--- title: "JS Solar JS325P 325W Solar Panel - Specs & Review | ComparePV" description: "JS Solar JS325P 325W solar panel. Specs: 16.70% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/js-solar-js325p" updated: 2026-09-11 --- # JS Solar JS325P Middle of its segment, weak in heat 2,867 panels in the 225-425 W band, all technologies ## Identity - **Manufacturer:** JS Solar - **Model:** JS325P - **Series:** 72 SERIES POLYCRYSTALLINE PHOTOVOLTAIC MODULES - **Rated power:** 325 W - **Cell technology:** Polycrystalline ## How it compares Compared against 225-425 W band, all technologies (2867 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 325 W | 390 W | Weak - bottom 16% | | | Module efficiency | 16.70% | 20.20% | Weak - bottom 9% | 13,522 | | Power density | 167.5 | 202.1 | Weak - bottom 10% | 13,505 | | Temperature coefficient | -0.420 | -0.350 | Weak - bottom 3% | 13,796 | | Weight (kg) | 23.5 kg | 21.1 kg | Weak - bottom 9% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.70% | 20.20% | Weak - bottom 9% | 13,522 | | Power density | 167.5 | 202.1 | Weak - bottom 10% | 13,505 | | Temperature coefficient | -0.420 | -0.350 | Weak - bottom 3% | 13,796 | | Weight per kWp | 72.3 | 56.0 | Weak - bottom 9% | 13,508 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **-0.420 %/°C temperature coefficient** - Bottom 3% of the 225-425 W band, against a median of -0.350. Ranked 13,796th in the whole database. - **72.3 kg per kWp** - Bottom 9% of the 225-425 W band, against a median of 56.0. Ranked 13,508th in the whole database. - **16.70% module efficiency** - Bottom 9% of the 225-425 W band, against a median of 20.20%. Ranked 13,522nd in the whole database. - **Best for:** Commercial. - **Not ideal for:** Hot climates, weight-limited structures and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 325 W - **Efficiency:** 16.70 % - **Voltage at Pmax (Vmp):** 37.41 V - **Current at Pmax (Imp):** 8.69 A - **Open-circuit voltage (Voc):** 46.21 V - **Short-circuit current (Isc):** 9.18 A ### Temperature - **Temperature coefficient of Pmax:** -0.420 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.060 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell count:** 72 ### Physical - **Length:** 1956 mm - **Width:** 992 mm - **Thickness:** 40 mm - **Weight:** 23.5 kg - **Area:** 1.94 m2 - **Power density:** 167.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.2 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.70 % - **Output after 30 years:** 249 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13522 of 14005 | | Power density | 13505 of 14005 | | Temperature coefficient | 13796 of 14005 | | Weight | 13508 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **72-cell layout reduces BoS costs** - The 72-cell configuration produces a higher MPP voltage (~36–38 V vs ~30 V in 60-cell modules), which in utility-scale and farm installations directly shortens DC cable runs and reduces the number of connectors required, lowering Balance of System costs by an estimated 8–12% compared to topologies built around 60-cell modules. - **Certified PID resistance** - The series carries certified resistance to Potential Induced Degradation (PID), critical in utility-scale systems operating at 1,000–1,500 V DC. This limits the risk of permanent power loss caused by current leakage through the frame — a failure mode that can exceed 30% degradation over 5 years in non-PID-resistant modules. - **25-year linear power warranty** - The manufacturer provides a 25-year linear power output warranty, consistent with the commercial-segment market standard. Combined with a 10-year product warranty, this package covers the full financing cycle typical of industrial-scale PV projects. - **Commercial-grade mechanical durability** - The anodized aluminum frame and high-transmittance tempered glass provide snow and wind load resistance in line with IEC 61215 certification requirements, making the series suitable for open-field applications (agri-PV, ground-mounted farms) in Central European climate conditions. ## Cons - **Series discontinued** - The JS Solar 72 Series Polycrystalline is a discontinued product line. This means limited module availability for replenishment in case of failure, no active manufacturer technical support for this series, and difficulty maintaining parameter uniformity in installations expanded in the future. - **Efficiency 15.9–17% — well below peers** - The series' peak efficiency (17%) matches only the lowest-tier peer: Jinko Solar 72 Series Poly reaches the same 17%, while Waaree ARKA achieves 19.81% (+2.8 pp) and JA Solar Monocrystalline80 hits 23.15% (+6.2 pp). In practice, this requires ~20–35% more module area to reach the same installed capacity as monocrystalline PERC/TOPCon solutions. - **Manufacturer absent from BNEF Tier-1 list** - Yixing JS Solar Co., Ltd. does not appear on the BNEF bankable manufacturers list (Q1 2026). The absence of Tier-1 status significantly complicates or prevents bank financing and project finance for utility-scale PV farms, where lenders and insurers require modules from manufacturers with a confirmed bankability rating — a standard requirement for projects above 1 MWp. - **Polycrystalline technology being displaced** - Polycrystalline modules account for less than 5% of new PV installations in 2025 (industry data), and leading manufacturers (JA Solar, Jinko, LONGi) are phasing out the technology in favor of mono PERC and TOPCon. The absence of a bifacial variant in the JS Solar 72P series further excludes it from a commercial segment where bifacial mono has become the standard, delivering 5–25% higher energy yield from the module's rear side. ## About this series JS Solar 72 SERIES POLYCRYSTALLINE PHOTOVOLTAIC MODULES are an advanced solution designed to maximize efficiency in large-scale commercial installations and solar farms. The use of **polycrystalline cell technology with high-purity silicon** allows for stable system operation even in variable sunlight