Electricity (electric power)

Electricity is energy transferred by moving or changing electric charges and supplied through power systems to operate devices, provide lighting, and produce heat.

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Electric current: The rate at which electric charge flows through a conductor or other medium. Current carries energy from the supply through conductors to electrical devices.
Electric charge: A fundamental property of matter that causes electric forces and interactions. Moving charge underlies current, while charge separation establishes voltage.
Electric generator: A machine that converts mechanical energy into electrical energy through electromagnetic induction. Generators supply electricity at power stations and in backup systems.
Electrification: The adoption of electricity to replace other energy sources in technologies, buildings, or economies. Electric power enables shifts from direct fuel use to electric devices and processes.
Primary energy: Energy found in natural resources before conversion into usable forms. Electricity is usually a converted energy carrier, not a primary resource.
Voltage: The electric potential difference between two points, measured in volts. Voltage provides the potential that drives current through a circuit.
Electrical energy: Energy associated with electric charges, electric fields, and their movement or configuration. Electricity supplies energy that devices convert into light, heat, motion, or computation.
Electric motor: A machine that converts electrical energy into mechanical motion. Motors turn electrical supply into motion in appliances, pumps, and vehicles.
Power outage: A temporary loss of electrical supply to a location or network. Outages reveal how strongly homes and essential services depend on continuous supply.
Fossil fuel: Coal, oil, or natural gas formed from ancient organic matter and used as an energy source. Burning fossil fuels can generate electricity, but fuels can also provide heat directly.