--- title: "Jolywood JW-HD120N-R3-495 495W Solar Panel - Specs & Review | ComparePV" description: "Jolywood JW-HD120N-R3-495 495W solar panel. Specs: 22.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd120n-r3-495" updated: 2026-09-11 --- # Jolywood JW-HD120N-R3-495 Strong in heat, heavy for its output 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Jolywood - **Model:** JW-HD120N-R3-495 - **Series:** JW-HD120N Series (Black Series) - **Rated power:** 495 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 495 W | 465 W | Strong - top 4% | | | Module efficiency | 22.40% | 22.52% | Typical | 4,774 | | Power density | 223.9 | 225.2 | Typical | 4,873 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 1,309 | | Weight (kg) | 27.3 kg | 24.0 kg | Weak - bottom 15% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.40% | 22.52% | Typical | 4,774 | | Power density | 223.9 | 225.2 | Typical | 4,873 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 1,309 | | Weight per kWp | 55.2 | 52.2 | Weak - bottom 15% | 9,577 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 11% of the TOPCon 450-500 W segment, against a median of -0.290. ### Watch out for - **55.2 kg per kWp** - Bottom 15% of the TOPCon 450-500 W segment, against a median of 52.2. - **Best for:** Residential and commercial. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 495 W - **Efficiency:** 22.40 % - **Voltage at Pmax (Vmp):** 37.29 V - **Current at Pmax (Imp):** 13.27 A - **Open-circuit voltage (Voc):** 43.38 V - **Short-circuit current (Isc):** 14.06 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:** 120 - **Bifacial:** yes ### Physical - **Length:** 1950 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 27.3 kg - **Area:** 2.21 m2 - **Power density:** 223.9 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:** 433 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4774 of 14005 | | Power density | 4873 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 9577 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Efficiency 22.2–23.3% – top of segment** - Max. efficiency of 23.3% places the series above Canadian Solar TOPBiHiKu6 (22.8%) and nearly on par with Sunpro TOPCon 210R BIFACIAL (23.17%). The 22.2% lower bound applies only to the 490 Wp variant; the 510–515 Wp variants reach 23.1–23.3% within the same module footprint. - **N-type TOPCon – zero LID, low degradation** - N-type cell architecture eliminates Light Induced Degradation (LID) inherent to P-type PERC. The manufacturer-confirmed max. annual degradation of 0.40%/yr (Year 1: max. −1%) means the module retains at least 95.4% output after 10 years — approximately 2–3 percentage points more than comparable PERC products. - **30-year linear performance warranty – 87.4% guaranteed** - Jolywood guarantees a minimum of 87.4% of rated power after 30 years at 0.40%/yr degradation, making it one of the longest and most favorable performance warranties in its price class — most PERC modules offer 25 years down to ~84.8%. - **Bifacial glass-glass construction** - The glass-glass build improves mechanical resistance (up to 5,400 Pa snow load), reduces moisture ingress (lower PID risk), and protects cells against microcracks. The bifacial design enables 10–30% additional energy harvest from reflected irradiance — realistic on light-colored gravel ballast, white membranes, or ground surfaces with albedo ≥ 0.25. - **BNEF Tier-1 bankable (since Q2 2026)** - Jolywood joined the BloombergNEF Tier-1 bankable manufacturers list in Q2 2026 (list expanded to 42 producers). Tier-1 status confirms module eligibility for projects financed by independent commercial banks and simplifies insurance underwriting for commercial-scale installations. ## Cons - **12-year product warranty** - The product and workmanship warranty covers 12 years, which is shorter than the 15-year product warranty offered by Huasun (Aurora Pro series) for HJT modules in the same 490–515 Wp power class. For projects with a financing horizon beyond 12 years, the difference is material when pursuing latent-defect claims. - **Bifacial yield highly albedo-dependent** - The claimed 10–30% rear-side energy gain requires substrate albedo ≥ 0.25 and a minimum roof clearance of ~15–30 cm. Typical Polish pitched-roof installations with dark roof tiles or bituminous membranes have albedo of 0.05–0.12, limiting the actual bifacial gain to 2–6%. On standard rooftop systems the bifacial argument has a marginal impact on LCOE. ## About this series The Jolywood JW-HD120N (Black Series) are solar panels designed for maximum energy yield in demanding installation conditions - without compromising on aesthetics. Key features include **N-type cells in TOPCon technology**, which help minimize power degradation over time and ensure stable performance, even when traditional panels lose efficiency more quickly. The **bifacial construction** allows capturing additional energy from reflected light, effectively boosting the economic viability on bright rooftops, ground installations, or systems with appropriately designed backs. Meanwhile, the **glass-glass build** enhances resistance to moisture, loads, and micro-cracks, which is crucial for installations subjected to intense operation. The Black Series also emphasizes a **full, sleek black appearance** - highly valued in residential and modern commercial projects. This is an excellent choice for clients seeking to combine high