The machine – the make of which has yet to be specified – is expected to have the capacity to produce 20GWh, enough for 1,000 local households near its installation site on the island of Smøla.

"Statkraft is one of Europe's leading companies for renewable energy, and is a major player in offshore wind," says energy minister Tord Lien.

"In Norway it is well placed to test technologies that could lead to improvements in this type of production.

"This