Determining electricity consumption from a metering device involves subtracting the previous reading from the current reading. The result provides the units of electricity consumed, typically kilowatt-hours (kWh), during the billing period. For example, if the current meter reading is 12345 kWh and the previous reading was 12245 kWh, the consumption is 100 kWh (12345 – 12245 = 100).
Accurate monitoring of electrical usage facilitates budgeting, conservation efforts, and identification of potential energy inefficiencies. Historically, manual meter reading was prevalent, but advancements in technology have introduced automated meter reading (AMR) and advanced metering infrastructure (AMI) systems, improving accuracy and efficiency. Consistent monitoring empowers informed decision-making regarding energy consumption patterns.