How to Determine the Right Number of Solar Panels for Your System

  • Nate Lewis
  • Executivo de Operaciones en Ventas

With bids from two different companies, each may be recommending a different number of panels. Who's right? Use this information to evaluate information you're given regarding how many panels your solar system should include.

 

With bids from two different companies, each may be recommending a different number of solar panels. Who's right? Use this information to evaluate information you're given regarding how many panels your solar system should include.

Why Do Bids Differ Between Solar Companies?

If you're shopping for solar in the Coachella Valley and you have proposals from two different solar companies, it's quite possible that they could differ in regards to the number of solar panels they recommend. For an example, let's say one is for 31 panels and one is for 25. Yet they both claim they have the right amount for my electricity. How can that be?

It’s likely that you have quotes with two different types of solar panels. One is from a company with conventional panels that are perhaps 290 Watts each and one from a company with a higher efficiency panel like SunPower at probably 360 Watts. If you multiply the number of panels by the Watts each one produces, you’ll get the total number each solar array will produce. In this case, the system with lower wattage and 31 panels will give you about 8,990 Watts (31 x 290) and the SunPower system will be 9,000 Watts (25 x 360).

How Do You Choose the Right Solar Array for Your Home?

At Renova Energy, we believe a smaller solar array is always more attractive. It goes in faster and there are fewer penetrations in your roof, if that’s how the panels are anchored. Why would you want more panels on your roof when you can produce the same amount of power with fewer panels?

Fewer panels also means that each panel can be placed in the most effective location on your roof. If you need a lot of panels to meet your energy needs, some of them may end up in locations that aren’t optimized for solar, which could mean needing even more panels to compensate.

Degradation Is Also Important to Consider

After you receive an initial wattage calculation, don’t forget to ask about degradation. That’s how fast each panel will lose efficiency over time. Chances are, the lower wattage panels will lose efficiency faster, which means your solar array won’t produce as much power over its lifetime. SunPower panels are guaranteed to still produce 92% of their power at the end of 25 years – a pretty amazing number, which is due to the ultra slow rate at which they lose efficiency.

And if you're comparing other items, also ask about the warranty to ensure it's a comprehensive 25-year agreement that covers labor and parts.

Renova Energy is the Coachella Valley’s trusted solar energy supplier. As a SunPower Elite Dealer, we offer the #1 solar products on the market to ensure you receive the clean, reliable energy you deserve. Call now!

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