We are a little higher than tail chaser. 2300 sf ranch, 76 deg daytime, 75 sleeping, 78 when away. 3 people, and I'm home during the summer a lot more (teacher). $130 for June, $200 July, on track for $210 in August. We also have gas heat/water, so we are under $40 in the winter. $60-80/mo spring/fall.
Almost all CFL bulbs, gradually converting the heavy use rooms to LED. We plan to update the single pane glass windows over the next year.