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.

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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Q: 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.

All Solar Panels Clearance By Items

Axitec 440W Solar Panel 108 Cell All-Black Bifacial AC-440TGB/108BB Clearance

Rated Power Output 440 W
Voltage (VOC)39.83 V
Number of cells108
Cell TypeMonocrystalline

ClearanceUP TO 50% OFF

Axitec 440W Solar Panel 108 Cell All-Black Bifacial AC-440TGB/108BB Clearance

Rated Power Output 440 W
Voltage (VOC)39.83 V
Number of cells108
Cell TypeMonocrystalline

By Items

Axitec 440W Solar Panel 108 Cell All-Black Bifacial AC-440TGB/108BB Clearance

Rated Power Output 440 W
Voltage (VOC)39.83 V
Number of cells108
Cell TypeMonocrystalline

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Overview
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FAQ

Solar Panels for Home

Solar panels convert sunlight into electricity, allowing homeowners to reduce energy bills by 50-90% and achieve energy independence. In 2026, solar technology has never been more accessible: panel prices have dropped 70% over the past decade, efficiency has reached 22-24% for residential modules, and the federal Investment Tax Credit (ITC) still offers a 30% deduction on your total system cost.

At A1 SolarStore, we offer the largest selection of solar panels in the U.S. — over 26 premium brands, from budget-friendly options starting at $0.25 per watt to high-efficiency Tier 1 panels from LONGi, Canadian Solar, Q CELLS, and more.

Calculate Your Solar Needs

Not sure how many panels you need? Use our free calculator to get a personalized recommendation based on your address and energy bills.

Open Solar Calculator

Types of Solar Panels: Which One Is Right for You?

Understanding solar panel types is the first step to making an informed purchase. Each technology has distinct advantages depending on your roof space, budget, and performance goals.

☀️ Monocrystalline Panels

Made from single-crystal silicon with distinctive black appearance. Highest efficiency ratings (20-24%), better low-light performance, and longer lifespan (25-30 years).

Best for: Limited roof space, maximum power output

🔷 Polycrystalline Panels

Made from multiple silicon crystals with blue, speckled appearance. Lower efficiency (15-17%) but more affordable per watt.

Best for: Budget-conscious buyers with ample installation area

📄 Thin-Film Panels

Lightweight, flexible panels using photovoltaic material on glass or metal. Lowest efficiency (10-13%) but excellent high-temperature performance.

Best for: Commercial applications, curved surfaces, portable setups

🔄 Bifacial Panels

Capture sunlight from both sides, increasing energy production by 10-30% depending on surface reflectivity below.

Best for: Ground-mounted systems, elevated installations

Solar Panel Types Comparison

Panel Type	Efficiency	Lifespan	Best For	Price Range
Monocrystalline	20-24%	25-30 years	Limited roof space	$0.30-0.50/W
Polycrystalline	15-17%	25 years	Large areas, budgets	$0.25-0.35/W
Thin-Film	10-13%	15-20 years	Commercial, portable	$0.20-0.30/W
Bifacial	20-24%	30 years	Ground-mount systems	$0.35-0.55/W

How to Choose the Right Panel Wattage

Panel wattage determines how much electricity each module produces under standard test conditions. Higher wattage panels mean fewer panels needed for the same output.

📐 Quick Formula: Monthly kWh usage ÷ (Peak sun hours × 30 × 0.8) = kW system size needed

Example: A home using 1,000 kWh/month in a location with 5 peak sun hours needs approximately 8.3 kW system — that's about 21 panels at 400W or only 15 panels at 550W.

System Size by Home Size

Home Size	Avg. Monthly Usage	System Size	Panels (400W)	Panels (550W)
1,500 sq ft	750 kWh	6-7 kW	15-18	11-13
2,500 sq ft	1,200 kWh	10-12 kW	25-30	18-22
3,000 sq ft	1,800 kWh	14-16 kW	35-40	25-30

What Are Tier 1 Solar Panels?

Bloomberg New Energy Finance (BNEF) created the Tier 1 classification to identify bankable solar manufacturers. This designation indicates financial stability and market presence, though it does not directly guarantee product quality.

✅ To qualify as Tier 1, a company must:

Have provided panels to at least 5 different projects
Be financed non-recourse by 5 different banks in the past 2 years
Be vertically integrated (manufacture their own cells)

Top Tier 1 Brands We Carry

🏆 LONGi

World's largest solar manufacturer

🍁 Canadian Solar

Global leader since 2001

⚡ JA Solar

Top 5 global manufacturer

🌟 Jinko Solar

Innovation leader, up to 24.2% efficiency

🔬 Q CELLS

Made in USA option available

🇺🇸 Silfab

American manufacturing, 30-year warranty

Solar Panel Costs in 2026

Solar panel prices vary based on brand, efficiency, wattage, and order quantity. Remember that panel cost is typically 25-30% of total system cost — you'll also need inverters, mounting hardware, wiring, and installation labor.

