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Adequacy

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

Definition by NERC

Source: 1

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.

Danger

The previous reference 2 is no longer available.

Definition in a European Union Regulation

Source: 3 (p8)

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

Last modified: 2026-01-18

Related: reliability

← 30-Minute Reserve Service · Ambient-Adjusted Ratings →

  1. NERC (2025). Glossary of Terms Used in NERC Reliability Standards. https://www.nerc.com/pa/Stand/Glossary%20of%20Terms/Glossary_of_Terms.pdf ↩

  2. NERC (2013). Reliability Terminology. http://web.archive.org/web/20250401183750/https://www.nerc.com/aboutnerc/documents/terms%20aug13.pdf ↩

  3. (2017). Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation. http://data.europa.eu/eli/reg/2017/1485/oj ↩