Exactly. I call complete bullshit on this. The utility company charges their customers $.xx cents per KWH; built into this price is everything from the cost to generate the power, distribute the power, their payroll costs, taxes, fees, advertising & marketing, research and development, lobbying, legal, snacks for the break room, etc, etc, etc, etc, etc.
I want to say you're breaking fourth normal form, but I can't.
I want to say you're storing derived data, but I can't.
I CAN say that data structure is just butt-ass-ugly.
If you don't misplace it..
or drop it and scramble the positions of all those nanoparticles.
Only God can make random selections.