What criteria is used to determine if an active dispatch event is either 1, 2, or 3 hours? What do the utilities expect will be most common? The Average?

The criteria is typically based on the ISO NE three-day forecasts but there are other variables that need to be considered. Typically, the EDCs expect events to have a duration of 2-3 hours. This allows the best probability of impacting the targeted ISO hourly peak