Electricity is described as metered electric power supplied by a central utility company to a residence via power lines.

Since there are no volumetric measures of electricity, as there are with the fossil fuels, electricity is measured as the amount of power used at any instant (demand expressed in watts or kilowatts) or as power used over a given time (consumption expressed in kilowatthours).

See also:
"Electricity" is in the NAICS Code "334515"
  (Instrument Manufacturing for Measuring and Testing Electricity and Electrical SignalsIndicating instruments, electric, manufacturing)