--- title: "Peimar SG325P 325W Solar Panel - Specs & Review | ComparePV" description: "Peimar SG325P 325W solar panel. Specs: 16.74% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/peimar-sg325p" updated: 2026-09-23 --- # Peimar SG325P Warranty pick, weak in heat 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Peimar - **Model:** SG325P - **Series:** Commercial Line - **Rated power:** 325 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) | 325 W | 325 W | Typical | | | Module efficiency | 16.74% | 19.00% | Weak - bottom 12% | 13,521 | | Power density | 167.4 | 190.0 | Weak - bottom 12% | 13,515 | | Temperature coefficient | -0.430 | -0.360 | Weak - bottom 3% | 13,847 | | Weight (kg) | 22.5 kg | 19.0 kg | Weak - bottom 19% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.74% | 19.00% | Weak - bottom 12% | 13,521 | | Power density | 167.4 | 190.0 | Weak - bottom 12% | 13,515 | | Temperature coefficient | -0.430 | -0.360 | Weak - bottom 3% | 13,847 | | Weight per kWp | 69.2 | 60.0 | Weak - bottom 19% | 13,370 | | 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 - **-0.430 %/°C temperature coefficient** - Bottom 3% of the PERC 300-350 W segment, against a median of -0.360. Ranked 13,847th in the whole database. - **167.4 watts per square metre** - Bottom 12% of the PERC 300-350 W segment, against a median of 190.0. - **16.74% module efficiency** - Bottom 12% of the PERC 300-350 W segment, against a median of 19.00%. - **Best for:** Commercial. - **Not ideal for:** Hot climates, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 325 W - **Efficiency:** 16.74 % - **Voltage at Pmax (Vmp):** 36.30 V - **Current at Pmax (Imp):** 9.03 A - **Open-circuit voltage (Voc):** 44.60 V - **Short-circuit current (Isc):** 9.74 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.430 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.047 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell technology:** PERC - **Cell count:** 72 ### Physical - **Length:** 1957 mm - **Width:** 992 mm - **Thickness:** 40 mm - **Weight:** 22.5 kg - **Area:** 1.94 m2 - **Power density:** 167.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 20 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13521 of 14005 | | Power density | 13515 of 14005 | | Temperature coefficient | 13847 of 14005 | | Weight | 13370 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Anti-reflective glass** - The use of anti-reflective glass increases solar radiation absorption, resulting in more stable daily energy yields, including under less favorable angles of incidence. - **Hail resistance and PID-free operation** - The modules are tested for hail resistance and are free from Potential Induced Degradation (PID), preserving rated electrical parameters throughout the service life — important for sites exposed to extreme weather events. - **30-year linear power warranty** - Peimar offers a 30-year linear power warranty alongside a 20-year product warranty, exceeding the standard 25 years offered by many polycrystalline panel makers, such as Jinko's 72 Series Polycrystalline at a comparable 330 Wp power class. - **Fire class I rating and reinforced frame** - Fire resistance class I along with a double-reinforced aluminum frame improve installation safety on industrial and office building roofs, while keeping the module weight low. - **European manufacturer founded in 2012** - Peimar is an Italian manufacturer headquartered in the EU, operating since 2012, which can ease service contact and logistics for EPC firms running commercial projects in Europe compared to non-EU manufacturers. ## Cons - **Production discontinued** - The Commercial Line series has been discontinued, meaning limited availability of matching modules for existing installations and potential future difficulties with warranty servicing. - **Lower efficiency than mono competitors** - Efficiency of 16.74–17% is noticeably lower than monocrystalline panels in the same power class, e.g., JA Solar Monocrystalline80 (23.15%) or Waaree ARKA (19.81%), requiring a larger roof area for the same installed power. - **No Tier 1 bankability status** - The manufacturer does not hold Tier 1 bankable status per BNEF classification, which may complicate obtaining bank financing for larger commercial projects compared to Tier-1 manufacturers such as JA Solar or Jinko Solar. - **No bifacial technology** - The modules are not bifacial, ruling out additional yield from reflected light off the ground, which is available in competing bifacial solutions for commercial flat-roof or ground-mount installations. ## About this series The Commercial Line is a 72-cell polycrystalline module range built for commercial and large-scale installations, where predictable energy yield matters even under demanding light conditions. The panels use 4BB-5BB poly cells, engineered to limit power losses typical of low or diffuse light, delivering more consistent output throughout the day. A key feature of the series is its **anti-reflective glass**, which improves radiation