--- title: "Bauer Solar BS-445-108M10HBT-GG 445W Solar Panel - Specs & Review | ComparePV" description: "Bauer Solar BS-445-108M10HBT-GG 445W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/bauer-solar-bs-445-108m10hbt-gg" updated: 2026-09-11 --- # Bauer Solar BS-445-108M10HBT-GG Efficiency leader, no clear weak spot 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Bauer Solar - **Model:** BS-445-108M10HBT-GG - **Series:** Glass-Glass Pure BS-108M10HBT-GG - **Rated power:** 445 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 435 W | Strong - top 8% | | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 24.5 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 55.1 | 51.4 | Typical | 9,435 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **22.30% module efficiency** - Top 17% of the TOPCon 400-450 W segment, against a median of 22.00%. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 33.04 V - **Current at Pmax (Imp):** 13.47 A - **Open-circuit voltage (Voc):** 39.60 V - **Short-circuit current (Isc):** 13.97 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:** 0.048 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.5 kg - **Area:** 2.00 m2 - **Power density:** 222.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 389 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5302 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 9435 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-Type TOPCon half-cut cells** - N-Type TOPCon half-cut cells reduce resistive and LID losses, and a -0.29%/°C temperature coefficient delivers better high-temperature performance than legacy PERC technology. - **30-year warranty at 87.4% power** - The manufacturer guarantees a linear minimum of 87.4% of nominal power after 30 years, clearly outperforming standard 25-year industry warranties that typically end around 84.8% power retention. - **Glass-glass construction with Fire Class A** - The dual tempered glass (2x2 mm) eliminates the delamination risk typical of backsheet modules, and the panel holds a Fire Class A certification plus HW3 hail resistance confirmed by SUPSI PVLab testing. - **Bifacial energy generation** - 80% ±5% bifaciality enables additional energy yield from ground-reflected radiation, particularly beneficial for installations over high-albedo surfaces or light-colored roofing. - **Long-standing, financially stable manufacturer** - Bauer Solar has operated since 2003 and holds the German CrefoZert certification for excellent creditworthiness, awarded to only about 2% of German companies - supporting confidence in its 30-year warranty. ## Cons - **No BNEF Tier-1 status** - The manufacturer is not listed as BNEF Tier-1 (bankable=false), which may complicate financing for commercial projects requiring this classification, despite the company's solid market track record. - **Efficiency below top-tier peers** - The 22-22.5% efficiency is lower than comparable modules like SunKean/Sunket SKT430-450M10-108D5 (23.04% at the same 450 Wp max power), meaning a slightly larger installation area is needed for equivalent power output. - **Manufacturing outside Germany** - Despite the German brand and warranty, the modules are manufactured in Asia - Bauer Solar acts as quality guarantor and reinsurer rather than direct cell manufacturer, which is worth verifying in the supply chain assessment. ## About this series The Glass-Glass Pure BS-108M10HBT-GG is a bifacial photovoltaic module built for investors who expect maximum durability and predictable energy yield over decades. At its core are **N-Type TOPCon half-cut cells**, which reduce resistive losses and improve performance under high temperatures and partial shading. The **glass-glass construction** with a transparent rear laminate eliminates the delamination and microcrack risks typical of glass-foil modules, while enabling **bifacial energy generation** - the module captures light reflected off the ground surface, boosting system output without increasing its footprint. Thanks to double tempered glass, the panel meets the highest fire protection class and retains resistance to hail, salt mist, and ammonia, making it a solid choice for agricultural, industrial, and coastal installations. The manufacturer backs the series with a **30-year linear performance warranty**, significantly exceeding industry standards for glass-foil modules. This is a solution for anyone treating a solar investment as a long-term asset, where low degradation and structural reliability translate into real savings on LCOE. ## Notable figures - Efficiency of 22.3% matches the \*\*TOPCon 400-450W\*\* median - At 222.7 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - At 24.5 kg (2.5 kg above \*\*TOPCon 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### How does the Glass-Glass Pure BS-108M10HBT-GG module differ from standard backsheet panels? The key difference is the glass-glass construction instead of a glass-and-backsheet design. Two tempered glass layers protect the TOPCon cells from moisture, microcracks, and delamination, extending the panel's service life. The transparent rear layer also enables bifacial energy generation, which standard backsheet panels cannot offer. The result is higher durability and a genuinely longer operational lifespan. ### How much extra yield does the bifacial design of the BS-108M10HBT-GG actually deliver? The rear-side energy gain depends on the ground albedo and mounting height, but in typical installations over light gravel or white roofing it usually adds 5 to 15 percent more annual energy compared to a monofacial module of the same power rating. Best results are achieved with ground-mount or carport structures, where reflected light can freely reach the back of the panel. ### What warranty comes with the Glass-Glass Pure BS-108M10HBT-GG panels? Bauer Solar covers this series with a 30-year product warranty and a 30-year linear power warranty. This significantly exceeds the market standard for backsheet modules, which typically offer 10-12 years on the product and 25 years on power output. This extended coverage reflects the higher long-term durability of the glass-glass construction. ### Are the BS-108M10HBT-GG panels suitable for coastal or agricultural installations? Yes, this is one of the series' main applications. The dual tempered glass and robust glass-glass construction provide resistance to salt mist, ammonia, and hail, making the panel a solid choice for livestock farms and coastal installations where standard backsheet modules tend to degrade faster. ### What is N-Type TOPCon technology and how does it differ from PERC? TOPCon (Tunnel Oxide Passivated Contact) is an N-Type cell technology that reduces carrier recombination through a thin oxide layer on the cell contacts. In practice this means higher efficiency, lower first-year degradation, and better power retention at high temperatures compared to older P-Type PERC cells. The half-cut cell design further reduces resistive losses and improves performance under partial shading. ### Does the BS-108M10HBT-GG module perform well in high summer temperatures? Yes, TOPCon cells have a lower power temperature coefficient than PERC cells, meaning less output loss on hot days. This is a real advantage for rooftop installations with limited ventilation and for high-irradiance regions, where the panel surface temperature can significantly exceed ambient temperature. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Bauer-BS440-450108M10HBT-GG-Datasheet-f1fa2faf3e05.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, lighter, +2.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +45 W, lighter, +2.2 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +45 W, lighter, +2.2 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +40 W, lighter, +2.0 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +40 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +40 W, lighter, +2.0 pp | | [Bauer Solar BS-440-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-440-108m10hbt-gg) | 440 W | -0.3 pp | | [Bauer Solar BS-450-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-450-108m10hbt-gg) | 450 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +60 W, cooler, +2.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +55 W, cooler, +2.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/bauer-solar-bs-445-108m10hbt-gg Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.