Facts and figures

  • Full name: High Pressure Hydrogen All Electrochemical Decentralized RefUeling Station
  • Acronym: PHAEDRUS
  • Start date: 1/11/2012
  • End date: 30/9/2015
  • Funding EU: 3.5 M€
  • Total budget: 6.3 M€


The objective of the project is to develop and validate a new concept for 70 MPa hydrogen refueling retail stations enabling self sustained infrastructure roll-out for early vehicle deployment volumes, showing the applicability of the electrochemical hydrogen compression technology in combination with a PEM electrolyser, storage units and dispensing system.

  • The use of electrochemical hydrogen compression technology is expected to provide a step change in both the efficiency and cost of ownership of an integrated hydrogen refueling system.
  • The applicability will be demonstrated in a fuelling system producing 5 kg hydrogen per day, while a design is made for a fuelling system capable of producing 200 kg hydrogen per day. This is typical for the need of fleet owners and early markets.
  • Another objective is to analyze and validate the safety aspects, efficiency and economic viability of the system. Important factors influencing cost and efficiency are the absolute and relative sizes of the individual building blocks.
  • The business case for the final refueling system will be done by a reliable assessment of the cost and energy efficiency of the H2 compression and refueling cost as a function of the production size (in size and in (production) number of stations) in comparison to systems based on mechanical compression.

The project is scheduled for 3 years and can be regarded as phase one of a two-step development. In the first phase technology will be developed, a, and validated on a 5 kg/day scale. A follow-up to this project will continue to demonstrate a scalable 200 kg/day Hydrogen Refuelling System. We anticipate a user profile with multiple back-to-back fillings (5 kg) within one hour and the peak period lasting 3 hours per day.





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This project has received funding from the European Union’s Seventh Framework Programme | Fuel Cells and Hydrogen Joint Undertaking for research, technological development and demonstration under grant agreement no 302418 



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