# Smart energy meters-Riken Instrumentation Limited An electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residence, business, or an electrically powered device. Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour [kWh].

The meter constant represents the number of pulses will generated per hour nothing but after n number of pulses the meter reading is incremented by one.
kWh meter is the electric meter that measures the amount of electrical energy in kWh that was consumed in the house. The kWh meter has a counter display that counts units of kilowatt-hour (kWh). The energy consumption is calculated by calculating the difference of the counter’s reading in the specified period.

Cost of electricity bill

The cost of electricity bill is calculated by multiplying the number of kWh that were consumed by the cost of 1kWh.
For example, the electricity bill’s cost for consumption of 900kWh per month with cost of 10 cents for 1kWh is
900kWh x 10¢ = 9000¢ = 90\$.
How many kilowatt-hour does a house use?

Energy consumption of a house is about the range of 150kWh..1500kWh per month or 5kWh..50kWh per day.
It depends on the weather that affects the heating or air conditioning requirements and the number of people that live in the house.

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