--- title: "Canadian Solar CS3U-350PB-AG Solar Panel: Specs & Datasheet | ComparePV" description: "Canadian Solar CS3U-350PB-AG solar panel. Specs: 17.40% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/canadian-solar-cs3u-350pb-ag" image: "https://comparepv.com/og/panel/canadian-solar-cs3u-350pb-ag.png" updated: 2026-09-11 --- # Canadian Solar CS3U-350PB-AG Warranty pick, modest efficiency 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Canadian Solar - **Model:** CS3U-350PB-AG - **Series:** BiKu CS3U-PB-AG - **Rated power:** 350 W - **Cell technology:** PERC - **Bifacial:** yes ## 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 | 17.40% | 19.90% | Weak - bottom 1% | 13,475 | | Power density | 174.5 | 199.0 | Weak - bottom 1% | 13,460 | | Temperature coefficient | -0.360 | -0.350 | Typical | 12,425 | | Weight (kg) | 25.9 kg | 21.4 kg | Weak - bottom 2% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 17.40% | 19.90% | Weak - bottom 1% | 13,475 | | Power density | 174.5 | 199.0 | Weak - bottom 1% | 13,460 | | Temperature coefficient | -0.360 | -0.350 | Typical | 12,425 | | Weight per kWp | 74.0 | 55.8 | Weak - bottom 2% | 13,696 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Strengths - **30 year performance warranty** - Top 13% of the PERC 350-400 W segment, against a median of 25 yrs. ### Watch out for - **17.40% module efficiency** - Bottom 1% of the PERC 350-400 W segment, against a median of 19.90%. Ranked 13,475th in the whole database. - **174.5 watts per square metre** - Bottom 1% of the PERC 350-400 W segment, against a median of 199.0. Ranked 13,460th in the whole database. - **74.0 kg per kWp** - Bottom 2% of the PERC 350-400 W segment, against a median of 55.8. Ranked 13,696th in the whole database. - **Best for:** Commercial and agrivoltaic. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 350 W - **Efficiency:** 17.40 % - **Voltage at Pmax (Vmp):** 39.20 V - **Current at Pmax (Imp):** 8.94 A - **Open-circuit voltage (Voc):** 46.60 V - **Short-circuit current (Isc):** 9.51 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:** 41 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2022 mm - **Width:** 992 mm - **Thickness:** 30 mm - **Weight:** 25.9 kg - **Area:** 2.01 m2 - **Power density:** 174.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13475 of 14129 | | Power density | 13460 of 14129 | | Temperature coefficient | 12425 of 14129 | | Weight | 13696 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Bifacial technology with up to 30% gain** - Half-cut polycrystalline cells in a 5BB/MBB layout combined with a dual tempered-glass structure enable rear-side energy gains of up to 30% of nominal power on reflective surfaces, meaningfully reducing LCOE compared to monofacial panels. - **Low power temperature coefficient** - The Pmax temperature coefficient is -0.36%/°C per the manufacturer's official datasheet, delivering more stable output at high operating temperatures than typical modules from the same era (around -0.40 to -0.45%/°C). - **Reinforced frame construction** - A 30mm anodized aluminum frame withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa, making the series suitable for installations in demanding climates with heavy snowfall or strong winds. - **Half-cut cell design reduces losses** - Splitting cells into halves lowers resistive (I²R) losses and improves partial-shading tolerance, resulting in lower hot-spot risk compared to full-size poly cells. - **Bankable Tier-1 manufacturer** - Canadian Solar has operated since 2001 and is classified as a Tier-1 bankable manufacturer (BNEF), easing project financing and increasing credibility with institutional investors, even though the BiKu CS3U-PB-AG series itself has been discontinued. ## Cons - **Production discontinued in 2020** - The BiKu CS3U-PB-AG series launched in 2018 and was discontinued in 2020, meaning limited availability of replacement parts and constrained warranty servicing over the 30-year power warranty term. - **Efficiency below segment median** - Efficiency of 17.4-19.2% is notably lower than comparable 385 Wp panels in the same power range - Solarwatt Vision GM 3.0 pure (20.7%), Suntech Ultra S mini (21.1%), and JA Solar JAM60D20 (20.6%) - meaning a larger mounting area is needed for the same installed capacity. - **Older polycrystalline cell technology** - The module relies on poly cells, which even at launch (2018) were already being superseded by mono PERC and TOPCon dominant among the cited peer comparables, limiting further yield optimization potential relative to newer series. - **Shorter product warranty** - The 12-year product warranty is shorter than the 15-25 years now standard among many Tier-1 manufacturers, increasing investor risk exposure for component failures after year 12 within the 30-year system lifespan. ## About this series The BiKu CS3U-PB-AG series is a new generation of **bifacial** solar modules, designed for installations where capturing every ray of light hitting both the front and rear of the panel truly matters. Thanks to dual heat-strengthened glass and half-cut polycrystalline cells arranged with 5BB or MBB busbar technology, the module **gains up to 30% additional energy from the rear side**, meaningfully lowering the levelized cost of energy compared to conventional monofacial panels. This makes it especially attractive for ground-mount solar farms on