Solar power is more accessible than ever, and homeowners across the country are increasingly investing in solar panels to power their homes. However, as with any investment, selecting the right equipment is essential to get the most out of it. When choosing solar panels, one of the most common questions is: 60-cell vs 72-cell, which is better? The difference between 60-cell and 72-cell solar panels might seem minor, but it impacts system design, cost, and efficiency in surprising ways. This guide will walk you through the pros, cons, and ideal use cases for each type of solar panel to help you decide which option suits your needs best.
What Are Solar Cells, and Why Do They Matter?
Solar panels are made up of photovoltaic cells that convert sunlight into electricity. The more cells a panel has, the more energy it can potentially produce. The two most common configurations are:
- 60-cell panels: Smaller and generally suited for residential use.
- 72-cell panels: Larger and often preferred for commercial applications but increasingly popular in residential settings as well.
Let’s dive into the differences between 60-cell and 72-cell solar panels to see how each type fits into various settings.
Understanding the Differences: 60-Cell vs 72-Cell
Key Characteristics of 60-Cell Solar Panels
60-cell panels are considered the standard for residential installations due to their smaller size and weight.
- Dimensions: Around 39” x 65”
- Weight: Approximately 40 pounds
- Typical Power Output: 250-300W per panel
- Best For: Smaller or oddly shaped roof spaces
60-cell panels are generally easier to install and handle due to their smaller size, making them a practical choice for homes with limited roof space. However, they require more panels to generate the same amount of power as their 72-cell counterparts, which can increase installation time and complexity if the home needs a high power output.
Key Characteristics of 72-Cell Solar Panels
On the other hand, 72-cell panels are larger, making them an efficient choice for systems that require high power output with fewer panels.
- Dimensions: Around 39” x 77”
- Weight: Approximately 50 pounds
- Typical Power Output: 350-400W per panel
- Best For: Large, open roof spaces or ground-mounted installations
Due to their size, 72-cell panels often result in fewer electrical connections, less mounting hardware, and faster installation on large roofs or ground-mounted systems. Despite being more commonly associated with commercial installations, they’re suitable for residential use, too—especially when space is ample.
Pros and Cons of 60-Cell vs 72-Cell Solar Panels
Below, we’ll explore the unique benefits and drawbacks of each type to help you make an informed choice.
60-Cell Panels
Pros and Cons
- Easier to install due to smaller size
- Ideal for homes with limited roof space
- Widely available in residential markets
- Lower power output per panel
- More panels may be needed
- Less cost-effective for high-energy demands
72-Cell Panels
Pros and Cons
- Higher power output per panel
- Fewer panels needed for large systems
- Reduced installation time for high-power systems
- Heavier and bulkier to install
- Requires larger installation area
- Limited compatibility for small or complex roofs
When to Choose 60-Cell vs 72-Cell Panels
Sizing Your System for Efficiency and Cost-Effectiveness
Choosing Between Size and Efficiency
While 72-cell panels provide more power per panel, they are also larger and heavier. If you have ample roof space and fewer limitations, 72-cell panels might be ideal due to their efficiency. However, if you have a smaller roof or want to retain flexibility with panel placement, a 60-cell system could work better.
Calculate the Cost-Per-Watt
One of the simplest ways to determine which panel provides better value is by calculating the cost-per-watt. Divide the price of each panel by its wattage to find out which option is more cost-effective. For instance, EnergySage offers calculators and resources to help you compare costs, enabling you to see which configuration aligns with your budget and energy requirements.
Evaluating Roof Space and Layout Options
Think about how much space is available for installation. If your roof has smaller or irregular sections, 60-cell panels can be more adaptable. However, for expansive roofs or ground-mounted systems, fewer large 72-cell panels might be simpler and more economical.
Example of Roof Layouts
- Limited Roof Space: If your available roof space is limited to only a small area, 60-cell panels can provide flexibility. A small roof space will also allow better integration with other roof structures like skylights or vents.
- Large Roof Space: With more roof space, 72-cell panels can save on installation time and materials, as you’ll need fewer panels for the same power output.
Mixing 60-Cell and 72-Cell Panels: Is It Possible?
In some cases, you might consider mixing 60-cell and 72-cell panels to optimize your system for different roof sections. For instance, a triangle-shaped roof might have a row of 72-cell panels in the center, with 60-cell panels on either side to fit irregular spaces.
Important Considerations for Mixed Systems
When mixing panel sizes, you’ll need to consider voltage compatibility. Each type of panel requires specific inverters, so consulting with an experienced solar designer is crucial. They can ensure that your mixed system runs efficiently without causing unnecessary energy loss or compatibility issues.
For more information on solar compatibility and planning, SolarReviews provides guides and tips that can help you set up the right system for your needs.
FAQs
Are 72-cell panels harder to install on a residential roof?
72-cell panels are slightly heavier and larger, making installation a bit more challenging for residential installers. However, experienced installation teams usually handle these panels easily, as the extra size is not significantly cumbersome.
Can I use 72-cell panels if my roof space is limited?
If space is limited, consider using 60-cell panels instead. They’re smaller and fit into tight or complex roof sections better, while still providing solid power output.
Do I need special equipment to mount 72-cell panels?
No, most standard racking systems support both 60- and 72-cell panels. However, thicker racking rails may be recommended if you live in an area prone to heavy snow or high winds.
Conclusion
In the end, whether you choose a 60-cell or 72-cell solar panel depends on your specific energy needs, roof space, and installation preferences. 60-cell panels are a solid choice for homes with smaller roofs or unusual layouts, while 72-cell panels can offer higher efficiency for larger, unobstructed spaces. Whichever you choose, remember that the overall cost-per-watt and layout suitability are often more important than the number of cells.
Ultimately, selecting the right solar panel size comes down to finding the best match for your unique needs. By evaluating your roof space, energy requirements, and budget, you’ll be well on your way to a more efficient, cost-effective solar power system tailored to your home.