Middle of its segment, needs the roof space
The Bruk-Bet PEM.GB series are glass-glass modules designed for stable operation for many years in Polish conditions - both on roofs and in larger installations. Thanks to N-Type monocrystalline cells, the modules better handle performance drops over time and maintain high energy production even with lower sunlight. The double-glass construction increases resistance to weather and minor damage, which effectively reduces the risk of claims and downtime.
PEM.GB also features bifacial technology, which allows for the use of reflected light from the ground - a significant advantage on bright roofs, ground-mounted structures, or carports. For investors, the longer warranty period also plays a crucial role in the project's long-term profitability. This is a series for individuals and companies who want to combine durability, predictable yields, and modern technology without compromise.
Ranking
Signals from the data
Residential and commercial.
Roofs where every square metre has to count, tight roof space and weight-limited structures.
Bottom 9% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 7,401st in the whole database.
Bottom 10% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 7,411th in the whole database.
Bottom 14% of the TOPCon 450-500 W segment, against a median of 52.2.
Bruk-Bet manufactures its modules at a facility in Tarnów and has operated in the Polish market since 1984. This means warranty claims are handled without intermediary importers, resulting in shorter service response times and no foreign-exchange risk on warranty settlements — a significant advantage for installers and institutional investors.
N-type cells eliminate LID and significantly reduce LeTID compared to PERC technology, maintaining higher energy yield throughout the module's entire service life. The dual-glass construction further reduces the risk of microcracks, moisture ingress, and encapsulant yellowing — the primary causes of premature degradation.
Bifacial technology enables an additional 5–15% energy gain from albedo irradiance reflected off the mounting surface (typical bifacial gain for white gravel or light-colored concrete is 8–12%). Particularly cost-effective in ground-mounted systems, carports, and flat-roof installations with a high-reflectance surface.
The manufacturer guarantees ≥87.4% of nominal power output after 30 years — five years longer than the standard 25-year warranties offered by most competitors in this power class. The extended power warranty directly improves project financials, lowering LCOE and enhancing bankability for third-party financing.
Bruk-Bet is among a select group of manufacturers worldwide that conduct proprietary tests simulating 25 years of module operation under extreme conditions. This independent durability validation reduces risk for both the installer and the end investor compared to manufacturers relying solely on standard IEC certifications.
At the same nominal power of 470 Wp, the PEM.GB module achieves an efficiency of 21.71%, while direct peer comparables — the Recom Lynx and Sunlike Solar SKT470 — reach 23.52%. This 1.81 percentage-point gap translates to approximately 8.3% greater physical module area for the Bruk-Bet unit (~2.16 m² vs. ~2.00 m²), limiting total system power output on rooftops with constrained or irregular usable surface area.
- At 21.7% efficiency, this panel is 0.8pp below the TOPCon 450-500W median of 22.5%
- 217.1 W/m² power density is 8.1 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
- Temperature coefficient of -0.29%/°C matches the TOPCon 450-500W median
- At 26.0 kg (2.0 kg above TOPCon 450-500W median of 24.0 kg), requires checking roof load capacity
- #7411 for efficiency, #2165 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Bruk-Bet in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 470 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Alternatives
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