Skip to main content
Peimar Brand review

SG325P

325 Wp PERC
ComparePV verdict

Warranty pick, weak in heat

Rank 13,109 of 14,005
Compare panels Datasheet PDF
Power (Wp)
325
Typical for its class
Efficiency (%)
16.74
Weak · bottom 12%
Density (Wp/m²)
167.4
Weak · bottom 12%
Temp (%/°C)
-0.430
Weak · bottom 3%
Weight (kg)
22.5
Weak · 3.5 kg above median
Warranty (yrs)
30
Strong · top 15%

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.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 7 caution
Best for

Commercial.

Not ideal for

Hot climates, roofs where every square metre has to count and tight roof space.

Strengths
30 year performance warranty

Top 15% of the PERC 300-350 W segment, against a median of 25 yrs.

Watch-outs
-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%.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 325 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 16.74 % Weak Segment median 19.00%
Vmpp · Impp 36.30 V · 9.03 A Operating point at max power
Voc · Isc 44.60 V · 9.74 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1957×992×40 mm · 1.94 m² of roof
Weight 22.5 kg Weak Weak · 3.5 kg above median
Cells 72 · PERC Polycrystalline
Coefficient Pmax -0.430 %/°C Weak bottom 3% of its segment
Coefficient Voc · Isc -0.320 · 0.047 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 20 years Hardware defects only
Performance warranty 30 years Strong top 15% · median 25 yrs

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.430 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Peimar SG325P 325 W 16.74% -0.430 22.5 kg You are here
LNSK-340M 340 W 20.08% -0.360 21.0 kg Cooler, +3.3 pp, -5 yr warranty
CS3K-330P 330 W 19.90% -0.360 18.5 kg Cooler, +3.2 pp, -5 yr warranty
CS3K-335MB-AG 335 W 19.90% -0.360 22.3 kg +10 W, cooler, +3.2 pp
LNSK-335M 335 W 19.78% -0.360 21.0 kg Cooler, +3.0 pp, -5 yr warranty
CS3L-365P 365 W 19.70% -0.360 21.1 kg Cooler, +3.0 pp, -5 yr warranty
CS3K-325P 325 W 19.60% -0.360 18.5 kg Cooler, +2.9 pp, -5 yr warranty
CS3L-360P 360 W 19.50% -0.360 21.1 kg Cooler, +2.8 pp, -5 yr warranty
LNSK-330M 330 W 19.49% -0.360 21.0 kg Cooler, +2.8 pp, -5 yr warranty
SG330P 330 W 17.00% -0.430 22.5 kg +0.3 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +150 W, cooler, +7.3 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +145 W, cooler, +7.0 pp
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg +140 W, cooler, +6.8 pp
SPR-MAX6-440 440 W 22.80% -0.290 20.9 kg +115 W, cooler, +6.1 pp
SPR-MAX6-435 435 W 22.50% -0.290 20.9 kg +110 W, cooler, +5.8 pp
LEPV 132 ULTRA PREMIUM BLACK 440Wp (LEPV 440) 440 W 22.37% -0.290 21.0 kg +115 W, cooler, +5.6 pp
NS-420MH-80 420 W 22.28% -0.290 20.0 kg +95 W, cooler, +5.5 pp

Found 144 panels of the same or similar size to this one, within ±10 mm. See them here Found 232 panels of the same or similar size to this one, within ±25 mm. See them here Found 366 panels of the same or similar size to this one, within ±50 mm. See them here Found 550 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
Add to compare