Category Archives: Selecting a Solar Panel Manufacturer

What are the most efficient solar panels on the market?

For those looking for the most efficient solar panels for their PV system, the first thing you need to know is how to compare efficiency metrics for different manufacturer brands. Simply put, 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.

most efficient solar panels on the market energysage

As the race for the most efficient solar panel continues, it’s important to understand how more efficient panels could mean much bigger solar savings for the everyday consumer.

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 top tier solar panel energy efficiency.

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Silfab solar panels: the complete review

silfab solar panel review

Silfab is a Canada-based solar photovoltaics (PV) manufacturer offering monocrystalline and bifacial solar panels to customers throughout the world. The company was founded in 2010 and is one of the few major solar panel brands to manufacture its products in North America. Silfab is the sixth most popular brand in offers to homeowners and businesses shopping for solar on the EnergySage Solar Marketplace.  Continue reading

What is the average solar panel failure rate?

solar panel reliability failure rate

A common concern for many homeowners installing solar is their solar panel failure rate. Going solar is a financial investment, and it is important to know that your panels will continue to work reliably well for many years. In this article, we will examine solar panel reliability and possible reasons why a solar panel could perform below expectations.

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Are Chinese solar panels good quality?

chinese solar panel manufacturing

When homeowners are considering solar offers on the EnergySage Solar Marketplace, we often hear questions about a solar panel’s manufacturer origin and whether it’s a good idea to choose Chinese panels for an installation. This is a common question as the latest estimates indicate that China is manufacturing roughly 70% of the world’s solar panels today – a dominant market share and a clear indicator of China’s key role in the global solar industry. China has a significant impact over worldwide solar trends like pricing, warranties and manufacturing practices. For example, the 80% decline in worldwide solar prices between 2008 and 2013 occurred largely due to improvements in manufacturing costs in China. And because China is such a major player in solar, many U.S. homeowners are asking “should I choose Chinese solar panels and will it match the quality of other top brands?” In this article we’ll break down pricing, quality and brand influence of Chinese solar panels.

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SunTegra solar shingles: a solar roof tile option for your home

suntegra solar shingles

Homeowners across the country have their eye on Elon Musk’s Tesla solar roof, a much-heralded innovation for the solar energy industry. However, there are already roof-integrated solar panels available on the market, also known as solar shingles. SunTegra is one of two major companies producing and installing solar shingles in the United States.

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REC Solar panels: the complete review

rec solar panel review

REC Group is Europe’s largest manufacturer of solar panels, and has offices in Europe, the United States, Asia, and Australia. The company was founded in Norway in 1996 and manufactures its solar panels in Singapore. REC Solar panels are an increasingly popular option in quotes to shoppers comparing solar offers on the EnergySage Solar Marketplace.

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Canadian Solar panels: the complete review

Canadian Solar is one of the world’s largest manufacturers and installers of solar panels and operates on six continents. The company was founded in 2001 and manufactures its solar panels in Canada, China, Indonesia, Vietnam and Brazil. Canadian Solar panels are one of the most frequently quoted solar panel brands in quotes to solar shoppers comparing their options on the EnergySage Solar Marketplace – only LG and SolarWorld are more popular.

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Renogy solar panels: the complete review

Renogy solar panel review

Installing solar panels is becoming a home improvement project that any homeowner can take on. Now that you can buy solar panels off of Amazon and eBay, you may even be considering installing a home solar energy system yourself. A popular DIY option is to purchase a solar panel kit from Renogy, a California-based company that manufactures solar panel kits for DIY solar installations. Many solar shoppers comparing their options on the EnergySage Solar Marketplace also explore their DIY solar options – but before you make a home solar purchase, we recommend you learn more about how Renogy panels compare to other brands.

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Comparing Solar Warranties: SunPower vs. Canadian Solar vs. SolarWorld vs. LG vs. Panasonic vs. Hyundai

SunPower, Canadian Solar, SolarWorld, LG, Hyundai solar panel warranty

When you compare your solar panel options from leading companies like SunPower, Canadian Solar, LG, Hyundai and SolarWorld, one of the biggest factors to consider is the solar panel warranties offered with their products. Solar panels come with two main warranties attached: the materials warranty, also known as the product warranty, and the production warranty.

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What to Know About a Solar Panel Warranty

What is a solar panel warranty?

A solar panel has two warranties: a performance and equipment guarantee. A solar panel’s performance warranty will typically guarantee 90% production at 10 years and 80% at 25 years. An equipment warranty will typically guarantee 10-12 years without failing. SunPower offers the best warranties.

A solar panel’s product warranty insurance covers the integrity of the panel itself, and protects you against problems such as manufacturing defects, environmental issues, premature wear and tear etc. As with most warranties, a longer period is generally more advantageous to you, if you own your solar panel system. When evaluating a solar panel warranty and its manufacturer, the two most important factors on which you should focus are:

1. Product (or materials) warranty, and
2. The performance warranty
We’ll address both of these in this article as we break down our process for finding the best solar warranties offered by manufacturers.

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