Blazej Toranski, a spokesman for BOT Gornictwo and Energetyka, said building a wind-powered plant at sea is more expensive but at the same time such plants are very efficient.

Toranski said a power plant at sea produces three times more electricity than a land-based, wind-powered plant because sea winds are stronger.

The Polish Maritime Economy Ministry has voiced its support for the idea, but Baltic Sea sailors and fishermen wondered how the electromagnetic field would affect the sea’s natural habitat.