Unique in that typically, people have to pay a premium to increase reliability — like when a family shells out for a home backup generator, or when society collectively pays for power plants to sit around doing nothing most of the year just in case supply gets tight for a few extreme hours.
In Texas and California, though, the new storage doesn’t sit around waiting for heat waves: It plays in the markets everyday, displacing more costly and inefficient fossil-fueled plants from various grid operations.