Islands are better off with underwater turbines. It's more consistent and water is more dense, so more energy.
Also, currently...
Half a penny for “near firm” solar and trillions in renewable opportunities
NextEra, the United States’ largest renewable company sees 3.5 TW renewable capacity installations through 2050 worth $2 trillion. These figures could double if we were to fully decarbonize the economy.
pv-magazine-usa.com