Oversupply is easy to burn up -- as long as there's robust and quick mechanisms for signalling when oversupply is going on. There's plenty of loads that can be

Oversupply is easy to burn up -- as long as there's robust and quick mechanisms for signalling when oversupply is going on. There's plenty of loads that can be quickly spun up -- transferring workload from one datacentre to another is possible, as is running refrigeration systems to generate ice (or some other phase-change material) that can be used up during peak demand. Anything remaining can be taken care of by bespoke energy storage systems, like batteries or pumped-storage.