Raldo TXU is ripping you off, I live in a 2 bedroom condo (1200sq ft) in Dallas with my girlfriend and we have electric everything (HVAC, stove, etc) and huge roof-level sun windows which don't retain heat - despite this our bill has never been over $100 and last month it was less than $40. We keep it the same in the summer as you but slightly cooler in the winter (we're both from Minnesota). I have no idea how you were paying so much this summer even with the gas heating unit...
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