About Us

Underground Energy Storage Technologies is a centre of excellence for underground storage facilities and aims at accelerating the implementation of hydrogen and carbon storage operations. It consolidates 95 years of combined corporate experience in underground storage gathered by the HOT Energy Group, RED Drilling & Services and Chemieanlagenbau Chemnitz (CAC) in collaboration with storage operators, leading universities and research organisations.

OUR COMBINED CORPORATE EXPERIENCE

Planned

>20

Billion Cubic Metres of Storage Capacity

Supervised

>10

Storage Surface Facilities Developments – from Concept to Operation

Planned & Drilled

>70

Energy Storage Wells

Completed

>56000

Metres Storage Reservoir

Built

>500

Industrial Plants

Commissioned

>30

Storage and Production Stations

Provide

>95

Years of Combined Corporate Experience

Our Key Team

Dr Diethard Kratzer / © CORPORATE & INDUSTRIAL, PORTRAIT AND LANDSCAPE PRINTS. AUSTRIA

Dr Diethard Kratzer

Management

Diethard Kratzer combines 30+ years of experience in consulting and R&D management. He is founder and CEO of HOT Engineering and heading the HOT Energy Group.

Dr Leonhard Ganzer / © CORPORATE & INDUSTRIAL, PORTRAIT AND LANDSCAPE PRINTS. AUSTRIA

Dr Leonhard Ganzer

Research & Advisory

Leonhard Ganzer is head of the Institute of Subsurface Energy Systems at Technical University Clausthal in Germany focusing on underground hydrogen storage, CO2 injection, carbon capture and storage (CCS) or usage (CCU). He is experienced in leading roles of R&D projects and technology development for underground storage of hydrogen or CO2. He also acts as expert for the Austrian mining authority for underground gas storage projects.

Dr Andreas Harrer / © CORPORATE & INDUSTRIAL, PORTRAIT AND LANDSCAPE PRINTS. AUSTRIA

Dr Andreas Harrer

Subsurface

Andreas Harrer is Head of Consulting Services for the HOT Energy Group. With almost 20 years’ in-depth experience in reservoir engineering and simulation, Andreas has conducted and supervised the modelling and planning of many underground gas storage facilities.

Mr Leopold Hauser

Leopold Hauser

Facilities

Leopold Hauser is a mechanical engineer with almost 30 years of experience in the development, execution and operation of Underground Gas Storages Surface Facilities – from concept development up to operation. As Engineering Manager of RAG Austria, one of the leading European storage operators, Leopold was serving the development of more than 10 gas storage surface facilities.

Mr Heimo Heinzle / © Steve Haider

DI Heimo Heinzle

Drilling & Well Engineering

Heimo Heinzle is Technical Director at RED Drilling & Services. He is a petroleum engineer with more than 20 years of experience and has held a variety of positions as drilling engineer and engineering manager in Austria and abroad.

Joerg Engelmann

DI Joerg Engelmann

Project Management & Surface

Joerg Engelmann is CEO at CAC with more than 30 years of experience in the management of Large Industrial Projects including the implementation of surface facilities for natural gas storages. Since 2004 he has been leading the CAC Group of Companies.

Stephan Canzler

Stephan Canzler

Process & Surface

Stephan Canzler is Senior Process Engineer and acting as Product Manager and Lead Engineer for projects of natural gas surface facilities and Compressor Stations. Since more than 30 years he has been responsible for the development of a customized process technology and the later commissioning of the respective facility.

ABOUT THE HOT ENERGY GROUP (HOT)

The HOT Energy Group (HOT) is a leading subsurface engineering provider for production, injection and storage operations. Its vast subsurface experience stems from more than 30 years of characterising, modelling and simulating complex oil, gas & condensate reservoirs, underground gas storage (UGS) facilities and aquifers. HOT’s global footprint is supported by HOT offices in Austria, Germany, Libya and the UAE and a network of alliance and representative offices.
WE DELIVER EXCELLENCE

“While our core business originated in the upstream oil and gas industry, our innovations, technologies and solutions are scalable, expandable and portable across other energy systems and industries, and have made us a trusted advisor and partner for energy transition and innovative and sustainable energy solutions and subsurface energy systems.”

Dr Diethard Kratzer, Founder & CEO

ABOUT RED DRILLING & SERVICES (RED)

“Being a former operator, RED understands the needs of its clients and combines planning and operations experience of more than 1.200 projects with best in class performance while achieving highest quality and safety standards.”

di HEIMO HEINZLE, MANAGING DIRECTOR

RED Drilling & Services GmbH (former RAG Energy Drilling GmbH) was established in 2014 as a 100% subsidiary of a long-established Austrian exploration, production and gas storage company with over 80 years of experience. The core business is the planning, implementation and maintenance of oil and gas exploration and production wells, gas storage and geothermal wells, as well as the plug and abandonment of old wells. Besides subsurface and surface engineering services RED is also operating its own drilling and workover rigs.

ABOUT Chemieanlagenbau Chemnitz (CAC)

Chemieanlagenbau Chemnitz GmbH (CAC) is a renowned plant engineering company with more than 25 years’ experience in the planning, implementation and commissioning of gas plants and also surface facilities for natural gas underground storages by providing the whole range of engineering services from its own sources.
With around 400 employees, 280 at the company headquarters in Chemnitz, CAC has built more than 500 industrial plants worldwide.

“By considering our long term experiences and technological competencies, CAC is combining the flexibility of a medium-sized privately owned enterprise with project related skills and tools of a large Industrial Plant Manufacturer.”

DI Joerg Engelmann, CEO & Shareholder

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