How Many Solar Panels Will Fit On My Roof

This tool simply gives you a good estimate of how many panels will fit on your roof.

How many solar panels will fit on my roof.

The typical homeowner will need 28 34 solar panels to cover 100 of their energy usage dependent on location and roof size. The average solar panel puts out around 300 watts and are about 1 7 square meters. However roof mounted solar installations must also be more than 30cm away from the external edge of the roof meaning that actually you will need an even larger space so this needs to be factored in to any roof sizing calculations. Avoid southern facing roofs.

To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average. The panels will have to be installed so they get at least five hours of direct sunlight every day. Solar size number of panels power rating roof area covered. A single row of ten panels will need close to 40 feet of uninhibited roof space.

Here is an example of two homes that are both 2 500 square feet but are vastly different in terms of how many solar panels can fit on the roof because of the shape of the home. Please use slider to zoom into your particular roof. Follow along to calculate the amount of solar panels your specific home will need. Click again and continue the process to trace around your selected roof.

The residential pv modules measure about 5 4 feet by 3 25 feet or 65 inches by 39 inches and each module usually holds around 60 solar cells. How many panels will actually fit on your roof. Example of a fire setback code in california. Here s what that looks like.

Many people are limited to a 5kw inverter with 6 6kw of panels for a single phase house. To mark the roof area click in one corner and then extend the red line to the next corner. The exact size of the fire setback depends on the size of the building but for an average sized home each roof section that has solar panels requires two clear 36 inch wide pathways running along the edge of the roof. The home on the right has the exact same floor space but the roof is cut up into many more sections reducing the number of solar panels possible.

North north west and north east are all suitable. 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. Select the best roof area your panels should fit. This video shows how to use it.

Ten panels will produce approximately 3000 total watts.