I keep a log of most things. Here's what I keep track of or at least make guesses.
LEDs. I calculate this based on my actual wattage at the wall and my bills kva cost. X .7. Because they are off sometimes.
Fans, and ac, same but no .7 calc.
Nutes are fixed amounts with known cost.
Factor and amortize cost of equipment at 12% depreciation per year.
Cost of square footage of home as growspace. Mortgage/sq ft.
The only uncalculated variable is my labor. I can't charge what I actually make for a living, I can't use some arbitrary number either so I don't factor it, its donated. Thats probably a cop out but meh.
And water, sewer, trash. Same percent of the bill as sq footage.
We missing anything??