There is peak load and baseload. The peak load factor is the amount of electricity used by a business across a short period when maximum demand is reached. A load factor calculation is used to measure peak demand, which can be calculated by dividing the number of kilowatt-hours (kWh) consumed over a period by the number of hours in that time frame. The result is used to allocate the class.
Baseload is different; this refers to the minimum amount of electricity used across a 24-hour period, also called continuous load. Baseload is the continuous supply of electricity required by the grid, while peak load is the energy required at peak times in the working day. Therefore, you need to measure peak demand rather than baseload to determine which class you belong to.