Claim: The amount of energy that the average US household uses each day is equivalent to the amount of energy that about 13 adult humans use in a day.

Here is my input for this calculation:

  1. According to the EIA, "the average annual electricity consumption for a U.S. residential utility customer was 10,972 kilowatthours (kWh), an average of about 914 kWh per month."
  2. The average human calorie consumption per day is 2000 kilocalories.
  3. 1 kwh ~= 860.05 kcal

Using these inputs, we see that the average kWh consumption per household per day is about 30.5 kWh which is about 26203 kcal, and dividing by 2000 kcal gives us roughly 13. There are variations we can make, such as modifying the amount of calories used -- men in general will use more, and both men and women will use more while doing some sort of activity, especially if it is stenuous. A fit, highly active male can consume upwards of 3000 kcal which would make the number of humans about 9 to reach the equivalent energy output.

However, it may make more sense to ignore the resting rate altogether and only consider kcal consumption on top of that. In this case, the amount of humans increases quite a bit. Let's say a male has a resting rate of 2000 kcal/day and uses 3000 kcal/day when doing strenuous activity, so that there are 1000 kcal/day being used on the activity. Then this puts us at around 26 humans. If we look at a female with resting rate of 1800 kcal/day and a rate of 2600 kcal/day during strenuous activity, this puts us at about 32 humans' worth of energy per day.

With these caloric variations, we can update the claim to something like: The amount of energy that the average US household uses each day is equivalent to the amount of energy that anywhere from 10 to 30 adult humans use in a day (to perform tasks).

Now, if we imagine those 10-30 humans doing tasks around your house, "powering" it, aren't we living like kings and queens (or at least aristocracy)?

Of course, I don't see how a human can act as a refrigerator, but some amount of comparison may work, such as washing clothes, washing dishes, or powering a fan. I think the analogy is more useful for thinking about the raw amount energy output (or input) we use every day, probably in the background without thinking much more about it.