I have a geothermal heating and cooling stystem. As part of my job I chart my kw usage for both electricity and geothermal (heating and cooling) for my 2700 square foot house and 1200 square foot basement.

During the past 5 years I have averaged about 5,500 kw per year or 458 per month or 15 per day.

My geothermal system has averaged 17,000 kw per year or 1,400 per month or 47 per day.

My total gas and electric bills have averaged $1300- $1,500 per year.   We keep our house at 71 degegrees in the winter and 73 degrees in the summer.   Not bad for a 1968 Pulte home with only an R5 in the walls and a cement basement.

Of course I have made improvements to the home (low e windows, 10" blowm cellulose in attic, 2" foam boards in band joist, caulk, weather stripping etc) that brought it up to a 5 star energy star house with an 86.5 HERS rating.