Here at GetSolar, we spend a lot of time discussing rebates and tax credits that are available to residents and companies who install solar energy systems. The main reason is that, absent such incentives, solar PV systems don’t provide an attractive rate of return for your investment. Put differently, without some help from Uncle Sam and/or your state government, you’d be better off investing in stocks and bonds – or, in the throes of current market uncertainty, hoarding gold bars in that dusty nook behind the water heater in your basement.

Today, I provide a quick overview of other factors that will influence your system’s bottom line. Generally speaking, the following factors relate to a system’s expected performance in real-world conditions. If you’ve already gotten a detailed quote from a solar energy professional, you’ll likely recognize a few of them…

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