Building from Triple Threat…I agree. On top of that, a smart grid is needed. B/c wind/tidal/solar don’t produce a steady stream of power generation (sometimes the wind doesn’t blow/sometimes it’s night). A smart grid should be able to remedy that. My understanding is that a smart grid harnesses the energy from the source that is producing it, when it’s producing it. I’d be interested to know if any wind turbines have underwater turbines to make up for the deficit in power generation when there’s no wind. I’d also like to know more about the impact of tidal power on the immediate environment (could whales be injured? etc…).