LOL, that howl will be me, howling all the way to the bank
There are people who are working to tap the largest unspoiled energy source on the planet, the tides and currents of the oceans. If they can figure out an economic way to do that, it'll change the world. Until that happens nothing can touch nuclear energy for efficiency or cost on a large scale.
Yes, I said nuclear energy. I can hear the uniformed knee-jerk tree huggers running for the hills already.
Nothing we currently have can compete with nuclear energy when cost, supply, and pollution is factored in. It makes the most sense.
But what about the children? LOL