--- title: "Jolywood JW-HD156N-R0-615 615W Solar Panel - Specs & Review | ComparePV" description: "Jolywood JW-HD156N-R0-615 615W solar panel. Specs: 22.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-615" updated: 2026-09-11 --- # Jolywood JW-HD156N-R0-615 Strong in heat, needs the roof space 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Jolywood - **Model:** JW-HD156N-R0-615 - **Series:** JW Pro Series / JW-HD156N-R0 - **Rated power:** 615 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 615 W | 620 W | Typical | | | Module efficiency | 22.00% | 22.80% | Weak - bottom 7% | 6,517 | | Power density | 220.0 | 227.7 | Weak - bottom 6% | 6,655 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 7% | 1,309 | | Weight (kg) | 34.5 kg | 32.7 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.00% | 22.80% | Weak - bottom 7% | 6,517 | | Power density | 220.0 | 227.7 | Weak - bottom 6% | 6,655 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 7% | 1,309 | | Weight per kWp | 56.1 | 53.1 | Weak - bottom 6% | 10,381 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 7% of the TOPCon 600-650 W segment, against a median of -0.290. Ranked 1,309th in the whole database. ### Watch out for - **220.0 watts per square metre** - Bottom 6% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 6,655th in the whole database. - **56.1 kg per kWp** - Bottom 6% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 10,381st in the whole database. - **22.00% module efficiency** - Bottom 7% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 6,517th in the whole database. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Roofs where every square metre has to count, weight-limited structures and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 615 W - **Efficiency:** 22.00 % - **Voltage at Pmax (Vmp):** 47.59 V - **Current at Pmax (Imp):** 12.92 A - **Open-circuit voltage (Voc):** 55.48 V - **Short-circuit current (Isc):** 13.72 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:** 156 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 34.5 kg - **Area:** 2.80 m2 - **Power density:** 220.0 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:** 538 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6517 of 14005 | | Power density | 6655 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 10381 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon – zero LID** - N-type TOPCon cells exhibit zero Light-Induced Degradation (LID) as confirmed by Jolywood in PVEL testing, with an annual degradation rate of 0.40%/yr versus ~0.45%/yr for standard PERC. The temperature coefficient of -0.32%/°C outperforms typical PERC (-0.35%/°C), delivering measurably higher real-world energy yield on warm days. - **80% bifaciality + glass-glass construction** - The module achieves 80% bifaciality, providing up to +25% additional yield over the front-side rating on high-albedo surfaces (snow, white membrane, gravel). The dual-glass 2mm+2mm tempered construction delivers resistance to humidity, salt mist, and ammonia — critical for C&I rooftop and utility-scale PV farms with long operational horizons. - **High power density 22–23.1% efficiency** - The 22.0–23.1% efficiency range places this series at the top of the 615–645 Wp segment. The peak 645 Wp / 23.1% variant directly matches Runergy HY-DH156N8 (645 Wp, 23.1%) and clearly outperforms BYD HALO (645 Wp, 22.79%), reducing the required roof or ground area per unit of installed power. - **30-year linear power warranty** - Jolywood guarantees a linear power degradation schedule to ≥87.4% after 30 years — a longer horizon than the 25-year standard offered by most Tier-1 manufacturers (Trina, JA Solar). The extended warranty reduces perceived risk for project-finance lenders, a meaningful advantage in externally funded C&I projects. - **BNEF Tier-1 manufacturer – bankability** - Jolywood appears on the BNEF Tier-1 list (confirmed Q2 2026), meeting the criteria of supplying own-brand, self-manufactured modules to at least 6 projects ≥1.5 MW each and being accepted by project-finance banks. Annual production capacity of 10 GW/yr mitigates supply-chain risk for large-scale procurement. ## Cons - **Series discontinued (2022–2024)** - The JW-HD156N-R0 series ended production in 2024 after approximately two years on the market. Limited availability of new modules complicates system expansions and power-class matching, while the lack of ongoing production may create difficulties sourcing warranty replacement units in future years. - **Product warranty only 12 years** - The workmanship and materials warranty covers only 12 years, whereas peer comparables in this power class — Canadian Solar HiHero+ HJT and BYD HALO — typically offer 15–25 years. For C&I projects with a 25–30-year asset life, this gap increases exposure to out-of-warranty replacement costs. - **Efficiency trails Canadian Solar HiHero+ HJT** - In the same power class (645 Wp), peer comparable Canadian Solar HiHero+ HJT achieves 23.9% module efficiency versus a maximum of 23.1% for the JW-HD156N-R0 — a gap of ~0.8 percentage points. On space-constrained installations (industrial rooftops, carports), this difference may favor HJT technology despite its higher BoS-adjusted cost. ## About this series The Jolywood JW Pro series, including the JW-HD156N-R0 model, was designed for maximum energy yield in real installation operating conditions - not just in the lab. These modules are based on **N-type TOPCon cells**, known for their excellent long-term parameter stability and high resistance to typical operational losses. Thanks to their **bifacial construction**, the panels can utilize reflected light from the ground surface, providing additional yield where every kWh counts - on light-colored roofs, ground-mounted