

We are advisors on natural and social capital.
Since 1993 our customers appreciate our holistic approach, innovative solutions, creativity and dedication. Through our global network Inogen®Alliance and our team of 120 experts we offer customised solutions for almost every sustainability challenge and are valued by our clients as a powerhouse of content.
We connect entrepreneurial mind-set with environmental and social expertise. Let us accompany you on your sustainability journey and unlock your sustainable value.
Our Mission & Values

Financial Health = what we need.
Esteem = how we behave.
Joy = the key to our energy.
Learning = is our driver.
Excellence = what we deliver.
Innovation = our goal.
Holistic Approach = denkstatt.
We create sustainable value by
… optimising environmental and social impact.
… reducing costs.
… organising legal compliance.
… improving your market position.
… managing Key Business Risks.
… strengthening your reputation.
denkstatt at a glance

Founded 1993 in Vienna
120 Experts in 6 countries and 8 offices
1 international network (Inogen)
100% commitment
Over 65% of our projects come from existing clients
Our team
Some say we are a group of highly qualified multisdiciplinary people who are dedicated to excellence. That is true. But to be honest, we would rather call oursleves people who believe that as a company you can increase your competitive advantage by taking responsibility for your Business. Furthermore, we know that together with our clients we´re able to make a difference. But please go ahead and take a look.
- Austria
- Germany
- Bulgaria
- Slovakia
- Romania
- Hungary
-
Brigitte Rataj
Office Manager
brigitte.rataj@sustainable.de -
Barbara Graf
Accounting
barbara.graf@sustainable.de -
Anna Schätzl
Junior Consultant
anna.schaetzl@sustainable.de -
Julia Urbauer
Junior Consultant
julia.urbauer@sustainable.de -
Fanny Meierhofer
Junior Consultant
fanny.meierhoffer@sustainable.de -
Timo Ernst
Consultant
timo.ernst@sustainable.de -
Dr. Adrian Dietz
Consultant
adrian.dietz@sustainable.de -
Christian Kubis
Consultant
christian.kubis@sustainable.de -
Felix Drechsler
Consultant
felix.drechsler@sustainable.de -
Dr. Albert Hans Baur
Senior Consultant
albert.bauer@sustainable.de -
Markus Götz
Senior Consultant
markus.goetz@sustainable.de -
Jan-Marten Krebs
Founder & CEO
jan.krebs@sustainable.de -
Nina Vogt
Consultant
nina.vogt@sustainable.de -
Ágnes Pápai
Assistant of Office Management
papai.a@denkstatt.hu -
Julianna Szabó
Financial manager
szabo.j@denkstatt.hu -
Barbara Donauer
Senior consultant
donauer.b@denkstatt.hu -
András Klopfer
Consultant
klopfer.a@denkstatt.hu -
Dalma Barabás
Head of Office Management
barabas.d@denkstatt.hu -
Ing. Martin Dolinský PhD.
Consultant
martin.dolinsky@denkstatt.sk -
Gustav Voitl BSc
Consultant
gustav.voitl@denkstatt.at -
DI Stefan Neumayer
Senior Consultant
stefan.neumayer@denkstatt.at -
Johannes Strobl MSc
Consultant
johannes.strobl@denkstatt.at -
DI Julia Haslinger
Senior Consultant
julia.haslinger@denkstatt.at -
Samira Romero
Group Marketing Manager
samira.romero@denkstatt.at -
Eva Maria Grosse MBA
Senior Consultant
eva.grosse@denkstatt.at -
Mag. Caroline Roiter LL.M.
Consultant Legal Compliance
caroline.roiter@denkstatt.at -
Amira Zauchner MA
Senior Consultant
amira.zauchner@denkstatt.at -
Martin Zenker MSc
Consultant
martin.zenker@denkstatt.at -
Stefan Pichler MSc
Consultant
stefan.pichler@denkstatt.at -
DI (FH) Andreas Polzer
Senior Consultant
andreas.polzer@denkstatt.at -
Adina Dragu
Junior Consultant
adina.dragu@denkstatt.ro -
DI Constantin Saleta
Senior Consultant
constantin.saleta@denkstatt.at -
Merima Crnica BSc MA
Consultant
merima.crnica@denkstatt.at -
Mag. Dr. Margit Kapfer
Manager, Decarbonisation
margit.kapfer@denkstatt.at -
DI Joachim Kircher
Senior Manager, Group Sales Director
joachim.kircher@denkstatt.at -
Boyan Rashev
Managing Partner
boyan.rashev@denkstatt.bg
+359 88 829 5768 -
Fatima Bertran De Lis, Lda.
