Choose the right solar panels.
Roof size for solar panels.
If you have a small or odd shaped roof solar panel size is an important consideration when deciding on the size of a solar system.
Solar roof is comparable in price to a typical roof with solar panels.
Take these factors into account.
A plain long roof will allow you to buy larger and cheaper panels of lower efficiency to cover your energy needs.
In terms of dimensions you should care about the size of solar panels especially is your roof space is small or uncommonly shaped.
With solar panels requiring about 15 square feet each you need about 300 square feet of south or west facing roof space to fit 20 panels on your roof.
If the natural structure and materials of the roof are not suitable for an efficient system there are many ways in which you can adopt a roof to meet the requirements.
At the end of the day if you really want to install a solar panel array on your roof there will always be a way.
The average size of solar panels used in a rooftop solar installation is approximately 65 inches by 39 inches or 5 4 feet by 3 25 feet.
Set the direction of your solar panels by dragging the green arrow.
The commercial pv modules on the other hand are a bit larger and the standard model s length is about 6 5 feet by 3 25 feet or 78 inches by 39 inches.
To get these numbers we used high and low panel production ratios to calculate how many solar panels are needed on average.
Solar size number of panels power rating roof area covered.
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.
Size along with orientation the size of your roof will determine how many solar panels you can install.
Pick the right solar system for you.
With a large usable roof area you can buy more larger panels at a lower cost per panel to get to your target energy output.
There is some variation from brand to brand and if you re installing a large scale solar panel system such as for a warehouse or a municipal building your panels will be closer to 6 feet long.
Solar system based on roof size.
The average us home solar system size is 5 kilowatts or 20 250 watt panels.
First we need you to enter your address details so we can estimate your sunlight hours.
Solar roof is comparable in price to a typical roof with solar panels.
Solar panels for any roof type.