It isn’t - other customers are paying for their ability to have electricity when (and how much) they want it, via the net metering subsidy. If you divide their

It isn’t - other customers are paying for their ability to have electricity when (and how much) they want it, via the net metering subsidy. If you divide their cost by the lifetime expected generation, you get 9-13 cents per kWh depending on panel subsidy. This sounds great in California but isn’t far off from retail prices in some states. And the actual grid “wholesale” price is usually far less than that except at peak times or exceptional situations. You pay at retail to still have power in those situations. With net metering everyone else pays you that price for something you are not providing.