structures, and installations with high albedo. The **glass-glass dual-string construction** enhances durability and operational reliability in harsher conditions (humidity, temperature variations), while the modern cell string architecture minimizes the impact of partial shading on energy production. This is an excellent choice for investors seeking **low degradation** and reliable performance over many years - particularly suitable for C&I projects, utility-scale PV farms, and high-power-density installations with long payback periods. ## Notable figures - Module efficiency of 22.0% is 0.8pp below average for \*\*TOPCon 600-650W\*\* panels (median: 22.8%) - At 220.0 W/m², this panel generates 7.7 W/m² less per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - Temperature coefficient of -0.28%/°C matches the \*\*TOPCon 600-650W\*\* median - At 34.5 kg (1.8 kg above \*\*TOPCon 600-650W\*\* median of 32.7 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### Is the Jolywood JW Pro JW-HD156N-R0 series still available for purchase? The JW Pro JW-HD156N-R0 series has been discontinued and is no longer actively produced by Jolywood. Availability through distributors may be limited to remaining stock. If you are looking for a current N-type TOPCon alternative from Jolywood, newer series with comparable specifications are recommended. Warranty obligations remain fully valid for units already installed. ### What warranty does the Jolywood JW Pro JW-HD156N-R0 carry? The module comes with a 12-year product warranty covering material and workmanship defects, and a 30-year linear power output warranty. Degradation is capped at 1% in year one and approximately 0.4% per year thereafter — a standard typical of N-type TOPCon technology, outperforming legacy PERC modules. After 30 years, the panel should retain at least 87.4% of its rated power output. ### What does TOPCon technology mean for the Jolywood JW Pro series, and is the N-type premium worth it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture with lower degradation and significantly reduced LID (Light Induced Degradation) compared to PERC. In practice this means higher lifetime energy yield, better performance at elevated cell temperatures, and more stable output year over year. For C&I projects and PV farms with long investment horizons, the improvement in LCOE is measurable and justifies the premium. ### How much additional energy can the bifacial design of the JW Pro JW-HD156N-R0 generate? The bifacial design harvests light reflected from the ground on the rear side of the module. Depending on surface albedo — light gravel, white roofing membrane, or snow — the additional yield typically ranges from 5% to 15% compared to a monofacial module of equal rating. Ground-mounted systems with a bright surface and optimal tilt angle extract the most value from bifaciality. On a dark pitched roof, the gain will be minimal. ### Are the Jolywood JW Pro 645W panels suitable for large commercial and utility-scale PV installations? Yes, the JW Pro series with up to 645 Wp peak power is engineered primarily for C&I and utility-scale PV farms. The high power density and glass-glass construction support 1500 V system voltage, reducing cabling costs and overall BoS expenditure. Combined with a low annual degradation rate of around 0.4%, the bifacial output results in a favorable LCOE profile across the full project lifetime. ### How does the glass-glass construction affect the durability of Jolywood JW-HD156N-R0 panels? Unlike conventional backsheet modules, the glass-glass design uses two tempered glass layers to better protect cells against moisture ingress, thermal cycling, and mechanical stress. This significantly reduces the risk of delamination and contact corrosion over the full service life. The construction is especially valuable in installations exposed to large daily temperature swings, high-humidity environments, or agricultural sites with overhead irrigation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/162a22e3f21b882e-b1fed674a752.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +35 W, lighter, +3.2 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +30 W, lighter, +3.0 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +25 W, lighter, +2.8 pp | | [Longi Solar LR8-66HVD-665M](https://comparepv.com/panel/longi-lr8-66hvd-665m) | 665 W | +50 W, cooler, +2.6 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (665W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-665w-class) | 665 W | +50 W, cooler, +2.6 pp | | [Huayao HY665-B144DSS](https://comparepv.com/panel/huayao-hy665-b144dss) | 665 W | +50 W, lighter, +2.6 pp | | [Sunpro Power SPDG665-BC132R12](https://comparepv.com/panel/sunpro-spdg665-bc132r12) | 665 W | +50 W, cooler, +2.6 pp | | [Jolywood JW-HD156N-R0-620](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-620) | 620 W | Very close match | | [Jolywood JW-HD156N-R0-625](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-625) | 625 W | +10 W, +0.4 pp | | [Jolywood JW-HD156N-R0-630](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-630) | 630 W | +15 W, +0.5 pp | | [Jolywood JW-HD156N-R0-635](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-635) | 635 W | +20 W, +0.7 pp | | [Jolywood JW-HD156N-R0-640](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-640) | 640 W | +25 W, +0.9 pp | | [Jolywood JW-HD156N-R0-645](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-645) | 645 W | +30 W, +1.1 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +65 W, lighter, +3.2 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +60 W, lighter, +3.0 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +85 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-hd156n-r0-615 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.