It’s a peak demand charge. They look at the highest usage hour from 4-7pm every weekday. The highest number adds a charge billed at $19/kw demand. https://www.

It’s a peak demand charge. They look at the highest usage hour from 4-7pm every weekday. The highest number adds a charge billed at $19/kw demand. https://www.aps.com/en/Residential/Service-Plans/Compare-Service-Plans/Time-of-Use-4pm-7pm-Weekdays-with-Demand-Charge https://www.aps.com/en/Residential/Service-Plans/Compare-Ser...