I’ve been thinking about the difference between budgeting for regular spending, and budgeting for resources. I can budget, for example, for the amount of money I want to spend monthly on food, but I can’t seem to do that predictably for water, gas and electricity in my home. So, attached to the notion you’re discussing about making consumption choices for these resources, is the idea of saying “this is what I want to spend every month on my electricity”, and having some kind of indicator that shows that amount depleting as it is consumed.