In this new clip from Moon, you'll briefly learn how, in Duncan Jones's futuristic sci-fi tale, technologies allow massive amounts of energy to be harvested and used to supply power to Earth's many plug-innable things. As the title implies, the moon is involved.
It's more interesting than it sounds:
So 70% of Earth's energy is supplied by Sam Rockwell running on a lunar treadmill? I didn't really pay attention.