Net Internal Demand

Net Internal Demand represents the system demand that is planned for by the electric power industry's reliability authority and is equal to Internal Demand less Direct Control Load Management and Interruptible Demand.

Planned Capacity Resources

Planned Capacity Resources (or Net Capacity Resources after 2006) represents existing net generator capacity plus the addition and subtraction of capacity that either enters or leaves the region via purchases, sales, ownership, or entitlements.

Existing Net Generator Capacity: Included in this category are (1) all in service commercial operating plants/generators within a defined regional boundary that are producing some electrical output (real/reactive), (2) those that are available for service, but not normally used, and (3) any out-of-service units that could not be used for the reporting year, but are expected to be returned to service in the future. In addition, any generators that are scheduled to start operation after modification or reactivation and those plants/generators that are operational until their scheduled retirement or deactivation are also included.

Additions:
Purchases - Enter the amount of purchased capacity that will move from an outside Region or subregion to the reporting Region or subregion. Transmission must be available.
Owned Capacity/Entitlement Located Externally - Enter the amount of externally owned capacity or capacity entitlements that will move from an outside Region or subregion to the reporting Region or subregion.

Subtractions:
Sales - Enter the amount of sold capacity that will move from the reporting Region or subregion to an outside Region or subregion. Transmission must be available.
Capacity Owned by/Entitlement Held by External Entity - Enter the amount of externally owned capacity or capacity entitlements that will move from the reporting Region or subregion to an outside Region or subregion.