--- title: "Jolywood JW-HD108N-R3-440W 440W Solar Panel - Specs & Review | ComparePV" description: "Jolywood JW-HD108N-R3-440W 440W solar panel. Specs: 22.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jolywood-jw-hd108n-r3-440w" updated: 2026-09-11 --- # Jolywood JW-HD108N-R3-440W Strong in heat, heavy for its output 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Jolywood - **Model:** JW-HD108N-R3-440W - **Series:** JW-HD108N Series - **Rated power:** 440 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 435 W | Typical | | | Module efficiency | 22.00% | 22.00% | Typical | 6,517 | | Power density | 220.2 | 220.2 | Typical | 6,328 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight (kg) | 24.6 kg | 22.0 kg | Weak - bottom 24% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.00% | 22.00% | Typical | 6,517 | | Power density | 220.2 | 220.2 | Typical | 6,328 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight per kWp | 55.9 | 51.4 | Weak - bottom 24% | 10,269 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 4% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 1,309th in the whole database. ### Watch out for - **55.9 kg per kWp** - Bottom 24% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential, shaded-installations and hot-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 22.00 % - **Voltage at Pmax (Vmp):** 33.33 V - **Current at Pmax (Imp):** 13.20 A - **Open-circuit voltage (Voc):** 38.77 V - **Short-circuit current (Isc):** 14.00 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:** 108 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.6 kg - **Area:** 2.00 m2 - **Power density:** 220.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 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:** 385 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6517 of 14005 | | Power density | 6328 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 10269 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon: superior temperature coefficient** - The JW-HD108N's N-type TOPCon cells deliver a power temperature coefficient of -0.28%/°C, compared to -0.35% to -0.40%/°C typical of P-type PERC modules. Under real-world conditions where module temperatures routinely exceed 60°C in summer, this advantage translates to a 2–4% higher annual energy yield versus PERC technology. - **30-year linear power warranty (≥87.4% output)** - Jolywood guarantees at least 87.4% of rated power after 30 full years of operation — five years longer than the standard 25-year warranties offered by comparable series from Risen (RSM96-11-440-460BNDG) and SunKean (SKT440~460M12-96D4). The extended warranty horizon lowers the project LCOE and reduces investor risk when structuring project finance. - **Bifacial double-glass construction with up to +25% bifacial gain** - The hermetic glass-glass encapsulation, combined with bifacial cell architecture, enables an additional energy yield of up to +25% over a monofacial module at albedo values ≥20%. The dual-glass build also eliminates moisture-induced degradation (DH), ammonia corrosion, LID, and PID — a critical advantage for installations exposed to high humidity and frequent precipitation. - **BNEF Tier-1 Q2 2026 — bankability confirmed** - Jolywood appears on BloombergNEF's Q2 2026 Tier-1 PV Module Manufacturer list, confirming its ability to participate in projects financed by international banking institutions. Tier-1 status reduces credit risk for lenders and simplifies insurance underwriting for both residential and commercial PV portfolios. - **Compact 108 half-cut cell format for residential rooftops** - The 108 half-cut cell count results in a physically smaller and lighter module footprint compared to the more common 120–132 cell formats, simplifying installation on pitched residential rooftops with limited usable area. The smaller format also reduces per-cell mechanical stress, lowering susceptibility to micro-cracks (MIC) during handling and transport. ## Cons - **Higher module weight (~27 kg) due to double-glass build** - The glass-glass construction results in a module weight of approximately 27.3 kg (per R2 variant datasheets), compared to 20–22 kg for equivalent glass-backsheet modules. On older residential roof structures, a structural assessment or rafter reinforcement may be required, adding to BoS costs. - **Entry-level variant efficiency below top peer comparables** - The lowest-efficiency variant in the series reaches 21.52%, while direct competitors SunKean SKT460 (23.02%) and Risen RSM96-460 (23.00%) start from a higher baseline. The ~1.5 percentage point gap means that 1–2 additional modules per 10 kWp may be required on space-constrained rooftops when compared to the most efficient alternatives in the same segment. ## About this series Jolywood JW-HD108N Series panels are an advanced solution based