--- title: "Peimar SA500M (FB) 500W Solar Panel - Specs & Review | ComparePV" description: "Peimar SA500M (FB) 500W solar panel. Specs: 21.33% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/peimar-sa500m-fb" updated: 2026-09-11 --- # Peimar SA500M (FB) Strong in heat, no clear weak spot 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Peimar - **Model:** SA500M (FB) - **Series:** S Series - **Rated power:** 500 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 500 W | 535 W | Weak - bottom 4% | | | 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 (kg) | 23.4 kg | 28.4 kg | Strong - top 3% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | ### 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. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 500 W - **Efficiency:** 21.33 % - **Voltage at Pmax (Vmp):** 37.77 V - **Current at Pmax (Imp):** 13.24 A - **Open-circuit voltage (Voc):** 46.46 V - **Short-circuit current (Isc):** 14.03 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 66 ### Physical - **Length:** 2067 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 23.4 kg - **Area:** 2.34 m2 - **Power density:** 213.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8476 of 14005 | | Power density | 8438 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1355 of 14005 | | Warranty | 21 of 14005 | ## Pros - **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. ## Cons - **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. ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/peimar-en-sa500m-fb-b628a77aa1a5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +10 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +60 W, cooler, +3.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +55 W, cooler, +3.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +50 W, lighter, +3.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +45 W, heavier, +2.9 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +45 W, cooler, +2.9 pp | | [Jinko Solar JKM540-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm540-54ql6-dv-f1-eu) | 540 W | +40 W, heavier, +2.7 pp | --- Source: https://comparepv.com/panel/peimar-sa500m-fb Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.