But what are some actual numbers for costs to the grid per household? I've yet to see any concrete numbers but I see a lot of justification of minimum fees usi

But what are some actual numbers for costs to the grid per household? I've yet to see any concrete numbers but I see a lot of justification of minimum fees using grid costs as the primary reason. If these costs are so visible and important, why is it hard to find actual costs? Is it $2k per year per household? $400? $100? Does it match up with some of these $50/mo minimum fees?