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24h / 365days

We offer support for our customers

Mon - Fri 8:00am - 5:00pm (GMT +1)

Get in touch

Cybersteel Inc.
376-293 City Road, Suite 600
San Francisco, CA 94102

Have any questions?
+44 1234 567 890

Drop us a line

About us

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Phone +49 (0) 53 21 6 87 - 0

Company & experience

Under the name and the business segment “Green H2 Systems”, the FEST Group provides design, planning, and production for the turnkey installation as well as the maintenance of these plants in technological collaboration with partner companies.

The FEST Group has been established for many years as an experienced partner for process automation in the manufacturing industries. In addition to expertise and experience, innovation is a constant driving force for the company and its employees.

Based on the know-how and experience from these companies, complete energy solutions are offered and realized, which range from supplying power by utilizing renewable energy sources, to H2 production, transport, and storage, as well as commercial refueling systems for vehicles and industrial applications.


FEST Group-
Your Partner in Automation, IT & Energy

For our global customers, we offer comprehensive, individual solutions for their production processes, which are realized on various scales. We currently have 7 locations worldwide in Germany, Austria, Russia and India and a total of around 300 employees, thus allowing us to provide support for major projects and industrial customers all over the world with our technological know-how and 50 years of experience.

Industrial customers from all sectors

  • Hydrogen & Energy
  • Metallurgy
  • Process-Oriented Industries
  • Construction Materials
  • Transport & Logistics
  • Chemical
  • Food

Part of the FEST Group, Green H2 Systems is a specialist for hydrogen projects of all sizes. We provide consulting and engineering services and deliver solutions independent of manufacturers and industries – regionally and internationally.

In addition to our work for customers, we actively drive innovation in the energy transition. Numerous collaborations with international partners, associations and universities enable us to respond flexibly and highly efficiently to future requirements. We are not just following a trend – we are shaping it.


Green H2 Systems
Harzburger Strasse 14
38642 Goslar

T +49 (0) 53 21 6 87 - 0

  • Contracting & Engineering
  • Energy Systems & Management
  • PEM Electrolyzers from 1 MW – 100 MW
  • Lifetime Services & Consulting
  • Technological Development
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