As we’ve mentioned in our last blog, solar panel efficiency isn’t as important as how we think it is. Instead of a mechanical term, it’s more of a marketing gauge that companies use to price and market their solar panels.

But if solar panel efficiency isn’t that essential, what should you be looking for in a solar panel for your house? If you have the same question, then this blog is for you!

What should you look for in a solar panel instead of efficiency?

The importance of power production has previously been addressed. You’ll need fewer solar panels with a higher power rating to get the required system size. 

Additionally, we advise looking into the panel’s warranties, particularly the performance warranty. You may find out from the performance warranty how much electricity the panel will be able to produce as it ages. In general, you want a panel with a 25-year linear performance warranty and a deterioration rate of no more than 2% in the first year and no more than 0.5% for the remaining years of the contract. 

Examine the ratings for temperature coefficient and power tolerance as well. You can determine how the panel will function in actual use from both of these specifications. Look for temperature coefficient values between -0.3% and -0.5% per degree Celsius and power tolerance ratings between -0/+5%. 

You may learn more about the temperature and power tolerance coefficients operation here. 

Of course, while picking panels, you should consider the system’s cost. Don’t only choose the installation with the highest-efficiency panels; request many quotations from other solar installers to get a sense of what different kinds of panels cost in your region. 

Instead, look at the warranties and performance requirements for the other systems you were quoted. They may be as effective at eliminating your power bill and cheaper.

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