Total generation in the ERCOT region in May was down about 5% year-on-year. But a decline in nuclear output left a bit more market share to fossil fuels (up from 66.5% last May to 67.0% this May). And gas took more of that from coal. Last year the split was 2/3 gas, 1/3 coal, and this year gas edged up to 68.7% against coal's 31.3%.
33.7 vs 32.0
In BCFE terms, gas demand was 4.76 BCFED, out of a total fossil fuel demand of 6.9 BCFED. That's above the 2019 poly line, and about 21% above last year's line: