The more cool air you lose, the harder your air conditioning unit works and the higher your electricity bill will be. Install blinds, hang curtains or get storm windows made to keep cool air from seeping out. Even mesh screens, on the outside of your home, will help deflect solar radiation. You might even consider replacing old windows that leak cold air and let in heat.

Electric bills for customers in the Houston area can more than double in summer months, mainly because air conditioning. Not coincidentally, electric rates also rise in the summer months because of this increase in demand. The most dramatic rate increases occur in month-to-month plans, but electric rates do increase across the board for all fixed-rate contract lengths.
Aside from times of natural disasters and large-scale accidents, electricity prices tend to be steadily dictated by electricity demand. Typically, the price of electricity rises when demand rises. In turn, the lower demand is, the cheaper electricity rates become. This pattern is due to the fact that increased demand requires increased energy production. When extra energy is demanded, utilities are forced to use alternative sources of energy production that may cost more to operate. For example, when electricity demand reaches a high point in Texas, coal plants are used alongside the typical natural gas plants. These coal plants are costlier and less effective than natural gas plants, but are necessary to meet high electricity demand levels.[1]
Electricity cannot be stored as easily as gas, it is produced at the exact moment of demand. All of the factors of supply and demand will therefore have an immediate impact on the price of electricity on the spot market. In addition to production costs, electricity prices are set by supply and demand.[120] However, some fundamental drivers are the most likely to be considered.
You can organize and shop by pricing at YOUR individual usage level, which allows you to shop and compare energy plans based on the rates you’ll actually see appear on your bill, inclusive of taxes and hidden fees. You won’t be misled by the “teaser rates” tied with higher usage levels that many homes never experience, as their usage level never reaches that pricing tier.