conditions, which is crucial for the Polish climate. The design based on 72 cells translates into higher system voltage, which directly reduces cabling and mounting hardware costs for large-scale projects. This series stands out with its **increased resistance to potential-induced degradation (PID)**, which guarantees long-term maintenance of technical parameters and investment security. A solid anodized aluminum frame and tempered glass with high light transmittance ensure **exceptional mechanical strength** against snow and wind loads. This product is dedicated to investors seeking an optimal price-to-quality ratio, where **reliability in difficult industrial conditions** plays a key role. Unlike standard modules, the JS Solar 72 series offers excellent heat dissipation and an optimized surface structure, which minimizes energy losses resulting from dirt. It is a proven choice for the agro sector and large enterprises that rely on the **proven durability of polycrystalline technology** in a modern version. ## Notable figures - At 16.7% efficiency, this panel is 5.1pp below the \*\*database\*\* median of 21.8% - 167.5 W/m² power density is 50.6 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.42%/°C temperature coefficient - 0.12pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 23.5 kg, this panel is 3.0 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - #13522 for efficiency, #13796 for temperature performance out of 14005 panels ## Questions ### Is the JS Solar 72 Series Polycrystalline module still available for purchase? The JS Solar 72 Series Polycrystalline has been discontinued and is no longer actively manufactured. Some units may still be available through select distributors with remaining stock, but supply is very limited. If you need a module with a similar specification (polycrystalline technology, 72-cell layout, ~330 Wp output), we recommend exploring current product lines from other manufacturers. ### What warranty does the JS Solar 72 Series come with, and what does it cover? The JS Solar 72 Series carries a 10-year product warranty covering materials and workmanship, plus a 25-year linear power output warranty. After 25 years of operation, the module should retain at least 80% of its rated 330 Wp output. It's worth noting that JS Solar is not ranked as a Tier 1 manufacturer by leading energy finance institutions, which may affect project bankability. ### Is 330 Wp per panel enough for a large commercial solar installation? At 330 Wp, the JS Solar 72 Series is sized for utility-scale and commercial projects rather than residential rooftops. The 72-cell configuration produces a higher Voc and Vmpp than standard 60-cell panels, enabling longer strings per MPPT channel. This directly reduces DC wiring runs and overall BoS costs, making the series cost-effective for ground-mount farms and large industrial facilities. ### How does a 72-cell JS Solar module differ from a standard 60-cell panel? A 72-cell module operates at a higher open-circuit voltage and maximum power point voltage than a 60-cell panel of similar wattage. In practice, this allows more modules per string before hitting the inverter's voltage ceiling, lowering wiring and BoS costs at scale. The trade-off is larger physical dimensions and greater weight, which makes the JS Solar 72 Series better suited to ground-mount and industrial installations than residential rooftops. ### Are the JS Solar 72 Series panels protected against PID, and why does it matter? Yes, the JS Solar 72 Series features enhanced resistance to PID (Potential Induced Degradation). This is especially important in high-voltage systems operating above 1,000 V DC, where voltage stress between cells and the grounded frame can cause irreversible power loss. Without PID protection, efficiency degradation of 10–15% within the first few years of operation is possible, particularly in Poland's humid climate. ### Does polycrystalline technology in the JS Solar 72 Series perform well under Poland's cloudy conditions? Polycrystalline cells generate power under diffuse irradiance, which is common during Polish autumn and winter months. Their low-light performance is comparable to entry-level monocrystalline modules. The JS Solar 72 Series also uses high-transmittance tempered glass and an optimized surface structure that reduces energy losses from partial shading and soiling, supporting stable seasonal yields in temperate climates. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/JS157P72-330W-a4814e6cd1e5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Cooler, lighter, +3.4 pp | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Cooler, lighter, +3.2 pp | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | Cooler, +3.2 pp, +5 yr warranty | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Cooler, lighter, +3.1 pp | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | +40 W, cooler, +3.0 pp | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Cooler, lighter, +2.9 pp | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | +35 W, cooler, +2.8 pp | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | Cooler, lighter, +2.8 pp | | [JS Solar JS310P](https://comparepv.com/panel/js-solar-js310p) | 310 W | -15 W, -0.8 pp | | [JS Solar JS315P](https://comparepv.com/panel/js-solar-js315p) | 315 W | -10 W, -0.5 pp | | [JS Solar JS320P](https://comparepv.com/panel/js-solar-js320p) | 320 W | -0.3 pp | | [JS Solar JS330P](https://comparepv.com/panel/js-solar-js330p) | 330 W | +0.3 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +150 W, +7.3 pp, +15 yr warranty | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | Cooler, +7.0 pp, +15 yr warranty | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | Cooler, +6.8 pp, +15 yr warranty | | [Maxeon SPR-MAX6-440](https://comparepv.com/panel/maxeon-spr-max6-440) | 440 W | Cooler, +6.1 pp, +15 yr warranty | --- Source: https://comparepv.com/panel/js-solar-js325p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.