# Electrical Power Engineering Formula Cheat Sheet

The Electrical Power formulas sheet provides different electrical formulas that are useful for the Power Electrical Engineers.

### Load Factor

Load factor is defined as the ratio between average load and maximum demand. It is also defined as the ratio between generated units and the maximum demand.
Example # 1: A hydroelectric power station has a maximum demand of 40 MW and an average demand of 10 MW. Find the load factor at the station.
Solution: Load factor = Average load / Maximum demand = 10 MW / 40 MW = 25%.

### Average Load

Average load or average demand is the average of loads or generated units for the specific period of time.
Daily average load: It is defined as units generated in a day / 24 hours
Monthly average load: It is defined as units generated in a month / number of hours in a month
Yearly average load: It is defined as units generated in a year / number of hours in year

### Diversity factor

Diversity factor is defined as sum of individual maximum demands to the maximum demand of the whole power station.