Are Canadian Solar panels compatible with battery storage systems?

Yes, Canadian Solar panels work well 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 a compatible inverter.

Are Canadian Solar panels Tier 1?

Yes, Canadian Solar is a Tier 1 manufacturer, meaning it has a strong financial background and a proven track record of producing high-quality, reliable solar panels. The company has been a leader in the solar industry for over 20 years and is consistently ranked among the world's top solar panel manufacturers.

What makes Canadian Solar panels a good choice?

Canadian Solar is a Tier 1 solar panel manufacturer known for its high efficiency, durability, and affordability. The company offers a wide range of monocrystalline, polycrystalline, and bifacial panels, making them suitable for residential, commercial, and utility-scale projects.

What is the warranty on Canadian Solar panels?

Canadian Solar provides a 12- to 25-year product warranty, depending on the model. Additionally, their linear performance warranty guarantees at least 84.8% of the original output after 25 years for most of their modules.

Where are Canadian Solar panels manufactured?

Despite the name, Canadian Solar is a global company headquartered in Canada, but its panels are manufactured in China, Canada, Vietnam, and other locations. The company follows strict quality control and testing standards to ensure durability and performance.

What types of solar panels does Canadian Solar offer?

Canadian Solar produces a variety of high-efficiency monocrystalline (HiKu, HiDM) and polycrystalline solar panels. Their bifacial modules can generate power from both sides, increasing total energy production. They also offer TOPCon and Heterojunction Technology (HJT) panels for even greater efficiency.

Are Canadian Solar panels good for extreme weather conditions?

Yes, Canadian Solar panels are designed to withstand high wind and snow loads (up to 5400 Pa for snow and 4000 Pa for wind). They are also resistant to salt mist, ammonia, and PID degradation, making them ideal for various climates, including coastal and desert environments.

Where are Philadelphia Solar panels manufactured?

Philadelphia Solar is headquartered in Jordan, where they have a state-of-the-art manufacturing facility. They have also announced plans to establish a manufacturing presence in the USA by 2024, aiming to produce American-made solar panels to serve the U.S. market.

What is the warranty on Philadelphia Solar panels?

Philadelphia Solar provides a 12-year product warranty covering material and workmanship defects. Additionally, they offer a 25-year linear power output warranty, ensuring that the panels will maintain a high level of performance over time.

Are Philadelphia Solar panels suitable for extreme weather conditions?

Yes, Philadelphia Solar panels are designed to withstand harsh environmental conditions. They are built with robust materials and have been tested to endure high wind and snow loads, making them suitable for various climates and weather extremes.

Do Philadelphia Solar panels comply with international certifications?

Yes, Philadelphia Solar panels comply with international quality and safety standards. They hold multiple certifications, including IEC and UL listings, ensuring their products meet global performance and safety requirements.

Do Philadelphia Solar panels have strong temperature performance?

Yes, Philadelphia Solar panels have a low temperature coefficient, which means they maintain high efficiency even in extreme heat. Their performance remains stable in temperatures ranging from -40°C to +85°C (-40°F to 185°F), making them ideal for hot climates like the Middle East, Africa, and the southwestern U.S.

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.

Who is CW Energy USA?

CW Energy USA is a subsidiary of CW Enerji, a solar panel manufacturer based in Antalya, Turkey, with an annual production capacity of 1.8 GW. Established in 2010, the company has gained global recognition for its commitment to quality and innovation. CW Energy USA offers high-performance solar panels suitable for residential, commercial, and industrial applications.

What types of solar panels does CW Energy USA offer?

CW Energy USA specializes in monocrystalline solar panels, including bifacial modules that can capture sunlight from both sides, enhancing energy production.

What is the warranty on CW Energy USA solar panels?

CW Energy USA provides a 12-year product warranty covering materials and workmanship. Additionally, they offer a 30-year linear performance warranty, ensuring that the panels will retain at least 80.1% of their original performance after 30 years.

Are CW Energy USA solar panels suitable for extreme weather conditions?

Yes, CW Energy USA solar panels are built to withstand harsh environmental conditions. They are resistant to potential-induced degradation (PID), salt mist, acid, and ammonia. The panels can endure mechanical loads up to 5400 Pa on the front and 2400 Pa on the back, making them suitable for various climates, including coastal and high-wind areas.

What certifications do CW Energy USA solar panels hold?

CW Energy USA panels are certified to meet international quality and safety standards, including:UL Certification SGS Certification VDE Certification TÜV-SÜD Certification ISO Certification These certifications ensure compliance with rigorous industry standards.

Where are GreenWatts solar panels manufactured?

GreenWatts operates a production facility in Brazil, combining advanced technology with skilled craftsmanship to produce high-quality solar modules. They have experience in exporting globally, ensuring their products meet international standards.

What is the lifespan of GreenWatts solar panels?

