electricity
electrical energy
[U] Uncountable
This term describes a pervasive physical force that is typically perceived as an invisible, flowing power. In modern usage, it is most frequently associated with the utility grid and the powering of electronic devices, carrying a connotation of modernity, dependency, and industrialization. Grammatically, this noun is uncountable. It cannot be pluralized to describe multiple types of power or multiple sources of energy; instead, specific quantities or types must be described using modifiers or partitive constructions such as "a form of electricity" or "a current of electricity."
Treated as a mass noun because it refers to a form of energy or a utility service that cannot be counted as individual units.