The Solar-Estimate 2019 top 5 brands of solar panels


Solar-Estimate Ranking #1

Comment: Panasonic have been doing research into solar for over 40 years and they pioneered the hetro-junction solar cell. They are one of the strongest consumer electronics company in the world and the company in which we have most faith will be there to support their brand over the long haul.

Compare Panasonic solar modules by solar cell type, by wattage and by panel efficiency
LG Solar

Solar-Estimate Ranking #2

Comment: While their Neon technology is perhaps not as amazing as they claim it is, LG scores second on our rating because they are part of a global conglomerate that values the LG brand, and I would trust them to be there for the long haul and to deal with any product defects that arise in the future.

Compare LG solar modules by solar cell type, by wattage and by panel efficiency
Canadian Solar

Solar-Estimate Ranking #3

Comment: Despite the name, Canadian Solar is a tier 1 Chinese owned solar manufacturer. It makes good quality panels at an affordable price point. The company is profitable and this combined with the fact that it scores highly on value are the reasons we rank it number 3 even though it has no particular revolutionary technology.

Compare Canadian solar modules by solar cell type, by wattage and by panel efficiency
Trina Solar

Solar-Estimate Ranking #4

Comment: A tier 1 Chinese manufacturer, they have shown commitment to quality and brand marketing. Their technology is okay but not amazing, but as with Canadian Solar they offer proven quality at a price point that makes solar attractive. They also have a reasonable balance sheet giving us confidence they will survive in this turbulent industry where others may not.

Compare Trina solar modules by solar cell type, by wattage and by panel efficiency

Solar-Estimate Ranking #5

Comment: Sunpower are an American based solar manufacturer that have captured many solar panel efficiency records. Despite sometimes overplaying the additional energy that their high efficiency X-Series panels produce, they do make excellent panels. The two reasons we don't rank Sunpower #1 are: although their panels are excellent they charge a 25% price premium for a panel that only produces around 5% more power than a panel of average efficiency with the same watt rating. They are moving manufacturing overseas to reduce cost and hopefully this helps. The second reason is they lost money in 2016 which concerns me but they still have a lot of assets on their balance sheet and so solvency is not an immediate concern.

Compare Sun Power solar modules by solar cell type, by wattage and by panel efficiency

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How does solar work in your home?

Sunlight contains useful solar energy in the form of both heat irradiance (infrared) and visible light irradiance. Two types of solar technologies have developed to use this renewable energy. The first were solar thermal panels that use the infrared solar energy from the sun to heat water. However, in the last 10 years low cost photovoltaic solar panels have been developed to turn sunlight into electricity. These solar panels are grid tied so that your house can be powered by them when the sun is out, but also remain powered by the grid at night.


What are the five best residential solar panels brands on the market today?

Our resident PV systems experts rate what we believe to be the best 5 solar panel brands on the market in the US today. Solar-Estimate has no business relationship with these companies and we have rated these panels based on consumer solar panel reviews, review of the financial position of the company and a balance between the competing objectives of getting the lowest price and getting the most efficient solar panel.


Canadian solar brand review
LG solar brand review
Panasonic solar brand review
Trina solar brand review
Sunpower solar brand review
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How many solar modules do I need to power my house?

This depends on how much electricity you use, where you live, your roof characteristics and the percentage of your power bill that you would like to eliminate.

See detailed guide: How many solar panels you need?


The solar estimator is able to estimate the size of solar system you need


What types of solar cells are used in in a typical residential solar system in the US in 2019?

The main two types of solar panels for homes are polycrystalline solar panels and monocrystalline panels. While monocrystalline solar panels produce slightly more power per square foot because they are slightly more efficient, polycrystalline panels tend to be cheaper.

monocrystalline and polycrystalline
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How much power do solar panels produce?

The amount of power that solar panels will produce depends on your location and the characteristics of your roof. In the sunniest parts of the country you can get 1500 or more kilowatt hours (kWh) per 1 kW of DC peak capacity, but in other places such as the northeast you can get as little as 1100 kWh per per 1 kW DC peak capacity.

If you enter your address into the solar calculator it will show you how much electricity solar panels produce where you live. If you have a roof that does not face south or has an unusual tilt then you may wish to use the PVWatts calculator although this does not have solar panels cost information.

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$3.10 per watt

Average cost of a Cash settled fully installed residential solar power system

$3.50 per watt

Average cost of a Financed fully installed residential solar power system

$1.67 per watt

Average cost of a solar panel kit (not installed)

$0.16 per kWh

Average cost of a Zero down PPA (Power Purchase Agreement)

Buying solar panels


How much will solar panels really cost for your home?




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Are Solar Panels worth it?

While the 30% solar tax credit exists and net metering is in place solar is typically an excellent investment for homeowners.

However, for a specific individual the answer to this questions depends on how much you spend on power, where you live, the characteristics of your roof and your views as to what is an acceptable return on investment.


Enter your details to calculate ROI and payback

Should I lease or buy solar panels?

Very few American's actually purchase their solar systems with a big wad of cash. As is the case in the auto industry, in America most residential solar consumers who have purchased solar solar for their home have either entered into a solar agreement where payments are spread over the life of the system or, if they have got a cash price from an installer, they have used some other finance method to pay this upfront price.

Read more about buying or leasing solar.


Find out if you should lease or buy solar panels
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How to understand solar panel specifications and warranties

This isn't about picking the "best" solar panel brand, it's about finding the right one for your home.


Find a solar installer near you


Does a premium price guarantee me premium quality solar modules?

In general a premium priced solar panel will have better reliability and/or efficiency than a cheaper module. However, don't be fooled into thinking a premium price will necessarily mean premium brands of equipment or premium service and workmanship. You still need to check reviews. The worst rip off merchants I have seen in the industry are those that pose as premium vendors but actually sell low quality equipment and offer poor service. These are typically the door to door sales companies that rely on getting around the kitchen table with people who have little access to comparative information.


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What are the breakdown of the costs in a residential solar power system?

Our sister site SolarReviews has a great breakdown of the actual costs that go into making up the overall cost of a solar power system.

Most people find it strange that the solar panels themselves can make up less than 35% of the overall cost of a residential solar power system. Here is a breakdown of the cost of each component in the overall provision of a solar power system.

Cost breakdown for each component in an installed solar power system

What are the best value deals available now on solar panels in my city?

On the Solar-Estimate marketplace we have over 200 solar companies that have agreed to share pricing and gives quotes to users of the site. Most of these companies are the good guys in the industry because they are happy to talk with educated consumers and happy to share their pricing with interested consumers in their service areas.

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Find the best deals on installed systems for your city


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pile of solar panels

How much does it cost to just buy the solar panels individually?

For our discussion on solar panel kits and to see pricing on solar panel kits from around the internet - click here.