@Giff Thanks for the INFO.Your are correct, DEMAND CHARGES are based on kWh.Use 3kw in half an hour in DEMAND times you will be charged for 6kWh in demand rates for your DEMAND time rating for the number of days in your rating period. Now you please explain to me, why, yesterday, I consumed 5.115kw of power for the 24 hour period.For the period 17:30 till 18:00 I consumed 0.297kW which calculates to .594kWh according to DEMAND RATES but from 17:00 to 18:00 I only consumed (0.154 +0.297) = .451k ...