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Most Efficient Solar Panels. Sunpower x22 360

Most Efficient Solar Panels. Sunpower x22 360

    Most Efficient Solar Panels

    If you have limited space and need to get the most energy for your area, then you need the most efficient solar panels for your project. People always ask me, “which panels have the highest efficiency?” or, “which solar PV panels are the best?” The truth is that solar panel efficiency isn’t as important as you might think. For most homeowners, the better question to ask is, “which panels will give me the most electricity for the best price?” You can find out how much solar might cost for your home by using our free solar calculator. But you’re here to find out the most efficient solar panels, so let’s get on with it.

    The most efficient solar panel in 2016 is the SunPower SPR-X22-360 with a 22.07% panel efficiency.

    Below is a solar panel comparison chart comparing the solar panel efficiency of all other modules rated at 360 watts like the SPR-X22-360. The 360 watt rating means that in strict laboratory conditions, these solar panels produce the same output. However, because solar panels vary in size, some end up being more efficient compared to others – meaning they can produce the 360 watts using less space (area).

    Manufacturer ID Rating Efficiency Tier
    SPR-X22-360 360
    LG360N2C-B3 360
    SNPM-GxB-360 360
    SE-H360-4 360
    TS-360-R11-02 360
    SNPM-GxB-360 SM 360
    REC360PEM 72 360
    TS-S360TA1 360
    MPE 360 AL 01 360

    Of all solar panel manufacturers, SunPower panels have the highest efficiency per surface area in real world conditions. Given a limited roof area with which to install solar panels, these are the best choice to produce the most electric output per square foot. However, this doesn’t mean that these panels will always be the best choice. Due to having record efficiencies, these panels will cost much more than other panels with slightly lower efficiencies. You should only consider paying the premium for high efficiency solar panels if limited space is a concern. If you want to see the efficiency of your solar panels, or compare almost 18,000 different modules, check out my solar panel comparison table and search or sort to see how your panel stacks up to the rest.

    Panel Efficiency is Not So Important

    All solar panels produce the same quality of electricity. What comes out the panels and ends up powering your lights, TV, and refrigerator is electricity. Your TV won’t be brighter and more glorious simply because you paid more for the solar panels. You paid more for the solar panels because you wanted to get the most electricity out of the limited space you have. This often ends up being most important for engineers building solar cars, or solar planes. Or RV owners and truck drivers who want a couple solar panels and want to get as much electricity from them as possible. Homeowners often don’t need the most efficient solar panels.

    So, if solar panel efficiency isn’t important, what is? How much it costs, of course! That’s honestly the only real question when it comes to installing solar. How much will it cost and can I afford it? So, instead of researching the most efficient solar panels, you should contact a couple local solar installers and find out how much it will cost for them to install solar on your home. As long as the panels and installation come with a warranty, it doesn’t matter which brand or type is installed. And if you install with SolarCity for 0 upfront, they will own the panels, maintain them, and make sure they’re working perfectly.

    Some solar installers will try to sell you on the fact that their panels are ‘more efficient’ than others. Don’t worry too much about efficiency. There’s a better way to compare which complete solar system is best for you. Choose the system with the best value. You can read about solar value here.

    Lastly, the easiest way to find out if solar is right for you is to contact a couple local installers and ask them for a free estimate specific for your house and needs. I recommend checking out SolarCity, the #1 solar provider in the US. You can get a free quote from SolarCity here. And another easy way to get a free quote online is from Sungevity who will send you estimates online usually within 24 hours. After that, Google local solar installers in your area and see how they compare to the big national installers. If you have any questions, feel free to shoot me a message. I’m here to help.

    • Manufacturer = Solar Company; Brand
    • ID = Specific solar module identification code; module name
    • Rating = Standard Testing Conditions Rating; nameplate rating under laboratory conditions
    • Efficiency (%) = Output per input light irradiance using STC; energy conversion efficiency; module efficiency
    • Tier = Solar Panel Efficiency Tier. 1 is highest, 5 is lowest

    Is Solar Right for You?

