How much do you pay per KWH? Texas is deregulated, so we have wide range of options... currently I'm paying 8.8 cents per... bill in hot July for 2400 sq foot house is $229. We're not very frugal on watching our usage. We both like it cool in the house and also have a doggie door which probably costs dearly. We with Oncor a few years ago and were paying 12 cents per.. summertime bills were outrageous then.