More sophisticated monitors can track usage over time in watt-hours and kilowatt-hours (kWh). Some even allow you to input your electricity cost per kWh to calculate how much money the appliance costs to operate over a given period, like a day or a month....
The first is theenergy efficiencythat describes the Tesla’s ability to travel per amount of energy, that is the kilometer per kilowatt hour or km / kWh; and the second number isemissions efficiencyin grams of carbon dioxide emitted per kWh or g CO2 / kWh. ...
If the load profiles of the customers of the retailor are different from the system load profile, the average cost per KWh of the retailor may be different from the monthly average electricity price due to the significant price difference between peak and off-peak hours. Therefore, if a ...