[3-LEG] Grid reliability chain, one balancing authority (?entity=us-ercot): leading EIA-930 day-ahead demand forecast ap

[3-LEG] Grid reliability chain, one balancing authority (?entity=us-ercot): leading EIA-930 day-ahead demand forecast approaching recent peak, about one day of lead -> current current demand against capacity tightness -> realized reserve and interchange response (confirmation gate). A sequential chain, not one reading - confidence = how many legs are lit, in order. Sources: US EIA-930. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.