Aside from price increases, there are a number of reasons your bill could be higher than you expect. By far the most powerful influence on electric usage is the season.
Electricity use rises in the winter.
This is not surprising given that we spend more time indoors and the demand on heating, water heating and lighting is greatest during the winter months. If you have an electric furnace, filters should be cleaned regularly. Home needs weatherizing. Ceilings, floors and walls need more insulation. You need weatherstripping or caulking around doors, windows, pipes and cracks.