Business Green: US-based wind turbine developer Principle Power and Portugal’s Energias de Portugal (EDP) have agreed to team up on a project to develop a deep-water offshore wind farm off the coast of Portugal using floating wind turbines. The development will use Principle Power’s WindFloat technology, which sees turbines placed on floating platforms rather than attached to the sea bed. The company argues that the floating turbines are far more cost effective to install in deep water than …