How Much Solar Panel Do I Need For My House

The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size.

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. We do not recommend putting solar panels on northern facing roofs facing from azimuths 285 to 80. 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.

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. 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. To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. 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 amount of energy your home uses over a certain timeframe say a month is measured in kilowatt hours kwh. See how many panels you can fit on your roof using our solar panel drawing tool.