I really liked the look of these structures in the Cromarty Firth, and I liked them even more when I learned that they are for wind turbines in the North Sea. They are being welded onto the deck of the ship which will tow them out to position. The centre of the ship can be submerged and the turbines floated off and anchored to the sea bed with concrete (produced in uk, instead of steel made in China). Only the yellow part will be above water.
Scotland is doing well with renewable energy production. See here.