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A5 MW Pfeffenhausen hydrogen production plant – green hydrogen from Bavaria Climate-neutral hydrogen can significantly reduce CO2 emissions, especially in industry and transport, where energy efficiency and the direct use of electricity from renewable sources are not sufficient. H2 technology and applications have developed rapidly in recent years. The challenge now is to transfer this technology to industrial use.

One of four technology and user centres for “green” hydrogen in Germany is planned for Pfeffenhausen, Bavaria. A 5 MW hydrogen production plant is being built near the centre, which will also be able to supply hydrogen to the hydrogen centre in the future. As general contractor, Kraftanlagen Energies & Services was awarded the contract for the planning, construction and commissioning of this plant.

Hy2B Hydrogen Generation Plant_Pfeffenhausen
Gruener Wasserstoff Bayern

Scope of delivery:

  • Electrolyser (5 MW)
  • Low and high pressure compressors (200 bar & 450 bar)
  • Trailer filing station for three trailers
  • Electrical supply for the whole plant
  • Plant control and safety systems
  • Auxiliary systems (water treatment plant, nitrogen system, cooling system)

“We are delighted to have been selected as the general contractor for this Bavarian project of the future and to be able to contribute our hydrogen expertise to the power-to-gas plant in Pfeffenhausen. Together with our customer Hy2B, we are setting a milestone for a sustainable energy transition with this project. It is important that large-scale hydrogen projects are now being launched, because hydrogen is the medium that can be produced and stored using renewable energies and because it is important to implement the first pilot projects here.””

Alfons WeberCEO von Kraftanlagen Energies & Services

The key component of the plant – the alkaline electrolyser – is being supplied by the Norwegian manufacturer NEL.


At the end of August this year, an important construction phase was successfully completed with the installation of the compressors.

We have documented this milestone in a video.

Once operational, the electrolysis plant will produce an average of 1,200 kilograms of green hydrogen per day. This is then compressed to up to 450 bar and filled into transport trailers at the filling station. These trailers will then distribute the hydrogen to bus and truck refuelling stations in the Munich and Ebersberg districts, supplying the regional bus services of Münchner Verkehrs- und Tarifverbund GmbH with green fuel for ten hydrogen fuel cell buses. The remaining green hydrogen will be used to supply other customers in the mobility and energy sectors.

Gruener Wasserstoff Bayern

The electricity needed to produce the hydrogen will initially come from a twelve megawatt ground-mounted photovoltaic system in the immediate vicinity of the plant. There are also plans to build two wind turbines near the hydrogen centre.

Key milestones:

September 2022:

Symbolic ground-breaking ceremony and start of construction of the hydrogen production plant in the presence of Prime Minister Markus Söder and Minister of State Hubert Aiwanger.

Juni 2023:

Small topping-out ceremony and delivery of the first of four transport trailers.

August 2023:

Installation of low and high pressure compressors
(200 bar & 450 bar).

September 2023:

Opening of Bavaria’s largest hydrogen refuelling station in Hofolding near Munich. From March 2024, the Hofolding filling station, together with other filling stations, will be the first customer for green hydrogen from the Pfeffenhausen hydrogen production plant.