--- title: "JA Solar JAM54D41-455/LB vs Trina Solar TSM-NEG9RC.27-450 - Solar Panel Comparison | ComparePV" description: "Compare JA Solar JAM54D41-455/LB vs Trina Solar TSM-NEG9RC.27-450 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/trina-solar-co-ltd-tsm-neg9rc-27-450" image: "https://comparepv.com/og/compare/panels/ja-solar-jam54d41-455-lb-1/trina-solar-co-ltd-tsm-neg9rc-27-450.png" updated: 2026-09-11 --- # JA Solar JAM54D41-455/LB vs Trina Solar TSM-NEG9RC.27-450 JAM54D41-455/LB leads on the differences that matter The largest is open-circuit voltage: 13.40 V apart. 12 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [JA Solar JAM54D41-455/LB](https://comparepv.com/panel/ja-solar-jam54d41-455-lb-1) | [Trina Solar TSM-NEG9RC.27-450](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg9rc-27-450) | | Manufacturer | JA Solar | Trina Solar | | Power | 455 Wp | 450 Wp | | Efficiency | 22.80 % | 22.50 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | JAM54D41-455/LB | TSM-NEG9RC.27-450 | Difference | | --- | --- | --- | --- | | Open-circuit voltage | 39.50 V | 52.90 V | 13.40 V apart | | Short-circuit current | 14.95 A | 10.74 A | 4.21 A apart | | Module efficiency | 22.80 % | 22.50 % | +0.30 pp for JAM54D41-455/LB | | Voltage at max power | 32.83 V | 44.60 V | 11.77 V apart | | Current at max power | 13.99 A | 10.09 A | 3.90 A apart | | Cell count | 108 | 144 | 36 cells apart | | Weight | 22.0 kg | 21.0 kg | -1.0 kg for TSM-NEG9RC.27-450 | ## Every compared parameter | Parameter | JAM54D41-455/LB | TSM-NEG9RC.27-450 | | --- | --- | --- | | Rated power | 455 Wp | 450 Wp | | Module efficiency | 22.80 % | 22.50 % | | Power density | 227.7 Wp/m² | 225.2 Wp/m² | | Open-circuit voltage | 39.50 V | 52.90 V | | Voltage at max power | 32.83 V | 44.60 V | | Short-circuit current | 14.95 A | 10.74 A | | Current at max power | 13.99 A | 10.09 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 22.0 kg | 21.0 kg | | Weight per kWp | 48.4 kg/kWp | 46.7 kg/kWp | | Product warranty | 15 yrs | 15 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 | 144 | | 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 (-0.290 %/°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, JAM54D41-455/LB:** 15,266 kWh - **Cumulative output, TSM-NEG9RC.27-450:** 15,098 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | JAM54D41-455/LB | TSM-NEG9RC.27-450 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 455 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 435 W | 430 W | 95.7% of rated power | | Typical summer roof | 55 °C | 415 W | 411 W | 91.3% of rated power | | Hot roof | 70 °C | 396 W | 391 W | 87.0% of rated power | ## Against the whole database | Measure | JAM54D41-455/LB | TSM-NEG9RC.27-450 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,769 | #4,281 | 14,129 | JAM54D41-455/LB leads by 1,512 places | | Power density | #2,943 | #4,284 | 14,129 | JAM54D41-455/LB leads by 1,341 places | | Heat behaviour | #2,220 | #2,220 | 14,129 | Tied - the same position in the database | | Weight | #2,224 | #1,258 | 14,129 | TSM-NEG9RC.27-450 leads by 966 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #7,876 | #8,400 | 14,129 | JAM54D41-455/LB leads by 524 places | ## Questions ### Which panel is better: JA Solar JAM54D41-455/LB or Trina Solar TSM-NEG9RC.27-450? According to our database: **JA Solar JAM54D41-455/LB** has higher module efficiency (**22.80%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450? **JA Solar JAM54D41-455/LB** has a module efficiency of **22.80%**, while **Trina Solar TSM-NEG9RC.27-450** is **22.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does JA Solar JAM54D41-455/LB use vs Trina Solar TSM-NEG9RC.27-450? **JA Solar JAM54D41-455/LB** uses **TOPCon** cells; **Trina Solar TSM-NEG9RC.27-450** 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 JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450? **JA Solar JAM54D41-455/LB** has a **30 years** power warranty; **Trina Solar TSM-NEG9RC.27-450** 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 JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450 bifacial panels? Both **JA Solar JAM54D41-455/LB** and **Trina Solar TSM-NEG9RC.27-450** 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 - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D40-475/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d40-475-lb) - 6 differences, the largest is module efficiency - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D40-470/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d40-470-lb) - 3 differences, the largest is module efficiency - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D40-465/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d40-465-lb) - 3 differences, the largest is module efficiency - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D40-460/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d40-460-lb-1) - 2 differences, the largest is product warranty - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D40-455/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d40-455-lb-1) - One difference: product warranty - [JA Solar JAM54D41-455/LB vs JA Solar JAM54D41 455/LB](https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/ja-solar-jam54d41-455-lb) - 2 differences, the largest is product warranty --- Source: https://comparepv.com/compare/ja-solar-jam54d41-455-lb-1/trina-solar-co-ltd-tsm-neg9rc-27-450 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.