Out of stock

Canadian Solar 440W Solar Panel 144 Cell Bifacial CS3W-440MB-AG Portrait Cables Wholesale

$279.84 /panel
price as of September 21
$0.636 /pw
Solar Loan from 6.99%
All Canadian Solar products All 440 Watt Panels



Rated Power Output 440 W
Voltage (VOC)48.7 V
Maximum String Voltage 1500V
Cell number
  • 144 cell
Cell TypeMonocrystalline
Rated Efficiency19.7 %
Connector TypeMC4 or T4 series
Frame Color
  • silver
Dimensions LxWxH83.9 x 41.3 x 1.2 in
Weight62.6 lbs
Pallet Qty33
ManufacturerCanadian Solar
Manufacturer Part #CS3W-440MB-AG
Operating Temperatures −40°F to +185°F
Scope of Application
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty12/ 30-year see warranty details

About product

CS3W MB AG is a model that uses a number of technologies to bring durability and performance to the next level. This panel takes full advantage of the Passivated Emitter Rear Contact (PERC) technology that allows it to capture up to 12% more energy. All thanks to a reflective layer on the back. This design maximizes the number of photons absorbed by solar cells. 

The use of half-cut cell technology is an additional perk. The solar cells of CS3W MB AG are half the size of those found in standard panels. Major advantages include reduced power consumption, extended life and enhanced efficiency in low-light conditions. As a result, the panel achieves an impressive efficiency of 19.7%. And while conventional panels use only one side to absorb photons, bifacial modules employ both sides at the same time. Thanks to the technology, this model can be up to 30% more efficient. Canadian Solar provides a 12-year product warranty. Stable power output is also guaranteed — performance warranty will protect you during 30 years. 

  • 440 W power output
  • 144 half-cut PERC cells
  • 19.7% efficiency
  • 1500 V DC maximum system voltage
  • MC4 connectors
  • 12-year product and 30-year performance warranties

Higher efficiency of up to 19.7%

CS3W MB AG guarantees the highest power output. PERC technology and potent anti reflective coating result in 19.7% module efficiency. This is significantly higher than average, which will result in substantial extra savings over the years of operation.

Heat-resistant performance

The heat is less of a threat with this module: with one of the lowest temperature coefficients in the industry, CS3W MB AG loses just 0.34% of efficiency for every 1.8°F above 77°F.

High quality standards

Canadian Solar stringent production requirements include various tests to guarantee high quality. The facilities are highly automated, allowing the manufacturer to maintain high standards while keeping warranty claims to a minimum.

Low degradation for a longer lifespan

These panels will lose no more than 2% of their power output in the first year of service. From the 2nd year to the 30th year, the average annual power decline will be no more than 0.45%. The module retains over 84.95% of its original output after 30 years. Guaranteed by Canadian Solar.

Certified for the most challenging environmental conditions

CS3W MB AG is resistant to PID, salt, acid and ammonia. It can also withstand up to 5400 Pa mechanical load on the front and 3600 Pa on the back. Such robustness is mainly due to the 1.2" thick anodized aluminum frame and a layer of protective glass.


83.9" x 41.3" x 1.2"


62.6 lb

Reviews & Questions

  • Reviews (2)
  • Questions (3)
The operational data greatly surpassed our initial assumptions. With the exception of an early inverter repair, the whole system (panels, inverters, and batteries) has been steady and dependable.
Gardner Willms
01/10/2023 12:32 pm
Best bang for your buck
Joel Hand
01/04/2023 09:19 am

Leave a review

Which Enphase microinverter is best for this panel?
01/13/2023, 19:17
Enphase IQ8 is the newest and the most advanced of all Enphase microinverters.
Is it possible to have these CS panels delivered by XPO?
U. Petree
01/11/2023, 08:18
Yes, we work with all top carriers, including XPO.
Is there anyway I can just buy one panel from any company on your site?
01/09/2023, 09:13
Typically, you can order a single panel and use our pickup option to receive it. When you’re viewing a panel, a list of all available pickup locations is to the right under “Availability”.