--- title: "Canadian Solar CS3K-310P-AG 310W Solar Panel - Specs & Review | ComparePV" description: "Canadian Solar CS3K-310P-AG 310W solar panel. Specs: 18.70% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/canadian-solar-cs3k-310p-ag" updated: 2026-09-11 --- # Canadian Solar CS3K-310P-AG Warranty pick, heavy for its output 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Canadian Solar - **Model:** CS3K-310P-AG - **Series:** KuDymond CS3K-P-AG - **Rated power:** 310 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 310 W | 325 W | Weak - bottom 17% | | | Module efficiency | 18.70% | 19.00% | Typical | 13,058 | | Power density | 186.6 | 190.0 | Typical | 13,051 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight (kg) | 22.5 kg | 19.0 kg | Weak - bottom 10% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.70% | 19.00% | Typical | 13,058 | | Power density | 186.6 | 190.0 | Typical | 13,051 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight per kWp | 72.6 | 60.0 | Weak - bottom 10% | 13,525 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Strengths - **30 year performance warranty** - Top 15% of the PERC 300-350 W segment, against a median of 25 yrs. ### Watch out for - **72.6 kg per kWp** - Bottom 10% of the PERC 300-350 W segment, against a median of 60.0. Ranked 13,525th in the whole database. - **Best for:** Residential, commercial and cold-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 310 W - **Efficiency:** 18.70 % - **Voltage at Pmax (Vmp):** 33.10 V - **Current at Pmax (Imp):** 9.37 A - **Open-circuit voltage (Voc):** 39.70 V - **Short-circuit current (Isc):** 9.81 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell technology:** PERC - **Cell count:** 120 ### Physical - **Length:** 1675 mm - **Width:** 992 mm - **Thickness:** 35 mm - **Weight:** 22.5 kg - **Area:** 1.66 m2 - **Power density:** 186.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13058 of 14005 | | Power density | 13051 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 13525 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Long-standing Tier-1 manufacturer** - Canadian Solar has been operating since 2001 and holds bankable Tier-1 status, providing high financial credibility and reduced risk for investors financing ground-mount installations. - **30-year linear power warranty** - The series offers a 30-year linear power degradation warranty, matching the best market offerings and exceeding the standard 25-year warranties typical of most polycrystalline modules from this era. - **Multi busbar (MBB) architecture** - MBB technology reduces resistive losses at cell interconnections and lessens the impact of microcracks on module output, resulting in more stable energy production under partial shading. - **High mechanical load resistance** - The module withstands snow loads up to 6000 Pa and wind loads up to 4000 Pa, making it a solid choice for roofs in regions with heavy snowfall and strong winds. - **Favorable power temperature coefficient** - A Pmax temperature coefficient of -0.36%/°C ensures a relatively smaller power loss at high module operating temperatures, which matters for installations on sun-exposed roofs in summer. ## Cons - **Production discontinued** - The KuDymond CS3K-P-AG series (released in 2019) has been discontinued, meaning limited availability of identical replacement modules for system expansions and more difficult access to warranty service. - **Below-average efficiency for the segment** - Maximum efficiency of 19.9% is comparable to the competing Waaree ARKA series (19.81%) but clearly trails newer monocrystalline modules such as JA Solar Monocrystalline80 (23.15% at the same 330 Wp power), meaning more roof area is needed for equivalent output. - **Older PERC technology, no n-type option** - The module relies solely on polycrystalline PERC cells with no bifacial option, while the current Tier-1 market (2025-2026) has shifted toward n-type TOPCon and HJT technologies offering higher efficiency and lower LID degradation. ## About this series The KuDymond CS3K-P-AG is a polycrystalline module series from Canadian Solar built for projects where reliability under demanding climate conditions comes first. The modules rely on **multi busbar (MBB)** cell architecture, which reduces current losses at cell interconnections and limits the impact of micro-cracks on overall panel performance. As a result, the series maintains stable energy output even under partial shading or minor mechanical damage to individual cells. The design stands out for its **high resistance to snow and wind loads**, making it a solid choice for roofs exposed to harsh weather, including heavy winter snowfall. A low nominal module operating temperature (NMOT) combined with a favorable power temperature coefficient translates into **better performance at high temperatures**, which matters for installations in regions with intense summer sun. A high PTC rating confirms the module's real-world energy yield, not just laboratory-tested efficiency. The KuDymond CS3K-P-AG series works well for both rooftop and ground-mounted installations where investors expect **long-term production stability** and a predictable return on investment, backed by an extended linear power output warranty and a solid materials and workmanship warranty. ## Notable figures - At 18.7% efficiency, this panel is 0.8pp below the \*\*PERC 0-400W\*\* median of 19.4% - At 186.6 W/m², this panel generates 7.8 W/m² less per unit area than \*\*PERC 0-400W\*\* median (194.4 W/m²) - 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 - #13058 for efficiency, #12345 for temperature performance out of 14005 panels ## Questions ### Are Canadian Solar KuDymond CS3K-P-AG panels still available for purchase? The KuDymond CS3K-P-AG series has been discontinued from Canadian Solar's current production lineup and replaced by newer, higher-power modules. Units may still be available from distributors' existing stock, though availability is limited. Before purchasing, confirm remaining inventory and verify that the seller can still provide full warranty support despite discontinuation. ### What warranty comes with CS3K-P-AG panels, and does it cover power degradation? The manufacturer provides a 12-year product warranty covering materials and workmanship, plus a 30-year linear power output warranty. This means power degradation occurs gradually and predictably over the panel's lifespan rather than dropping sharply after a few years. This warranty structure gives investors confidence in the long-term return of their solar installation. ### Is the 330 Wp KuDymond CS3K-P-AG panel suitable for roofs with heavy snow load? Yes, the KuDymond CS3K-P-AG series is built with enhanced mechanical load tolerance, including resistance to heavy snow and strong wind loads. Thanks to its reinforced frame and multi busbar cell architecture, the panel performs reliably in harsh winter conditions, making it a solid choice for roofs in regions with heavy snowfall. ### How does multi busbar (MBB) technology in the CS3K-P-AG differ from panels with fewer busbars? Multi busbar technology increases the number of thin conductive wires connecting the cells, reducing current losses at cell interconnections and minimizing the impact of microcracks on overall module performance. In practice, this means more stable energy output even under partial shading or minor cell damage, compared to older designs with fewer busbars. ### Do CS3K-P-AG panels perform well in high summer temperatures? Yes, the KuDymond CS3K-P-AG series has a favorable power temperature coefficient and a low nominal module operating temperature (NMOT), resulting in smaller efficiency losses at high temperatures compared to many competing polycrystalline panels. A high PTC rating confirms real-world energy performance, which matters for installations in regions with strong summer irradiance. ### Is Canadian Solar a tier 1 manufacturer, and does that guarantee the quality of KuDymond panels? Yes, Canadian Solar is a globally recognized tier 1 solar panel manufacturer, reflecting financial stability, long-term industry experience, and credible long-term warranties. Headquartered in Canada, the company supplies modules to markets worldwide. Tier 1 status doesn't directly determine technical specifications, but it does increase investment security through greater confidence in warranty fulfillment. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Canadian_Solar-Datasheet-KuDymond_CS3K-P-AG_EN-cf98138e422f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | +30 W, +1.4 pp, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Lighter, +1.2 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | +25 W, +1.2 pp | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | +25 W, +1.1 pp, -5 yr warranty | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Lighter, +0.9 pp, -5 yr warranty | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | +50 W, +0.8 pp, -5 yr warranty | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | +20 W, +0.8 pp, -5 yr warranty | | [Canadian Solar CS3K-320P](https://comparepv.com/panel/canadian-solar-cs3k-320p) | 320 W | Lighter, +0.6 pp, -5 yr warranty | | [Canadian Solar CS3K-295P-AG](https://comparepv.com/panel/canadian-solar-cs3k-295p-ag) | 295 W | -15 W, -0.9 pp | | [Canadian Solar CS3K-300MS](https://comparepv.com/panel/canadian-solar-cs3k-300ms) | 300 W | Lighter, -0.6 pp, -5 yr warranty | | [Canadian Solar CS3K-305MS](https://comparepv.com/panel/canadian-solar-cs3k-305ms) | 305 W | Lighter, -0.3 pp, -5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +90 W, +3.9 pp, +10 yr warranty | | [Lina Energy LEPV 400](https://comparepv.com/panel/lina-energy-lepv-400) | 400 W | +90 W, cooler, +3.6 pp | | [Phono Solar NS-360MH-60](https://comparepv.com/panel/phono-solar-ns-360mh-60) | 360 W | Cooler, lighter, +3.4 pp | | [PolyCrown Solar Tech NS-360MH-60](https://comparepv.com/panel/polycrown-solar-tech-ns-360mh-60) | 360 W | Cooler, lighter, +3.4 pp | | [Maxeon SPR-MAX3-390-COM](https://comparepv.com/panel/maxeon-spr-max3-390-com) | 390 W | Cooler, +3.4 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/canadian-solar-cs3k-310p-ag Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.