GreenWatts solar panels are designed to last 25+ years, with a linear power output warranty ensuring at least 80-85% efficiency after 25-30 years. Their corrosion-resistant aluminum frame and tempered glass enhance durability against extreme weather conditions.

Do GreenWatts solar panels qualify for federal and state incentives?

Yes, GreenWatts solar panels are eligible for the U.S. Federal Solar Investment Tax Credit (ITC), which provides up to 30% tax credit on installation costs. They also qualify for various state rebates and net metering programs, depending on local policies.

Are GreenWatts solar panels suitable for extreme weather conditions?

Yes, GreenWatts solar panels are designed to withstand harsh environmental conditions. For example, their 450-Watt Monocrystalline Solar Panel is encased in an anodized aluminum alloy frame with high-transmittance coated tempered glass, allowing it to endure temperatures ranging from -40°C to +85°C.

What is the efficiency of GreenWatts solar panels?

GreenWatts' solar panels offer high efficiency rates. For instance, their 550W bifacial solar panel achieves a maximum efficiency of up to 21.3%, making them suitable for utility-scale projects.

Where are SolarSpace Power solar panels manufactured?

SolarSpace Power operates multiple manufacturing facilities across Asia, including: China, Cambodia, Laos. As of 2023, the company has achieved a production capacity of 60 GW for solar cells and 7.2 GW for solar modules.

Are SolarSpace Power solar panels suitable for extreme weather conditions?

Yes, SolarSpace Power's solar panels are designed to withstand various environmental conditions, including extreme weather. They are built with durable materials and have been tested to endure high wind loads and heavy snow, ensuring reliable performance across diverse climates.

What certifications do SolarSpace Power solar panels hold?

SolarSpace Power's solar panels are certified to meet international quality and safety standards, including IEC 61215 & IEC 61730, UL 61730 & UL 1703, ISO 9001 & ISO 14001. These certifications affirm the panels' adherence to rigorous industry standards, providing customers with assurance of their quality and safety.

What warranties does SolarSpace Power provide for their solar panels?

SolarSpace Power offers robust warranty terms for their products:Product Warranty: Covers 12 to 15 years against manufacturing defects. Performance Warranty: Extends up to 30 years, guaranteeing a minimum power output retention of 87% over the warranty period.

Do SolarSpace Power solar panels qualify for U.S. solar incentives?

Yes, SolarSpace Power panels qualify for the U.S. Federal Solar Investment Tax Credit (ITC), which provides a 30% tax credit on the cost of a solar installation. They may also be eligible for state rebates, net metering programs, and local solar incentives.

Where are Hounen Solar panels manufactured?

Hounen solar panels are manufactured in a state-of-the-art facility in Orangeburg, South Carolina, USA, and there are plans for global expansion underway, including a new factory in the United States.

Are Hounen Solar panels Tier 1?

Hounen Solar is considered an emerging brand and may not be classified as Tier 1 by Bloomberg yet. However, the company is rapidly growing and gaining a reputation for reliable and competitively priced solar modules.

What types of solar panels does Hounen Solar offer?

Hounen Solar offers a range of monocrystalline panels, including half-cell and bifacial models, with power outputs typically ranging from 400W to 600W, depending on the model.

What kind of warranty does Hounen Solar provide?

Hounen Solar panels usually come with a 12-year product warranty and a 25-year performance warranty, ensuring long-term energy production and peace of mind.

Are Hounen Solar panels suitable for harsh weather conditions?

Yes, Hounen panels are tested for durability and resistance to wind, snow, and salt mist, making them suitable for various climates and coastal installations.

Are Hounen Solar panels compatible with most inverters and mounting systems?

Yes, Hounen panels meet international standards and are compatible with most major inverter brands and racking systems.

What is G-STAR Solar?

G-STAR Solar, officially known as G-STAR Pte. Ltd., is a solar photovoltaic (PV) manufacturer founded in 2019 and headquartered in Singapore. The company focuses on providing smart energy solutions globally, specializing in PV material manufacturing and system services.

Where are G-STAR Solar's manufacturing facilities located?

G-STAR Solar has established a "vertically integrated" PV production base with facilities in Thailand, Indonesia, Laos, the Philippines, and Egypt.

What warranties does G-STAR Solar provide for its modules?

G-STAR Solar offers a 25-year product warranty and a 30-year linear power warranty for its modules, with an annual degradation of 0.40% over 30 years.

Are GSTAR Solar panels a good fit for residential or commercial installations?

Yes, GSTAR panels are versatile and can be used in both residential and commercial systems. Their high power density and cost-effectiveness make them popular in utility-scale and industrial projects as well.

Are GSTAR Solar panels compatible with standard inverters and racking systems?

Absolutely. GSTAR panels are built to comply with international standards and work seamlessly with most common inverters, optimizers, and mounting systems.

