To tell the true, you over paid $3000-$5,000. Your extra warranty is nothing as SMA solution is at least 1.500-2.000 cheaper than Enphase and SolarEdge. They can give you 1-2 more inverter.
I hope they did your site survey, roof , and electrical inspection before you sign contract and paid for deposit. Sign anything before all are done is the risk on your side. As they might come up with something and you force to pay.
I hope your payment schedule is reasonable ? Only pay 50% - 75% when at least everything is installed. Paid the rest when everything is sign off by city and electrical company.
Otherwise, you have to hope that the project manager does not find any extra things or city does not find any extra things for you to do.... Because extra = extra money.
I hope they did your site survey, roof , and electrical inspection before you sign contract and paid for deposit. Sign anything before all are done is the risk on your side. As they might come up with something and you force to pay.
I hope your payment schedule is reasonable ? Only pay 50% - 75% when at least everything is installed. Paid the rest when everything is sign off by city and electrical company.
Otherwise, you have to hope that the project manager does not find any extra things or city does not find any extra things for you to do.... Because extra = extra money.
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