0.8% of electricity can be very critical MWs or MWhs.. rounding to 1% is 87.6 hours of electricity. could be the top 1% of prices, or grid stability, or some other grid event where having batteries able to instantly supply tens to hundreds to thousands of MW is worth a ton of $$$ and also huge increases in grid stability.
recall batteries do not generate electricity, they store it for when it is needed most.
recall batteries do not generate electricity, they store it for when it is needed most.