How Much Solar Panels Do I Need For My House

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 solar panels do i need for my house.

There is a mathematical way to determine this which will get you close. 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. To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. One solar panel produces about 1 24 kwh per day.

Even if you know the amount of solar panels you need it won t help if your roof can t fit them. 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. How many solar panels do i need to power my house. 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.

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. The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. 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 roof space do i need for solar panels. A home that consumes 1 000 kwh per month will normally need between 20 and 30 solar panels. In the chart below we break down the square feet your rooftop would need for a 5kw 10kw and 15kw system. Or there is a simple way to determine your needs that will only cost you about 20.