Middle of its segment, modest efficiency
The Bruk-Bet PEM.GB N-Type solar panel series utilizes advanced N-type monocrystalline cells, which almost completely eliminate the phenomenon of light-induced degradation. This innovative solution guarantees users stable energy production for decades, offering significantly higher efficiency compared to older technologies. A key differentiator of this line is the double glass (glass-glass) construction, which effectively replaces the traditional insulating backsheet. As a result, the panels exhibit extreme resistance to external factors such as moisture, ammonia, or mechanical loads, making them an ideal choice for agriculture and installations in harsh environmental conditions. The use of bifacial technology enables active energy harvesting from both sides of the cell by utilizing light reflected from the ground, which significantly increases the total energy yield. These modules solve the problem of performance drops at high temperatures thanks to an excellent temperature coefficient of power. Investors choosing this series gain maximum system longevity and the highest fire safety class, which places the Polish product above standard competition. This is an optimal solution for demanding prosumers and companies that focus on uncompromising quality and the certainty of long-term profits without the risk of component failure.
Ranking
Signals from the data
Residential, commercial and agrivoltaic.
Tight roof space.
Bottom 25% of the TOPCon 450-500 W segment, against a median of 22.52%.
N-type TOPCon cells eliminate light-induced degradation (LID/LeTID) — a known weakness of legacy PERC technology — resulting in more stable long-term energy yield over the full system lifetime. At 22.17% efficiency, this module ranks among the top performers in the 480 Wp segment, exceeding competitors such as the First Solar Series 6 Plus Bifacial (19%) by more than 3 percentage points.
The dual-glass design eliminates the conventional EVA backsheet in favor of a certified-resistant encapsulant stack, providing proven protection against moisture ingress, ammonia exposure, and salt mist — critical requirements for agrivoltaic and industrial installations. Independent NREL research (OSTI 1810721) confirms that glass-glass modules exhibit statistically lower long-term degradation rates compared to glass-backsheet counterparts.
The bifacial design harvests energy from reflected irradiance on the rear surface, delivering a real-world energy gain of 5–15% over monofacial modules at typical ground albedo values (light gravel, snow cover, white roofing membrane). At a nominal power of 480 Wp, this translates to an effective system output of up to 552 Wp under optimal conditions.
Bruk-Bet provides a 25-year product warranty and a 30-year linear power output warranty — terms that surpass the industry-standard 25-year power warranties offered by most competitors in this segment, including the Sunket SKT460~480M10-120D3. The extended warranty horizon directly reduces the LCOE calculated over a 25-year project cycle.
The Tarnów production facility has been operational since 2012 and is one of the few active PV module factories in Poland. This enables full warranty and after-sales support without reliance on an importer, eliminating logistics risk (tariffs, inventory availability) and significantly reducing service response times compared to Asian manufacturers.
Glass-glass 480 Wp modules weigh an estimated 28–33 kg — approximately 6–8 kg more than comparable glass-backsheet modules — which may exceed the allowable load of lightweight trapezoidal metal roofs or older flat-roof structures without a prior structural assessment. Installation requires an additional load-bearing evaluation and potentially reinforcement of the racking or roof substructure.
The Tarnów facility has an annual production capacity of approximately 25 MW — several orders of magnitude below Chinese manufacturers offering comparable technology (Sunket and Shinson operate at GW scale). For projects exceeding a few MW, this may result in delivery timeline constraints or limited product availability during peak installation season.
- At 22.2% efficiency, this panel is on par with typical TOPCon 450-500W modules
- 221.7 W/m² power density is 3.5 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
- At -0.29%/°C, hot weather performance is typical for TOPCon 450-500W panels
- At 26.0 kg (2.0 kg above TOPCon 450-500W median of 24.0 kg), requires checking roof load capacity
- In the top 43% for efficiency among all TOPCon 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 480 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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