Doing it in the accounting manner that a typical firm would do is foolish in this instance. A homeowner is going to sweat assets, and in the case of Solar a 1%

Doing it in the accounting manner that a typical firm would do is foolish in this instance. A homeowner is going to sweat assets, and in the case of Solar a 1% degradation per year means that, short of some damage or failure, the time you're likely to sweat them is between 20 and 80 years.