--- title: "Canadian Solar CS3L-350P 350W Solar Panel - Specs & Review | ComparePV" description: "Canadian Solar CS3L-350P 350W solar panel. Specs: 18.90% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/canadian-solar-cs3l-350p" updated: 2026-09-11 --- # Canadian Solar CS3L-350P Middle of its segment, modest efficiency 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Canadian Solar - **Model:** CS3L-350P - **Series:** HiKu CS3L - **Rated power:** 350 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 350 W | 380 W | Weak - bottom 2% | | | Module efficiency | 18.90% | 19.90% | Weak - bottom 12% | 12,996 | | Power density | 189.2 | 199.0 | Weak - bottom 13% | 12,974 | | Temperature coefficient | -0.360 | -0.350 | Typical | 12,345 | | Weight (kg) | 21.1 kg | 21.4 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.90% | 19.90% | Weak - bottom 12% | 12,996 | | Power density | 189.2 | 199.0 | Weak - bottom 13% | 12,974 | | Temperature coefficient | -0.360 | -0.350 | Typical | 12,345 | | Weight per kWp | 60.3 | 55.8 | Typical | 12,424 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **18.90% module efficiency** - Bottom 12% of the PERC 350-400 W segment, against a median of 19.90%. - **189.2 watts per square metre** - Bottom 13% of the PERC 350-400 W segment, against a median of 199.0. - **Best for:** Residential and commercial. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 350 W - **Efficiency:** 18.90 % - **Voltage at Pmax (Vmp):** 33.00 V - **Current at Pmax (Imp):** 10.61 A - **Open-circuit voltage (Voc):** 40.20 V - **Short-circuit current (Isc):** 11.24 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:** 1765 mm - **Width:** 1048 mm - **Thickness:** 40 mm - **Weight:** 21.1 kg - **Area:** 1.85 m2 - **Power density:** 189.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12996 of 14005 | | Power density | 12974 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 12424 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Tier-1 manufacturer with 25-year track record** - Canadian Solar has operated since 2001 and holds BloombergNEF Tier 1 status, confirming its ability to secure non-recourse project financing from commercial banks and lowering the risk of manufacturer bankruptcy during the warranty period. - **Reinforced frame limits microcrack propagation** - Additional crossbars in the frame design reduce the risk of cell microcrack propagation, a common issue in cheaper polycrystalline modules, resulting in more stable energy output over time. - **High mechanical resistance to snow and wind** - The series features enhanced structural durability, making it a solid choice for roofs in regions with heavy snow loads, where cheaper modules often require additional mounting reinforcement. - **25-year linear power warranty** - The manufacturer covers modules with a 25-year linear power warranty and a 12-year product warranty, matching the market standard set by tier-1 peers such as JA Solar in this segment. - **Low temperature coefficient** - Thanks to a low temperature coefficient, the modules limit power losses at high ambient temperatures, which matters for installations on poorly ventilated roofs during summer months. ## Cons - **Discontinued production (2019-2021)** - The HiKu CS3L-P series was discontinued in 2021, limiting availability of matching modules for expanding existing systems and potentially complicating long-term warranty service. - **Efficiency below current market standards** - Module efficiency of 17.6-18.9% is noticeably lower than comparable products, such as JA Solar JAM60D10 (20.4%) or YS Solar SM-90 (21%), meaning lower energy yield for the same roof area. - **Older poly PERC technology instead of mono** - Polycrystalline PERC cells lag behind newer monocrystalline cells used by competitors in performance, resulting in higher module weight (21.1 kg) and a larger footprint needed to reach comparable system power. - **Fire class C instead of A** - The datasheet lists fire performance class C per IEC 61730, which can be a limitation for roofs requiring the higher class A rating more commonly found in newer mono module series. ## About this series The HiKu CS3L-P series is a proven choice for installers looking for panels that combine mechanical durability with a competitive price per watt. The modules are built on **polycrystalline PERC cells** arranged in a 120-cell layout, delivering higher output than conventional panels in this class without moving up to pricier mono or half-cut technologies. The series' biggest advantage is its **reinforced crossbar frame design**, which effectively limits the impact of cell microcracks on long-term system performance - a real weak point in cheaper panels that here is solved at the structural level. The modules also stand out for their **high snow and wind load resistance**, making them a solid choice for roofs in regions with demanding climate conditions. Thanks to a **low temperature coefficient**, the panels maintain stable energy production even at high ambient summer temperatures, reducing the power losses typical of hot