Determining Solar Panel Size

Before you begin to size a solar system follow these steps to determine your home s average electricity consumption and pv needs.

Determining solar panel size.

Typical residential solar panel dimensions today are about 65 inches by 39 inches or 5 4 feet by 3 25 feet with some variation among manufacturers. The size of a solar panel is a huge determining factor for placement production and optimization. There is some variation from brand to brand and if you re installing a large scale solar panel system such as for a warehouse or a municipal building your panels will be closer to 6 feet long. In our solar panel size guide we will highlight everything you should know about your solar panel sizing and possible power output.

The average size of solar panels used in a rooftop solar installation is approximately 65 inches by 39 inches or 5 4 feet by 3 25 feet. The roof size available for setting up the solar panel would need to be ascertained in square feet. Calculate your kwh usage gather the kilowatt hours kwh usage from your electric bill. The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site.

A home that consumes 1 000 kwh per month will normally need between 20 and 30 solar panels. The size available needs to be divided by the size of the solar panel that is going to be used. Look up your peak sun hours average peak sun.