Category	Price per Watt	Price per Panel (400W)	Best For
Budget/Clearance	$0.20-0.30	$80-120	DIY projects, tight budgets
Mid-Range	$0.30-0.40	$120-160	Most residential installations
Premium	$0.40-0.55	$160-220	Maximum output, limited space
Wholesale	$0.18-0.28	Varies	Large-scale projects

💰 Save with the Federal Tax Credit: The 30% ITC can save you thousands. A $15,000 system becomes $10,500 after the credit. Many states offer additional incentives.

Top Solar Panel Brands Compared (2026)

We carry 26 solar panel brands. Here are the most popular choices among our customers:

Brand	Origin	Efficiency	Warranty	Starting Price
LONGi	China	Up to 22.8%	25-30 yr	$0.28/W
Canadian Solar	Canada/China	Up to 22.5%	25 yr	$0.30/W
Q CELLS	Korea/USA	Up to 22.6%	25 yr	$0.35/W
Jinko Solar	China	Up to 24.2%	25-30 yr	$0.32/W
Silfab	USA/Canada	Up to 21.4%	30 yr	$0.42/W
JA Solar	China	Up to 22.4%	25 yr	$0.29/W
Trina Solar	China	Up to 22.5%	25 yr	$0.30/W

Want more detail? Read our comprehensive Best Solar Panels 2026 guide with in-depth reviews.

Expert Tip

When choosing between brands, don't focus solely on efficiency numbers. A panel with 21% efficiency from a reputable Tier 1 manufacturer with strong warranty support is often a better long-term investment than a 23% efficiency panel from an unknown brand. Look at the complete picture: warranty terms, company track record, and local support availability.

— A1 SolarStore Technical Team

Frequently Asked Questions

How many solar panels do I need for my home?

The number depends on your energy consumption, roof space, and panel wattage. A typical 2,500 sq ft home uses about 10,000-12,000 kWh annually and needs 20-25 standard 400W panels (or 15-18 higher-wattage 550W panels).

How long do solar panels last?

Most quality solar panels are warranted for 25-30 years and can produce electricity for 30-40 years. Performance degrades slowly — expect about 0.5% efficiency loss per year. After 25 years, panels typically still produce 80-85% of their original output.

Are solar panels worth it in 2026?

For most homeowners, yes. With the 30% federal tax credit, dropping panel prices, and rising electricity rates, the average payback period is 6-10 years. After that, you enjoy 15-20 years of nearly free electricity. Solar also increases home value by an average of 4.1% according to Zillow research.

What's the difference between monocrystalline and polycrystalline panels?

Monocrystalline panels are more efficient (20-24% vs 15-17%), perform better in low light, and take up less space. Polycrystalline panels cost less but require more roof area for equivalent output. For most residential installations, monocrystalline offers better long-term value due to higher energy production per square foot.

Can I install solar panels myself?

DIY installation is possible and can save $5,000-10,000 on labor costs. However, you'll need electrical knowledge, proper permits, and utility interconnection approval. Many of our customers are professional installers or experienced DIYers. We offer complete solar kits with everything you need including detailed installation guides.

Do solar panels work in cloudy weather or winter?

Yes, but at reduced efficiency. Panels produce electricity from light, not heat, so they work year-round. On cloudy days, expect 10-25% of normal output. In winter, shorter days reduce production, but cold temperatures actually improve panel efficiency. Germany, with weather similar to Seattle, is one of the world's largest solar markets.

What is net metering?

Net metering allows you to sell excess solar electricity back to the grid for credits on your utility bill. When your panels produce more than you use (daytime), you earn credits. At night or during high-usage periods, you use those credits. Policies vary by state and utility.

How do I maintain solar panels?

Solar panels require minimal maintenance. Rain usually keeps them clean, but you may want to rinse them 1-2 times per year in dusty areas. Inspect annually for damage, bird nests, or debris. Keep trees trimmed to prevent shading. Most modern panels include monitoring apps to track performance and alert you to any issues.

Why Buy Solar Panels from A1 SolarStore?

📦 Largest Selection

26 brands, 300 panel models, 340W to 715W options — more choices than any other retailer

💵 Best Prices

Wholesale pricing for all customers with bulk discounts available for larger projects

🎓 Expert Support

Our solar specialists help you design the perfect system for your specific needs

🚚 Fast Shipping

Most orders ship within 2-3 business days with nationwide delivery options

📍 Local Options

Pickup locations nationwide plus delivery directly to your door

🔧 Full Ecosystem

Panels, batteries, cables — everything in one place

"I compared prices from five different suppliers before finding A1 SolarStore. Not only were their prices 15% lower, but their customer service helped me design a system that perfectly matched my roof layout. The panels arrived in perfect condition and my installer said they were the easiest he'd worked with."

— Michael T., Texas

Need Help Choosing?

Our solar experts are ready to help you design the perfect system. Get personalized recommendations based on your energy needs, roof space, and budget.

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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.