Order your Free CFL (compact florescent light bulb) bulbs now if you are a Duke Energy customer (Florida, Indiana, Kentucky, Ohio, North Carolina, South Carolina). You’ll need to verify that you are a customer with either your phone number or your account number and the last 4 digits of your Federal Tax ID or Social Security Number. I have replaced almost all of the bulbs in my house with CFLs. They are great!
From their site: CFL bulbs save energy and money on your electric bill. They last longer and are much more efficient than their incandescent counterparts.