The cable box I used to have, used enough power to get noticeably hot. It would do this whether "on" or "off" (no measurable difference in power drain).
Climate plays a big factor, probably the largest factor in assessing utility costs for different areas of the country.
There are many additional complexities as well. In general homes in the east and Midwest (subject to brutal winters) are generally better insulated (some would say better constructed) than homes in the Pacific Northwest.
Thus, even though electricity is generally cheaper in the PNW, the over-all annual bills may be the same because of increased losses, lack of basements, running heating ducts in un-insulated crawl-spaces etc.
This is just one example. Cities like Phoenix and certain areas of Florida have extreme climates and may result in huge A/C bills during the summer.
One simple appliance table for the entire USA can be an over-simplification of the problem.
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