months. The manufacturer backs the series with a **25-year linear warranty** on power output plus an additional product warranty, giving investors predictable returns on their installation. These panels are aimed at residential and commercial projects where durability and low lifetime cost of energy matter most. ## Notable figures - At 18.9% efficiency, this panel is 0.6pp below the \*\*PERC 0-400W\*\* median of 19.4% - At 189.2 W/m², this panel generates 5.2 W/m² less per unit area than \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.36%/°C matches the \*\*PERC 0-400W\*\* median - In the top 93% for efficiency among all PERC panels ## Questions ### Is the Canadian Solar HiKu CS3L-P panel still available for purchase? The HiKu CS3L-P series has been discontinued from active production by Canadian Solar and replaced by newer mono PERC and half-cut models. These panels may still be found through distributors clearing remaining stock, but availability is limited and depends on local inventory. It's worth confirming the manufacturing date and warranty validity before buying. ### What is the maximum power output of the HiKu CS3L-P panel, and is that good for a polycrystalline module? HiKu CS3L-P models reach up to 350 Wp using 120 polycrystalline PERC cells. This output is higher than conventional poly panels in its class, thanks to PERC technology improving light capture at the cell's rear surface. It doesn't match the latest mono half-cut panels, but it's a solid result for lower-cost silicon technology. ### What warranty comes with the Canadian Solar HiKu CS3L-P panels? The manufacturer provides a 12-year product warranty and a 25-year linear power warranty. This means the module should retain a guaranteed percentage of its original rated power even after 25 years of operation. As a tier-1 manufacturer headquartered in Canada, Canadian Solar offers reliable support, though buyers of this discontinued model should confirm current warranty servicing terms with the distributor. ### Does the reinforced frame on the HiKu CS3L-P actually reduce cell microcracks? Yes, the additional crossbars in the frame design reduce module flex under load, which lowers the risk of microcracks forming in the polycrystalline cells over time. This matters because microcracks are a common cause of gradual output degradation in cheaper panels. As a result, the CS3L-P series withstands snow and wind loads better than standard frame constructions in its price class. ### Is the HiKu CS3L-P suitable for roofs in regions with heavy snowfall? Yes, the series was engineered for high mechanical resistance to snow and wind loads, thanks to its reinforced frame with additional crossbars. This makes it a good fit for mountainous regions or areas with harsh winter climates. Before installation, check the maximum load rating in the datasheet for the specific power variant you're using. ### Do CS3L-P panels lose much output in hot summer temperatures? The HiKu CS3L-P panels have a low temperature coefficient of power, meaning less output loss as cell temperature rises above the standard 25°C test condition. In practice, during summer heat, energy production stays more stable than in cheaper modules with a higher temperature coefficient. This is an advantage for roof installations with poor ventilation, where cells tend to heat up more. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Canadian_Solar-Datasheet-HiKu_CS3L-P_EN-3e31f23c14ce.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | -10 W, +1.2 pp | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | -20 W, lighter, +1.0 pp | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | -15 W, +1.0 pp, +5 yr warranty | | [Canadian Solar CS3U-395P](https://comparepv.com/panel/canadian-solar-cs3u-395p) | 395 W | +45 W, heavier, +1.0 pp | | [SunLink LNSU-400M](https://comparepv.com/panel/sunlink-lnsu-400m) | 400 W | +50 W, heavier, +0.9 pp | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | -15 W, +0.9 pp | | [Sunlike Solar LNSF-400M](https://comparepv.com/panel/sunlike-solar-lnsf-400m) | 400 W | +50 W, heavier, +0.9 pp | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | +15 W, +0.8 pp | | [Canadian Solar CS3L-325P](https://comparepv.com/panel/canadian-solar-cs3l-325p) | 325 W | -25 W, -1.3 pp | | [Canadian Solar CS3L-330P](https://comparepv.com/panel/canadian-solar-cs3l-330p) | 330 W | -20 W, -1.1 pp | | [Canadian Solar CS3L-335P](https://comparepv.com/panel/canadian-solar-cs3l-335p) | 335 W | -15 W, -0.8 pp | | [Canadian Solar CS3L-340P](https://comparepv.com/panel/canadian-solar-cs3l-340p) | 340 W | -10 W, -0.5 pp | | [Canadian Solar CS3L-345P](https://comparepv.com/panel/canadian-solar-cs3l-345p) | 345 W | Very close match | | [Canadian Solar CS3L-355P](https://comparepv.com/panel/canadian-solar-cs3l-355p) | 355 W | +0.3 pp | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | +10 W, +0.6 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +160 W, cooler, +6.1 pp | --- Source: https://comparepv.com/panel/canadian-solar-cs3l-350p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.