--- title: "Sharp NB-JD580 580W Solar Panel - Specs & Review | ComparePV" description: "Sharp NB-JD580 580W solar panel. Specs: 22.45% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sharp-nb-jd580" updated: 2026-09-11 --- # Sharp NB-JD580 Middle of its segment, heavy for its output 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Sharp - **Model:** NB-JD580 - **Series:** NB-JD Series - **Rated power:** 580 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 580 W | 580 W | Typical | | | Module efficiency | 22.45% | 22.44% | Typical | 4,620 | | Power density | 224.5 | 224.4 | Typical | 4,547 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 32.5 kg | 31.2 kg | Weak - bottom 20% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.45% | 22.44% | Typical | 4,620 | | Power density | 224.5 | 224.4 | Typical | 4,547 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 56.0 | 53.8 | Weak - bottom 20% | 10,343 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **56.0 kg per kWp** - Bottom 20% of the TOPCon 550-600 W segment, against a median of 53.8. - **Best for:** Commercial, utility-scale, shaded-installations and cold-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 580 W - **Efficiency:** 22.45 % - **Voltage at Pmax (Vmp):** 43.19 V - **Current at Pmax (Imp):** 13.43 A - **Open-circuit voltage (Voc):** 52.55 V - **Short-circuit current (Isc):** 14.03 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.248 %/degC - **Temperature coefficient of Isc:** 0.047 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.5 kg - **Area:** 2.58 m2 - **Power density:** 224.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4620 of 14005 | | Power density | 4547 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 10343 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sharp NB-JD series comprises modules designed for installations where stable output and resistance to real-world conditions are crucial - from solar farms to large commercial rooftops. The key advantage is the **glass-to-glass bifacial construction**, which can also utilize reflected light from the ground, making it easier to increase energy production without adding more panels. The use of **half-cut cells** minimizes losses and helps maintain performance even when part of the module is temporarily shaded. Furthermore, **PERC technology** supports better performance under lower sunlight conditions, which is important in Poland's variable climate. Another distinguishing feature is the **multi-busbar architecture**, which improves current flow and reduces sensitivity to microcracks. The NB-JD series is a good choice for investors who expect **higher reliability and lower risk of output reduction** over the long term, particularly in C&I and ground-mounted projects. ## Notable figures - Efficiency of 22.4% matches the \*\*TOPCon 550-600W\*\* median - At 224.5 W/m² power density, roof space requirements are typical for \*\*TOPCon 550-600W\*\* panels - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 550-600W\*\* median - At 32.5 kg, this panel is 1.3 kg heavier than the \*\*TOPCon 550-600W\*\* median (31.2 kg) - more demanding for installation crews - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### Has the Sharp NB-JD Series been discontinued? The Sharp NB-JD Series has been discontinued and is no longer part of Sharp's active product lineup. Limited inventory may still be available through select distributors, but planning new large-scale projects around ongoing supply availability is risky. For servicing or expanding an existing NB-JD installation, contact authorized Sharp partners or consider a current-generation equivalent from the manufacturer's portfolio. ### What cell technology does the Sharp NB-JD use and what does it mean in practice? The NB-JD Series uses N-type TOPCon (Tunnel Oxide Passivated Contact) cells, which minimize carrier recombination at electrical contacts. In practice, this delivers module efficiency exceeding 22% and better low-light performance compared to standard PERC. N-type cells also exhibit lower light-induced degradation (LID), preserving higher energy yield across the full system lifetime. ### How much additional energy can the bifacial Sharp NB-JD panels generate? The NB-JD's glass-glass bifacial structure allows the rear side to capture light reflected from the ground surface. Real-world bifacial gain depends on ground albedo and mounting height — on light gravel or white membranes it can add 5–15% annual yield. Ground-mount arrays and large flat commercial rooftops with properly configured tilt angles benefit most from the bifacial design. ### What warranty does the Sharp NB-JD Series carry? The Sharp NB-JD Series includes a 25-year product warranty covering material and manufacturing defects, plus a 30-year linear power output warranty guaranteeing at least 87.5% of rated power after 30 years. This is one of the longest power warranties available in the module market, making it particularly valuable for C&I and utility-scale projects with long-term financing structures. ### Do Sharp NB-JD panels perform well under variable, low-irradiance conditions? Yes, the NB-JD Series is well-suited for variable European climates with frequent cloud cover. TOPCon cells combined with a half-cut cell layout improve performance under diffuse irradiance and partial shading scenarios. The low temperature coefficient of Pmax (–0.30%/°C) minimizes power loss during summer heat peaks while maintaining solid output during cooler months. ### Is the Sharp NB-JD at 580 Wp suitable for large commercial and utility-scale PV installations? Yes, the NB-JD Series was designed specifically for utility-scale ground-mount arrays and large commercial and industrial (C&I) rooftops. With up to 580 Wp output and a 1500 V maximum system voltage, longer strings can be configured to reduce BoS costs. The glass-glass construction provides enhanced resistance to salt mist, ammonia, and sand — critical durability factors for open-field installations over multiple decades. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/2310-NBJD-575-580-BF-HC-Mono-Datasheet-EN-15344efee518.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +2.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +2.2 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +50 W, cooler, +1.9 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 16 kg lighter, +1.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | -40 W, lighter, +1.9 pp | | [Sharp NU-JD540](https://comparepv.com/panel/sharp-nu-jd540) | 540 W | Lighter, -1.6 pp, -5 yr warranty | | [Sharp NU-JD545](https://comparepv.com/panel/sharp-nu-jd545) | 545 W | Lighter, -1.3 pp, -5 yr warranty | | [Sharp NU-JD550](https://comparepv.com/panel/sharp-nu-jd550) | 550 W | Lighter, -1.1 pp, -5 yr warranty | | [Sharp NB-JD570](https://comparepv.com/panel/sharp-nb-jd570) | 570 W | -10 W, -0.4 pp | | [Sharp NB-JD575](https://comparepv.com/panel/sharp-nb-jd575) | 575 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +70 W, lighter, +2.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +65 W, lighter, +2.6 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +60 W, lighter, +2.4 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/sharp-nb-jd580 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.