During periods of high renewable output, what negative outcome does energy storage help prevent?

Answer

Curtailment (wasting) of clean energy generation

When excess electricity is available, storage units charge, which prevents system operators from having to curtail (waste) clean energy generation or excessively ramp down conventional power plants.

During periods of high renewable output, what negative outcome does energy storage help prevent?
storageenergyenergy storagegridgrid stability