Are you going to account for the cost of making water? Not the bill you pay to the utility for use, but the actual cost of formulating water?
What about air?
How about the cost of creating a sun if you rely on solar power?
Short answer: cost, flux, total size, and rate of consumption all matter.
Are you going to account for the cost of making water? Not the bill you pay to the utility for use, but the actual cost of formulating water?
What about air?
How about the cost of creating a sun if you rely on solar power?