How do I determine what a kWh may cost at my property?

Start from your own purchase price per kWh and add a margin of 20 to 30 percent for risks such as extra air conditioning or charging use; at 0.32 purchase price and 25 percent margin that comes to 0.40 per kWh. Fixed costs and background consumption you can bear yourself or partly incorporate into the price, that is your choice. Compare your price with what guests pay at home: 10 to 30 percent higher is justifiable, twice as high feels like a penalty. For a charging point you set your own, often higher price, separate from residential electricity.