--- title: "Bruk-Bet PEM.GB-480 N-Type 480W Solar Panel - Specs & Review | ComparePV" description: "Bruk-Bet PEM.GB-480 N-Type 480W solar panel. Specs: 22.17% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/bruk-bet-pem-gb-480-n-type" updated: 2026-09-11 --- # Bruk-Bet PEM.GB-480 N-Type Middle of its segment, modest efficiency 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Bruk-Bet - **Model:** PEM.GB-480 N-Type - **Series:** PEM.GB N-Type - **Rated power:** 480 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 480 W | 465 W | Typical | | | Module efficiency | 22.17% | 22.52% | Weak - bottom 25% | 5,963 | | Power density | 221.7 | 225.2 | Typical | 5,914 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 26.0 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.17% | 22.52% | Weak - bottom 25% | 5,963 | | Power density | 221.7 | 225.2 | Typical | 5,914 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 54.2 | 52.2 | Typical | 8,370 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **22.17% module efficiency** - Bottom 25% of the TOPCon 450-500 W segment, against a median of 22.52%. - **Best for:** Residential, commercial and agrivoltaic. - **Not ideal for:** Tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 480 W - **Efficiency:** 22.17 % - **Voltage at Pmax (Vmp):** 35.90 V - **Current at Pmax (Imp):** 13.37 A - **Open-circuit voltage (Voc):** 42.46 V - **Short-circuit current (Isc):** 14.00 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 ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 1909 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.0 kg - **Area:** 2.16 m2 - **Power density:** 221.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.5 % - **First-year degradation:** 12.50 % ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5963 of 14005 | | Power density | 5914 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 8370 of 14005 | | Warranty | 21 of 14005 | ## Pros - **TOPCon N-Type – Minimal LID Degradation** - 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. - **Glass-Glass Construction – Premium Durability Class** - 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. - **Bifacial Technology – 5–15% Additional Annual Energy Yield** - 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. - **30-Year Power Warranty** - 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. - **Polish Manufacturing – Local Service and Supply Chain** - 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. ## Cons - **Higher Weight – Constraint for Lightweight Roof Structures** - 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. - **Limited Production Capacity** - 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. ## About this series 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. ## Notable figures - 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 ## Questions ### What is TOPCon technology in the Bruk-Bet PEM.GB N-Type panels, and why is it superior to PERC? TOPCon (Tunnel Oxide Passivated Contact) is an advanced N-type cell technology in which a thin tunnel oxide layer suppresses electron recombination and raises module efficiency to as high as 22%. Compared to conventional PERC (P-type) cells, TOPCon virtually eliminates the LID (Light Induced Degradation) phenomenon — the power loss caused by initial light exposure. The practical result is that Bruk-Bet PEM.GB N-Type panels retain their rated output for a longer period and degrade less over their lifetime than older-generation technologies. ### What warranty coverage comes with the Bruk-Bet PEM.GB N-Type panels? The PEM.GB N-Type series is backed by a 25-year product warranty covering physical and material defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees a minimum energy yield in accordance with a defined degradation schedule for the full 30-year period. This is one of the longest warranty packages currently available on the market and reflects the Polish manufacturer's confidence in the long-term durability of these modules. ### Does the bifacial Bruk-Bet PEM.GB N-Type panel actually generate more energy than a monofacial module? Yes — provided the installation is configured correctly. A bifacial panel harvests irradiance from both the front and rear sides of the cell, utilizing light reflected from the ground surface (albedo effect). On white gravel or other high-albedo substrates, the bifacial gain can reach 10–20% relative to the rated 480 Wp. On a typical dark roof the gain is smaller but still measurable. The greatest benefits are achieved in ground-mounted systems with high-albedo ground cover or on rooftops fitted with light-colored membranes. ### Will the glass-glass construction of the PEM.GB N-Type panels hold up in harsh environments such as livestock farming facilities? Yes, and this is one of the primary reasons to select this series for agrivoltaic applications. The dual-glass structure replaces the conventional polymer backsheet, which is susceptible to microcracks and ammonia permeation from barns and slurry pits. Glass-glass modules are resistant to moisture ingress, ammonia exposure, and mechanical loads from snow and wind. They represent the optimal solution for farms, greenhouses, and installations in chemically aggressive environments. ### How do the Bruk-Bet PEM.GB N-Type panels perform at high temperatures during summer? N-type TOPCon cells have a more favorable power temperature coefficient than older P-type technologies. This means that when the module heats up to 70 °C, it loses proportionally less output than a comparable PERC panel under the same conditions. In practice, a PEM.GB N-Type installation in Poland will generate more energy on a hot summer day than an equivalent watt-peak figure from an older-generation module, which directly translates into a higher annual energy yield. ### Are the Bruk-Bet PEM.GB N-Type panels manufactured in Poland, and does that matter when making a purchase decision? Yes, Bruk-Bet modules are manufactured in Poland by a company with extensive experience in the construction industry. Domestic production means a shorter supply chain, easier access to warranty service, and no exposure to customs complications or import delays. For businesses and prosumers alike, having a manufacturer headquartered in Poland also simplifies the enforcement of the 25-year product warranty, since claims can be pursued directly without involving foreign subsidiaries or representatives. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Optimal-Edge-Glass-Glass-karta-produktowa-PEM-GB-480-6ea86d44b6e7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +30 W, cooler, +2.8 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.6 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +25 W, cooler, +2.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.3 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.3 pp | | [Bruk-Bet PEM.GB-470 N-Type](https://comparepv.com/panel/bruk-bet-pem-gb-470-n-type) | 470 W | -10 W, -0.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +80 W, cooler, +2.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +75 W, cooler, +2.4 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +70 W, lighter, +2.2 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +60 W, cooler, +2.2 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +60 W, cooler, +2.2 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +65 W, cooler, +2.1 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +65 W, cooler, +2.0 pp | --- Source: https://comparepv.com/panel/bruk-bet-pem-gb-480-n-type Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.