--- title: "Jolywood JW-HD144N-R0-585W 585W Solar Panel - Specs & Review | ComparePV" description: "Jolywood JW-HD144N-R0-585W 585W solar panel. Specs: 22.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd144n-r0-585w" updated: 2026-09-11 --- # Jolywood JW-HD144N-R0-585W Strong in heat, no clear weak spot 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Jolywood - **Model:** JW-HD144N-R0-585W - **Series:** JW Pro Series JW-HD144N-R0 (570-595W) - **Rated power:** 585 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) | 585 W | 580 W | Typical | | | Module efficiency | 22.70% | 22.44% | Strong - top 25% | 3,307 | | Power density | 226.5 | 224.4 | Typical | 3,500 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight (kg) | 31.5 kg | 31.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.70% | 22.44% | Strong - top 25% | 3,307 | | Power density | 226.5 | 224.4 | Typical | 3,500 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight per kWp | 53.8 | 53.8 | Typical | 7,897 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 4% of the TOPCon 550-600 W segment, against a median of -0.290. Ranked 1,309th in the whole database. - **22.70% module efficiency** - Top 25% of the TOPCon 550-600 W segment, against a median of 22.44%. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 585 W - **Efficiency:** 22.70 % - **Voltage at Pmax (Vmp):** 44.61 V - **Current at Pmax (Imp):** 13.11 A - **Open-circuit voltage (Voc):** 51.97 V - **Short-circuit current (Isc):** 13.88 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.280 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.5 kg - **Area:** 2.58 m2 - **Power density:** 226.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 511 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3307 of 14005 | | Power density | 3500 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 7897 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Module efficiency up to 23% — top-tier segment** - The module delivers 22.1–23.0% efficiency, outperforming the direct peer Sunova TS-BW78 (21.3%) and matching top comparables Solarspace Lumina II and Ulica Solar TOPCon (both at 23.03%). This translates into higher energy yield per square meter of roof or ground area. - **N-type TOPCon: low temperature coefficient** - Temperature coefficient of −0.28%/°C and annual linear degradation ≤0.40% (1.00% year-one). For a 1 MWp commercial installation, this results in tens of MWh more cumulative output over 25 years compared to older PERC modules with typical 0.55%/year degradation. - **Bifacial dual-glass — rear-side energy gain** - The dual-glass bifacial construction captures albedo light reflected from the ground. Under typical ground-mount conditions (light-colored surface), rear-side gain adds 5–15% relative to the nameplate front-side output, increasing system yield without expanding the installation footprint. - **30-year linear power warranty ≥87.4%** - Jolywood guarantees ≥99.0% power retention after year 1, ≥97.0% after year 5, and ≥87.4% after year 30 at 0.40%/year degradation — per the official Jolywood warranty document (jolywood.com). Many standard Tier-1 PERC competitors offer only a 25-year warranty with an 84.8% end-of-life floor. - **BNEF Tier 1 — confirmed bankability** - Jolywood is listed on the BloombergNEF Tier 1 module manufacturers list (confirmed Q2 2026), enabling independent commercial bank financing of utility-scale projects. This reduces the cost of capital for PV farm developers and eliminates the risk of lender rejection based on manufacturer bankability. ## Cons - **12-year product warranty** - The product workmanship warranty is 12 years, below the 15-year standard offered by leading Tier-1 manufacturers such as JA Solar, LONGi, and Trina Solar. For commercial investors with a 12–15 year payback horizon, this gap may affect risk assessments by insurers and project finance lenders. ## About this series The Jolywood JW Pro Series JW-HD144N-R0 (570-595W) was designed to maximize energy yield in every square meter. This is a **bifacial** module with **dual glass** construction, enabling it to truly utilize reflected light and boost energy production without expanding the installation. The application of **n-type TOPCon cells** translates to more stable performance over time - lower degradation rates and better resilience in demanding conditions, such as high temperatures and low irradiance. In practice, this series addresses typical investor concerns: rapid power degradation over the years, sensitivity to micro-cracks, and PID risk. Features like high anti-PID resistance and a refined half-cell design with multiple busbars help improve performance under partial shading. This is a targeted choice for commercial