The US state of Maine will this month finalise a possible location for a large-scale floating wind project in federal seas off its coast – just as a ban on turbines in state waters is signed into law.

Governor Janet Mills’ administration will identify a potential site 32-64km (20-40 miles) from Maine’s coast for a proposed up-to-144MW floating wind research array and later this summer will apply for federal regulatory approval.

The Governor’s Energy Office (GEO), in consultation with other agencies, is now reviewing data collected to inform the siting in the Gulf of Maine of up to 12 turbines that will use the VolturnUS concept – a multi-patented, modular concrete semisubmersible design developed by the University of Maine’s Composites Center and