Sorry, was at a conference recently where someone pointed out something I hadn't realised about tidal - NZ is large enough that tides from location to location are out of sync, meaning tidal power can be providing power throughout the day, if it is widely spread out.

For the US, both east and west coast are long enough that tides are similarly spread out, so a turbine in Seattle will be generating when one in California will be slack, and vice versa.

So yeah, chalk up another one for renewable baseline power.