installations, PV farms, carports, and flat roofs, where **durability and long-term yield** outperform specifications listed in the catalog. ## Notable figures - At 22.7% efficiency, this panel is on par with typical \*\*TOPCon 550-600W\*\* modules - At 226.5 W/m² power density, roof space requirements are typical for \*\*TOPCon 550-600W\*\* panels - Temperature coefficient of -0.28%/°C matches the \*\*TOPCon 550-600W\*\* median - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - #3307 for efficiency, #1309 for temperature performance out of 14005 panels ## Questions ### What warranty does the Jolywood JW Pro Series JW-HD144N-R0 come with? The JW-HD144N-R0 series includes a 12-year product warranty and a 30-year linear power output warranty. Jolywood guarantees at least 97% of rated power after 5 years and a minimum of 80% after 30 years, with an annual degradation rate of just 0.4%. This is among the longest warranties available in the bifacial dual glass premium module segment. ### Do the Jolywood JW-HD144N-R0 panels actually generate more energy thanks to their bifacial design? Yes. The bifacial dual glass construction allows the module to capture light reflected from the ground surface — concrete, gravel, white membranes, or snow — which can boost energy yield by up to 30%, depending on ground albedo and mounting configuration. The highest gains are seen on utility-scale PV farms with light-colored surfaces and in carport installations with open space beneath the modules. ### How do the n-type TOPCon cells in the JW-HD144N-R0 series compare to standard PERC cells? N-type TOPCon cells offer higher module efficiency (up to 23.2%), lower first-year degradation (approx. 1% vs. 2-3% for PERC), and lower annual degradation (0.4% vs. 0.5-0.7%). They are also inherently resistant to PID (Potential Induced Degradation) and perform better in low-light conditions and at high temperatures, resulting in significantly higher total energy yield over a 30-year system lifetime. ### How do the Jolywood JW-HD144N-R0 panels perform in very high temperatures during summer? These modules feature a power temperature coefficient of -0.30%/°C, which is lower than typical PERC cells (-0.35% to -0.40%/°C). In practical terms, at a cell temperature of 65°C the JW-HD144N-R0 loses approximately 7.5% of rated power, whereas a PERC module may lose 9-10%. This advantage compounds over hot summer months, delivering meaningfully higher seasonal energy output. ### Is the Jolywood JW-HD144N-R0 series suitable for utility-scale PV farms or flat commercial rooftops? Yes, this series is specifically designed for commercial installations, utility-scale PV farms, carports, and flat rooftops. With up to 595 W output and module efficiency reaching 23.2%, it maximizes power density on limited surface areas. The 1500 V DC system voltage rating allows for longer strings and reduced BoS costs, while the dual glass construction extends module longevity under demanding environmental conditions. ### Are the Jolywood JW-HD144N-R0 panels compatible with popular inverters such as Fronius, SMA, or Huawei? Yes. The JW-HD144N-R0 modules are rated for up to 1500 V DC system voltage and are fully compatible with standard three-phase MPPT inverters from Fronius, SMA, Huawei, Solis, and Growatt. Before finalizing your design, verify that the string's Isc and Voc values fall within the input window of your specific inverter model to ensure safe and optimal operation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/4ad01d15850fa614-329bef93dcec.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -25 W, lighter, +2.1 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -30 W, lighter, +1.9 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +50 W, lighter, +1.9 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +45 W, cooler, +1.7 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | -35 W, 15 kg lighter, +1.7 pp | | [Jolywood JW-HT144N-565](https://comparepv.com/panel/jolywood-jw-ht144n-565) | 565 W | -20 W, lighter, -0.8 pp | | [Jolywood JW-HD144N-R0-570W](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd144n-r0-570w) | 570 W | -15 W, -0.6 pp | | [Jolywood JW-HD144N-R0-575W](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd144n-r0-575w) | 575 W | -10 W, -0.4 pp | | [Jolywood JW-HD144N-R0-580W](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd144n-r0-580w) | 580 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +65 W, lighter, +2.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +60 W, lighter, +2.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +55 W, lighter, +2.1 pp | --- Source: https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd144n-r0-585w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.