Most of the cost of power is not the cost of the electrons. You have to account for the transmission and distribution infrastructure, the operation of the grid,

Most of the cost of power is not the cost of the electrons. You have to account for the transmission and distribution infrastructure, the operation of the grid, the safety programs, customer service, etc. Retail rates bake that all in. When you run local solar, they are still providing all of that for you when you need it, plus the distribution of the power you sell back to them. What would be "fair" would be to net meter at the value of the power, minus the cost of the grid and backup generation. The cold truth is that this would still be a negative number, i.e. what would truly be fair is for the homeowner to pay a fee to the power company even when they are running off of their own solar 24/7.