Hydrogen is an energy carrier with great potential for clean, efficient power instationary, portable and transport applications. It can also improve energy efficiency in transportand contribute strongly to mitigating climate change - especially when produced by renewable primary energy sources.

Potential role of hydrogen as energy carrier to contribute to low carbon EU energy and transport system is recognized by EU policy-makers and described in A Roadmap for moving to a competitive low carbon economy in 2050, Energy roadmap 2050, SET-Plan, Transport White paper, Proposal for directive Alternative Fuels infrastructure.