Dear supporters of sustainable propulsion technologies,

It is my great pleasure to warmly invite you to the 6th Hydrogen Engine Conference,
taking place on Thursday, September 18, 2025, in Karlsruhe.

As in previous years, the hydrogen engine and its associated challenges - from hydrogen production and infrastructure to refueling technologies - will remain the core focus of our event. However, starting this year, we are broadening our perspective: the scope of the conference has been expanded to include hydrogen derivatives. For the first time, ReFuels - sustainable hydrocarbons derived from hydrogen - will also be featured as part of the program.

We are currently finalizing the agenda and will publish it on the website shortly. More than ever, the interaction between technical details and political as well as societal developments is driving our efforts.
As always, you can look forward to highly relevant insights at the intersection of mobility, energy, and society.

This year, we have chosen the Schlossgartenhalle in Ettlingen as our venue. I would be delighted to welcome you there once again, to engage in discussions about current and future challenges. Take advantage of this opportunity to exchange ideas across disciplines and expand your professional horizons.

Kind regards,
Thomas Koch

“The hydrogen engine enables CO₂-free transport in the heavy-duty sector. Although small amounts of nitrogen oxides (NOₓ) can be produced at high combustion temperatures, modern exhaust aftertreatment systems – such as SCR catalysts – effectively reduce these to a minimum. In combination with green hydrogen, the hydrogen engine thus offers an almost emission-free propulsion solution. It can therefore make an important contribution to a sustainable and clean transformation of the transport sector – the focus of this forward-looking conference.”