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Peimar Brand review

SA500M (FB)

500 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 4,753 of 14,005
Compare panels Datasheet PDF
Power (Wp)
500
Weak · bottom 4%
Efficiency (%)
21.33
Strong · top 3%
Density (Wp/m²)
213.3
Strong · top 3%
Temp (%/°C)
-0.290
Strong · top 1%
Weight (kg)
23.4
Strong · 5.0 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The Peimar S Series consists of modules based on PERC technology, designed for high operational efficiency in real rooftop conditions - even when durability, fire safety, and easy installation are key considerations. The use of anti-reflective glass improves light utilization under varying angles, which will be particularly appreciated in installations on roofs with less ideal exposure. The design features a compact, reinforced frame, which facilitates stable mounting and work in demanding wind and snow conditions. A practical advantage is the ability to anchor on the shorter side - this is an advantage in projects where the spacing of rafters, the arrangement of hooks, or an unusual roof format limits you. The S Series also offers high fire resistance, helping to meet the requirements for residential and commercial buildings. This is a good choice for investors who want predictable, robust, and "hassle-free" panels.

Ranking

706 panels in the segment PERC 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.33% 20.90% Strong · top 3% 8,476
Power density 213.3 209.0 Strong · top 3% 8,438
Temperature coefficient -0.290 -0.350 Strong · top 1% 2,165
Weight per kWp 46.8 53.0 Strong · top 3% 1,355
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

8 positive · 2 caution
Best for

Residential and commercial.

Strengths
-0.290 %/°C temperature coefficient

Top 1% of the PERC 500-550 W segment, against a median of -0.350. Ranked 2,165th in the whole database.

21.33% module efficiency

Top 3% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 8,476th in the whole database.

213.3 watts per square metre

Top 3% of the PERC 500-550 W segment, against a median of 209.0. Ranked 8,438th in the whole database.

What owners get
30-year linear warranty

The manufacturer offers a 30-year product warranty and a 30-year linear power warranty, exceeding the market-standard 25 years, backed additionally by a QBE Insurance policy.

High fire reaction class

The module holds a B-s1,d0 rating per EN 13501-1 and BROOF(t1) per EN 13501-5 (Class 1 UNI 9177), meeting stricter fire safety requirements for residential and commercial buildings, exceeding the typical Class C found in the segment.

Reinforced frame for high loads

The compact, reinforced frame design ensures stable mounting under demanding wind and snow load conditions, which matters for roofs exposed to heavy climatic stress.

Short-side mounting capability

The panel can also be anchored along its shorter edge, giving an advantage in projects with limited rafter spacing, non-standard hook layout, or unconventional roof formats.

European manufacturing (Made in Italy)

The SA500M module is manufactured in Italy, offering investors a shorter EU supply chain and easier quality verification compared to many peers sourced outside Europe.

Trade-offs
No BNEF Tier 1 bankability status

Peimar is not listed as a Tier 1 manufacturer under BNEF methodology, which may limit access to more favorable bank financing for larger commercial projects compared to Tier 1-listed manufacturers.

Lower efficiency than some peers

At 21.33% efficiency for a 500 Wp module, the series trails Selfa SV120M.2.4 (22.6%) and Gokin GK-3-54HGF (24.5%) in the same power class, meaning a larger mounting area is required for equivalent energy yield.

Notes from the database
  • At 21.3% efficiency, this panel is on par with typical PERC 500-550W modules
  • Power density of 213.3 W/m² packs 4.3 W/m² more into the same footprint vs PERC 500-550W median (209.0 W/m²)
  • At -0.29%/°C (vs median -0.35%/°C), loses ~2% less power in hot conditions
  • Weight of 23.4 kg (5.0 kg below PERC 500-550W median of 28.4 kg) allows easier transport and roof mounting
  • #8476 for efficiency, #2165 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 500 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.33 % Strong Segment median 20.90%
Vmpp · Impp 37.77 V · 13.24 A Operating point at max power
Voc · Isc 46.46 V · 14.03 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2067×1134×35 mm · 2.34 m² of roof
Weight 23.4 kg Strong Strong · 5.0 kg below median
Cells 66 · PERC Monocrystalline
Coefficient Pmax -0.290 %/°C Strong top 1% of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 30 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 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
-0.290 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Peimar SA500M (FB) 500 W 21.33% -0.290 23.4 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +10 W, cooler, +3.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +3.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +3.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +3.2 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, lighter, +3.2 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +60 W, cooler, +3.5 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +55 W, cooler, +3.3 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +50 W, lighter, +3.1 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +45 W, heavier, +2.9 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +45 W, cooler, +2.9 pp
JKM540-54QL6-DV-F1-EU 540 W 24.05% -0.260 27.5 kg +40 W, heavier, +2.7 pp

Found 13 panels of the same or similar size to this one, within ±10 mm. See them here Found 24 panels of the same or similar size to this one, within ±25 mm. See them here Found 415 panels of the same or similar size to this one, within ±50 mm. See them here Found 887 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Peimar S Series come with?
The Peimar S Series includes a 30-year product warranty covering defects and workmanship, along with a 30-year linear power output warranty. The linear guarantee means the performance degradation curve is predefined and predictable over three decades. For a PERC module line, this is among the longest combined warranties available and reflects the manufacturer's confidence in the series' long-term durability.
What is PERC technology and why does it matter for the Peimar S Series?
PERC (Passivated Emitter Rear Cell) adds a reflective passivation layer to the rear of each cell, bouncing unabsorbed photons back into the silicon for a second absorption pass. In the S Series, this pushes panel efficiency above 21%, meaning more kilowatt-hours per square meter of rooftop compared to standard mono cells. It is particularly valuable when available roof space is limited and every watt of output counts.
Can Peimar S Series panels be installed on roofs with non-standard rafter spacing?
Yes, the S Series supports clamping along the module's short side, a feature not found on every panel. When rafter spacing, hook layout, or roof geometry prevents conventional long-side mounting, the reinforced compact frame maintains full mechanical integrity regardless of mounting axis. This flexibility can simplify structural planning and reduce hardware costs on atypical roof formats.
Does the Peimar S Series meet fire safety requirements for residential and commercial buildings?
The S Series carries a high fire reaction class rating, making it easier to satisfy building permit and fire code requirements for both residential and commercial projects. The 3.2 mm tempered anti-reflective glass also provides added mechanical and thermal resistance. For installers working on projects subject to strict fire safety standards, this classification is a practical compliance advantage worth factoring into panel selection.
How does the Peimar S Series perform on shaded or sub-optimally oriented roofs?
Anti-reflective glass improves light capture at oblique angles of incidence, benefiting installations on roof planes with less-than-ideal azimuth or tilt. The 132 M10 half-cut PERC cells reduce mismatch losses under partial shading: each cell half operates semi-independently, limiting the impact of shadows from chimneys, dormers, or nearby obstacles on total system output compared to conventional full-cell designs.
Where are Peimar S Series panels manufactured and is the brand reliable?
Peimar is an Italian manufacturer headquartered in Brescia with a fully automated production facility in Castegnato, operating since 2007. The S Series reaches up to 500 Wp with efficiency above 21% and is backed by a 30-year product and power warranty. The brand is not currently listed among Tier 1 manufacturers by major market analysts, but European origin and long dual warranties are meaningful indicators for investors prioritizing predictability and quality assurance.
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