Adequacy

The ability to supply the demand and energy requirements of the end-use customers.

Last Updated:  January 18, 2026

Version:  1.0.1

Generated:  January 19, 2026

Definition by NERC

Source:

The ability of the electric system to supply the aggregate electrical demand and energy requirements of the end-use customers at all times, taking into account scheduled and reasonably expected unscheduled outages of system elements.

The previous reference is no longer available.

Definition in a European Union Regulation

Source: p8

‘adequacy’ means the ability of in-feeds into an area to meet the load in that area;