reflective surfaces, industrial rooftops, and any structure where reflected light represents real, untapped potential. The panel also stands out for its **low temperature coefficient** and reduced operating temperature, translating into more stable output on hot days. The half-cut cell design reduces resistive losses and minimizes overheating risk in partially shaded areas, while the sturdy anodized aluminum frame delivers **high resistance to snow and wind loads**. It's a strong choice for investors seeking higher returns per unit of mounting area without compromising on reliability or long-term system performance. ## Notable figures - Efficiency of 17.4% is 2.1pp below the \*\*PERC 0-400W\*\* median (19.4%) - Power density of 174.5 W/m² is 19.9 W/m² below \*\*PERC 0-400W\*\* median (194.4 W/m²) - needs more roof space - Temperature coefficient of -0.36%/°C matches the \*\*PERC 0-400W\*\* median - Weight of 25.9 kg is 5.4 kg above \*\*PERC 0-400W\*\* median (20.5 kg) - verify structural support - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### How does the BiKu CS3U-PB-AG panel differ from a standard monofacial panel? The key difference is the dual tempered glass construction instead of a rear backsheet, allowing the module to generate energy from its rear side as well. In practice, this can mean up to 30% additional energy yield with proper installation over reflective surfaces such as gravel, white roofing, or snow. The resulting cost per kilowatt-hour is lower than for classic monofacial panels of the same rated power. ### What is the maximum power output of the BiKu CS3U-385-PB-AG and what does the real yield depend on? The 385 Wp version is the top variant in this series. Actual yield depends on ground albedo beneath the array, mounting height above ground, and tilt angle. The lighter and more reflective the surface, the greater the additional rear-side energy gain, which can reach up to 30% above the front-side rated power. ### What warranty applies to the BiKu CS3U-PB-AG panels? Canadian Solar provides a 12-year product warranty along with a 30-year linear power output warranty. Canadian Solar is a Tier 1 manufacturer, which further increases confidence that these warranty commitments will be honored throughout the system's operating life. ### Are BiKu CS3U-PB-AG panels suitable for solar farms and ground-mounted installations? Yes, this is one of the primary applications for this series. Ground-mounted systems on light-colored surfaces such as gravel or grass make full use of the bifacial potential, since reflected light reaches the rear glass of the module. The sturdy anodized aluminum frame also provides high resistance to snow and wind loads, which matters for large-scale solar farms. ### Do BiKu CS3U-PB-AG panels perform well on hot days? Yes, this series features a low power temperature coefficient and reduced operating temperature thanks to its dual-glass construction and half-cut cells. This means a smaller performance drop during high summer temperatures compared to typical monofacial panels, resulting in more stable energy yield throughout the year. ### Is the BiKu CS3U-PB-AG series still available for purchase? No, the BiKu CS3U-PB-AG series has been discontinued from Canadian Solar's current production lineup and replaced by newer bifacial module generations. Availability is now limited to remaining distributor stock. The product and power warranties, however, remain fully valid for already installed units. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Canadian_Solar-Datasheet-BiKu_CS3U-PB-AG_EN-bda24f2e9bf4.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Lighter, +2.7 pp, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Lighter, +2.5 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | -15 W, lighter, +2.5 pp | | [Canadian Solar CS3U-395P](https://comparepv.com/panel/canadian-solar-cs3u-395p) | 395 W | +45 W, +2.5 pp, -5 yr warranty | | [SunLink LNSU-400M](https://comparepv.com/panel/sunlink-lnsu-400m) | 400 W | +50 W, +2.4 pp, -5 yr warranty | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Lighter, +2.4 pp, -5 yr warranty | | [Sunlike Solar LNSF-400M](https://comparepv.com/panel/sunlike-solar-lnsf-400m) | 400 W | +50 W, +2.4 pp, -5 yr warranty | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | Lighter, +2.3 pp, -5 yr warranty | | [Canadian Solar CS3U-355PB-AG](https://comparepv.com/panel/canadian-solar-cs3u-355pb-ag) | 355 W | +0.3 pp | | [Canadian Solar CS3U-360PB-AG](https://comparepv.com/panel/canadian-solar-cs3u-360pb-ag) | 360 W | +10 W, +0.5 pp | | [Canadian Solar CS3U-365PB-AG](https://comparepv.com/panel/canadian-solar-cs3u-365pb-ag) | 365 W | +15 W, +0.8 pp | | [Canadian Solar CS3U-370PB-AG](https://comparepv.com/panel/canadian-solar-cs3u-370pb-ag) | 370 W | +20 W, +1.0 pp | | [Canadian Solar CS3U-375MB-AG](https://comparepv.com/panel/canadian-solar-cs3u-375mb-ag) | 375 W | +25 W, +1.3 pp | | [Canadian Solar CS3U-380MB-AG](https://comparepv.com/panel/canadian-solar-cs3u-380mb-ag) | 380 W | +30 W, +1.5 pp | | [Canadian Solar CS3U-385MB-AG](https://comparepv.com/panel/canadian-solar-cs3u-385mb-ag) | 385 W | +35 W, +1.8 pp | | [MY Solar MS480NC-HJTPBFT](https://comparepv.com/panel/my-solar-ms480nc-hjtpbft) | 480 W | +130 W, cooler, +4.7 pp | --- Source: https://comparepv.com/panel/canadian-solar-cs3u-350pb-ag Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.