IN https://blog.gridstatus.io/caiso-beats-the-heat/ , there is a very interesting quote.
"The Electric Reliability Council of Texas (ERCOT) has also been lauded for its growth in storage, but when put into perspective of load, the gap remains quite large. Comparing all-time peak load and peak storage discharge (non-coincident), ERCOT's battery fleet would have met less than 5% of demand, while CAISO's battery fleet would have met about 16%, more than triple the value in Texas."
Absolute numbers are not the right metric when one of the states doesn't care about efficiency and decides to generate more and more electricity. Then absolute number are huge but percentages of renewal are very low.