Solar Panels

How Big Is A Typical Solar Panel On A Home?

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Standard Solar Panel Sizes

The usual traditional solar panels commonly come in 2 different configurations: 60-cell and 72-cell.

With that being said, the standard dimensions for each option are:

  • 60-cell panels: 39″ x 66″ (3.25 feet x 5.5 feet)
  • 72-cell panels: 39″ x 77″ (3.25 feet x 6.42 feet)

 

Standard Solar Panel Dimensions

Standard solar panels commonly come in 2 different configurations: 60-cell and 72-cell.

An individual solar cell is a 6” x 6” square. 60-cell panels are laid out in a 6×10 grid. 72-cell panels are laid out in a 6×12 grid.

  • 60-cell panels: 39″ x 66″ (3.25 feet x 5.5 feet)
  • 72-cell panels: 39″ x 77″ (3.25 feet x 6.42 feet)

These are the standard solar panel sizes typically for most residential and commercial installations.

How Big Is the Average Solar Array?

The average household uses approximately 867 kwh of electricity each month. It would take a 6.5 kw of solar array to offset the full usage.

With a 60-cell solar panels with a stock range from 285w to 315w, and a stock of 72-cell panels ranges from 335W to 375W. We can figure out approximately how many panels it would take to build a 6.5 kW (6500-watt) system:

  • 6500W / 285W = 22.8 (23 panels)
  • 6500W / 315W = 20.6 (21 panels)
  • 6500W / 340W = 19.1 (20 panels)
  • 6500W / 375W = 17.3 (18 panels)

An average-sized solar system will contain 18-23 panels depending on the efficiency of the panels you use.

Electricity Energy Efficiency Solar Panels

How Much Power Does a Solar Panel Produce?

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“How do solar panels actually work?” This question is asked many times here at Solar Fuse. Well we can answer this question with also telling your how much power is used, per square foot. This question is not a hard question to answer. The main determination is really figuring out what size solar panel system a homeowner needs and what they want. To understand how much solar power is produced per square foot it’s helpful to know what solar panels are made of.

 

How Solar Panels Are Made

Think of it as a math problem with the equation being: If a solar panel is rated to produce 360 watts, and it’s about 3-and- ¼-feet wide by 5-and- ½- feet long, then each square foot must produce about 20 watts, but this is not necessarily correct.

 

Temperature: Temperature has a lot to do with heat. If there’s too much heat, your solar panels may not work as effectively. Once the heat increases to higher than 77 degrees Fahrenheit, then the power is will decrease. The best panels have a low “temperature coefficient”, so the hot temperatures are minimized and won’t affect the energy saving process.

 

Spectrum: Rainy and cloudy days can also affect your solar panels. Contrary to what most think, solar panels work during cloudy or rainy days. The reason for this is because there is still a wide spectrum of light that is being received by the panels. Although clouds block some light, it never fully block all of sunlight or the spectrum. This is the reason that it is still possible to get sunburned during rainy or cloudy days.

 

Angle: Depending on the angles and direction that your home is facing, this will determine the energy you are saving and how the solar panels are working as well. Most solar panels are built with “anti-reflective glass,” which means once light enters the panel it will reflect back into the solar cell to hold as much power as possible.

 

Amount of light: Typical solar absorption is at its peak around noon, but this also depends on the location. Shadows from trees, dust, leaves and other factors can block light, affecting solar panel power output. Shading can not only hurt power production, but it can also damage solar panels over time.