I’m powered by the James Bay project and live about three hours from Niagara Falls, so I’m a believer in hydro.

Niagara Falls, to the unaware, uses pumped hydro during night and off-season to account for power dips for when tourists want to look at the waterfall.

For the chemical batteries section, that’s an endorsement: Australia built a system that can handle grid-scale charge and discharge! At this point it’s a matter of buying more batteries and sticking them in, a resourcing problem rather than an engineering one.