When you’re building a solar power system, you’ll need to ensure that the system you design provides enough watts to meet your energy needs. While the overall output of your system is the most important number to consider, it’s also helpful to think about how many watts you want each panel to produce. In some cases, buying a higher wattage solar panel can benefit your system, but don’t automatically assume it’s always the best choice. Keep reading to learn both the pros and the cons of choosing a high-watt panel over one that offers fewer watts.
Pro: Fewer Panels Needed
One of the biggest advantages of buying a higher wattage panel is the fact that you’ll need fewer panels for your system. Since each panel produces more power, you can reach that ideal output number with fewer panels on the roof. For example, if you need a 5 kW system, you could achieve this with 17 panels that produce 300 W each, or with only 10 panels that produce 500 W each. This can help you save on roof space and create a less cluttered look on your rooftop design.
Pro: Better for Limited Roof Space
On a related note, if you have a small roof or one that tends to be shaded, you’ll likely want to look for larger wattage panels. This allows you to maximize power output for each panel without taking up a lot of space. When every square foot of rooftop space matters, higher wattage panels tend to be a smarter investment for your solar power system.
Pro: Long-Term Savings
Although higher wattage solar panels do cost more upfront, they can lower your installation costs. With fewer panels, you’ll need less racking and wiring, as well as fewer labor hours, which can offset some of that added expense. Additionally, panels with a higher output can increase your system’s return on investment over time.
Con: Higher Upfront Costs
The main drawback of larger panels is the initial price tag. They typically cost more per panel when compared to lower wattage options, which can make that upfront cost seem steep. However, keep in mind that the overall cost per watt produced tends to be lower, since you need fewer panels.
Con: Heavier and Larger Panels
Higher wattage panels are usually physically larger and heavier. This can make installing them trickier, especially on roofs with a steep slope or unusual design. Older roofs may also need to be reinforced to accommodate these heavier panels, which can increase costs.
Con: Less Design Flexibility
Using larger panels can reduce flexibility when it comes to your system’s design. With smaller panels, installers can arrange them more easily around rooftop features like chimneys, vents, and shaded areas. Bigger panels, however, offer less room for these adjustments, which could be a drawback for some roof designs.
So, when choosing between a Mission Solar 410W module and a panel with higher or lower wattage, be sure to keep all of these factors in mind.
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