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Canadian Solar 315W Solar Panel 120 cell CS3K-315MS

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(3 ratings)
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Customer reviews & Questions

Verified buyer reviews
Customer Reviews
  • Reviews (408)
  • Questions (10)
Joshua
01/04/2021 05:07 pm
Great service and company. Highly pleased with my purchase.
Ken
12/02/2020 09:15 am
I would recommend this company to everyone. The guys helped me with my order. Thank you.
Edgard
11/18/2020 11:30 pm
Very good custom service ever.
Jason
11/10/2020, 20:54
Do you ship to Hawaii? If so, is there a quantity to purchase for free shipping?
A1 SolarStore
We can ship to HI, but shipping has to be custom quoted .
Andrew Keasler
09/28/2020, 17:39
I purchased 10 panels. What is the recommended amount of batteries. The system will be hooked to my power line from the power company.
A1 SolarStore
You can size battery bank by using TROJAN battery calculator http://www.batterysizingcalculator.com/
Michael
09/12/2020, 19:01
Are these located or shipped from Florida If so can they be picked up to avoid shipping cost? Thank you
A1 SolarStore
Yes we have this panels in Ft. Lauderdale warehouse.
pick up?
08/28/2020, 15:40
wondering where a pick up location would be near Indianapolis, IN
A1 SolarStore
This panel shipped from Florida and California
mike
08/23/2020, 19:46
If these 315 watt panels are rated at 9.61 amps per panel is the minimum recommended mppt charger 40 amp, to handle a min quantity of 4 panels?
A1 SolarStore
Min rated charger 1260W. See charger specification on maximum PV input.
geomarks001@gmail.com
08/19/2020, 23:14
Can I purchase a single panel? (not 4 panels)
A1 SolarStore
No min purchase is 4 panels. We have other panels that can be purchased as a single.
Gregory Johnson
08/13/2020, 18:25
connector cable length?
A1 SolarStore
Portrait: 400 mm (15.7 in) (+) / 280 mm (11.0 in) (-); landscape: 1160 mm (45.7 in)
Cp
07/26/2020, 17:58
Will this work with a Goal Zero system?
A1 SolarStore
We need more information about Goal Zero battery charger to answer your question.
Robert McNease
07/10/2020, 07:04
Ad says 12 24 48 volt. Is that in series or stand alone ?
A1 SolarStore
Its a description of battery charger compatibility. Actual voltage from the PV module depends on connection and sun iradiance
Terry Riddle
06/13/2020, 20:16
With the external framing, can this be attached to an RV roof and can the panel provide MC4 connectors to attached to an existing roof mount?
A1 SolarStore
Panels have MC4 connectors. And can be attached to RV roof with Z brackets or any other universal PV brackets.

Specification

Length65.9in
Width39.1in
Rated Power Output 315 W
Voltage (VOC)40.1V
Number of cells120
Cell TypeMonocrystalline
Rated Efficiency19.26%
Connector TypeT4 - MC4 compatible
Backsheet Colorwhite
Frame Colorblack
Dimensions LxWxH65.9 x 39.1 x 1.38 in
ManufacturerCanadian Solar
Manufacturer Part #CS3K-315MS
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
  • Grid-Tie
  • Off-Grid
Warranty25-YEAR LINEAR WARRANTY
Delivery Time 5-7 business days

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

About product

Canadian Solar 315W Solar Panel 120 cell CS3K-315MS

The new CS3K Mono-PERC modules from Canadian Solar are the latest innovation from this well respected solar panel manufacturer. These monocrystalline modules feature the Mono-PERC 120 half cells which are designed to improve both efficiency and reliability.

The KuPower module series has improved shade tolerance, low temperature coefficient, and high PTC ratings of up to 93.11%.

These solar panels are the ideal solution for residential rooftop installations. Through maximizing the light absorption area, they have better shading tolerance and the module efficiency is maximized.

One of the main advantages of the new PERC cells is better energy performance, even on cloudy days, and during morning and evening hours. If a photon of light misses the cell, it can be reflected back and get a second chance at producing power. For more info on the properties of this solar panel take a look at Canadian Solar 315W datasheet.


Key Features of the CS3K-315MS Solar Panels

  • Power rating 315 watts
  • Mono PERC 120 half cells
  • Low power loss in cell connection
  • New technology maximizes the light absorption area, better shading tolerance
  • Module area efficiency 19.26%
  • Minimizes micro cracks for increased reliability
  • Lower internal current, lower hot spot temperature
  • 1.38 inch (35 mm) black anodized aluminum alloy frame on white backsheet (BOW)
  • Short circuit current (Isc) 10.14 A; Max 30 amp fuse
  • Operating Voltage (Vmp) 33.3 V
  • Operating Current (Imp) 9.61 A
  • Open Circuit Voltage (Voc) 40.1V
  • Power tolerance 0~ 5W
  • Long term system reliability with IP68 Junction Box; 3 bypass diodes
  • Robust black aluminum alloy frame to hold 6000 Pa load and wind load up to 4000 Pa
  • T4 connectors (MC4 comparable)
  • 25 Year linear performance warranty
  • 10 Year product warranty on materials and workmanship


Authorized Canadian Solar Distributor

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  • Competitive Pricing: We offer the best prices because we source directly from the manufacturer, with no middlemen driving up costs.
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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."

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

→ Check 400W Panels

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.

→ Check 450W Panels

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.

→ Check 550W Panels

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.

→ Check 700W Panels

SeriesPowerEfficiencyWarrantyIdeal use-case
400W400W21.1%25 yearsSpace-limited roofs
450W450W21.6%25 yearsLarger homes, businesses
550W550W21.0%25 yearsCommercial & large homes
700W700W20.8%25 yearsCommercial & industrial

Certifications & Testing

FeatureCertification/StandardBenefit
PID-free designTÜV Rheinland IEC 628041% annual degradation cap
Safety & constructionIEC 61215/61730 (2023 ed.)Global code compliance
Quality systemISO 9001/14001/45001Robust QA/HSE culture
Bifacial energy modelingNREL bifacial PV performance studyPredictable 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."

CertainTeed Solar vs. Canadian Solar: Which is Better for Your Project?

FeatureCanadian SolarCertainTeed Solar
EfficiencyUp to 21.6%Up to 20.5%
Price per Watt$0.45 - $0.85$0.70 - $0.75
Warranty25 years25 years
Made InChina/Canada/VietnamUSA

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."

"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."

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.

More Canadian Solar Solar Panels

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