A higher than usual bill may be due to the seasons, holidays, and billing periods.
Seasonal Reasons:
Cold weather can increase you bill by more than 100% if you use electric heat.
Shorter days increase the need for lighting.
Heavier, winter clothing requires a longer time in an electric dryer.
Hot weather can increase you bill by more than 100% if you use air conditioning.
Holidays:
During holidays, more electricity is used for cooking, cleaning, lighting, heating and entertaining.
Indoor activities use more energy for lighting, cooking and entertaining.
Hot, humid weather can increase cooling costs by 10% or more.
Billing Periods:
A typical billing period is between 29 and 31 days. Holidays and other factors beyond our control may make a billing period up to 35 days long. An additional five days can increase a bill by 17%.