Depends on the utility/state. Some have different rates depending on time of day. Where I live does not. We pay a straight per kwh rate regardless of when used and how “spikey” our pattern is. The total per month is segregated into tiers, so the per kwh rate is incrementally higher as your total consumption climbs.
This is a good description of electric rate tariff which is becoming more prevalent in USA. It depends on what rate tariffs are approved by the regulator.
