I think you forgot that while Americans can and should save (a megawatthour ISN'T, or at least shouldn't be the average per month per house, vide the article), the rest of the world is way, way behind.

Are you telling Indians or Africans that they cannot even have electric cooking? Coal stoves kill thousands each year. Remember, you guys only have like 5% of the population.

You can limit your consumption -- it is grotesque -- but much of the rest of the world don't even have one lightbulb.