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When choosing solar panels, it’s important to consider factors such as efficiency, wattage, manufacturer, appearance, and the number of silicon cells. The two most common types of solar panels today are 60-cell and 72-cell panels. But what’s the difference, and which is best for your installation?
Basics of Solar Photovoltaic Cells
A photovoltaic cell is a key component of a solar panel that converts sunlight into electricity. These cells, typically made of crystalline silicon wafers, generate electricity when sunlight energizes the electrons in the silicon, causing them to move.
While a single solar cell produces a small amount of electricity, they are grouped together in modules to form solar panels. The number of cells in a solar panel can range from 36 to 144, with 60-cell and 72-cell panels being the most common.
The Function and Technology of Photovoltaic Cells
Differences Between 60-Cell and 72-Cell Panels
Both 60-cell and 72-cell panels are used in various installations, from rooftops to ground mounts and carports. However, 60-cell panels are more common for residential installations, while 72-cell panels are often used in commercial or large-scale projects. Here are some key differences:
Dimensions
60-Cell Panels: Typically measure around 5.4 ft by 3.25 ft.
72-Cell Panels: Measure about 6.5 ft in height and the same width as 60-cell panels.
The larger size of 72-cell panels can be beneficial for installations with ample space, such as large rooftops or ground-mounted systems. However, for smaller or more complex layouts, 60-cell panels are often recommended due to their smaller size and flexibility in fitting tight spaces.
Installation Cost
60-Cell Panels: Lighter and easier to install, making them more suitable for residential rooftops, which can lead to lower labor costs.
72-Cell Panels: Often cheaper for large-scale installations as fewer panels are needed to produce the same amount of electricity, reducing racking and installation costs.
Wattage and Power Output
60-Cell Panels: Though smaller, some models can match or exceed the power output of certain 72-cell panels, depending on the technology used.
72-Cell Panels: Generally have higher wattages due to the additional cells but this isn’t always the case. The power output depends more on the quality and efficiency of the cells rather than just the number of cells.
Additional Considerations for Choosing Solar Panels
When selecting solar panels, consider the following:
Cost
Compare 60-cell and 72-cell panels on a cost-per-watt ($/W) basis to standardize the price across different system sizes.
Aesthetics
Panels come in various colors and designs. If the appearance is important, look for black-on-black options for a sleek look, though they may be more expensive.
Warranty, Efficiency, and Durability
These factors are crucial for long-term performance and should be prioritized over the number of cells.
The choice between 60-cell and 72-cell solar panels depends on your specific needs and installation conditions. For residential installations with limited space, 60-cell panels are usually the best option. For commercial or large-scale projects, 72-cell panels can offer cost advantages and higher power output. Always consult with a professional installer to determine the best solution for your solar energy system.
