50	8	3
22	UVP Environmental Management And Engineering Gmbh	Wien	11-50	7	6
23	Decision Advisory Group Gmbh	Wien	1-10	7	4
24	Elkatec Consult Engineering Gmbh	Salzburg	11-50	6	4
25	Smart Engineering Gmbh	Brixlegg	11-50	6	4

Showing 25 of 134 energy consulting firms based in Austria

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Energy consulting firms based in Austria at a glance

As of Aug 28, 2026

1-10Median size (employees)

WienLargest hub · 17 HQs

18Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Energy consulting firms by metro

Metro	Companies
Energy consulting firms in Wien	17
Energy consulting firms in Vienna	13
Energy consulting firms in Graz	7
Energy consulting firms in Wels	3
Energy consulting firms in Innsbruck	3
Energy consulting firms in Dornbirn	2
Energy consulting firms in Wiener Neudorf	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “energy consulting firms”, with match quality audited by blind human judging, and headquartered in Austria.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many energy consulting firms are there based in Austria?

There are 134 energy consulting firms headquartered in Austria as of August 2026 (RevenueBase).

What is the largest company on this list?

ILF Consulting Engineers In Austria, headquartered in Raaba, tops this list with the largest team on record.

Which city has the most energy consulting firms?

Wien leads with 17 headquartered companies, followed by Vienna (13) and Graz (7).

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 447 verified decision-maker contacts tracked across these 134 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.