--- title: "Bauer Solar BS-450-108M10HBT-GG vs Bauer Solar BS-475-120M10NHBB-GG - Solar Panel Comparison | ComparePV" description: "Compare Bauer Solar BS-450-108M10HBT-GG vs Bauer Solar BS-475-120M10NHBB-GG side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/bauer-solar-bs-450-108m10hbt-gg/bauer-solar-bs-475-120m10nhbb-gg" updated: 2026-09-11 --- # Bauer Solar BS-450-108M10HBT-GG vs Bauer Solar BS-475-120M10NHBB-GG 450-108M10HBT-GG leads on the differences that matter The largest is module efficiency: 0.55 pp more efficient. 9 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Bauer Solar BS-450-108M10HBT-GG](https://comparepv.com/panel/bauer-solar-bs-450-108m10hbt-gg) | [Bauer Solar BS-475-120M10NHBB-GG](https://comparepv.com/panel/bauer-solar-bs-475-120m10nhbb-gg) | | Manufacturer | Bauer Solar | Bauer Solar | | Power | 450 Wp | 475 Wp | | Efficiency | 22.50 % | 21.95 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 450-108M10HBT-GG | 475-120M10NHBB-GG | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 21.95 % | +0.55 pp for 450-108M10HBT-GG | | Rated power | 450 Wp | 475 Wp | +25 W for 475-120M10NHBB-GG | | Module area | 1.998 m² | 2.164 m² | 0.166 m² apart | | Power density | 225.2 Wp/m² | 219.5 Wp/m² | +5.7 Wp/m² for 450-108M10HBT-GG | | Weight | 24.5 kg | 26.7 kg | -2.2 kg for 450-108M10HBT-GG | | Open-circuit voltage | 39.80 V | 42.53 V | 2.73 V apart | | Temperature coefficient | -0.290 %/°C | -0.300 %/°C | +0.010 %/°C for 450-108M10HBT-GG | | Cell count | 108 | 120 | 12 cells apart | | Dimensions | 1762x1134x30 mm | 1908x1134x30 mm | 1762x1134x30 mm vs 1908x1134x30 mm | | Voltage at max power | 33.24 V | 35.23 V | 1.99 V apart | ## Every compared parameter | Parameter | 450-108M10HBT-GG | 475-120M10NHBB-GG | | --- | --- | --- | | Rated power | 450 Wp | 475 Wp | | Module efficiency | 22.50 % | 21.95 % | | Power density | 225.2 Wp/m² | 219.5 Wp/m² | | Open-circuit voltage | 39.80 V | 42.53 V | | Voltage at max power | 33.24 V | 35.23 V | | Short-circuit current | 14.04 A | 14.23 A | | Current at max power | 13.54 A | 13.49 A | | Temperature coefficient | -0.290 %/°C | -0.300 %/°C | | Dimensions | 1762x1134x30 mm | 1908x1134x30 mm | | Module area | 1.998 m² | 2.164 m² | | Weight | 24.5 kg | 26.7 kg | | Weight per kWp | 54.4 kg/kWp | 56.2 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 120 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, 450-108M10HBT-GG:** 15,098 kWh - **Cumulative output, 475-120M10NHBB-GG:** 15,937 kWh - **Gap:** 839 kWh ## Output when hot | Condition | Cell temperature | 450-108M10HBT-GG | 475-120M10NHBB-GG | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 475 W | 100.0% of rated power | | Cool, bright day | 40 °C | 430 W | 454 W | 95.5% of rated power | | Typical summer roof | 55 °C | 411 W | 432 W | 91.0% of rated power | | Hot roof | 70 °C | 391 W | 411 W | 86.5% of rated power | ## Against the whole database | Measure | 450-108M10HBT-GG | 475-120M10NHBB-GG | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #6,745 | 14,005 | 450-108M10HBT-GG leads by 2,523 places | | Power density | #4,225 | #6,702 | 14,005 | 450-108M10HBT-GG leads by 2,477 places | | Heat behaviour | #2,165 | #6,093 | 14,005 | 450-108M10HBT-GG leads by 3,928 places | | Weight | #8,755 | #10,496 | 14,005 | 450-108M10HBT-GG leads by 1,741 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,189 | #5,017 | 14,005 | 475-120M10NHBB-GG leads by 172 places | ## Questions ### Which panel is better: Bauer Solar BS-450-108M10HBT-GG or Bauer Solar BS-475-120M10NHBB-GG? According to our database: **Bauer Solar BS-450-108M10HBT-GG** has higher module efficiency (**22.50%** vs **21.95%**); **Bauer Solar BS-450-108M10HBT-GG** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.300%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Bauer Solar BS-450-108M10HBT-GG and Bauer Solar BS-475-120M10NHBB-GG? **Bauer Solar BS-450-108M10HBT-GG** has a module efficiency of **22.50%**, while **Bauer Solar BS-475-120M10NHBB-GG** is **21.95%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Bauer Solar BS-450-108M10HBT-GG use vs Bauer Solar BS-475-120M10NHBB-GG? **Bauer Solar BS-450-108M10HBT-GG** uses **TOPCon** cells; **Bauer Solar BS-475-120M10NHBB-GG** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Bauer Solar BS-450-108M10HBT-GG and Bauer Solar BS-475-120M10NHBB-GG? **Bauer Solar BS-450-108M10HBT-GG** has a **30 years** power warranty; **Bauer Solar BS-475-120M10NHBB-GG** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Bauer Solar BS-450-108M10HBT-GG and Bauer Solar BS-475-120M10NHBB-GG bifacial panels? Both **Bauer Solar BS-450-108M10HBT-GG** and **Bauer Solar BS-475-120M10NHBB-GG** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Bauer Solar BS-450-108M10HBT-GG vs Bauer Solar BS-445-108M10HBT-GG](https://comparepv.com/compare/bauer-solar-bs-450-108m10hbt-gg/bauer-solar-bs-445-108m10hbt-gg) - One difference: module efficiency - [Bauer Solar BS-450-108M10HBT-GG vs Bauer Solar BS-440-108M10HBT-GG](https://comparepv.com/compare/bauer-solar-bs-450-108m10hbt-gg/bauer-solar-bs-440-108m10hbt-gg) - 3 differences, the largest is module efficiency - [Bauer Solar BS-475-120M10NHBB-GG vs Bauer Solar BS-470-120M10NHBB-GG](https://comparepv.com/compare/bauer-solar-bs-475-120m10nhbb-gg/bauer-solar-bs-470-120m10nhbb-gg) - One difference: module efficiency - [Bauer Solar BS-475-120M10NHBB-GG vs Bauer Solar BS-465-120M10NHBB-GG](https://comparepv.com/compare/bauer-solar-bs-475-120m10nhbb-gg/bauer-solar-bs-465-120m10nhbb-gg) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/bauer-solar-bs-450-108m10hbt-gg/bauer-solar-bs-475-120m10nhbb-gg Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.