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Canadian Solar Brand review

CS3K-325MS-AG

325 Wp PERC
ComparePV verdict

Warranty pick, heavy for its output

Rank 12,924 of 14,129
Compare panels Datasheet PDF
Power (Wp)
325
Typical for its class
Efficiency (%)
19.60
Typical · median 19.00%
Density (Wp/m²)
195.6
Typical · median 190.0
Temp (%/°C)
-0.360
Typical · median -0.360
Weight (kg)
22.5
Weak · 3.5 kg above median
Warranty (yrs)
30
Strong · top 16%

The KuDymond CS3K-MS-AG series consists of monocrystalline PERC modules engineered to withstand extreme weather conditions while delivering consistent energy yield throughout the system's lifetime. Built with Take-e-way cell interconnection technology, available in MBB and 5BB busbar configurations, the panels feature low power loss in cell connections and reduced sensitivity to micro-cracks, resulting in greater durability during transport and installation. The series stands out for its high structural resistance to snow and wind loads, making it a solid choice for installations in harsh climates, including roofs exposed to heavy winter loads. A low temperature coefficient combined with a reduced NMOT allows the modules to maintain stable performance on hot days, limiting the typical output drop at elevated operating temperatures. Another advantage is improved partial shading tolerance, which matters for irregular roof layouts or sites near shade-casting obstacles. The manufacturer backs the series with a 30-year linear power warranty and a 12-year product warranty, adding an extra layer of investment security for both residential rooftop systems and larger commercial ground-mount installations.

Ranking

291 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.60% 19.00% Typical 12,677
Power density 195.6 190.0 Typical 12,697
Temperature coefficient -0.360 -0.360 Typical 12,425
Weight per kWp 69.2 60.3 Weak · bottom 19% 13,489
Performance warranty 30 yrs 25 yrs Strong · top 16% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 caution
Best for

Residential, commercial, cold-climate, hot-climate and shaded-installations.

Not ideal for

Weight-limited structures.

Strengths
30 year performance warranty

Top 16% of the PERC 300-350 W segment, against a median of 25 yrs.

Watch-outs
69.2 kg per kWp

Bottom 19% of the PERC 300-350 W segment, against a median of 60.3.

What owners get
Established Tier-1 manufacturer

Canadian Solar is a bankable Tier-1 manufacturer headquartered in Canada, operating since 2001, which lowers financial risk for investors and eases access to project bank financing.

High snow and wind load resistance

KuDymond CS3K-MS-AG modules achieve snow loads up to 6000 Pa (heavy snow load variants up to 8100 Pa), well above the industry standard of 5400 Pa, making them a strong choice for roofs in regions with harsh winters.

Low power temperature coefficient

The Pmax temperature coefficient is -0.36%/°C, limiting output loss on hot days and delivering higher real-world annual yield compared to PERC modules with coefficients closer to -0.40%/°C.

30-year linear power warranty

The manufacturer backs the series with a 30-year linear power warranty, which in 2019-2021 (production period) exceeded the then-standard 25-year warranty offered by most Tier-1 competitors.

Take-e-way cell interconnection technology

Take-e-way cell interconnection (available in MBB and 5BB variants) reduces inter-cell connection power losses and the impact of microcracks on performance, improving durability during transport and installation.

Trade-offs
Production discontinued since 2021

The KuDymond CS3K-MS-AG series was discontinued (released 2019, end-of-life 2021), meaning limited availability of service and replacement parts, and difficulty sourcing identical modules for system expansion.

Efficiency trails top-tier competitors

Efficiency up to 20.2% is comparable to SunLink LUXMAX (20.16%) but falls behind current top-tier N-type TOPCon/HJT modules reaching 21-22%, a natural result of the older PERC technology from the 2019-2021 period.

No bifacial technology

The modules lack dual-sided generation (is_bifacial: false), forgoing the additional 5-15% yield potential available with competing bifacial modules on reflective surfaces or in ground-mount installations.

