50% tax refund available imediately after install and 30% refund that is applied to your federal tax liability. most panels carry a 25 year warranty which is saying the panel will be making 80% of the rated output at 25 years. most inverter carry a 15 to 20 year warranty as well. maintanance just hose them down if you do not get rain for a while. the systems that we install have a computer progam that comes with the system and you can see what every panel in the system is doing at this minute, the day , the month , and the year.
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