Contingency (power grid) means the unexpected failure or outage of a system component, such as a generating unit, transmission line, circuit breaker, switch or electrical element. 
Civil contingency refers to risks to civilian health, safety, and property from emergencies as defined in the Civil Contingencies Act (2004) .
Contingency is a potential occurrence that is likely but not certain to happen. 
The unexpected failure or outage of a system component, such as a generator, transmission line, circuit breaker, switch or other electrical element. 
Possible future event, condition or eventuality. 
- ↑ AESO Glossary
- ↑ 2.0 2.1 Cabinet Office, Lexicon of UK Civil Protection Terminology, Version 2.1.1, February 2013
- ↑ ICDRM/GWU Emergency Management Glossary of Terms. The Institute for Crisis, Disaster, and Risk Management (ICDRM) at the George Washington University, Washington DC.
- ↑ Glossary of Terms Used in NERC Reliability Standards - Updated January 25, 2017
- ↑ ISO 22300:2012(en) Societal security — Terminology