It's correct that we always look for low-cost electricity, particularly if you are residing in Illinois. The price of electricity is escalating constantly. They already stated that the cost of electricity will be higher in 2015, but those price increases will be a little lower compared to 2014.
The easiest approach to preserve energy is to make of natural lighting in daytime instead of using your artificial lighting. You can your artificial lighting at night, but make sure that you allow the all-natural light enter your house during the day.