How Much Solar Panel Do I Need For My House

Assuming you are going to choose standard efficiency solar panels here are the most common sizes for residential solar systems and their kwh production potential to give you an idea of how many panels you would need to run a house.

How much solar panel do i need for my house.

The northern sky will usually not produce very cost effective energy from even the most efficient solar panels. The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site. The amount of energy that solar panels can absorb and then produce is measured in kilowatts kw. A 3kw solar system which consists of 12 panels can produce an average of 4 200 kwh per year.

The amount of energy your home uses over a certain timeframe say a month is measured in kilowatt hours kwh. The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. See how many panels you can fit on your roof using our solar panel drawing tool. A typical american home will need 14 36 solar panels to cover their power bill and at least 227 square feet of rooftop space to accommodate the solar panels.

A professional solar installer can help calculate the number of solar panels to create the most cost effective system or you can use the solar system size calculator on this site. A home that consumes 1 000 kwh per month will normally need between 20 and 30 solar panels. We do not recommend putting solar panels on northern facing roofs facing from azimuths 285 to 80.