Several years ago, we went to the Big Island of Hawaii. On a trek to a secluded beach, we came across a wind farm with a couple dozen of Mitsubishi windmills, all of which were rusting and not working. This made me ask the locals how they generate electricity on the islands. They told me fuel oil is shipped in by tanker to power the generating plant.
As an island, thousands of miles from anywhere, transport cost for fuel have to be enormous. Being in the middle of the ocean with steady trade winds, plus a tropical temperate climate should make wind viable. Because of it’s small size, there are concentrated populations with minimal transmission cost. So if wind power is not economical in Hawaii, it can’t be economical anywhere.
Green Sand Beach, southernmost point?