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What are the most efficient solar panels on the market?

March 1, 2019

For those looking for the most efficient solar panels for their solar energy system, the first thing you need to know is how to compare efficiency metrics for different manufacturer brands. Solar panel efficiency is one useful metric used to determine how much power a solar panel produces compared to other products.
 

Solar panel efficiency: what you need to know


Simply put, solar panel efficiency (expressed as a percentage) quantifies a solar panel’s ability to convert sunlight into electricity. Given the same amount of sunlight shining for the same duration of time on two solar panels with different efficiency ratings, the more efficient panel will produce more electricity than the less efficient panel.

In practical terms, for two solar panels of the same physical size, if one has a 21% efficiency rating and the other has a 14% efficiency rating, the 21% efficient panel will produce 50% more kilowatt hours (kWh) of electricity under the same conditions as the 14% efficient panel. Thus, maximizing energy use and bill savings is heavily reliant on having top-tier solar panel efficiency.

Many consumers and people in the solar industry consider solar panel efficiency to be the most important criterion when assessing a solar panel’s quality. While it is an important criterion, it’s not the only thing to consider while you evaluate whether to install a particular solar panel. Solar panel efficiency relates to the ability of the panel to convert energy at a low cost and high supply rate.

Most efficient solar panels: the top 5

 

Here are the top five best solar panel manufacturers in 2019 ranked based on the highest efficiency solar panel they have to offer:

SunPower (22.2%)
LG (21.1%)
Solartech Universal (20.2%)
Silfab (20.0%)
Solaria (19.4%)


The most efficient solar panels on the market today have efficiency ratings as high as 22.2%, whereas the majority of panels range from 15% to 17% efficiency rating. SunPower panels are known for being the most efficient solar panel brand available on the market. Though they will come with a higher price tag, SunPower will often be the consumer favorite for anyone concerned with efficiency as a primal metric of interest. However, check out the table below to learn about all the top brands and the most efficient solar panels you can get your hands on.

Looking for the most efficient solar panels on the market? Get free solar quotes on the SolarMart Online Store for top quality solar equipment.


Maximum Production or Maximum Offset 

 

If your goal is to maximize the amount of electricity your system produces or want to ensure you buy the least amount of electricity from the utility, but the amount of roof space you have available to install solar panels is limited in size, you may choose to install higher efficiency solar panels. This will ensure you get the maximum production from your solar panel system.

Cost vs. Value 

 

More efficient solar panels tend to cost more than their less efficient counterparts. You may want to analyze whether that upfront cost difference is justified by the increased saving achieved by generating more electricity over the lifespan of your solar energy system. Increased electricity production means you have to buy less power from your utility and in some states, may also generate higher SREC income. The SolarMart Online Store makes it easy for you to easily compare your savings from solar panels that vary in their efficiency ratings and if their premium price is justified. 


How efficient are solar panels? Efficiency comparison tables


The two tables below present different views of the solar panel efficiency characteristics of the leading manufacturers who sell solar panels in the United States. Most panel manufacturers produce several solar panel models which range in efficiency ratings. The leading brands in this category will be those that utilize high-efficiency solar cells such as LG and SunPower (who have battled back and forth for the world solar efficiency record) who are widely considered to be the top panel brand on the market for solar efficiency. However, it’s important to understand the difference between setting a maximum efficiency record and maintaining strong and consistent average solar energy efficiency ratings. Therefore, the following efficiency table breaks down the best ways to compare different solar panel options by module efficiency metrics.

Solar panel efficiency rating of PV models by manufacturer

 

 

Three Tips for Solar Shoppers

 

  • Homeowners who get multiple quotes save 10% or more

As with any big ticket purchase, shopping for a solar panel installation takes a lot of research and consideration, including a thorough review of the companies in your area. A recent report by the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) recommended that consumers compare as many solar options as possible to avoid paying inflated prices offered by the large installers in the solar industry.

 

  • The biggest installers typically don’t offer the best price

The bigger isn’t always better mantra is one of the main reasons we strongly encourage homeowners to consider all of their solar options, not just the brands large enough to pay for the most advertising. A recent report by the U.S. government found that large installers are $2,000 to $5,000 more expensive than small solar companies. If you have offers from some of the big installers in solar, make sure you compare those bids with quotes from local installers to ensure you don’t overpay for solar.

  • Comparing all your equipment options is just as important

National-scale installers don’t just offer higher prices – they also tend to have fewer solar equipment options, which can have a significant impact on your system’s electricity production. By collecting a diverse array of solar bids, you can compare costs and savings based on the different equipment packages available to you.

There are multiple variables to consider when seeking out the best solar panels on the market. While certain panels will have higher efficiency ratings than others, investing in top-of-the-line solar equipment doesn’t always result in higher savings. The only way to find the “sweet spot” for your property is to evaluate quotes with varying equipment and financing offers.

 

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