what is demand billing electricity
How Demand Billing Works. There are two energy-related charges in demand billing. One is for the amount of electricity used during the entire billing period-this is the energy charge (measured in kwhrs). Relating to the previous example, this would be-equivalent to the gallons of water used.kWhrs / (# of days in billing period x 24 hrs x billable demand [kw]) x 100 = % LF]. For example, if the customer used electricity at the maximum rate for each and every 30-minute period in the billing period, the resulting load factor would be 100%.