Wiktionary
n. A device that measures the consumption of electricity, normally in terms of watt-hours
Wikipedia
An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device.
Electric utilities use electric meters installed at customers' premises to measure electric energy delivered to their customers for billing purposes. They are typically calibrated in billing units, the most common one being the kilowatt hour [kWh]. They are usually read once each billing period.
When energy savings during certain periods are desired, some meters may measure demand, the maximum use of power in some interval. "Time of day" metering allows electric rates to be changed during a day, to record usage during peak high-cost periods and off-peak, lower-cost, periods. Also, in some areas meters have relays for demand response load shedding during peak load periods.
Usage examples of "electricity meter".
The electricity meter needed feeding, but having nothing to feed it with, the Queen settled for darkness.
Jimmy bumped his head on the electricity meter and elbowed the handle of a vacuum cleaner, but didn't feel any pain.
They could now clearly see the electricity meter and the vacuum cleaner.
He looked at Luis with his baggy eyes as if Luis were the electricity meter and he had come to read it.
Crandal closed his eyes and saw the electricity meter spinning, spinning, and he sank wearily into the chairbot.
Were it not for the survival of that bedroom lamp, the reasonable inference would have been that the family had been obliged to fall back on its reserves by robbing the electricity meter.