Demand
The amount of energy that is needed on the grid.
Available capacity* 5-minute average
Energy available to the ISO, including current demand and unloaded capacity
*Available capacity varies due to outages, congestion, and emergencies.
Current demand
The amount of energy currently needed on the grid.
Today’s peak
Maximum amount of energy needed in the day.
Forecasted demand
Energy expected to be needed during the day, based on historical system loads and temperatures. The day-ahead forecast is determined 24 hours before the energy is needed. The hour-ahead forecast is determined an hour before the energy is needed.
Forecasted peak 5-minute average
Maximum amount of energy expected during the day.
Tomorrow’s forecasted peak
Maximum amount of energy expected tomorrow.