How To Size Solar Panels

Solar panels for households typically come in the standard dimensions of 1 70m x 1 00m that s around 1 7m2 for every panel installed however the wattage output w of the panels will likely vary between 250w and 360w for a more efficient module.

How to size solar panels.

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. The number of cells and solar panel size. Measure how much space you have to mount your solar panels. Read our guide to choosing your solar energy system installer.

Determine your average monthly kwh usage. Calculate your kwh usage. Decide on a budget for your system. Home in dallas texas would need about 25 conventional 250w solar panels or 17 sunpower 370w panels.

Solar panels used for commercial sites are a little bigger but that s because commercial buildings are usually larger and can contain the size of the panels. 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. Gather the kilowatt hours kwh usage from your electric bill. As you might already know the cells are the core of a solar panel.

Find a system that satisfies your power requirements but still fits within your space restrictions. 3 by the solar panels wattage to calculate the total number of panels you need. The more cells in the panel the bigger the panel and the higher possible output voltage. To figure out how many solar panels you need divide your home s hourly wattage requirement see question no.

Add up your kwh usage for 12 months and divide by 12 to figure out your average monthly. The number of cells determines the output voltage of the panel but it will also determine the solar panel size. So that average u s.