--- title: "Bruk-Bet PEM.BB-370 370W Solar Panel - Specs & Review | ComparePV" description: "Bruk-Bet PEM.BB-370 370W solar panel. Specs: 20.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/bruk-bet-pem-bb-370" updated: 2026-09-11 --- # Bruk-Bet PEM.BB-370 Strong in heat, no clear weak spot 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Bruk-Bet - **Model:** PEM.BB-370 - **Series:** Perfect Edge - **Rated power:** 370 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 370 W | 380 W | Typical | | | Module efficiency | 20.50% | 19.90% | Strong - top 10% | 11,308 | | Power density | 202.1 | 199.0 | Typical | 11,965 | | Temperature coefficient | -0.324 | -0.350 | Strong - top 5% | 8,509 | | Weight (kg) | 20.0 kg | 21.4 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.50% | 19.90% | Strong - top 10% | 11,308 | | Power density | 202.1 | 199.0 | Typical | 11,965 | | Temperature coefficient | -0.324 | -0.350 | Strong - top 5% | 8,509 | | Weight per kWp | 54.1 | 55.8 | Typical | 8,267 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **-0.324 %/°C temperature coefficient** - Top 5% of the PERC 350-400 W segment, against a median of -0.350. Ranked 8,509th in the whole database. - **20.50% module efficiency** - Top 10% of the PERC 350-400 W segment, against a median of 19.90%. - **Best for:** Residential and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 370 W - **Efficiency:** 20.50 % - **Voltage at Pmax (Vmp):** 34.78 V - **Current at Pmax (Imp):** 10.65 A - **Open-circuit voltage (Voc):** 41.42 V - **Short-circuit current (Isc):** 11.13 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.324 %/degC - **Temperature coefficient of Voc:** -0.259 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 ### Physical - **Length:** 1760 mm - **Width:** 1040 mm - **Thickness:** 40 mm - **Weight:** 20.0 kg - **Area:** 1.83 m2 - **Power density:** 202.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 20 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 83.0 % - **First-year degradation:** 3.08 % - **Annual degradation:** 0.58 % - **Output after 30 years:** 296 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11308 of 14005 | | Power density | 11965 of 14005 | | Temperature coefficient | 8509 of 14005 | | Weight | 8267 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Highest Efficiency Among Peer Comparables** - The 20.5% module efficiency clearly outpaces all peer comparables: Silfab Prime NTC (18.7%), Solitek SOLRIF N (18.34%), and Aptos Solar DNA 120 (20.29%). This translates to measurably higher energy yield per m² of roof area — particularly significant in space-constrained installations. - **Polish Manufacturing – Local Warranty Support and Supply Chain** - Modules are manufactured at the Tarnów facility (plant commissioned in 2011; manufacturer active in the market since 1984). Both product and power warranties are fulfilled directly in Poland, eliminating import-barrier and currency-fluctuation risk and significantly shortening potential claim resolution time. - **Half-Cut 9BB Technology with ARC Coating** - Half-cut cells with 9 busbars (9BB) reduce series resistance and improve partial-shading tolerance compared to standard full-cell designs. The anti-reflective coating (ARC) on the glass increases light absorption at low incidence angles, providing a measurable advantage during winter months. - **Triple Electroluminescence (EL) Testing on the Production Line** - Bruk-Bet applies EL testing at three stages of the production process — a non-standard practice, as most manufacturers perform a single EL test. This enables detection of microcracks and cell defects before modules reach customers, resulting in a lower early-production warranty claim rate. - **25-Year Linear Power Warranty** - The manufacturer provides a linear power warranty for 25 years (warranty\_power\_years: 25), consistent with the Tier-1 market standard. When purchased through authorized partners, an extension of the product warranty to 30 years is available — above average for this segment. ## Cons - **PERC Technology – Not N-Type** - Despite series marketing materials suggesting N-type cells, the technical specification confirms PERC technology. PERC exhibits higher light-induced degradation (LID ~1–2%) and annual degradation (~0.45–0.55%/yr), as well as a less favorable temperature coefficient of power (typically –0.36 to –0.40%/°C) compared to competing N-type TOPCon products. Over a 25-year investment horizon, the cumulative yield difference can reach 3–5% in favor of N-type cells. - **Single Power Class Only (370 Wp)** - The series is offered exclusively at 370 Wp, while the market has shifted decisively toward 400–450 Wp and above. A single power variant limits design flexibility when matching module count to inverter capacity, and may signal that this product is in the declining phase of the manufacturer's portfolio — given that 445–450 Wp models are already being actively sold. - **20-Year Product Warranty – Below the Market Premium** - The standard product warranty is 20 years (warranty\_product\_years: 20), whereas several Tier-1 manufacturers (e.g., Jinko Tiger Neo, LONGi Hi-MO 6) offer 25–30 years as standard. For prosumers planning a 25+ year installation, this may represent a coverage gap that requires purchasing a warranty extension. ## About this series The Bruk-Bet Perfect Edge solar panel series revolutionizes the Polish photovoltaics market by using advanced shingled technology, which completely eliminates traditional gaps between cells. Thanks to the precise overlapping of