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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 |
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Use |
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Warranty | 10/25 years see manufacturer |
Delivery Time | AVAILABLE ON WEST COAST ONLY |
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FAQ
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.
Great power output and greater energy yields. Produces 11% more power than conventional modules. Excellent performance at low irradiance of up to 97.5%.
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.
Canadian Solar’s many tests guarantee extreme quality assurance. This module received 359 Quality Control Points.
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.
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.
This module comes with a 10 year product warranty on materials and workmanship and a 25-year performance warranty.
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.
🏆 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)
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 |
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.
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 |
"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
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.
Canadian Solar panels are manufactured in China, Canada, and Vietnam, with stringent quality standards at each facility.
Canadian Solar offers a 25-year linear power warranty and a 25-year product warranty on their panels.
Yes, Canadian Solar panels are available throughout the USA and are eligible for domestic content incentives when installed with other U.S.-made components.
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Get premium Canadian Solar panels with Tier 1 quality at competitive prices. Advanced PERC technology, 25-year warranty, and proven reliability.
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