Critical infrastructure (or critical national infrastructure (CNI) in the UK) is a term used by governments to describe assets that are essential for the functioning of a society and economy – the infrastructure. Most commonly associated with the term are facilities for:
- Shelter; Heating (e.g. natural gas, fuel oil, district heating);
- Agriculture, food production and distribution;
- Water supply (drinking water, waste water/sewage, stemming of surface water (e.g. dikes and sluices));
- Public health (hospitals, ambulances);
- Transportation systems (fuel supply, railway network, airports, harbours, inland shipping);
- Security services (police, military).
- Electricity generation, transmission and distribution; (e.g. natural gas, fuel oil, coal, nuclear power)
- Renewable energy, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
- Telecommunication; coordination for successful operations
- Economic sector; Goods and services and financial services (banking, clearing)