Nashville, Tenn. – Nashville Electric Service is preparing customers for higher bills this winter due to a colder December and January. The month of January was 15 percent colder than normal, and December 2009 temperatures were recorded as four percent colder than the previous year. Customers should expect to see an increase in their kilowatt-hour usage compared to a year ago. Where are my energy dollars going? What are some no-cost or low-cost steps I can take to make my home more energy-efficient? NES offers a free online tool called PowerWise that will help you find out quickly and easily. After you enter your NES account number and complete a short home profile, the PowerWise Bill Analyzer will create a personalized energy analysis for your home. Start learning how you can save with PowerWise.