    Install with SolarCity for 0 upfront. They will own the panels, maintain them, and make sure they’re working perfectly. They work in these states: Click the map to request a free quote from SolarCity.

    No calls. Get a detailed online solar estimate with no phone calls from salespeople. Sungevity is a tech company helping people go solar with less hassle. Click the map to request a free quote from Sungevity.

    SunPower Defective Solar Panels 4.75M Class Action Settlement

    Top Class Actions’s website and social media posts use affiliate links. If you make a purchase using such links, we may receive a commission, but it will not result in any additional charges to you. Please review our Affiliate Link Disclosure for more information.

    This settlement is closed!

    Please see what other class action settlements you might qualify to claim cash from in our Open Settlements directory!

    SunPower agreed to pay 4.75 million under a class action lawsuit settlement to resolve claims that it sold solar panels with defective microinverters.

    The settlement benefits Class Members who purchased one or more SunPower solar modules (also called solar panels) equipped with defective microinverters and/or own a house where these modules are installed.

    The allegedly defective microinverters were installed in SunPower solar panels between July 2015 and December 2016 and carry serial numbers beginning with 4140515xxxx and 4140516xxxx. These were equipped in solar modules included in SunPower’s Equinox systems with the following model numbers:

    • SPR-E20-327-C-AC
    • SPR-E19-320-C-AC
    • SPR-E18-305-C-AC
    • SPR-X22-360-C-AC
    • SPR-X21-350-BLK-C-AC
    • SPR-X21-345-C-AC
    • SPR-X21-335-C-AC
    • SPR-X21-335-BLK-C-AC
    • SPR-X20-327-BLK-C-AC

    SunPower is a solar power company based in Silicon Valley. The company reportedly holds over 1,000 patents for solar innovation and, according to the company’s website, has been the No. 1 ranked commercial solar company since 2017.

    However, consumers who purchased solar panels from the company may have unknowingly paid for defective products.

    Plaintiffs in the SunPower class action lawsuit claim the company sold solar panels with defective microinverters. The microinverters were allegedly manufactured with a defective component from a third party; that component causes the parts to degrade prematurely, generate less power, and even stop working.

    As a result of this defect, the plaintiffs contend consumers who purchased SunPower solar panels faced financial damages due to premature product failure and increased electric utility bills. According to the SunPower class action lawsuit, the solar power company is liable for these damages.

    SunPower hasn’t admitted any wrongdoing but agreed to resolve these claims with a 4.75 million settlement.

    The settlement promises cash payments to consumers who experienced any of the following: lost or reduced power production, property damage due to microinverter repair or replacement, and/or loss of solar renewable energy credits or other incentives. According to the settlement website, payments are expected to be 173.52 per Class Member.

    The SunPower class action settlement also provides non-monetary benefits to Class Members.

    The company agreed to maintain and establish an Enhanced Customer Care Program through Dec. 31, 2021, in order to help Class Members with any questions surrounding the settlement.

    Under the terms of the settlement, SunPower also agreed to retrofit all defective microinverters. SunPower reportedly started to replace defective components in 2017. The company agreed to repair all remaining microinverters by June 30, 2021.

    The deadline for exclusion and objection was Jan. 10, 2022.

    The final approval hearing in the SunPower solar panels lawsuit settlement is scheduled for March 24, 2022.

    Class Members must submit a valid claim form by March 10, 2022, in order to receive payments from the settlement.

    Who’s Eligible

    The settlement benefits Class Members who purchased one or more SunPower solar modules (also called solar panels) equipped with defective microinverters and/or own a house where these modules are installed.

    Potential Award

    Proof of Purchase

    No proof of purchase applicable

    Claim Form

    NOTE: If you do not qualify for this settlement do NOT file a claim.

    Remember: you are submitting your claim under penalty of perjury. You are also harming other eligible Class Members by submitting a fraudulent claim. If you’re unsure if you qualify, please read the FAQ section of the Settlement Administrator’s website to ensure you meet all standards (Top Class Actions is not a Settlement Administrator). If you don’t qualify for this settlement, check out our database of other open class action settlements you may be eligible for.

