How Much Energy Will My Solar PV System Produce? | A&R Solar

How Much Energy Will My Solar PV System Produce? | A&R Solar


One of the most common questions is what performance
can I expect from my system? To understand that, you have to understand
how a system is sized, or what the nameplate rating means. If you take one module that is 300 watts and
multiply that by 30, then you get a 9 kW system. In reality that 9 kW system, those modules
are tested in conditions that we can’t replicate out in the real world. It’s a standard for how they have to be labeled. When you have a 9 kW system, you’re only going
to get about 7.2 kW or 80 percent of the rated output of the system. That’s standard for all systems. Any reputable installer should be able to
tell you this as well. We take these considerations into account
when we generate our performance guarantee if you have one from us. So 80 percent of the nameplate output of your
system is about what you can expect on the kWh production. As far as when you are going to get the most
production, the summer months, you’re going to be getting about 60 percent of your total
year’s production, where in the winter months, you’re only going to get 20 percent of the
total year’s production. So summertime is where you are going to be
producing the most and generating credits for the wintertime when you are producing
a lot less.

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