cells, these modules offer significantly higher efficiency from every square meter of roof surface. It is an ideal solution for investors with limited space who are looking for maximum energy yields. A key differentiator of the series is **shingled cell technology**, which drastically reduces internal resistance and limits the risk of dangerous hotspots. These panels are also characterized by **exceptional resistance to shading**, which in practice means more stable system operation in difficult conditions or near chimneys. The use of **monocrystalline N-type cells** guarantees slower module degradation over time and significantly better performance parameters at high temperatures. The Perfect Edge series was designed with the highest aesthetics in mind, therefore it blends perfectly with modern building architecture. This is **Polish production of a world-class standard**, which effectively competes with global brands through attention to detail and a real, local warranty. The solid frame construction ensures **maximum mechanical strength** against extreme snow loads, making them a reliable choice for demanding prosumers. ## Notable figures - At 20.5% efficiency, this panel is 1.1pp above typical \*\*PERC 0-400W\*\* modules (median: 19.4%) - Power density of 202.1 W/m² packs 7.7 W/m² more into the same footprint vs \*\*PERC 0-400W\*\* median (194.4 W/m²) - At -0.32%/°C (vs median -0.36%/°C), loses ~1% less power in hot conditions - In the top 81% for efficiency among all PERC panels ## Questions ### What is the warranty coverage for Bruk-Bet Perfect Edge panels? The Perfect Edge series comes with a 20-year product warranty and a 25-year linear power output warranty. When installation is carried out by an authorized Bruk-Bet partner, the product warranty may be extended to the full 20-year term. This represents one of the longest warranty commitments offered by a Polish manufacturer, fulfilled locally — with no need to contact foreign service centers. ### What is the shingled cell technology used in the Perfect Edge series, and how does it differ from conventional panels? Shingled cell technology involves overlapping solar cells in a roof-tile fashion, which completely eliminates gaps between cells and removes traditional soldered busbar connections. The result is lower internal resistance, a reduced risk of hotspot formation, and higher power output from the same roof area. In practice, this translates into superior energy yield where installation space is limited. ### Are the Bruk-Bet Perfect Edge 370W panels suitable for a roof with partial shading from a chimney or dormer window? Yes, the Perfect Edge series has been engineered with enhanced shade tolerance in mind. Thanks to shingled cell technology, the module maintains more stable output under partial shading conditions than conventional full-cell panels. Where a chimney or dormer window covers part of the roof, Perfect Edge significantly reduces production losses compared to standard PERC panels in a conventional configuration. ### Are Bruk-Bet Perfect Edge panels manufactured in Poland, and does that translate into higher quality? Yes, Perfect Edge panels are manufactured in Poland by Bruk-Bet Fotowoltaika. Every module undergoes triple electroluminescence (EL) testing to rule out microcracks in the cells, and the glass is coated with an anti-reflective coating (ARC) to maximize light absorption. Domestic production also means genuine, local warranty service and direct access to the manufacturer — with no language barrier or international logistics involved. ### How do the Bruk-Bet Perfect Edge 370W panels perform at high temperatures during summer? The Perfect Edge series utilizes N-type monocrystalline PERC cells, which exhibit a more favorable temperature coefficient than standard P-type cells. This means less power degradation under heat — the panel loses proportionally less efficiency on hot, sunny days, which directly results in higher summer energy yields compared to lower-cost technologies. ### What is the peak power output of the Bruk-Bet Perfect Edge panel, and what system sizes is it recommended for? The peak power output of modules in the Perfect Edge series is 370 Wp. This rating is well suited to both small residential installations (3–5 kWp) and larger prosumer systems. Thanks to its high power density per square meter, the series is particularly recommended for homeowners with limited usable roof area who want to maximize energy production without expanding the footprint of their installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Perfect-Edge-PEMBB-370-ede2440db9f9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | -40 W, lighter, +2.6 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | -40 W, lighter, +2.6 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -50 W, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +30 W, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +30 W, +2.5 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +2.5 pp, +5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.1 pp, +15 yr warranty | | [Bruk-Bet BEM 375 W](https://comparepv.com/panel/bruk-bet-bem-375-w) | 375 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +140 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +125 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +135 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +120 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +130 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/bruk-bet-pem-bb-370 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.