Imagine that 100% of administration, installation, and maintenance costs at Superchargers are handled by sales of Model S and Model X. If you are selling 500,000 of the Model ☰ per year, and are using $500 per car to contribute to the Supercharger network, that gives you $250,000,000 to pay for electricity. Tesla Motors has already told us that cost is actually rather negligible. So much so that they don't bother to call out the number in their SEC filings. Even if it were as much as $0.25 per kWh, that allows them a pool of 1,000,000,000 kWh. Or, enough to pay for 20,408,163 charging sessions at 49 kWh each. Yes. Over twenty million -- per year. And I doubt their overall cost for electricity is anywhere near that high. If it were only $0.10 per kWh, it would be enough to pay for over fifty-one million charging sessions per year.