energy yields, durability, and a cohesive appearance for your PV system. ## Notable figures - Efficiency of 22.4% matches the \*\*TOPCon 450-500W\*\* median - Power density of 223.8 W/m² matches the \*\*TOPCon 450-500W\*\* median - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 450-500W\*\* panels - At 27.3 kg, this panel is 3.3 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranty does the Jolywood JW-HD120N Black Series come with? The JW-HD120N series carries a 12-year product warranty covering material defects and workmanship, along with a 30-year linear power output warranty. Under the power warranty, the module must retain at least 87.4% of its rated capacity after 30 years, with annual degradation capped at 0.40% and first-year degradation at 1.00%. These figures are achievable because N-type TOPCon cells are free from LID (light-induced degradation) that affects older P-type PERC technology. ### Does TOPCon technology in the Jolywood JW-HD120N actually improve low-light performance? Yes, N-type TOPCon cells outperform conventional PERC cells under low irradiance conditions. The JW-HD120N series has a temperature coefficient of approximately -0.30%/°C, which means smaller power losses on hot days compared to older-generation modules. In temperate climates like Poland's, where a significant share of annual yield comes from diffuse and overcast conditions, this translates into measurably higher annual energy output over the system's lifetime. ### Will the bifacial design of the JW-HD120N Black Series provide a real benefit on a typical pitched roof? On a standard pitched roof with dark roof tiles, the bifacial gain is modest, typically 2–5%, because little reflected light reaches the rear glass. The bifacial advantage is most pronounced on light-colored surfaces such as white TPO membranes, gravel ballast, or ground-mount systems with adequate clearance. Even on a conventional roof, the glass-glass construction still pays off through superior mechanical durability, reduced moisture ingress, and a longer service life compared to glass-backsheet modules. ### What does the Black version of the Jolywood JW-HD120N Series mean, and does it affect power output? The Black version features an all-black aesthetic: black anodized frame, black front glass, and black cells. This is particularly valued on visible rooftops and modern residential or commercial buildings where standard silver-framed panels would look out of place. The darker surface absorbs slightly more heat, but given the low temperature coefficient of -0.30%/°C, the real-world impact on annual yield is negligible. Maximum power output reaches 515 Wp regardless of the color variant. ### How many cells does the Jolywood JW-HD120N have, and does it use half-cut cell technology? The JW-HD120N series uses 120 half-cut N-type TOPCon cells (hence the HD120N designation). Half-cut technology splits each cell into two smaller halves, lowering internal resistance and reducing the impact of partial shading — the module operates as two independent half-panels, so a shadow from a chimney or antenna affects only a portion of the output. Combined with N-type TOPCon, this yields a high fill factor and strong performance under real-world installation conditions. ### Is Jolywood a reliable Tier 1 manufacturer, and are the JW-HD120N panels bankable? Yes, Jolywood is classified as a Tier 1 manufacturer by BNEF, confirming financial stability and consistent module quality verified by independent analysts. Jolywood was among the first manufacturers worldwide to commercialize N-type TOPCon cells at industrial scale. The JW-HD120N series remains an active product line. Tier 1 status matters for project financing, as banks and investment funds are more likely to accept modules from such manufacturers as collateral for commercial solar loans. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/afa2438cf6f78db5-fc98847c5b85.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.6 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.4 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.3 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.1 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.1 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.1 pp | | [Jolywood JW-HT120N-R3-485](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-ht120n-r3-485) | 485 W | -10 W, lighter, -0.5 pp | | [Jolywood JW-HT120N-R3-490](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-ht120n-r3-490) | 490 W | Lighter | | [Jolywood JW-HD108N-R2-500](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-500) | 500 W | Very close match | | [Jolywood JW-HD120N-R3-500](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd120n-r3-500) | 500 W | +0.2 pp | | [Jolywood JW-HD108N-R2-505](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd108n-r2-505) | 505 W | +10 W, +0.3 pp | | [Jolywood JW-HT120N-R3-505](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-ht120n-r3-505) | 505 W | +10 W, lighter, +0.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +65 W, lighter, +2.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +60 W, lighter, +2.2 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +55 W, lighter, +2.0 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +45 W, lighter, +2.0 pp | --- Source: https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd120n-r3-495 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.