Power metering involves measuring how much electricity is used over time at residential and commercial properties. Traditional electromechanical meters have dials that rotate proportional to energy consumption but get read manually by a meter reader visiting periodically. However, with smart metering technology, digital meters record precise power usage data in intervals as short as 15 minutes and transmit readings remotely via radio signals. This enables utilities and customers to get a more granular view of electricity demand patterns and better manage consumption.

The digital Power Metering measure voltage, current and power factor to compute kilowatt-hours (kWh) used. Modern smart meters can also measure other parameters like power quality, detect outages and power restoration. Since they do not require physical access, readings can be retrieved automatically through a fixed network infrastructure installed by utilities. This provides utilities the ability to bill customers based on their actual usage rather than estimating bills between meter readings.

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