Resource adequacy

Resource adequacy (RA, also supply adequacy) in the field of electric power is the ability of the electric grid to satisfy the end-user power demand at any time (typically an issue at the peak demand). RA is a component of the electrical grid reliability.^[1] For example, sufficient unused generation capacity shall be available to the electrical grid at any time to accommodate major equipment failures (e.g., a disconnection of a nuclear power unit or a high-voltage power line) and drops in variable renewable energy sources (e.g, wind dying down). The adequacy standard should satisfy the chosen reliability index, typically the loss of load expectation (LOLE) of 1 day in 10 years (so called "1-in-10").^[1]