(physics) The increase in internal energy of a unit mass of solid when it undergoes sublimation at constant temperature and pressure

Energy that is collected from renewable resources, such as wind, water, or the sun, usually and especially as applied to a category of electrical generation.

Energy in an interaction that is not supplied by the initiator of the interaction.

Energy taken from a source that is depleted by extraction (such as fossil fuels).

A substance or phenomenon that can be used to produce mechanical work or heat or to operate chemical or physical processes (ISO 13600).

A source from which useful energy can be extracted or recovered either directly or by means of a conversion or transformation process (e.g. solid fuels, liquid fuels, solar energy, biomass, etc.)

A domestic electricity meter

Energy in a form that can radiate, generally electromagnetic energy.

The amount of energy, measured in calories, that a person uses (e.g. during a particular activity).

(physics) The conversion of one form of energy into another, or the movement of energy from one place to another.