How Much Solar Panels Do I Need For My House

In the chart below we break down the square feet your rooftop would need for a 5kw 10kw and 15kw system.

How much solar panels 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. Even if you know the amount of solar panels you need it won t help if your roof can t fit them. A home that consumes 1 000 kwh per month will normally need between 20 and 30 solar panels. It s not always easy to calculate exactly how much capacity you ll need for your solar panels or how much you ll actually be able to fit on your roof.

How much roof space do i need for solar panels. To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. There is a mathematical way to determine this which will get you close.

Determine how many solar panels you ll need. The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site. Solar panels are cheap enough that this can make economic sense but you may want to put on a few more panels in the south facing array to make up for the reduced production. Based on the example above if this household wants solar panels to cover just 70 of their home s electricity usage they d only need 6 solar panels 11 1 35 x 0 7.

In the example above you would need 24 solar panels to account for 80 of your average consumption 29 6 kwh daily usage divided by 1 24 kwh per panel. If you only want your solar panels to subsidise part of your home s electricity usage you can install a smaller number of solar panels. Or there is a simple way to determine your needs that will only cost you about 20. How many solar panels do i need to power my house.