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Canadian Solar 305w
Authorized Distributor
Q&A- SpecificationCompareSee all
- Rated Power Output 305 W
- Voltage (VOC)39.9V
- Number of cells60
- Cell TypeMonocrystalline
Customer reviews & Questions
Verified buyer reviews
- Reviews (414)
- Questions
Eli
03/23/2020
The installer recommended Canadian Solar to me, mainly because they combine affordable price and high quality. I am glad I listen and got them. Very nice looking panels that seem very durable.
Ethan
03/17/2020
This was an easy choice for me. Canadian Solar is known for their highly efficient, durable and quality panels. I found a good deal on this website and saved some money too.
Myron
03/15/2020
These panels not only power efficient but also very cost efficient. I was able to get fewer panels to provide me with energy I needed thus saving a lot.
Zane
02/15/2020
I trusted my installer that these panels would work for us and I am so glad I did. I am impressed how efficient they are.
Daniel
01/21/2020
I live in California, in the high desert, and it gets very hot here. i was concerned about my power generation during heat waves but, fortunately, the modules do not seem to be affected by high temperatures. I am very pleased with the power production.
Jeff Reed
01/13/2020
It has been almost a year since I installed these modules. I love them. Great energy output, no maintenance and no pollution!
Jack
12/12/2019
These modules have been performing great since the day I had hem installed. No complaints.
Kevin
12/02/2019
I wanted brand name solar panels but did not want to spend more than I had to. Canadian Solar was a perfect choice for me. Great panels that work and look perfect.
Have a question about Canadian Solar 305w? Feel free to ask!
Specification
| Rated Power Output | 305 W |
| Voltage (VOC) | 39.9V |
| Number of cells | 60 |
| Cell Type | Monocrystalline |
| Rated Efficiency | 97.5% |
| Connector Type | T4 series |
| Backsheet Color | white |
| Frame Color | silver |
| Dimensions LxWxH | 65 x 39.1 x 1.38 in |
| Manufacturer | Canadian Solar |
| Manufacturer Part # | CS6K-305MS |
| Operating Temperatures | -40 °F to +185 °F |
| Scope of Application |
|
| Use |
|
| Warranty | 10/25 years see manufacturer |
| Delivery Time | AVAILABLE ON WEST COAST ONLY |
More Canadian Solar products
In stock
= 30
Canadian Solar 450W Solar Panel 108 Cells Black CS6.1-54TM-450 Wholesale 30 panels per pallet
Ready to ship on Aug 04–07
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
More Solar Panels
In stock
Limited stock
About product
Canadian Solar CS6K-305MS 305W Module
Canadian Solar's newest 60 cell Mono-PERC SuperPower CS6K-305MS module has a power output of 305W and a 5 bus bar cell design. The Mono-PERC cells in this module, significantly improve efficiency and reliability. PERC stands for Passivated Emitter Rear Contact. This refers to the dielectric layer on the back of a PERC solar cell which helps to reflect light that passes through the cell and then back into the cell to generate more electrons. This process is also known as backside passivation. The new technology also offers superior low irradiance performance in the morning, evening and even on cloudy days, increasing the energy output of the panel and the overall yield of the solar system.
Higher Efficiency 18.63%
Great power output and greater energy yields. Produces 11% more power than conventional modules. Excellent performance at low irradiance of up to 97.5%.
High Efficiency at High Temperatures
This module features a lower temperature coefficient improving the module's per watt actual power output compared to standard mono solar panels, reducing Light Induced Degradation (LID) by over 30%. Also, the module provides a high energy yield at low NOCT = 45°C.
Quality and Reliability
Canadian Solar’s many tests guarantee extreme quality assurance. This module received 359 Quality Control Points.
- Electroluminescence testing: A 100% EL screen test to eliminate cell or module defects
- Testing and analysis: Performance reliability, mechanical and chemical tests of raw materials and components
- Machine testing: Advanced automatic equipment in testing and manufacturing process
- Lab testing: The first module manufacturer-owned photovoltaic reliability testing laboratory to meet ISO/IEC 17025 standards
- Cleaning: 100% module visual inspection and clean before packing
- Increased System Reliability
Low Degradation
Low 0.7% annual degradation rate after an initial first-year degradation of 3% that results in a performance guarantee no less than 80% of the nominated power by year 25.
Enhanced Frame Design
Strong 35mm robust frame increases durability and strength and being able to hold a heavy snow load up to 6000 Pa and wind load up to 4000 Pa. Added ammonia, salt mist and blowing sand resistance makes this module an excellent choice for installations at seaside, farms and desert environments.
10 Year Product and 25 Year Performance Warranty
This module comes with a 10 year product warranty on materials and workmanship and a 25-year performance warranty.
Authorized Canadian Solar Distributor
- 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
Canadian Solar Panels for Sale
Canadian Solar is one of the most recognized names in the global solar panel market. Known for its impressive mix of affordability, efficiency, and long-term reliability, Canadian Solar panels have earned their place as one of the most popular choices for homeowners and businesses alike. From 400W to 550W models, these panels offer solid power outputs and are backed by excellent warranties.
