There's a lot of rather convincing literature out there on the potential of tidal power. The energies are enormous and the technology is straightforward. It's not like photovoltaics where we're waiting on improvements in cost. It's simple turbines.

Tidal power ends up attracting a lot of conspiracy theories. Why are we bombarded with news and policies about wind and solar when on paper huge tidal generation capacity is probably viable right now? There could be something there, I don't know.