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Axitec 550W Solar Panel 144 Cell Bifacial AC-550MBT/144US Assembled in the USA

$230^.75

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(80 ratings)

Q&A

SpecificationCompareSee all
Price per Watt$0.42
Rated Power Output 550 W
Voltage (VOC)50.2V
Number of cells144
Cell TypeMonocrystalline
Attachments
Datasheet

Customer reviews & Questions

Verified buyer reviews

Reviews (80)
Questions (2)

Charles F

07/22/2025

Excellent panels! Performance is great in WI, USA. Of the 12 i ordered, 1 came damaged and A1 was awesome in sending a replacement!

carlos

07/15/2025

five weeks use solid voltage curious how winter goes but happy so far

PAUL Walker

01/11/2025

Efficiency solid around 21 percent in my tests decent

liam

09/06/2024

works great i just wish it came in black frame

emma price

06/01/2025

still make juice on cloudy days?

A1 SolarStore

Definitely — the half-cut, bifacial design keeps voltage up and harvests scattered light, so production only dips — not disappears — when skies turn gray.

ANGELA BROWN

03/05/2025

Frame color options

A1 SolarStore

This model comes with a silver anodized frame

Specification

Length	89.68in
Width	44.64in
Price per Watt	$0.42
Rated Power Output	550 W
Voltage (VOC)	50.2V
Maximum String Voltage	1500V
Number of cells	144
Cell Type	Monocrystalline
Rated Efficiency	21.29%
Connector Type	IP68, Staubli MC4
Frame Color	silver
Dimensions LxWxH	89.68 x 44.64 x 1.38 in
Weight	61.73 lbs
Pallet Qty	31
Manufacturer	Axitec
Manufacturer Part #	AC-550MBT/144US
Operating Temperatures	−40°F to +185°F
Scope of Application	Solar Panels for Boats Solar Panels for Buildings Solar Panels for Home Solar Panels for RV
Use	Commercial Grid-Tie Off-Grid Residential
Warranty	15 years of manufacturer’s warranty and 25 years of performance guarantee

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FAQ

How much is shipping and how long is delivery?

Our standard shipping charge is $250 for up to 11 panels and it is increased by $25 for every 4 additional panels. In the event, the product is only available on East or West coast custom quote will be sent to you before the order is processed. Normally, we are able to deliver solar panels within 7 business days.

What is the difference between low price panels and top price panels?

With top tier solar panels, you pay for the brand name, proprietary new technology, higher energy output, and better warranty support.

What are the dimensions of the panel?

Please refer to the product datasheet on the product page. We have a datasheet for every product we sell.

How long is the warranty on the panel?

In general, manufacturers provide a 25 year-long performance warranty and a 10 year-long equipment guarantee. Some manufacturers offer 12-15 years of warranty. More information is available in our warranty support section.

Which panels do you recommend for RV, marine?

We recommend Panasonic and Mission Solar panels for smaller systems as their high energy output and excellent craftsmanship guarantee years of service.

Can this panel be used with a 12v system?

Any of our panels can be used for a 12v system with a properly selected inverter and charge controller.

Can I pick up this panel from your fulfillment center to save on shipping?

Yes, we can set up a pick up at a local distributor. Please call to discuss options and stock availability.

How do I connect these panels?

To achieve the best system efficiency, panels should be connected in series to create higher voltage.

How many panels do I need?

This number is determined by your average energy needs. Depending on the type of panels and energy consumption, you might need anywhere from 12 to 45 solar panels. Remember, the more panels you install the more energy you will get.Please use our solar calculator to estimate your energy consumption and plan on building a solar system that will exceed your energy needs by 25%.

How do I build a solar system?

Please use our solar calculator to estimate what equipment you need. Choose your panels, microinverters, inverters, and solar batteries if necessary.Please note that we do not offer solar system design or installation.

How do solar panels compare?

Solar panels differ by power output, voltage, connection type, size, efficiency, and weight. Some solar panels might be sold together with microinverters as a set.

Can I build a solar system by myself as a Do It Yourself project?

Yes, it is possible if you understand what solar equipment you need and how to connect it together. However, please be mindful that handling your own electrical work without having proper experience might cause life-threatening injuries. Please contact a certified electrician if you do not possess appropriate electrical skills.

Can I connect and charge my solar panel battery directly with the solar panel?

We do not recommend using the solar panel without the charge controller. Using solar panels without the charge controller might damage the batteries.

Can I drill holes into the aluminum frame for mounting?

We do not recommend drilling any new holes to the aluminum frame of the panel as it could damage the internal circuit and solar cells. (Also, any modification to the panel will void the warranty). We recommend only using the pre-drilled holes for mounting.

Do solar panels require maintenance? Can I wash my solar panel?

Solar panels generally require very little maintenance. We recommend cleaning the solar panel with water, glass cleaner (Windex) and microfiber cloth.

Will my panel produce power in an overcast condition?

While solar panels require sunlight to generate solar energy, they will still work in cloudy weather. Even on a cloudy day, solar panels will produce energy just not as much.

