PV Gap

Travis Said:

how many 20 amps solar panel are needed for the average home?

We Answered:

Solar panels are typically rated in watts, as that's what really matters in the end. That said, 20 amps is an unusually high output for a single panel. The type for house-sized applications are generally 5-8 amps, maybe 10 at the top end.

But to your question, it's hard to pin down what an average home is. The number of panels needed depends on the home's electrical usage, but also on how much sun the area gets. In Seattle, it will take twice as many panels as Phoenix for the same output.

Our house is in Northern California, and we have 18 panels, in a 2.5 kW array, providing essentially 100% of our electricity. Whether we are typical, I have no idea.