Marco,
>From what I see most are absorbing the cost of the 10yr. warranty and hope that the profits will cover any issues before the job becomes a total loss of profit (that would be A LOT of failures, per job to eat ALL profit)! I personally figure $500-$1000 depending on distance from my office. I think it is a safe bet to assume you will make at least 3 service calls over 10 years.
The bottom line to me is if you look at the profit dollars on a residential job and the fact that you're on the hook for 10 years and it is a rare inverter manu. that will pay for your time, the biz plan would not sell to anyone! We all need to lean on the manu's for time compensation and only support those that support us and their products. 
However, you may have a bigger issue - many module manu's void their warranties if you are too close to a coastline!! Some of these distances would exclude entire islands! Give me a break, I'll swallow that for corrosion, but a potted J-box should never corrode and the rest is just a power warranty to me. Let's not let them slip this one in either, gez if it was not for the passion about this stuff......
good luck,
-jeff


>From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions

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