I don’t know anyone who has an oil well in their back yard but loads of people have solar energy to burn. Instead of getting peanuts selling excess power to the grid, storing it in an EV saves a heap more cash. With petrol prices rocketing like a wart in Ukraine and the increased maintenance cost of an oil burner car, I calculated I was saving the equivalent of 70 cents per kWh using my solar in the Leaf. That sure beats the 12 cents on offer from the coal barons running the electricity grid for selling back to the network. A third of your fuel cost is tax, so you can see how running free on sunshine makes natural sense.