Day-ahead market (DAM)

Most wholesale power trades a day early. In ERCOT's voluntary day-ahead market, buyers and generators commit to prices for each hour of the next day, with results published around 12:30 CT. The real-time market then settles what each hour actually cost. The difference between the two prices is the market's forecast error in dollars, and the WattMarkets DART page tracks it hour by hour.

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