They really need to just let retail rates float along with the wholesale rates. PG&E
already has devices that can show you exactly what you're paying at any given time. They could probably do a combination of fixed rates and floating rates by announcing rates 24 hours in advance, and while they won't exactly reflect wholesale rates, they'll probably be close (and update the devices to show the rates for the next 24 hours). That way, people's smart thermostats could come up with a schedule for the next 24 hours and would know when to precool and when to shut off the HVAC to try to maintain a comfortable environment for the lowest cost. This will automatically solve the issues with supply in the evenings because people will have a financial incentive to conserve during those times, and if it's integrated into smart thermostats and happens automatically, you won't have to do anything except set it and forget it. This would be very different from what was happening in Texas with Griddy, where people were exposed to wholesale rates but just weren't told anything about what they were until the bill came at the end of the month.