    Claim Form Deadline

    Case Name

    Weiss, et al. v. SunPower Corporation, Case No. 21CV384151, in the Superior Court of the State of California in and for the County of Santa Clara

    Final Hearing

    Settlement Website

    Claims Administrator

    Microinverter Settlementc/o A.B. Data, Ltd.P.O. Box 173052Milwaukee, WI

    Class Counsel

    Shanon J. Carson EsqGlen Abramson EsqJeff Osterwise EsqAmey Park EsqBerger Montague PC

    Sophia Rios Esq Berger Montague PC

    Defense Counsel

    Darren CottrielSharyl ReismanJONES DAY

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    thoughts on SunPower Defective Solar Panels 4.75M Class Action Settlement

    ALl Legal Counsel Members Representing S.T of CA. Be aware what I believe is The Respective Electric Company’s some of them are in of The Taking actual Large Portions of Residential Generated kWh units that is of a direct Breech into that Contract between A Home Owner who Rents the Solar equipment installed that states shall be credit for every unit of kwh Generated in billing cycle. The Fact I truly believe is happening more than you may think it’s not is worth the investigating I know I have had direct conversations with my utility company I will not mention there Name here.Based on there Response of my direct conversation told me they thought I would not be quick enough to there Con that’s Tricky the first time.I later after waited some short time frame gave myself that same chance to there same response and my direct reply to answer back was with silence. Then they changed the format of there No Billing Statement. I am a Know body to them of Now Threat. Electric Company has a Mandate to store kWh on Grid they built that’s off line to be ready to meet a deadline with CA for back up Grid or a All Green Grid not sure however the pressure can at times cause something Like scoop the table credit chips from a place on that table that is not there’s for the taking. Just maybe if this true of the fact. This Not just effected us. It’s going to be huge populated residential community No brainier Class Action. Catch it before they use the grid Now is the time Numerate the Gride to find kwh MIA. Not Credited to Home Owners who Rent the Solar and or Own Solar.Note we have No Batt. Storage capability what we Generate days each day at Night all goes to the utility Co.


    If you are interested in high efficiency solar panels, here we will review SunPower solar panels

    Sunpower solar panels are the most efficient panels available in the market today. Along with the best product warranty, it is understandable that Sunpower is one of the most requested brands.


    All this comes with a price tag. Next, we go to the smallest detail, why or why not choose Sunpower.

    To evaluate a solar panel brand, you must observe some important criteria, such as:

    • Return
    • Warranty
    • Price
    • Performance as the temperature coefficient and tolerance.

    What is the Efficiency of Sunpower solar panels?

    The highest efficiency that exists in a solar panel:

    A conventional solar panel with dimensions of 1.7 x 1.0 meter can be between 250W and 320W. However, a SunPower solar panel, with smaller dimensions, has powers from 327W to 370W.

    We are going to exemplify it in a simple table, comparing some of the most efficient panels of the market that are commercialized regularly. You will see what we mean:

    Maker Model Power Dimensions Efficiency
    SunPower X22-360 360W 1,559 x 1,046 x 46 mm 22.2%
    SunPower X21-345 345W 1,559 x 1,046 x 46 mm 21.5%
    LG NeON R 360 360W 1,700 x 1,016 x 40mm 20.8%
    SunPower E20-327 327W 1,559 x 1,046 x 46 mm 20.4%
    AUO SunForte 330 330W 1,559 x 1,046 x 46 mm 20.3%
    SHARP NQ-R256A 256W 1.318 x 980 x 46 mm 19.8%
    Panasonic VBHN330SJ47 335W 1.590 x 1.053 x 35 mm 19.7%
    Panasonic VBHN325SJ47 325W 1.590 x 1.053 x 35 mm 19.4%

    The great difference of efficiency of SunPower with the others is clearly appreciated. It is the most technologically advanced cell that exists. In any case, we could also highlight the HIT cells of Panasonic Sanyo, which is also an exclusive technology with superior performance.

