Elon has said in the past that the new solar roof will pay for itself over time. Electrek now reports pricing, so I thought it time to see if I could validate Elon's statement Assumptions: 12% efficiency 20% generation capacity Half of roof PV 15% average PV degradation Calc: At $21.85 a square foot, $235 a square meter 30 years of sunlight, 5 hours normal a day: 54750 kwh At 12% efficiency, 6570 kWh At 50% roof PV, 6570*0.5 = 3285 kWh 15% degradation, 3285*0.85 = 2792 kWh Well. If the reported cost includes installation this is exciting stuff. And if not, the material is free which is also pretty compelling.
