Large 72 Cell Solar Panels Can Go On Home Roofs But ...

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This article focuses on larger solar panels, specifically those with 72 cells, which surpass the typical 60 cell panels usually found on residential rooftops. The dimensions of 72 cell panels are approximately 1m by 2m, making them considerably larger than their 60 cell counterparts. Although designed primarily for commercial applications or solar farms, these sizable panels can indeed be utilized on home roofs, provided they are installed correctly and with appropriate precautions.

However, improper installation is where issues often arise. One of the main challenges involves the clamping technique used to secure these panels. If clamps are not positioned in the designated zones specified by the manufacturer, it may not only compromise the integrity of the installation but could also void any warranties due to potential damage caused by wind-related flexing.

Throughout this article, I will discuss the significant drawbacks associated with 72 cell solar panels while also highlighting a singular potential advantage, which is cost savings. It is important to remain vigilant about the implications of opting for a budget-friendly 72 cell solar panel installation.

Moreover, it's worthwhile to mention that while these larger panels are merely 20% bigger than standard ones, comprehension of their nuances doesn't require an expert analysis. The aim here is to focus on the practicalities and considerations without delving into complex technicalities.

Half Cut 144 Cell Panels Are Similar To 72 Cell Panels

Recently, half cut solar panels, which feature their cells cut in half for improved efficiency, have gained popularity. As a result, a 144 cell panel is essentially a 72 cell model divided in half. The insights shared about 72 cell solar panels in this article are equally applicable to half cut 144 cell models, as they share comparable dimensions and weight, with only minor variations in average performance metrics.

3 Disadvantages Of 72 Cell Panels

The use of 72 cell solar panels for home installation is seldom seen due to three primary disadvantages:

1. Being larger, they present challenges in arranging panels optimally on available roof sections.
2. Increased weight complicates the task of safely transporting and installing them on rooftops.
3. The clamping zones can vary compared to standard panels, making accurate installation more complex.

Big Panels On Little Roof Can Be Big Problem

Utilizing smaller solar panels allows for more efficient coverage of roof space. Were solar panels the size of mobile phones, one could seamlessly fit a whole roof area with minimal gaps. However, even with standard 60 cell panels, there is often excessive space left uncovered, a reality compounded by the larger 72 cell modules, which can lead to suboptimal system capacity when compared to standard panels.

Heavier Solar Panels Are Harder On Installers

While various methods exist for lifting solar panels to roofs, the majority rely on manual labor. The increased weight of 72 cell panels (approximately 22.5kg versus the typical 19kg for 60 cell panels) becomes significant during installation, causing fatigue and might even result in injuries. Though fewer heavy panels may be carried overall, frequent trips with lighter panels are generally safer and more manageable.

In terms of structural stress, the extra weight posed by the 72 cell panels is balanced out over an area similar to that covered by 60 cell modules, thus avoiding any considerable load issues for the roof itself.

Panel Clamping Zones Can Be A Problem

A notable issue with some 72 cell solar installations is that their clamping zones may differ greatly from those designated for 60 cell models. Certain panels may require clamping only on their longer edges or feature restricted zones, leaving less room for installation errors. If clamping measures are not followed according to manufacturer specifications, warranty claims can be jeopardized.

To determine proper clamping zones, installers should consult the installation manual usually available on the manufacturer's website. For example, leading solar panel producers like JinkoSolar offer clear guidance on securing their panels accurately.

Moreover, while some manufacturers provide various clamping zone options based on wind pressure requirements, Australian laws dictate that installations must always adhere to high wind standards for safety.

Voltage Issues

It's important to note that while standard 60 cell panels usually handle up to 1,000 volts, most 72 cell panels are rated for 1,500 volts. However, since residential systems in Australia are limited to 600 volts, this distinction becomes irrelevant for home installations, assuming all components are installed to standard.

Their One Potential Advantage – Cost

The primary advantage of 72 cell solar panels lies in potential financial savings. Typically, they may yield a lower cost per watt than 60 cell alternatives, minimizing the mounting hardware requirements and labor costs due to fewer panels being necessary for the same capacity.

Companies that pay subcontractors on a per-panel basis may also benefit from offering larger panels to reduce installation expenses. However, it's essential to ensure that the number of mounting rails and clamps does not considerably increase the overall installation cost.

Be Cautious With Offers Involving 72 Cell Panels

While it is entirely feasible to install 72 cell solar panels effectively, caution is advised. The market contains varied quality levels among installers, some aiming for high standard workmanship and others seeking merely to cut costs. Engaging with installers who lack comprehension of your specific needs or roof attributes can lead to unsatisfactory installations.

Quality Installers Rarely Use 72 Cell Panels

Any reputable installer is likely to default to the more universal standard 60 cell panels, minimizing challenges linked with installations. Given that the 72 cell panels don’t significantly enhance cost-effectiveness, it seems unlikely that their use will become commonplace in residential setups moving forward.

For more information, do check out the reliable 72 Cell Solar Module Supplier.