    SunPower Solar Panels are Different, they are simply Better

    The SunPower photovoltaic panels of the E and X series have a series of characteristics that no other photovoltaic panel has. We list some:

    • A SunPower cell has a very different design from a conventional cell. because it is made on a copper base.
    • Copper-based cells are more expensive than conventional cells, but a much more reliable and high-performance cell is achieved.
    • SunPower cells are deposited on a tough copper base with maximum durability, while conventional cells have their contacts printed directly on the cell (such as screen printing on a T-shirt).
    • The SunPower panels of the X series have a maximum annual degradation of.0.25%, so their performance is 92% at 25 years, when the conventional in the rest of manufacturers is 85% at 25 years.

    View of a SunPower cell and a conventional cell:

    The differences are not only aesthetic. Although the SunPower cell does not have front contacts and, therefore, in view is a completely “clean” and black cell, we must also highlight the enormous difference in efficiency that exists between a SunPower cell and the rest that are available today in day.

    Solar energy guarantee

    Sunpower also has no rival in terms of warranty here. Sunpower uses a very transparent guarantee for both capacity and product warranty.

    • Warranty Product : where most brands offer a guarantee level 1 10 to a maximum of 15 years in Sunpower, this is no less than 25 years! And this does it for a good reason. According to Sunpower, only 1 in 20,000 solar panels goes wrong (and what is replaced).
    • Production guarantee : together with the product warranty, the production guarantee is also unprecedented, or rather low. With a loss of 13% in 25 years. therefore, they retain 87% of their return. This is a loss of 0.5% per year. Where most brands cover around 0.7% of losses per year, 0.5% is a great improvement.

    If the solar panel no longer meets one of these two requirements, the solar panels will be replaced free of charge. Only in case of abuse, improper installation or when the solar panel has been moved from its original location.

    What is the price of Sunpower solar panels in 2019?

    Sunpower solar panels are, so to speak, one step higher than the traditional brands of Tier 1 solar panels. This is also reflected in the price.

    Sunpower is practically the most expensive brand of solar panels, even in € / Wp. But the unprecedented warranty on the product and power means that the price is justified.

    In general, a Sunpower solar panel is, on average, 50% more expensive than the other Level 1 brands.

    Is the price justified? As far as we are concerned, yes. Sunpower invests heavily in research and development and represents innovation.

    Because solar panels also get much better performance, up to 45% more than other Level 1 brands, it is ideal for installations where there is little space available due to a small roof or a part in the shade. This also means less assembly and material costs.

    What is the performance of SunPower solar panels?

    You can easily see the performance of a solar panel when viewing a solar panel data sheet. We evaluate the performance of Sunpower solar panels based on the temperature coefficient (Pmax) and tolerance.

    Temperature coefficient

    The X-21 series, the best Sunpower segment, has a Pmax of.0.30% / ° C. Everything below.0.30% / ° C is recommended. For example, a loss of 9% occurs at a temperature of 25 degrees (55 degrees in solar panels), while with other panels this is quickly 15%.


    No Sunpower solar panel has a negative tolerance. The X-21 series has a positive tolerance of 5%. This means that solar panels yield up to 5% better than indicated. With a series of 345 watts X21 this is a bonus of more than 17 watts!

    Solar energy solar panels

    The Sunpower range consists of 2 series:

    Sunpower series x

    This is the Sunpower masterpiece, especially the X-22. The X series is the result of 25 years of research. The X series consists of Maxon solar cells that are manufactured with as little metal as possible. As a result, they absorb more sunlight and achieve a performance of not less than 21.5%.

    The X series has been on the market since 2013 and, since then, there is no single brand of solar panels that approaches the quality of this solar panel.

