--- title: "Axitec AC-445TGB/108WB vs Axitec AC-455TGB/108WB - Solar Panel Comparison | ComparePV" description: "Compare Axitec AC-445TGB/108WB vs Axitec AC-455TGB/108WB side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-455tgb-108wb" image: "https://comparepv.com/og/compare/panels/axitec-ac-445tgb-108wb/axitec-ac-455tgb-108wb.png" updated: 2026-09-11 --- # Axitec AC-445TGB/108WB vs Axitec AC-455TGB/108WB 455TGB/108WB leads on the differences that matter The largest is module efficiency: 0.49 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Axitec AC-445TGB/108WB](https://comparepv.com/panel/axitec-ac-445tgb-108wb) | [Axitec AC-455TGB/108WB](https://comparepv.com/panel/axitec-ac-455tgb-108wb) | | Manufacturer | Axitec | Axitec | | Power | 445 Wp | 455 Wp | | Efficiency | 21.80 % | 22.29 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 445TGB/108WB | 455TGB/108WB | Difference | | --- | --- | --- | --- | | Module efficiency | 21.80 % | 22.29 % | +0.49 pp for 455TGB/108WB | | Power density | 218.0 Wp/m² | 222.9 Wp/m² | +4.9 Wp/m² for 455TGB/108WB | | Rated power | 445 Wp | 455 Wp | +10 W for 455TGB/108WB | ## Every compared parameter | Parameter | 445TGB/108WB | 455TGB/108WB | | --- | --- | --- | | Rated power | 445 Wp | 455 Wp | | Module efficiency | 21.80 % | 22.29 % | | Power density | 218.0 Wp/m² | 222.9 Wp/m² | | Open-circuit voltage | 39.12 V | 39.68 V | | Voltage at max power | 32.49 V | 32.98 V | | Short-circuit current | 14.40 A | 14.51 A | | Current at max power | 13.70 A | 13.80 A | | Temperature coefficient | -0.310 %/°C | -0.310 %/°C | | Dimensions | 1800x1134x30 mm | 1800x1134x30 mm | | Module area | 2.041 m² | 2.041 m² | | Weight | 25.3 kg | 25.3 kg | | Weight per kWp | 56.9 kg/kWp | 55.6 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 | 108 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.310 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, 445TGB/108WB:** 14,931 kWh - **Cumulative output, 455TGB/108WB:** 15,266 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | 445TGB/108WB | 455TGB/108WB | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 445 W | 455 W | 100.0% of rated power | | Cool, bright day | 40 °C | 424 W | 434 W | 95.3% of rated power | | Typical summer roof | 55 °C | 404 W | 413 W | 90.7% of rated power | | Hot roof | 70 °C | 383 W | 392 W | 86.0% of rated power | ## Against the whole database | Measure | 445TGB/108WB | 455TGB/108WB | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,085 | #5,439 | 14,129 | 455TGB/108WB leads by 1,646 places | | Power density | #7,070 | #5,162 | 14,129 | 455TGB/108WB leads by 1,908 places | | Heat behaviour | #8,069 | #8,069 | 14,129 | Tied - the same position in the database | | Weight | #10,989 | #10,071 | 14,129 | 455TGB/108WB leads by 918 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #6,260 | #5,309 | 14,129 | 455TGB/108WB leads by 951 places | ## Questions ### Which panel is better: Axitec AC-445TGB/108WB or Axitec AC-455TGB/108WB? According to our database: **Axitec AC-455TGB/108WB** has higher module efficiency (**22.29%** vs **21.80%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Axitec AC-445TGB/108WB and Axitec AC-455TGB/108WB? **Axitec AC-445TGB/108WB** has a module efficiency of **21.80%**, while **Axitec AC-455TGB/108WB** is **22.29%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Axitec AC-445TGB/108WB use vs Axitec AC-455TGB/108WB? **Axitec AC-445TGB/108WB** uses **TOPCon** cells; **Axitec AC-455TGB/108WB** 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 Axitec AC-445TGB/108WB and Axitec AC-455TGB/108WB? **Axitec AC-445TGB/108WB** has a **30 years** power warranty; **Axitec AC-455TGB/108WB** 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 Axitec AC-445TGB/108WB and Axitec AC-455TGB/108WB bifacial panels? Both **Axitec AC-445TGB/108WB** and **Axitec AC-455TGB/108WB** 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 - [Axitec AC-445TGB/108WB vs Axitec AC-460TGB/108WB](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-460tgb-108wb) - 3 differences, the largest is module efficiency - [Axitec AC-445TGB/108WB vs Axitec AC-450TGB/108WB](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-450tgb-108wb) - One difference: module efficiency - [Axitec AC-445TGB/108WB vs Axitec AC-710TGB/132TS](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-710tgb-132ts) - 12 differences, the largest is module efficiency - [Axitec AC-445TGB/108WB vs Axitec AC-705TGB/132TS](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-705tgb-132ts) - 12 differences, the largest is module efficiency - [Axitec AC-445TGB/108WB vs Axitec AC-700TGB/132TS](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-700tgb-132ts) - 12 differences, the largest is module efficiency - [Axitec AC-445TGB/108WB vs Axitec AC-695TGB/132TS](https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-695tgb-132ts) - 12 differences, the largest is rated power --- Source: https://comparepv.com/compare/axitec-ac-445tgb-108wb/axitec-ac-455tgb-108wb 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.