From YouTube replies
@Aleksandrs Naumovs
I forgot to mention PPAs. The utilities are entering into power purchase agreements with solar and wind contractors for per kWh rates that are lower than conventional thermal power plants. These often include short term 4 to 8 hour storage. Any new generation has to compete against renewables plus storage for these PPAs. And the costs of renewables plus storage is still going down so the competition is getting tougher.
Here is an article with some good links. One thing they make clear is that the world has *not* got the time to wait multiple years for new technologies to be approved. And it’s going to cost a lot to get the ball rolling.