Home Hydrogen ZeroAvia hydrogen fuel-cell Piper demo flights connecting Orkney Islands ZeroAvia hydrogen fuel-cell Piper demo flights connecting Orkney Islands 20 Sep 2019 | HydrogenNews UK backs hydrogen fuel-cell Piper demo flight in Orkney New UK transport secretary Grant Shapps is encouraging innovation to create an “electric revolution” which will transform aviation in the same manner as the automotive industry.