--- title: "JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-530/LR - Solar Panel Comparison | ComparePV" description: "Compare JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-530/LR 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-jat60s40-540-lr/ja-solar-jat60s41-530-lr" updated: 2026-09-11 --- # JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-530/LR JAT60S40-540/LR leads on the differences that matter The largest is module efficiency: 0.50 pp more efficient. 15 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | [JA Solar JAT60S41-530/LR](https://comparepv.com/panel/ja-solar-jat60s41-530-lr) | | Manufacturer | JA Solar | JA Solar | | Power | 540 Wp | 530 Wp | | Efficiency | 24.40 % | 23.90 % | | Technology | N-type | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | JAT60S40-540/LR | JAT60S41-530/LR | Difference | | --- | --- | --- | --- | | Module efficiency | 24.40 % | 23.90 % | +0.50 pp for JAT60S40-540/LR | | Product warranty | 15 yrs | 25 yrs | +10 yrs for JAT60S41-530/LR | | Power density | 243.8 Wp/m² | 239.3 Wp/m² | +4.5 Wp/m² for JAT60S40-540/LR | | Rated power | 540 Wp | 530 Wp | +10 W for JAT60S40-540/LR | ## Every compared parameter | Parameter | JAT60S40-540/LR | JAT60S41-530/LR | | --- | --- | --- | | Rated power | 540 Wp | 530 Wp | | Module efficiency | 24.40 % | 23.90 % | | Power density | 243.8 Wp/m² | 239.3 Wp/m² | | Open-circuit voltage | 45.78 V | 45.66 V | | Voltage at max power | 39.11 V | 38.89 V | | Short-circuit current | 15.02 A | 14.90 A | | Current at max power | 13.81 A | 13.63 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 1953x1134x30 mm | 1953x1134x30 mm | | Module area | 2.215 m² | 2.215 m² | | Weight | 23.5 kg | 23.5 kg | | Weight per kWp | 43.5 kg/kWp | 44.3 kg/kWp | | Product warranty | 15 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | 0.35 %/yr | | Cell technology | N-type | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 120 | 120 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.260 %/°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, JAT60S40-540/LR:** 18,259 kWh - **Cumulative output, JAT60S41-530/LR:** 17,921 kWh - **Gap:** 338 kWh ## Output when hot | Condition | Cell temperature | JAT60S40-540/LR | JAT60S41-530/LR | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 530 W | 100.0% of rated power | | Cool, bright day | 40 °C | 519 W | 509 W | 96.1% of rated power | | Typical summer roof | 55 °C | 498 W | 489 W | 92.2% of rated power | | Hot roof | 70 °C | 477 W | 468 W | 88.3% of rated power | ## Against the whole database | Measure | JAT60S40-540/LR | JAT60S41-530/LR | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #99 | #351 | 14,005 | JAT60S40-540/LR leads by 252 places | | Power density | #127 | #351 | 14,005 | JAT60S40-540/LR leads by 224 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #306 | #433 | 14,005 | JAT60S40-540/LR leads by 127 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,868 | #1,960 | 14,005 | JAT60S41-530/LR leads by 908 places | ## Questions ### Which panel is better: JA Solar JAT60S40-540/LR or JA Solar JAT60S41-530/LR? According to our database: **JA Solar JAT60S40-540/LR** has higher module efficiency (**24.40%** vs **23.90%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of JA Solar JAT60S40-540/LR and JA Solar JAT60S41-530/LR? **JA Solar JAT60S40-540/LR** has a module efficiency of **24.40%**, while **JA Solar JAT60S41-530/LR** is **23.90%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does JA Solar JAT60S40-540/LR use vs JA Solar JAT60S41-530/LR? **JA Solar JAT60S40-540/LR** uses **N-type** cells; **JA Solar JAT60S41-530/LR** uses **N-type**. 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 JAT60S40-540/LR and JA Solar JAT60S41-530/LR? **JA Solar JAT60S40-540/LR** has a **30 years** power warranty; **JA Solar JAT60S41-530/LR** 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. ## Related comparisons - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-535/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s40-535-lr) - One difference: module efficiency - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-530/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s40-530-lr) - 3 differences, the largest is module efficiency - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-525/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s41-525-lr) - 4 differences, the largest is module efficiency - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-525/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s40-525-lr) - 3 differences, the largest is module efficiency - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-520/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s41-520-lr) - 4 differences, the largest is module efficiency - [JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-520/LR](https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s40-520-lr) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ja-solar-jat60s40-540-lr/ja-solar-jat60s41-530-lr 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.