Senior Consultant
fatima.bertrandelis@denkstatt.at -
Leopold Frey
Business Development Director
leopold.frey@denkstatt.at -
Mag. Doris Führer-Rösener
Human Resource Manager
doris.fuehrer-roesener@denkstatt.at -
Klimentina Rasheva
Managing Partner
klimentina.rasheva@denkstatt.bg
+359 88 829 5767 -
DI Willibald Kaltenbrunner, MBA
Managing Partner
willibald.kaltenbrunner@denkstatt.at -
Melinda Nyitrai-Cseh
Senior Consultant
cseh.m@denkstatt.hu -
Delia Cotarca
Assistant Manager
office@denkstatt.ro -
Csenge Domokos
Consultant
domokos.cs@denkstatt.hu -
DI Gabriela Fistis, M.Eng.
Managing Partner
gabriela.fistis@denkstatt.ro -
Zsombor Ferjancsik
Managing Director
ferjancsik.zs@denkstatt.hu -
Attila Jenei
Business Unit Leader
jenei.a@denkstatt.hu -
Mag. Dr. Margit Kapfer
Manager, Decarbonisation
margit.kapfer@denkstatt.at -
Rebeka Gyurcsányi
Consultant
gyurcsanyi.r@denkstatt.hu -
Adina Nenicioiu, M.Eng.
Service Leader
adina.nenicioiu@denkstatt.ro -
Mgr. Peter Rakovský
Senior Consultant
peter.rakovsky@denkstatt.sk -
Diana Terzieva
Office Management
diana.terzieva@denkstatt.bg
+359 87 816 7490 -
DI Sergiu Vasilie
Consultant
sergiu.vasilie@denkstatt.ro -
Florentina Radulescu
Management Systems & Legal Compliance Service Leader
florentina.radulescu@denkstatt.ro -
János Nádasi
Consultant
nadasi.j@denkstatt.hu -
DI Mag. Iva Tahy
Consultant
iva.tahy@denkstatt.sk -
Ioana Silaghi
Marketing & Communication
ioana.silaghi@denkstatt.ro -
Cristina Angheluta
Branch Manager
cristina.angheluta@denkstatt.ro -
Raluca Văduva
Sustainability Consultant
raluca.vaduva@denkstatt.ro -
Ramóna Matula
Consultant
matula.r@denkstatt.hu
-
Levente Földi
Consultant
foldi.l@denkstatt.hu -
Dóra Piszmán
Consultant
piszman.d@denkstatt.hu
-
Judit Juranics
Senior Consultant
juranics.j@denkstatt.hu -
Gábor Raska, MRICS
Property & Transactions Team Leader
raska.g@denkstatt.hu -
Eszter Sólyom
Senior Consultant & Coach
solyom.e@denkstatt.hu -
Denitza Pavlova, PhD
Senior Consultant
denitza.pavlova@denkstatt.bg
+359 88 486 4805 -
Peter Seizov
Senior Consultant
peter.seizov@denkstatt.bg
+359 88 486 5232 -
Ivan Paspaldzhiev
Consultant
ivan.paspaldzhiev@denkstatt.bg
+359 89 333 6957 -
Nevena Davidova
Marketing Professional
nevena.davidova@denkstatt.bg -
Tzveta Medarska
Consultant
tzveta.medarska@denkstatt.bg
+359 89 553 9806 -
Nikolay Mihaylov
Consultant
nikolay.mihaylov@denkstatt.bg
+359 98 890 3686 -
Yana Yordanova
Trainee
yana.yordanova@denkstatt.bg
+359 88 369 6938 -
Mag. Bernhard Kasper
Senior Consultant
bernhard.kasper@denkstatt.at -
Lea Kerschner, MSc
Senior Consultant
lea.kerschner@denkstatt.at -
Aida Szilagyi
Coop-Partner
aidaszilagyi@cnpcd.ro -
DI Joachim Kircher
Senior Manager, Group Sales Director
joachim.kircher@denkstatt.at -
DI Matthias Kolck
Consultant
matthias.kolck@denkstatt.at -
DI Florian Krautzer, MPhys
Manager, Circular Economy
florian.krautzer@denkstatt.at -
Mag. (FH) Andreas Lindinger
Consultant
andreas.lindinger@denkstatt.at -
Dr. Peter Linzner
Managing Partner
peter.linzner@denkstatt.at -
Mireille Marien
Controlling
mireille.marien@denkstatt.at -
Mag. Evelin Milleret
Senior Consultant
evelin.milleret@denkstatt.at -
Mato Petrovic
Chef de Cuisine
office@denkstatt.at
-
DI Dr. Christian Plas
Managing Partner
christian.plas@denkstatt.at -
DI Clemens Rainer, MSc
Senior Consultant
clemens.rainer@denkstatt.at -
Mag. Jutta Rasel
Senior Consultant
j.rasel@denkstatt-enertec.at -
Mag. Karl Resel
Senior Manager
karl.resel@denkstatt.at -
Mareike Schröder
Office Assistant
mareike.schroeder@denkstatt.at -
Mag. Christian Schützenhofer
Senior Consultant, Sales Director
c.schuetzenhofer@denkstatt-enertec.at -
DI Johann Schweighofer
Senior Consultant
johann.schweighofer@denkstatt.at -
Mag. Andrea Trumler-Berneck, MSc
Senior Consultant
andrea.trumler@denkstatt.at
Effective networks are all about expanding opportunities and creating fruitful partnerships
As we advise our clients on how to receive various certificates we also believe that it´s our duty to certify our offices as well. That´s why denkstatt group has sites with quality and environmental management certificates in Austria, Hungary and Bulgaria such as ISO 14001 and ISO 9001.
