Consuming (i.e., food, clothing,fuel,etc.) is the "energy" that drives The Matrix. Humans are mere consumers. That's how they're refered to. That's how we refer to ourselves.
The fact that we're choosing ro over-consume to the point of killing ourselves and killing to planet is about as dystopian as it gets.
Well, if we go with The Matrix, then these battery specimens so far have only been storing energy, not releasing it.. =)