Hi I just had a Solarcity person visit me for initial consultation. We moved into a brand new home a month ago and I'm keen to get solar on the roof. This is what I'm working with: Baseline consumption about 6-8kWh / day Extras that are not calculated in baseline: New hot tub - max 2-3 kWh / day Tesla charging - don't drive a lot locally, so estimate 20kWh / every 5 days Fiat 500e charging - 20kWh / every 5 days This gives me a total consumption of about 520 kWh / month * $0.20 = About $120 electric bill. I asked for a quote on a 6kW solar system and the loan would be about $200 a month for 10 years. And here is the question. Is the 6kW system a right size for us? I'm not going to invest in battery storage for now, so any extra electricity is going back to the grid, and as I understand, PG&E does not pay much for production over usage (something like 5-6 cents per kWh). So all in all, I want to future proof my investment should I need to drive more, or use a little more electricity in the house, but at the same time, I want to minimize my monthly cost. Can you please suggest some data points, and / or advise on what size should I aim for? I'm more and more thinking a 4kWh system will be sufficient. Oh, SW facing roof, all day sun in Northern California. Thanks!!