Founded in 2001, Canadian Solar Inc. (NASDAQ: CSIQ) has grown to become one of the world's largest solar technology companies with over 87 GW of solar modules shipped globally. With manufacturing facilities across Asia and a strong presence in North America, the company has established itself as a leading Tier 1 manufacturer serving residential, commercial, and utility-scale markets in over 160 countries worldwide.
Why Choose Canadian Solar Panels?
🏆 Tier 1 Manufacturer
Leading global solar manufacturer with over 25 GW production capacity across multiple facilities, exporting to 160+ countries with proven financial stability and bankability
⚡ Advanced Technology
Half-cell PERC technology with up to 21.6% efficiency and excellent low-light performance with <0.5% annual power degradation ensuring long-term reliability
💰 Cost Advantage
Industry-leading price-to-performance ratio at $0.45-$0.85/W with excellent value proposition and competitive system pricing at $2.50-$3.50/W installed
🛡️ Superior Warranty
25-year linear power warranty + 25-year product warranty exceeding industry standards with comprehensive coverage and global support network
"Canadian Solar's 400W panel gives us exceptional value at $0.58/W—customers love the Tier 1 quality and proven reliability, and we appreciate the advanced PERC technology and robust build quality."
— Terry Shin, Mountain West Solar (UT, 2025)
Canadian Solar Panel Models: Powering Homes & Businesses
Canadian Solar 400W Solar Panel
- Efficiency: Up to 21.1%
- Ideal for: Residential systems and rooftops with limited space
- Warranty: 25 years product and performance
- Features: Enhanced durability and excellent low-light performance
Canadian Solar 450W Solar Panel
- Efficiency: Up to 21.6%
- Ideal for: Larger homes, small businesses, and commercial setups
- Warranty: 25 years product and performance
- Features: Durable and high-performing, ideal for locations with consistent sunlight.
Canadian Solar 550W Solar Panel
- Efficiency: Up to 21.0%
- Ideal for: Commercial installations and large residential solar setups
- Warranty: 25 years product and performance
- Features: Designed to produce more power with fewer panels, making it perfect for large-scale energy generation needs.
Canadian Solar 700W Solar Panel
- Efficiency: Up to 20.8%
- Ideal for: Commercial and industrial-scale solar power projects
- Warranty: 25 years product and performance
- Features: Maximizes power output while reducing system complexity by needing fewer modules.
| Series | Power | Efficiency | Warranty | Ideal use-case |
|---|---|---|---|---|
| 400W | 400W | 21.1% | 25 years | Space-limited roofs |
| 450W | 450W | 21.6% | 25 years | Larger homes, businesses |
| 550W | 550W | 21.0% | 25 years | Commercial & large homes |
| 700W | 700W | 20.8% | 25 years | Commercial & industrial |
Certifications & Testing
| Feature | Certification/Standard | Benefit |
|---|---|---|
| PID-free design | TÜV Rheinland IEC 62804 | 1% annual degradation cap |
| Safety & construction | IEC 61215/61730 (2023 ed.) | Global code compliance |
| Quality system | ISO 9001/14001/45001 | Robust QA/HSE culture |
| Bifacial energy modeling | NREL bifacial PV performance study | Predictable rear-side gain |
"We have a customer who saved 20% over competing brands by going with Canadian Solar 400W panels for their home system. The performance is exceptional, and the savings speak for themselves."
— John T., Solar Installations Inc.
CertainTeed Solar vs. Canadian Solar: Which is Better for Your Project?
| Feature | Canadian Solar | CertainTeed Solar |
|---|---|---|
| Efficiency | Up to 21.6% | Up to 20.5% |
| Price per Watt | $0.45 - $0.85 | $0.70 - $0.75 |
| Warranty | 25 years | 25 years |
| Made In | China/Canada/Vietnam | USA |
Customer Reviews of Canadian Solar Panels
"After comparing several brands, I decided on Canadian Solar for my 8 kW residential system. The panels were easy to install, and I've seen a steady return on my energy savings over the past year."
— Mark J., Homeowner, Texas
"We installed Canadian Solar's 550W panels for a commercial warehouse. The energy output has been fantastic, and the warranty gives us peace of mind. Highly recommend them for large-scale systems."
— Sarah W., Business Owner, Florida
Frequently Asked Questions
Are Canadian Solar panels Tier 1?
Yes, Canadian Solar is recognized as a Tier 1 manufacturer by Bloomberg New Energy Finance, indicating strong financial stability and proven bankability in the solar industry.
Where are Canadian Solar modules made?
Canadian Solar panels are manufactured in China, Canada, and Vietnam, with stringent quality standards at each facility.
What is the Canadian Solar warranty?
Canadian Solar offers a 25-year linear power warranty and a 25-year product warranty on their panels.
Can I buy Canadian Solar panels in the USA?
Yes, Canadian Solar panels are available throughout the USA and are eligible for domestic content incentives when installed with other U.S.-made components.
Ready to Power Your Project?
Get premium Canadian Solar panels with Tier 1 quality at competitive prices. Advanced PERC technology, 25-year warranty, and proven reliability.
Shop Canadian Solar Panels
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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.
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.
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