    Because the efficiency is so high, you get up to 45% more electricity from a solar panel than any other brand. The X-21 is entering

    X-20 : the first panel of the X series is the X-20. With a yield of 20.3%, this monocrystalline solar panel is still among the best solar panels today, although it was produced in 2010. The panel supplies 327 W of power and has a tolerance of.3% / 5%.

    X-21 : The X-21 model is the successor of the X-20. With a yield of 21% and a positive tolerance of 5%. There are 2 versions, the X21 Signature Black with a power of 335W per panel and the standard version of X21 with a power of 345W.

    The Signature Black panel is often chosen because of its design, which looks much tighter and is better suited to dark ceilings. The X-21 won the most efficient solar panel award in 2012.

    The solar cells in the X-21 panels are built on Maxeon technology. This solar cell is built from a solid copper frame, which makes it virtually impossible for corrosion to occur or for the material to degrade.

    most, efficient, solar, panels, sunpower

    X-22 : the X-22 model is Sunpower’s top solar panel. With an unprecedented efficiency of 22.1% and a positive tolerance of 5%, it offers no less than 360 watts of power per panel.

    The Pmax is also unprecedentedly low with.0.299% / o C. Like the entire X series, the panel comes with a product warranty of 25 years and a power guarantee of.0.4% for 25 years.

    E-20 : The Sunpower E-20 is a monocrystalline solar panel with Maxon Gen II solar cells. Like all Sunpower solar panels, performance is high, with no less than 20.4%. An E-20 panel provides 327W of power, which makes it an ideal solar panel when the available space is not large.

    Installers of solar panels Sunpower.

    Many installers today offer Sunpower premium solar panels in their range. Some installers consciously choose to work alone with Sunpower, with other installers this is part of their assortment, which usually contains 4-5 marks. Below are some reliable Sunpower installers.

    Sunpower solar panels reviews

    The views expressed by reviewers are theirs alone, and do not necessarily reflect those of Peacock Media Group, which makes no representations as to the accuracy of the reviews. For our full disclaimer and further information, see our Terms of Use and our Review Guidelines.

    About Sunpower, Solar Panels

    SunPower is an American firm that lends its name to high quality solar panels; with most models now being produced through its spinoff Maxeon Solar Technologies. The company’s products are widely considered among the best available.

    Sunpower Maxeon solar panels have the highest efficiency currently on the market, are likely to be the best at tolerating partial shade. and they have a 40 year product warranty in Australia (see further notes on warranty below). In addition, SunPower panels are corrosion resistant, which makes them suitable for installation anywhere in Australia.

    Maxeon have an Australian office in Melbourne.

    Production Capacity And Output

    At the start of 2018 SunPower had 1.2 gigawatts of solar cell manufacturing capacity and 1.9 gigawatts of solar panel manufacturing capacity. In 2019, the company shipped 2.5 GW of modules, representing 80% growth over 2018.

    Current production capacity isn’t clear, but was expected to be boosted significantly under Maxeon. In April 2021, Maxeon Solar Technologies said it planned to use existing facilities to quickly ramp 1.8 GW of new capacity, followed by another 1.8GW at a new facility. Whether that materialised isn’t clear.

    Manufacturing Locations

    SunPower is as American as Apple pie and so is majority owned by a French oil company. This makes sense because the French were eating Apple pies long before Americans ever did.

    SunPower’s headquarters are in San Jose in California. They abandoned manufacturing in the United States for a long time but then resumed at a plant they bought from SolarWorld Americas in order to avoid Trump’s solar panel tariffs. But in January 2021, SunPower announced it was closing its Hillsboro plant. This means Maxeon is now manufacturing all SunPower panels models aside from the Performance (P) Series.

    Maxeon has manufacturing capacity in Malaysia, the Philippines and Mexico. SunPower entered into a joint venture to produce their P series panels in China.

    Company History

    SunPower was founded in 1985 by Richard Swanson, who was responsible for Swanson’s Law. It states that for every doubling of production capability, the cost of solar panels falls by 20%. Despite ups and downs in prices, it has proven to be roughly accurate and I hope the effect will continue into the future.

