Fascinating! The first thing I thought of was the high cost, which the article touches on at the end. I also wonder what materials would be used to support the platform… those which could be environmentally friendly yet not easily degradable while submerged in water 100% of the time. Those two characteristics tend to clash.
Apparently they use steel or concrete in most cases.
Makes sense! Every time I think of concrete, I also think of the war on sand. But we are in dire need of other energy sources. Hoping these wind farms make a dent!