I feel like I lost a job due to the lack of understanding about what solar pv is capable of providing. The generator solution has a much lower initial cost, which is enticing, but it is a poor investment in the long run, less convenient, noisy, and less environmentally friendly. I thought I would put dollars to my own scenario to illustrate. As you can see at around year 6, solar pv pays for itself, and by year 10 the battery/inverter/charger solution starts to pull way from the stand alone generator solution. This analysis does not include any tax credits or incentives, assumes a 7000 hour life for the generator, and factors in the life cycle for the batteries.