When planning a solar project in Rhode Island, choosing the right panels is crucial for long-term success and maximum energy savings. However, some common mistakes can lead to frustration, inefficiency, and extra costs down the road. Here are three critical mistakes to avoid when selecting solar panels for your project.
1. Choosing Panels That May Be Hard to Replace in Coming Years
The solar industry is constantly evolving, and some panel manufacturers come and go. Choosing panels from less reliable or smaller companies could leave you in a bind if you ever need replacements.
Uncertain Future for Some Panels: Certain Chinese-manufactured panels, while often cheaper upfront, may become difficult to replace if the manufacturer ceases operations or stops exporting to the U.S. Even some larger companies, like LG, have exited the solar panel manufacturing market, leaving homeowners unable to find matching replacements for their systems.
Stick to Leading Manufacturers: Choosing panels from reputable, well-established brands increases the likelihood that replacements will be available in the future. Companies like SunPower, Panasonic, and REC are known for their reliability and longevity in the market.
Pro Tip: Always research the manufacturer’s track record and ask your installer about the long-term availability of replacement panels.
2. Focusing on Number of Panels vs. System Size (kW)
It’s easy to get caught up in panel count when comparing solar systems, but this is not the right way to measure a system’s capacity. The true indicator of a solar system’s power is its size in kilowatts (kW), not the number of panels.
Understanding System Size: The kW rating of a system reflects its total capacity, while the number of panels only tells you how many physical modules are installed. Some companies might claim their system produces more energy even if the kW size is identical to a competitor’s—this is simply not possible.
Panel Efficiency Matters: The efficiency of individual panels can vary. For example, higher-efficiency panels might require fewer modules to achieve the same kW output as lower-efficiency panels.
Why It Matters: Focusing solely on panel count can lead to overpaying for a system that delivers less energy than expected. Always ask for the system size in kW and compare systems based on this metric for a fair evaluation.
3. Choosing Polycrystalline Panels Over Monocrystalline Panels
Not all solar panels are created equal, and the materials used in their construction play a significant role in their performance and longevity. One common mistake is opting for polycrystalline panels instead of monocrystalline panels without understanding the differences.
Monocrystalline Panels: These are the modern standard and offer the highest efficiency (15-22%) due to their pure silicon construction. They perform well in low-light conditions, have a sleek black appearance, and degrade more slowly over time.
Polycrystalline Panels: These older panels are made from fragmented silicon and are less efficient (13-16%). They degrade faster and lose efficiency quicker, making them a less desirable choice for long-term projects.
Pro Tip: While polycrystalline panels may have a lower upfront cost, the energy loss over time makes them a less cost-effective choice for Rhode Island homeowners. Always opt for monocrystalline panels to ensure your system remains efficient for decades.
Conclusion
Choosing the right solar panels for your Rhode Island project is critical to achieving the best results. Avoid the mistakes of selecting panels that may be hard to replace, focusing on panel count instead of kW, or opting for outdated polycrystalline technology. By prioritizing leading manufacturers, understanding system size, and choosing high-quality monocrystalline panels, you’ll ensure your solar investment is built to last and delivers maximum energy savings. Work with a trusted installer to guide you through the process and set your system up for long-term success.
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