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
  • Bulgaria
  • Slovakia
  • Romania
  • Hungary
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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 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.



denkstatt GmbH Hietzinger Hauptstraße 28 1130 Vienna, Austria Telephone: +43 1 786 89 00 Email: office@denkstatt.at



denkstatt & enertec GmbH Hietzinger Hauptstraße 11 1130 Vienna, Austria Telephone: +43 1 890 28 25 Email: office@denkstatt-enertec.at www.denkstatt-enertec.at



denkstatt Bulgaria OOD 115 Arsenalski blvd., fl. 5, 1421, Sofia, Bulgaria Telephone: +359 2 470 7508 Email: office@denkstatt.bg



denkstatt Hungary Kft. Seregély utca 6 1037 Budapest, Hungary Telephone: + 36 1 239 1206 Email: denkstatt@denkstatt.hu



denkstatt Slovensko s.r.o. BC Kerametal, Jašĺkova 2 821 03 Bratislava, Slovakia Telephone: +421 2 482 91 46 Email: office@denkstatt.sk



denkstatt Romania S.R.L. Str. Madrid Nr. 22 300391 Timisoara, Romania Telephone: +40 256 43 43 97 Email: office@denkstatt.ro



sustainable AG 
Corneliusstraße. 10, 80469 Munich, Germany Telephone: +49 (89) 20205645 Email: info@sustainable.de