How Much Solar Panels Do I Need For My House

To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average.

How much solar panels 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. Determine how many solar panels you ll need. 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. 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.

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. There is a mathematical way to determine this which will get you close. 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.

The amount of power kwh your solar energy system can produce depends on the number of solar panels that can absorb solar energy and convert it into electricity. 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. The first step in determining how many solar panels and batteries you need to power your home is finding out how much power your home is actually using.

One solar panel produces about 1 24 kwh per day. 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. In the chart below we break down the square feet your rooftop would need for a 5kw 10kw and 15kw system.