What is the primary function of grid-scale energy storage regarding energy supply and demand mismatch?

Answer

Acting as a buffer to smooth out inherent mismatches

The primary function of grid-scale energy storage is to act as a buffer, smoothing out the inherent mismatch between when power is cheapest or most available and when consumers actually need it.

What is the primary function of grid-scale energy storage regarding energy supply and demand mismatch?
storageenergyenergy storagegridgrid stability