Will my panels produce power if covered with snow?

Solar panels cannot produce electricity if covered with snow.

What is the best direction for a solar panel to face?

The best direction for a solar panel to face is the South

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About product

Among the newest offerings of Axitec, AC-550MBT/144US is part of the AXIbipremium XXL HC MT series. These panels use state-of-the-art technology to achieve high efficiency and dependability. This panel takes full advantage of the Passivated Emitter Rear Contact (PERC) technology that allows it to capture up to 12% more energy. All thanks to a reflective layer on the back. This design maximizes the number of photons absorbed by solar cells.

The use of half-cut cell technology is an additional perk. The solar cells of AC-550MBT/144US are half the size of those found in standard panels. Major advantages include reduced power consumption, extended life and enhanced efficiency in low-light conditions. As a result, the panel achieves an impressive efficiency of 21.29%. And while conventional panels use only one side to absorb photons, bifacial modules employ both sides at the same time. Thanks to the technology, this model can be up to 30% more efficient. Axitec provides 15 years of manufacturer‘s warranty and guarantees that after 25 years, performance will be at 85% or more.

550 W power output
144 half-cut PERC cells
21.29% efficiency
1500 V DC maximum system voltage
Stäubli MC4 connectors
15-year manufacturer‘s warranty and 25-year performance guarantee

More energy and efficiency

The PERC technology further improves an already excellent efficiency of 21.29 percent. A reliable PID resistance and a unique glass lamination were added by the maker, which ultimately produced a model that was effective and extremely durable. AC-550MBT/144US produces 550 W of power under typical test settings.

Keeping cool in hot weather

Even at high temperatures, AC-550MBT/144US remains efficient. It loses just -0.35% efficiency for every 1.8°F over 77°F, letting you make the most of the sunniest hours.

High quality standards

Axitec stringent production requirements include various tests to guarantee high quality. The facilities are highly automated, allowing the manufacturer to maintain high standards while keeping warranty claims to a minimum.

Low degradation for a longer lifespan

These panels will lose no more than 3% of their power output in the first year of service. From the 2nd year to the 25th year, the average annual power decline will be no more than 0.5%. The module retains over 85% of its original output after 25 years. Guaranteed by Axitec.

A panel that can handle hail, wind and snow

The 1.38" frame made from anodized aluminum alloy and a layer of protective tempered glass make this module resistant to the foulest of weather. The front side of the modules can resist a 5400 Pa load, and the back side 2400 Pa.

Size

89.68" x 44.64" x 1.38"

Weight

61.73 lb

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Authorized Axitec Distributor

Authorized Distributor Certificate

Genuine Products: You’re getting the real deal, backed by the manufacturer’s warranty.
Exclusive Offers: You can access promotions, discounts, or bundles that are only available through authorized distributors.
Competitive Pricing: We offer the best prices because we source directly from the manufacturer, with no middlemen driving up costs.

Overview
Articles
FAQ

AXITEC Solar Panels

German-engineered solar panels with 22-23% efficiency and industry-leading 30-year warranty

AXITEC Energy stands as a proven European solar manufacturer, founded in 2001 with global headquarters in Böblingen, Germany. This smaller German solar panel brand produces highly efficient and powerful panels with pricing that falls within the mid-range of the industry, leaning slightly towards the cheaper side of the market. With approximately 7 gigawatts of the company's panels installed worldwide and production capacity of 2 GW annually, AXITEC has established itself as a reliable choice for both residential and commercial solar installations.

AXITEC maintains an engineering and design team based in Germany, with production taking place across Asia and Europe. The company has maintained an active presence in the U.S. since 2013, with their subsidiary Axitec Solar USA operating from New Jersey with warehouses in California.

Why Choose AXITEC Solar Panels?

⚡

Performance & Efficiency

AXITEC panels achieve above-average efficiency rates ranging from 22% to 23%, placing them among the higher-end manufacturers. Their panels shine with up to 22% efficiency, standing tall among industry leaders. Even under summer heat, AXITEC panels deliver steady performance thanks to their competitive temperature coefficient ranging from -0.44 to -0.26%/°C.

🛡️

Warranty & Reliability

AXITEC offers an excellent warranty extending to 30 years for both product and performance, surpassing the industry standard. These German-engineered panels are known for their low degradation rate, losing only about 0.4% of their power output per year. The 30-year linear performance warranty stipulates a minimum 87.4% of nameplate capacity at the end of year 30.

🏗️

Product Range & Applications

AXITEC offers a comprehensive product line, including options for residential and commercial applications, as well as bifacial, weather-resistant, and all-black modules. One standout feature is their bifacial design - unlike traditional panels that only capture sunlight from the front, bifacial panels harness energy from both sides, delivering up to 25% more output in diffused light conditions.

💰

Cost-Effectiveness

Solar energy systems using AXITEC solar panels generally cost between $2.00-$2.60 per watt before incentives, placing them well below the average solar panel cost of roughly $3.00 per watt in the United States. Homeowners can expect costs between $2.17 to $2.83 per watt, translating to $13,020 to $16,980 for a 6 kW system, which could drop to $9,114 to $11,886 with tax credits.