Notes from the database
  • At 19.6% efficiency, this panel is on par with typical PERC 0-400W modules
  • At 195.6 W/m² power density, roof space requirements are typical for PERC 0-400W panels
  • At -0.36%/°C, hot weather performance is typical for PERC 0-400W panels
  • At 22.5 kg, this panel is 2.0 kg heavier than the PERC 0-400W median (20.5 kg) - more demanding for installation crews
  • In the top 90% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 325 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.60 % Typical Segment median 19.00%
Vmpp · Impp 33.50 V · 9.71 A Operating point at max power
Voc · Isc 40.30 V · 10.22 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1675×992×35 mm · 1.66 m² of roof
Weight 22.5 kg Weak Weak · 3.5 kg above median
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Typical median -0.360 of its segment
Coefficient Voc · Isc -0.290 · 0.050 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 16% · median 25 yrs

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.360 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Canadian Solar CS3K-325MS-AG 325 W 19.60% -0.360 22.5 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.7 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.7 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, lighter, +3.7 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.5 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.5 pp
ZEUS 3.2 285WP FullBlack 285 W 23.14% -0.260 15.6 kg Cooler, lighter, +3.5 pp
GKA182M285W 285 W 23.00% - 10.8 kg -40 W, lighter, +3.4 pp
GKA182M300W 300 W 23.00% - 16.2 kg -25 W, lighter, +3.4 pp
GKA210M320W 320 W 23.00% - 16.2 kg Lighter, +3.4 pp
CS3K-295P-AG 295 W 17.80% -0.360 22.5 kg -30 W, -1.8 pp
CS3K-300MS 300 W 18.10% -0.360 18.5 kg Lighter, -1.5 pp, -5 yr warranty
CS3K-305MS 305 W 18.40% -0.360 18.5 kg Lighter, -1.2 pp, -5 yr warranty
CS3K-310MS 310 W 18.70% -0.360 18.5 kg Lighter, -0.9 pp, -5 yr warranty
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +3.0 pp, +10 yr warranty
LEPV 400 400 W 22.31% -0.290 20.0 kg +75 W, cooler, +2.7 pp
NS-360MH-60 360 W 22.12% -0.290 17.0 kg Cooler, lighter, +2.5 pp

Found 140 panels of the same or similar size to this one, within ±10 mm. See them here Found 237 panels of the same or similar size to this one, within ±25 mm. See them here Found 457 panels of the same or similar size to this one, within ±50 mm. See them here Found 739 panels of the same or similar size to this one, within ±100 mm. See them here

About the KuDymond CS3K-MS-AG series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Are Canadian Solar KuDymond CS3K-MS-AG panels still available for purchase?
The KuDymond CS3K-MS-AG series has been discontinued by Canadian Solar and replaced by newer, higher-power models. Units may still be found through distributors as remaining stock, though in limited quantities. Before buying, check the manufacturing date and confirm the manufacturer's warranty still applies to that specific batch of modules.
What is the maximum power output of a KuDymond CS3K-MS-AG panel?
Modules in this series reach up to 335 Wp. This is a typical rating for monocrystalline PERC panels of standard dimensions, well suited for both residential rooftop installations and smaller commercial systems where power-to-area ratio matters.
Are KuDymond CS3K-MS-AG panels suitable for roofs exposed to heavy snow loads?
Yes, the series is engineered for high mechanical resistance to snow and wind loads. A reinforced frame combined with Take-e-way cell-connection technology reduces the risk of microcracks under heavy mechanical stress, making these panels a solid choice for harsh-climate regions and roofs subject to significant winter snow accumulation.
What is the difference between the MBB and 5BB variants of the KuDymond CS3K-MS-AG?
The MBB (multi-busbar) variant uses more thin busbars than the traditional 5BB design, reducing resistive losses, improving current collection from the cell, and limiting the impact of microcracks on power output. In practice, MBB panels offer slightly higher efficiency and durability, while the 5BB version is a cheaper, proven option with comparable reliability.
How do KuDymond CS3K-MS-AG panels perform on hot days?
Thanks to a low power temperature coefficient and a reduced NMOT rating, these panels lose less output than standard modules during high operating temperatures. This translates into more stable energy generation in summer, which matters especially on poorly ventilated roofs where module temperatures can rise significantly.
What warranty applies to KuDymond CS3K-MS-AG panels, and does it still hold now that the series is discontinued?
Canadian Solar backs the series with a 12-year product warranty and a 30-year linear power warranty. Discontinuation does not affect warranty validity for already installed panels - as a Tier 1 manufacturer headquartered in Canada, the company continues to honor claims for discontinued series under the original warranty terms.
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