Solar Array

A solar array is a collection of multiple solar panels wired together and mounted as a single electricity-producing system. While a single solar panel generates a limited amount of power, combining panels into an array allows homeowners to scale their system to match their energy needs.

A typical residential solar array in the United States consists of 15–25 panels, producing 6–10 kW of power. The panels in an array can be wired in series (to increase voltage), in parallel (to increase current), or in a combination of both. Arrays are mounted on rooftops using racking systems or installed on the ground using ground-mount frames. The size of your array depends on your electricity usage, available roof or ground space, local sun hours, and budget. A properly sized array can offset 80–100% of a household’s annual electricity consumption.