AXITEC vs Competition - Technical Comparison

Feature	AXITEC 450W	Canadian Solar 550W	Jinko Solar 575W	LONGi Solar 570W
Power Output	450W	550W	575W	570W
Efficiency (%)	22-23%	21.9%	22.8%	22.3%
Manufacturing Origin	Germany/Europe	Asia	China	China
Product Warranty	30 Years	12 Years	15 Years	12 Years
Performance Warranty	30 Years (87.4%)	25 Years (84.8%)	25 Years (84.8%)	25 Years (84.8%)
Temperature Coefficient	-0.31%/°C	-0.38%/°C	-0.35%/°C	-0.35%/°C
Degradation Rate	0.4% annually	0.7% annually	0.7% annually	0.7% annually

Customer Reviews & Industry Recognition

"From what I understand and read, AXITEC AXI world premium seems to be pretty efficient at 20.31%, German engineering and as per Solar Lab recommendation better than Longi Panels. So far pairing it with my Fronius Primo 4.0, it is working 101.5%@4060W compared to my Fronius Symo 5.0 at 100.8% @5040W. I am quite pleased with it."

— Australian homeowner review, SolarQuotes

"AXITEC isn't the biggest nor the best brand, but they offer great value for their price" according to industry experts. Having been in the solar game for over two decades, AXITEC has proven its mettle with consistently reliable performance.

While AXITEC faced compliance issues in Australia around 2017, those issues have been resolved, with the Clean Energy Council currently listing a dozen approved models.

Frequently Asked Questions

What is the AXITEC solar panels efficiency rating?

AXITEC panels achieve efficiency rates ranging from 22% to 23%, placing them in the higher tier of solar panel manufacturers and ensuring maximum energy production from available roof space. You can learn more about efficiency of solar panels and how it impacts energy production.

How long is the AXITEC solar panels warranty?

AXITEC offers an industry-leading 30-year warranty for both product and performance, significantly exceeding the standard 12-15 year product warranties offered by most manufacturers.

Are AXITEC bifacial solar panels worth the investment?

AXITEC's bifacial panels can deliver up to 25% more output in diffused light conditions such as cloudy days or shaded areas, making them particularly valuable for installations with reflective surfaces or challenging lighting conditions.

What is the AXITEC solar panels degradation rate?

AXITEC panels lose only about 0.4% of their power annually, which is better than the industry average of 0.7%-0.8%, ensuring sustained performance over decades.

How do AXITEC solar panels price compare to competitors?

At $2.00-$2.60 per watt, AXITEC panels are well below the average solar panel cost of $3.00 per watt, offering exceptional value for German-engineered quality. For a broader comparison, you might want to check out our solar panels review which covers price, technical characteristics, pros and cons.

What is the AXITEC solar panels temperature coefficient?

AXITEC panels maintain steady performance with a temperature coefficient between -0.44 to -0.26%/°C, ensuring reliable energy production even during hot summer conditions.

Ready to Go Solar with AXITEC Panels?

Get competitive pricing on premium German-engineered solar panels with industry-leading 30-year warranties and superior efficiency ratings.

SHOP AXITEC SOLAR NOW

What makes Axitec solar panels a good choice?

Axitec solar panels are known for their high efficiency, durability, and affordability. They use half-cut cell technology to improve energy output, have a strong performance warranty of up to 25 years, and are built to withstand harsh weather conditions, making them a reliable choice for residential and commercial solar installations.

What is the warranty on Axitec solar panels?

Axitec offers a 15 to 25-year performance warranty, depending on the model. The linear power warranty ensures that the panels maintain at least 85% of their original efficiency after 25 years. Additionally, they provide a 12-year product warranty for defects and workmanship.

Are Axitec solar panels Tier 1?

While Axitec is not classified as a Tier 1 manufacturer, the company has been in the solar industry for over 20 years and is known for German engineering standards. Their panels undergo rigorous testing, and many installers consider them a high-quality, cost-effective alternative to Tier 1 brands.

What types of solar panels does Axitec offer?

Axitec produces monocrystalline and polycrystalline solar panels, with a focus on high-performance half-cut cell monocrystalline modules. They also have bifacial models that capture sunlight from both sides, increasing overall energy yield.

Where are Axitec solar panels manufactured?

Axitec is a German-based company, but its manufacturing facilities are located in Asia and Europe. Their production adheres to strict German quality standards, ensuring reliable performance and durability.

How do Axitec panels perform in extreme weather conditions?

Axitec solar panels are designed to withstand high snow loads (up to 5400 Pa) and wind loads (up to 4000 Pa). They are also certified for high humidity, salt mist, and ammonia resistance, making them suitable for various climates, including coastal and high-temperature areas.

Are Axitec solar panels compatible with battery storage systems?

Yes, Axitec solar panels are compatible with most solar battery storage systems, including lithium-ion and lead-acid batteries. They can be integrated into off-grid and hybrid solar setups when paired with the right inverter and charge controller.

More bifacial solar panels