    As it has managed to stick around for 37 years so far, SunPower is one of the oldest solar panel brands in existence.

    However, in November 2019, SunPower announced it would spin off much of its solar panel manufacturing into a new company – Maxeon Solar Technologies. That process was completed in August 2020 and now the company’s panels aside from the P Series are marketed under the name SunPower Maxeon.

    SunPower Maxeon’s 40 Year Replacement Product Warranty

    In February 2022, Maxeon Solar Technologies announced the product and performance warranty on panels sold under SunPower Maxeon brand in Australia had been extended from 25 years to 40 years. In terms of the Sunpower Maxeon 5 and 6 AC, the 40 years only covers the panel, while the integrated microinverter is covered under Enphase’s 25 year warranty.

    It should be noted the product warranty for SunPower P series panels (i.e. non-Maxeon branded) is still 25 years.

    Maxeon’s product warranty (and that of the SunPower P Series) undertakes to either repair, replace, or refund the purchase price of the defective PV modules. It used to be that all SunPower panels were covered by a full replacement warranty, rather than the company also having repair/refund options.

    Panel Reliability

    While this figure is now out of date, SunPower has previously said their panel failure rate is only 1 in 37,000. Hopefully it’s even better now, although I know some panels have been replaced under warranty. Because the large majority of their panels were well under 25 years old at the time, this doesn’t mean there is only a 1 in 37,000 chance of a panel failing during its 25 year warranty period, but it still suggests they are very reliable.

    SunPower Maxeon Solar Panels Resist The Effects Of Heat

    SunPower panels suffer considerably less decrease in efficiency due to the effects of heat than the average panels. Their coefficiency of Pmax ranges is as little as.0.29% depending on the model, while the average is around.0.35%. This is how much their output is decreased by for each degree celcisus the panel temperature is above 25 degrees. Note that the temperature of panels in the sun can be much higher than the air temperature and can reach 65 degrees on hot days.

    SunPower Panels Tolerate Partial Shade Well

    Partial shade can cause a major reduction in the performance of solar cells as one badly performing solar cell can drag down the performance of others, so just one bird poop can have a major effect. But SunPower used various technologies to minimise its impact, and that has continued under Maxeon manufacturing.

    SunPower Had Financial Difficulties

    SunPower had been experiencing financial difficulties, posting significant losses in 2015, 2016, 2017, 2018 and 2019.

    For the fiscal year 2019, SunPower’s assets and liabilities were almost equal, which is not a good situation to be in. Their financial position was hurt by falling solar panel and also President Trump’s US solar tariffs.- despite SunPower winning an exemption.

    most, efficient, solar, panels, sunpower

    There was speculation that SunPower would go bankrupt, but the recent move to shift all solar panel manufacturing to Maxeon may play out well.

    But even if I was certain SunPower wouldn’t be around in the future to honour their warranties, I would still be fine with installing them on my roof because their high reliability means the chance of me needing their warranty should be extremely small.

    Warranty claim procedure for orphaned SunPower customers

    If you have purchased Sunpower panels from a solar installer that has gone out of business, the responsibility for warranty claims falls to Sunpower or Maxeon, depending on the type of solar panel installed. They can be contacted on 1800 786 769, and will arrange for an installer in their network to diagnose and rectify any problems with the panels. with labor costs involved covered by the warranty.

    My Recommendation

    I would have no problem installing SunPower Maxeon panels on my roof, and this would be the case even if I expected SunPower or Maxeon to go bust and not be around to honour their warranties.

    But while SunPower panels are very high quality, they do carry a hefty premium and so it will be necessary to decide if they are worth the extra expense.

    SunPower is also very popular with Australian installers. In the SolarQuotes Installers’ Choice Awards, SunPower was voted second in the best solar panels in 2023 category, and also achieved second place for best after-sales support.


    Penrith Solar Centre use SunPower Performance panels, which is a high grade solar panel. We wanted high quality performing solar panels. Bought From: Penrith Solar Centre Show additional information

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