Inogen®Alliance – The Global Connections to Achieve Superior Local Results
Inogen Alliance is a global network of independent consulting companies that are together by choice to collaborate around the world on EHS projects for a consistent client experience. With offices located on every continent, more than 5,000 associates worldwide, and projects completed in over 280 offices in more than 150 countries, Inogen Alliance provides unparalleled coverage, consistency and 20 years of experience for a more sustainable future. Global Thinking. Local Delivery.
(The INOGEN ALLIANCE logo and INOGEN are trademarks of Inogen Environmental Alliance, Inc.)
denkstatt & enertec
Demands on supply and safety change even faster by the growing complexity of modern society, economy and jurisdiction. Efficient and sustainable energy-supply, -use and -distribution can only be practicable, if all the different requirements and future strategic necessities are incorporated. This is denkstatt & enertec GmbH’s competence: We seek to position you and your company ready to take on future challenges and ambiguities – and therefore present solutions in accordance to your everyday working process. Our services include site energy supply concepts, energy-audits (acc. to EU and federal lwas), analysis and evaluation of efficiency measures and optimisations. We offer state-of-the-art refrigeration engineering, Carbon Footprint assessment, “Green Building” conformity, monitoring and implementation of management systems (e.g. ISO 50001).
Enertec
ENERTEC is an engineering consultancy with a focus on thermal power engineering, refrigeration technology, HVACR and energy media supply. It was founded in Graz in 1991. For its clients in the fields of industry, commerce and services ENERTEC always aims to find cost-effective solutions and to support their implementation.
More partners…












denkstatt Group has office sites in 6 countries: Austria, Germany, Bulgaria, Hungary, Slovakia and Romania.
Get in touch to make a difference.
Austria
denkstatt GmbH Hietzinger Hauptstraße 28 1130 Vienna, Austria Telephone: +43 1 786 89 00 Email: office@denkstatt.at
Austria
denkstatt & enertec GmbH Hietzinger Hauptstraße 11 1130 Vienna, Austria Telephone: +43 1 890 28 25 Email: office@denkstatt-enertec.at www.denkstatt-enertec.at
Bulgaria
denkstatt Bulgaria OOD 115 Arsenalski blvd., fl. 5, 1421, Sofia, Bulgaria Telephone: +359 2 470 7508 Email: office@denkstatt.bg
Hungary
denkstatt Hungary Kft. Seregély utca 6 1037 Budapest, Hungary Telephone: + 36 1 239 1206 Email: denkstatt@denkstatt.hu
Slovakia
denkstatt Slovensko s.r.o. BC Kerametal, Jašĺkova 2 821 03 Bratislava, Slovakia Telephone: +421 2 482 91 46 Email: office@denkstatt.sk
Romania
denkstatt Romania S.R.L. Str. Madrid Nr. 22 300391 Timisoara, Romania Telephone: +40 256 43 43 97 Email: office@denkstatt.ro
Rumänien
denkstatt Romania S.R.L.
Str. Parintele Galeriu 6C, 020762
Bucuresti, Rumänien
Telefon: +40 728 467 186
Email: office@denkstatt.ro
Germany
sustainable AG
Corneliusstraße. 10, 80469 Munich, Germany Telephone: +49 (89) 20205645 Email: info@sustainable.de