absorption, along with **hailstorm resistance**, important for sites exposed to extreme weather events. The modules are **PID-free**, preserving electrical parameters over their full service life, while Class I fire performance adds an extra layer of safety for installations on industrial and office rooftops. A robust, double-wall aluminum frame simplifies mounting while keeping the panel lightweight. The whole series is backed by a **30-year linear power warranty**, making it an appealing choice for investors and EPC contractors looking for a proven, European-made solution with low operational risk for commercial-scale projects. ## Notable figures - At 16.7% efficiency, this panel is 2.7pp below the \*\*PERC 0-400W\*\* median of 19.4% - 167.4 W/m² power density is 27.0 W/m² below \*\*PERC 0-400W\*\* median (194.4 W/m²) - requires larger installation area - Temperature coefficient of -0.43%/°C is 0.07pp worse than \*\*PERC 0-400W\*\* median (-0.36%/°C) - higher losses in summer heat - 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 - #13521 for efficiency, #13847 for temperature performance out of 14005 panels ## Questions ### Are Peimar Commercial Line panels still available for purchase? The Commercial Line series has been discontinued by Peimar and replaced by newer module models. Availability is now limited to remaining distributor stock. For new commercial projects, it's worth asking about the manufacturer's current equivalent, while existing installations can still rely on warranty service without changes. ### What warranty applies to Peimar Commercial Line panels? The modules come with a 20-year product warranty and a 30-year linear power output warranty. This means the manufacturer guarantees a defined performance level over three decades, which is a standard requirement for commercial installations that need predictable ROI. ### How do 4BB-5BB poly cells differ from newer PERC or half-cut technology? 4BB-5BB polycrystalline cells are an older but proven solution with fewer busbars than modern half-cut or TOPCon panels. They offer stable performance and lower production costs but fall behind newer technologies in efficiency and microcrack resistance. The Commercial Line suits projects prioritizing reliability over maximum unit power. ### Are Commercial Line panels suitable for roofs exposed to hail? Yes, this series has confirmed hail resistance, which matters for industrial and warehouse roofs exposed to extreme weather events. Additionally, the anti-reflective glass increases radiation absorption, improving energy production stability regardless of weather conditions. ### Do Peimar Commercial Line panels lose power under low irradiance? The module design was optimized to reduce power losses under weak or diffuse light, resulting in more stable daily energy yields, including under cloud cover. This is a key advantage for large-scale projects where predictable energy production matters more than peak power under ideal conditions. ### Are Commercial Line modules safe to install on office building roofs? Yes, the panels carry a Fire Class I rating, required for installations on commercial and office building roofs. They are also PID-free, maintaining electrical parameters throughout their service life, while the reinforced double aluminum frame ensures structural durability at a relatively low weight. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Peimar-SG325P-SG330P-463b49d468f6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Cooler, +3.3 pp, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Cooler, +3.2 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | +10 W, cooler, +3.2 pp | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Cooler, +3.0 pp, -5 yr warranty | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | Cooler, +3.0 pp, -5 yr warranty | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | Cooler, +2.9 pp, -5 yr warranty | | [Canadian Solar CS3L-360P](https://comparepv.com/panel/canadian-solar-cs3l-360p) | 360 W | Cooler, +2.8 pp, -5 yr warranty | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | Cooler, +2.8 pp, -5 yr warranty | | [Peimar SG330P](https://comparepv.com/panel/peimar-sg330p) | 330 W | +0.3 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +150 W, cooler, +7.3 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +145 W, cooler, +7.0 pp | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | +140 W, cooler, +6.8 pp | | [Maxeon SPR-MAX6-440](https://comparepv.com/panel/maxeon-spr-max6-440) | 440 W | +115 W, cooler, +6.1 pp | | [Maxeon SPR-MAX6-435](https://comparepv.com/panel/maxeon-spr-max6-435) | 435 W | +110 W, cooler, +5.8 pp | | [Lina Energy LEPV 132 ULTRA PREMIUM BLACK 440Wp (LEPV 440)](https://comparepv.com/panel/lina-energy-lepv-132-ultra-premium-black-440wp-lepv-440) | 440 W | +115 W, cooler, +5.6 pp | | [JA Solar NS-420MH-80](https://comparepv.com/panel/ja-solar-ns-420mh-80) | 420 W | +95 W, cooler, +5.5 pp | --- Source: https://comparepv.com/panel/peimar-sg325p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.