Hi Steve:

Good question. The array is made up of individual PV cells, and they can be replaced individually, and are less expensive than the entire array, but you need some skills to do that. Kind of like working on your car yourself. Hire it done and you take the chance the costs can be prohibitive. The panels (arrays) themselves are actually fairly cheap now, compared with years ago, and so replacing them would be the easiest fix. The control modules that regulate the voltage, etc. can be a greater cost but seem to be less prone to breakdown, as they are not exposed to the elements.

I agree Kay, and being able to run stuff when there is no power from the utility is a big plus.

Good point Patti Ann. These coupled with the energy credits from the utility companies make for great incentives. The one thing I thought of with all the storms going through was insurance. I would make sure my solar array was covered under my homeowners policy:)

Hi Jay:

I could not access your old post.

I would read it with interest.

Cost is part of the equation for sure. For some the reliability of the conventional power supply is an issue, and I would avoid putting an array on my roof if possible, as that presents many hazards.

Clearly it isn't for everyone, but for those with some skills and a milder regulatory environment, it may be useful.

Paul; This is just part of the fun of Active Rain, and the interaction I have always craved. Thanks for the encouragement though.