--- title: "Sharp NB-JD570 vs Sharp NB-JD580 - Solar Panel Comparison | ComparePV" description: "Compare Sharp NB-JD570 vs Sharp NB-JD580 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/sharp-nb-jd570/sharp-nb-jd580" updated: 2026-09-11 --- # Sharp NB-JD570 vs Sharp NB-JD580 JD580 leads on the differences that matter The largest is product warranty: 10 yrs longer. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Sharp NB-JD570](https://comparepv.com/panel/sharp-nb-jd570) | [Sharp NB-JD580](https://comparepv.com/panel/sharp-nb-jd580) | | Manufacturer | Sharp | Sharp | | Power | 570 Wp | 580 Wp | | Efficiency | 22.07 % | 22.45 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | JD570 | JD580 | Difference | | --- | --- | --- | --- | | Product warranty | 15 yrs | 25 yrs | +10 yrs for JD580 | | Module efficiency | 22.07 % | 22.45 % | +0.38 pp for JD580 | | Power density | 220.7 Wp/m² | 224.5 Wp/m² | +3.9 Wp/m² for JD580 | | Rated power | 570 Wp | 580 Wp | +10 W for JD580 | ## Every compared parameter | Parameter | JD570 | JD580 | | --- | --- | --- | | Rated power | 570 Wp | 580 Wp | | Module efficiency | 22.07 % | 22.45 % | | Power density | 220.7 Wp/m² | 224.5 Wp/m² | | Open-circuit voltage | 52.13 V | 52.55 V | | Voltage at max power | 42.80 V | 43.19 V | | Short-circuit current | 13.91 A | 14.03 A | | Current at max power | 13.32 A | 13.43 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2278x1134x30 mm | 2278x1134x30 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 32.5 kg | 32.5 kg | | Weight per kWp | 57.0 kg/kWp | 56.0 kg/kWp | | Product warranty | 15 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | Yes | Yes | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.300 %/°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, JD570:** 19,125 kWh - **Cumulative output, JD580:** 19,460 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | JD570 | JD580 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 570 W | 580 W | 100.0% of rated power | | Cool, bright day | 40 °C | 544 W | 554 W | 95.5% of rated power | | Typical summer roof | 55 °C | 519 W | 528 W | 91.0% of rated power | | Hot roof | 70 °C | 493 W | 502 W | 86.5% of rated power | ## Against the whole database | Measure | JD570 | JD580 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #6,136 | #4,620 | 14,005 | JD580 leads by 1,516 places | | Power density | #6,058 | #4,547 | 14,005 | JD580 leads by 1,511 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #11,009 | #10,343 | 14,005 | JD580 leads by 666 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,743 | #2,056 | 14,005 | JD580 leads by 2,687 places | ## Questions ### Which panel is better: Sharp NB-JD570 or Sharp NB-JD580? According to our database: **Sharp NB-JD580** has higher module efficiency (**22.45%** vs **22.07%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Sharp NB-JD570 and Sharp NB-JD580? **Sharp NB-JD570** has a module efficiency of **22.07%**, while **Sharp NB-JD580** is **22.45%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Sharp NB-JD570 use vs Sharp NB-JD580? **Sharp NB-JD570** uses **TOPCon** cells; **Sharp NB-JD580** 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 Sharp NB-JD570 and Sharp NB-JD580? **Sharp NB-JD570** has a **30 years** power warranty; **Sharp NB-JD580** 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 Sharp NB-JD570 and Sharp NB-JD580 bifacial panels? Both **Sharp NB-JD570** and **Sharp NB-JD580** 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 - [Sharp NB-JD570 vs Sharp NB-JD575](https://comparepv.com/compare/sharp-nb-jd570/sharp-nb-jd575) - One difference: product warranty - [Sharp NB-JD570 vs Sharp GSD8K66H-740WT](https://comparepv.com/compare/sharp-nb-jd570/sharp-gsd8k66h-740wt) - 14 differences, the largest is module efficiency - [Sharp NB-JD570 vs Sharp GSD8K66H-735WT](https://comparepv.com/compare/sharp-nb-jd570/sharp-gsd8k66h-735wt) - 13 differences, the largest is module efficiency - [Sharp NB-JD570 vs Sharp GSD8K66H-730WT](https://comparepv.com/compare/sharp-nb-jd570/sharp-gsd8k66h-730wt) - 13 differences, the largest is module efficiency - [Sharp NB-JD570 vs Sharp GSD8K66H-725WT](https://comparepv.com/compare/sharp-nb-jd570/sharp-gsd8k66h-725wt) - 14 differences, the largest is module efficiency - [Sharp NB-JD570 vs Sharp GSD8K66H-720WT](https://comparepv.com/compare/sharp-nb-jd570/sharp-gsd8k66h-720wt) - 14 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/sharp-nb-jd570/sharp-nb-jd580 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.