After considering solar panels on and off for a few years, I pulled the trigger late last year. Ended up with a 17 panel, 7000 kWh for $17K which is $11,900 net of tax credit. Got my 1st bill: $15.99. For electricity, you pay $10 per month to be on the grid. They believe our yearly true up will be $0. Pacific Gas and Electricity (PGE) charges a lot for electricity; one of the highest in the nation. Rates are going up, as they have to pay for trying to burn down CA. Was it a great financial move? Not in the short run; going forward probably. We did get the Tesla in December, so I am charging it at home for free. I am very happy with the decision and how it turned out. And I plan to blast the AC this summer... Finally, we really like the GS350; if Lexus comes out with a new model, it better be electric. I might be a customer, but, go big or go home.