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SolarWorld Solar Panels

SolarWorld Solar Panels

All Solar Panels Clearance

65% OFF

SolarWorld 285W Solar Panel 60 Cell SW 285 Mono Black Assembled in USA Liquidation

Price per Watt$0.35
Rated Power Output 285 W
Voltage (VOC)39.7V
Number of cells60
Cell TypeMonocrystalline

Pickup on Mon, Jul 07 from Coral Springs, FL

Overview
Articles

SolarWorld Panels for Sale

SolarWorld—once the largest U.S. solar panel maker—still commands loyalty among installers who value German-engineered quality, U.S. assembly heritage, and a warranty track record stretching back four decades. Whether you're hunting for a "new-old-stock" SolarWorld 350 W panel, a battle-tested SolarWorld 285 spec sheet, or simply curious how the brand stacks up in 2025, this guide has you covered—complete with pallet-pricing links to the SolarWorld panels catalog at A1 SolarStore.

Why Choose SolarWorld Solar

🇺🇸 Made in USA Heritage

Produced 800 MW annually in Hillsboro, OR—one of the most advanced manufacturing lines outside Asia with proven quality standards

⚡ Plus-Sorting Technology

Every module shipped at or above nameplate power—no "-3% tolerance" surprises with guaranteed performance specifications

🛡️ Extended Warranties

Up to 30-year linear warranties with <0.35% annual degradation—90% at 21 years, 86.85% at 30 years exceeding industry standards

📊 Proven Bankability

Long-term field data feed NIST PV models, showing <0.7%/yr loss—beating industry averages with reliable performance

"We've been swapping fading 2010 poly arrays with SolarWorld 350 XL mono—customers love the brand equity and beefy frames."

— Leo Martinez, VoltCity Solar (NJ, 2024)

Meet the Sunmodule Product Family

Sunmodule Plus 285 Mono

Model: SW 285 Mono (33 mm frame) | Efficiency: 17.0 % | Temp-co: -0.4 % / °C.
Ideal for residential retrofits where 60-cell format slots into existing racks.

Sunmodule Plus 350 XL Mono

72-cell, 1993 × 1000 mm frame, up to 18.1 % efficiency. Perfect for small C&I roofs chasing sub-$0.45/W hardware.

Sunmodule Protect Glass-Glass 270-290 W

Dual-glass lamination adds 20-year glass breakage cover and industry-leading 30-year linear warranty—ideal for coastal or desert installs.

Series	Power	Cells	Warranty	Unique Edge
Plus 60-cell	260-300 W	60	25 yr linear	Rigid 40 mm Al frame
Plus XL 72-cell	340-350 W	72	25 yr linear	Larger, lighter
Protect GG	270-290 W	60	30 yr linear	Glass-glass, <0.35 %/yr

Performance, Durability & Field Data

Feature	Certification/Standard	Benefit
Plus-Sorting Technology	Every module tested at nameplate	Guaranteed performance output
Hail/Load Testing	5,400 Pa front / 3,600 Pa rear	1.5× IEC minimum standards
NIST Performance Models	<0.7%/yr degradation tracking	0.1% NPV advantage verified
Long-term Field Data	13-year Arizona installation	92% nameplate after 13 years

Product Line Comparison

Series	Power Output	Efficiency	Cell Technology	Price/W	Best For
Plus 60-cell	260W - 300W	17.0%	60-cell Mono	$0.40-0.42	Residential retrofits
Plus XL 72-cell	340W - 350W	18.1%	72-cell Mono	$0.43-0.45	Small C&I installations
Protect Glass-Glass	270W - 290W	16.5%	60-cell Dual Glass	$0.45-0.48	Coastal & desert installs

SolarWorld vs Competition

Feature	SolarWorld 350W	Typical Import	Advantage
Manufacturing Origin	USA Heritage (Hillsboro, OR)	Malaysia / Thailand	Quality pedigree
Module Efficiency	18.1%	17-18%	More watts per ft²
Plus-Sorting	100% nameplate guaranteed	±3% tolerance	Predictable output
Product/Power Warranty	25/30 years	12/25 years	Longer ROI window
Price per Watt (USA)	$0.43	$0.39-0.42	Premium quality value

*Typical pallet pricing, June 2025

Frequently Asked Questions

Are SolarWorld panels still made?

Production ended in 2018; remaining inventory is new-old-stock or refurbished.

Where were SolarWorld modules manufactured?

SolarWorld Americas produced panels in Hillsboro, Oregon from 2008-2018, with German-engineered quality standards.

What is the SolarWorld warranty?

SolarWorld offered 25-year linear power warranties and up to 30-year warranties on Protect series. Some warranties transferred to SunPower; many resellers add third-party coverage to NOS pallets.

Can I buy SolarWorld panels in the USA?

Yes, through authorized dealers like A1 SolarStore. Stock is limited to new-old-stock and refurbished inventory, typically priced at $0.40-$0.45/W.

Ready to Power Your Project?

Get premium SolarWorld panels with proven USA heritage at competitive prices. Plus-Sorting technology, 30-year warranty, and reliable performance.

Shop SolarWorld Panels

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