Company lists · Data refreshed September 2026

Top 25 Decarbonization consulting firms based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 80 companies tracked

RevenueBase identified 80 decarbonization consulting firms headquartered in Austria as of September 2026 and tracks 463 professional contacts across them, including 203 with verified work emails. Wien is the largest hub.

This list covers decarbonization consulting firms 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 28, 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 28, 2026 86% judged on-target in blind review

80Companies

463Contacts tracked

203Verified emails

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The 25 largest decarbonization consulting firms based in Austria

Ranked by team size

Top 25 of 80 decarbonization consulting firms based in Austria, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decarbonization consulting firms: 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	Kommunalkredit Public Consulting Gmbh	Partial evidence	Wien, AustriaHQ checked Sep 28, 2026	51-200	104 contacts →
	Partial evidence “Kommunalkredit Public Consulting pursues the goal of making long-term positive contributions to the environment, the economy, and society by managing funding programs and by…” Source: RevenueBase Database · checked Sep 28, 2026
2	E7 Energy Innovation & Engineering	Partial evidence	Vienna, AustriaHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “e7 is a private research and consulting company specialized in the energy efficiency and the renewable energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
3	Verbund Green Hydrogen Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “We are decarbonisation partners: VERBUND is driving the energy transition forwards with green hydrogen and setting course for a green future.” Source: RevenueBase Database · checked Sep 28, 2026
4	RM Umweltkonsulenten ZT Gmbh	Indirect evidence	Frohnleiten, AustriaHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Abfallverwertung, Schadstoffreduktion, Emissionsvorgaben … – Betriebe werden heute mit einer Vielzahl an umweltgesetzlichen Verpflichtungen konfrontiert.” Source: RevenueBase Database · checked Sep 28, 2026
5	Pulswerk Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “pulswerk ist das Beratungsunternehmen des Österreichischen Ökologie-Instituts.” Source: RevenueBase Database · checked Sep 28, 2026
6	One2zero	Indirect evidence	Salzburg, AustriaHQ checked Sep 28, 2026	11-50	13 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 28, 2026
7	Myssion Consulting Gmbh	Indirect evidence	Wien, AustriaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Jeder Vision liegt ein WOFÜR zugrunde.” Source: RevenueBase Database · checked Sep 28, 2026
8	TBH Ingenieur Gmbh	Indirect evidence	Graz, AustriaHQ checked Sep 28, 2026	1,001-5,000	12 contacts →
	Indirect evidence “Die TBH Ingenieur GmbH ist IHR kompetenter Partner für ganzheitliche Lösungen, die Ihr Gebäude und energietechnischen Anlagen energieeffizienter und nachhaltiger machen.” Source: RevenueBase Database · checked Sep 28, 2026
9	Sustainability	Indirect evidence	Wien, AustriaHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “At the beginning of any engagement with the topic of sustainability is the corporate carbon footprint, which can be used to determine which investments are necessary and whether…” Source: RevenueBase Database · checked Sep 28, 2026
10	Energy Changes	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “Energy Changes Projektentwicklung GmbH is a climate and sustainability advisory and project developer based in Vienna, Austria.” Source: RevenueBase Database · checked Sep 28, 2026
11	Brainbows	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “Wir sind ein Beratungsunternehmen für Nachhaltigkeit, Energie & Klimaschutz mit Sitz in Wien.” Source: RevenueBase Database · checked Sep 28, 2026
12	Susform	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Mit susform wird Nachhaltigkeit auf den Punkt gebracht.” Source: RevenueBase Database · checked Sep 28, 2026
13	Ecofides Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Nachhaltigkeit liegt in der DNA von ECOFIDES.” Source: RevenueBase Database · checked Sep 28, 2026
14	Pöchhacker Innovation Consulting Gmbh	Partial evidence	Linz, AustriaHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “Pöchhacker Innovation Consulting GmbH (P-IC) ist ein Beratungsunternehmen, das auf wirtschafts, forschungs- und innovationspolitische Fragestellungen, die Green Transition der…” Source: RevenueBase Database · checked Sep 28, 2026
15	The Climate Desk	Partial evidence	Bregenz, AustriaHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “The Climate Desk TCD Consulting GmbH is a management consultancy with offices in Bregenz, Austria, and Munich, Germany.” Source: RevenueBase Database · checked Sep 28, 2026
16	Unfold Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “We support organizations to find their potential to unfold sustainability in their everyday business.” Source: RevenueBase Database · checked Sep 28, 2026
17	Engineering Office Mitplan	Partial evidence	Pinsdorf, AustriaHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “We are an Austrian consulting company focusing on planning and implementing future-oriented sustainable energy solutions for responsible people and companies.” Source: RevenueBase Database · checked Sep 28, 2026
18	Payer & Partner ESG Consulting	Indirect evidence	Wartberg Ob Der Aist, AustriaHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Strategische Nachhaltigkeitsberatung für Unternehmen mit Weitblick.” Source: RevenueBase Database · checked Sep 28, 2026
19	Decision Advisory Group Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect 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 28, 2026
20	PTM Energy	Indirect evidence	Kirchbichl, AustriaHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect 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 28, 2026
21	Ibbl Engineering Consulting	Indirect evidence	Wien, AustriaHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “IBBL Ingenieurbüro Brkic und Labenbacher Independent engineering consultancy focused on cement and lime plants.” Source: RevenueBase Database · checked Sep 28, 2026
22	Daxner & Merl Gmbh	Partial evidence	Wien, AustriaHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Daxner & Merl stands for profound sustainability consulting services focused on environmental management.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sima Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Klimaschutz im Hochbau braucht Aktionen.” Source: RevenueBase Database · checked Sep 28, 2026
24	HWC	Partial evidence	Linz, AustriaHQ checked Sep 28, 2026	11-50	5 contacts →
	Partial evidence “Horst Wiesinger Consulting (HWC) is an independent, flexible and professional company with expertise along the entire process route of Steel making and Steel processing.” Source: RevenueBase Database · checked Sep 28, 2026
25	D&e Consulting	Indirect evidence	Vienna, AustriaHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “A Short History Originally established in 2011 as a joint venture between denkstatt GmbH and ENERTEC - Naftz & Partner GmbH & Co KG, the company known as denkstatt & enertec (d&e…” Source: RevenueBase Database · checked Sep 28, 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: decarbonization consulting firms. 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 decarbonization consulting firms.
Partial evidence: Its own public description names part of decarbonization consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decarbonization consulting firms. 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 80 decarbonization consulting firms based in Austria

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Decarbonization consulting firms based in Austria at a glance

As of Sep 28, 2026

43.8%Verified-email coverage

5.8Average contacts per company

1-10Median size (employees)

22.5%Largest-city concentration · Wien

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 80 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 decarbonization consulting firms, 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 “decarbonization consulting firms”. 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 decarbonization consulting firms), 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 decarbonization consulting firms, 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, 203 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 28, 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 decarbonization consulting firms, 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 decarbonization consulting firms are there based in Austria?

RevenueBase identified 80 decarbonization consulting firms 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?

Kommunalkredit Public Consulting Gmbh, headquartered in Wien, tops this list with the largest team on record.

Which city has the most decarbonization consulting firms?

Wien leads with 18 headquartered companies, followed by Vienna (8) and Linz (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 203 verified decision-maker contacts tracked across these 80 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 28, 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.