A trial to prove an independent and steady supply of renewable energy is possible has received a positive reaction.
But the trial, which is taking place on the remote Norwegian island of Utsira, will probably not take off in many countries due to its cost.
Two wind turbines make up part of a factory which is the first of its kind producing electricity by combining wind power and hydrogen, a method which is pollution-free.
On Utsira, the wind speeds average 10 metres a second and the turbines can power the whole island. Surplus power is used to break water molecules into hydrogen and oxygen.
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