SolarWorld reviews

SolarWorld solar panels: the complete review

SolarWorld, headquartered in Bonn, Germany, is one of the world’s largest manufacturers of solar panels and a popular equipment choice for many U.S. homeowners. Whether you’re trying to decide between SunPower vs. SolarWorld solar panels or simply evaluating your solar PV options, thoroughly reviewing the product options available to you is the best way to be confident in your solar investment. EnergySage’s SolarWorld reviews take a look at the technical specifications of SolarWorld solar panels to evaluate how they compare to other manufacturers on the market.

How SolarWorld solar panels compare to other panel manufacturers

There are four key metrics that you should review as you evaluate solar panel quality: efficiency, performance, warranties, and price. EnergySage has developed SolarWorld reviews for each metric to help make your solar decision easier. We’ve also created a comparison of SolarWorld solar panels against other leading panel manufacturers that are frequently featured in offers to homeowners and businesses shopping for solar on the EnergySage Solar Marketplace.


The term “solar panel efficiency” refers to how well a solar panel captures sunlight and convert it into useful electricity. In the same conditions, a high-efficiency solar panel will produce more electricity than a lower-efficiency panel of the same size. For this reason, a higher efficiency rating is generally preferable.

The efficiency of your SolarWorld solar panels will vary depending on the specific model that you choose for your system. SolarWorld panel efficiency can range anywhere from 14.9% on the lower end to 17.6% on the high end. While there are higher-efficiency panels on the market, SolarWorld solar panels can be a cost-effective choice for many homes – high-efficiency solar panels like SunPower typically come with a premium price tag and aren’t necessary unless you need to pack a lot of solar production into a small space.

solarworld solar panel efficiency


Performance (Temperature Coefficient)

For this portion of EnergySage’s SolarWorld reviews, we use the temperature coefficient to evaluate solar panel performance. The temperature coefficient is an indicator of how well your solar panel can handle less-than-ideal conditions. Solar panels, like other electronic equipment, perform better when they are kept cool (ideally around 25° C/77° F). The temperature coefficient tells you how much your panel’s performance will change during hot sunny summer days.

For every degree above 25° C (77° F), your solar panel’s electricity production will decrease by its temperature coefficient. For example, SolarWorld’s Sunmodule Plus SW295 Mono panel has a temperature coefficient of -0.41%/°C. This means that, if the panel’s temperature increases by one degree from 25° C (77° F) to 26° C (79° F), its electricity production will decrease by 0.41%. If its temperature increases all the way to 35° C (95° F), electricity production will reduce by 4.1%.

Your solar panels will likely see more than a few hot and sunny days over the course of each year, so ideally, they will have the lowest temperature coefficient possible. As you can see in the graph below, SolarWorld’s solar panels offer fairly standard temperature coefficient ratings, ranging from -0.43 to -0.40.

solarworld solar panel temperature coefficient


Whether you’re buying a TV, a car, or solar panels, the manufacturer should stand behind their product with a strong warranty. A solar panel’s materials warranty (sometimes referred to as the product or equipment warranty) is a guarantee from the manufacturer that they will replace your panel if it fails as a result of manufacturing defects or environmental issues.

Most solar panel manufacturers offer a 10-year materials warranty, while higher-end solar panels come with a 12, 15, or even 25-year warranty. SolarWorld offers a standard 10-year warranty for panels manufactured through 2016, and a 20-year warranty for all new panels.

solarworld solar panel warranty

How much do SolarWorld solar panels cost?

For many homeowners, the final decision around the solar equipment you choose rests on cost. The total price you pay for a solar energy system with SolarWorld panels will vary depending on the other equipment (such as inverters and mounts) used in the installation, as well as the characteristics of your roof. To identify the range of prices for SolarWorld systems, we analyzed quotes from installers on the EnergySage Solar Marketplace that included SolarWorld solar panels. Most SolarWorld systems are typically priced between $2.73 and $3.11 per watt – comfortably in the mid-range for solar.

SolarWorld solar panels compared to competitors

MeasureSolarWorld solar panel rangeSolarWorld solar panel averageAll manufacturers average
Efficiency (%)14.9% - 17.6%15.70%16.87%
Temperature Coefficient-0.43 to -0.40-0.42-0.40
Warranty20 years20 years10 years
Price ($/Watt)$2.73-$3.11$2.92$3.05

This means that, for an average 6 kW system, your gross cost would be anywhere from $14,950 to $19,050. Additionally, most homeowners end up paying much less than the total gross cost. There are plenty of solar incentives and rebates to help you reduce upfront costs, including the 30 percent federal tax credit for solar.

SolarWorld solar panels are some of the most popular products on the EnergySage Solar Marketplace, and for good reason. They offer a good selection of products with standard efficiency, performance, and warranties for a reasonable price. SolarWorld also manufactures their panels in the United States and Germany, an important criterion for many solar shoppers, and was founded way back in 1988. Overall, there are plenty of compelling reasons to consider SolarWorld panels for your home solar installation.

How to find the best price on SolarWorld solar panels

The best way to determine whether SolarWorld solar panels are the best solar panels for your home is to review multiple quotes with different solar equipment options before making a decision. When you compare all of your options on the EnergySage Solar Marketplace, you’ll find the right combination of price and quality that meets your needs. Many of our qualified, pre-vetted solar installers offer SolarWorld solar panels in their quotes to EnergySage users. When registering, simply note in your profile that you’re interested in receiving quotes that include SolarWorld solar panels for your home.

Other EnergySage solar equipment resources


NOTE: the data in this piece was last updated January 2019 and is updated every 6 months.

One thought on “SolarWorld solar panels: the complete review

  1. Boitumelo

    How can one run the solar here in Kimberley, Northern Cape, South Africa – the province is vast and also hot as if we’re manufacturing the heat. I will be more happy if a solar manufacturing panels and installation hub can be launched here in Kimberley as well as to part with skills. Our electricity supplier can buy it from the community.

    Hope to hear from you soon

    Boitumelo Sesenyamotse

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