on innovative **N-type TOPCon cell** technology, which redefines efficiency standards in challenging lighting conditions. This series stands out with its **bifacial (double-sided) glass-glass** construction, which ensures not only additional energy yield from reflected light, but also exceptional resistance to light-induced degradation (LID) and external factors such as moisture or ammonia. The use of a smaller number of cells in the 108 format makes the modules compact and perfectly suited for residential roofs while maintaining high power output. For investors, a key benefit is the **minimal annual efficiency decline**, which translates into stable and predictable profits over decades. Unlike standard P-type modules, the JW-HD108N series offers a better temperature coefficient, allowing the system to operate more efficiently on hot days. It is the ideal choice for those looking for **maximum durability and fire safety** resulting from the hermetic double-glass construction. This solution combines aesthetics with uncompromising technology, outperforming the competition in terms of service life and operational stability in the variable Polish climate. ## Notable figures - Efficiency of 22.0% matches the \*\*TOPCon 400-450W\*\* median - Power density of 220.2 W/m² matches the \*\*TOPCon 400-450W\*\* median - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - Weight of 24.6 kg is 2.6 kg above \*\*TOPCon 400-450W\*\* median (22.0 kg) - verify structural support - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### How does the JW-HD108N Series handle high temperatures — does power drop significantly on hot days? Thanks to N-type TOPCon technology, the power temperature coefficient is approximately -0.28%/°C, which is among the best in its class. On hot, sunny days JW-HD108N modules lose less energy than typical P-type PERC panels, which commonly reach -0.35%/°C. For a 10 kWp system, this difference can translate into several hundred kilowatt-hours of additional annual yield. ### How much extra energy does the bifacial design of the Jolywood JW-HD108N Series actually provide? The bifacial glass-glass construction allows the module's rear side to capture light reflected from the ground or rooftop surface. In ground-mounted installations over a bright surface, rear-side energy gain can reach 10–30% relative to the front side, depending on the albedo of the surroundings. On pitched roofs the effect is smaller but still measurable — especially with light-colored or reflective roofing materials. ### What warranties does the Jolywood JW-HD108N Series carry — product and power output? Jolywood provides a 25-year product warranty covering material and workmanship defects, and a 30-year linear power warranty. Over three decades, modules must maintain a defined output level — typically at or above 87.5% of rated power after 30 years. This is one of the longest power warranties on the market, reflecting Jolywood's confidence in the long-term durability of TOPCon cell technology. ### Does the glass-glass construction of the JW-HD108N improve fire safety for residential rooftop installations? Yes — the hermetically sealed double glass enclosure eliminates the backsheet, which is the primary fire risk in standard modules. The glass construction is non-combustible, resistant to moisture and ammonia, and significantly reduces light-induced degradation (LID). For residential rooftops, this means a higher fire safety classification, reduced long-term degradation, and longer service life in variable climates. ### Which inverters are compatible with the JW-HD108N Series, and do the modules support 1500 V DC systems? The JW-HD108N Series supports a maximum system voltage of 1500 V DC, making it compatible with modern string and central inverters from all major brands including SMA, Fronius, Huawei, and Sungrow. For residential prosumer installations up to 10 kW, a 1000 V DC inverter is sufficient — MPPT string configuration should be verified with a certified installer before commissioning. ### How do the JW-HD108N panels compare to standard P-type PERC modules, and is the price premium justified? The N-type TOPCon cells in the JW-HD108N Series exhibit lower LID and LeTID degradation, a better temperature coefficient, and higher cell efficiency compared to mainstream P-type PERC modules. This translates into more energy harvested from the same roof area and greater output stability over a 30-year operational lifespan. At current installation costs, the panel price premium typically pays back within the first few years of operation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/4bd43d87292c4951-e2efb8506eb5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +50 W, lighter, +2.5 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +50 W, lighter, +2.5 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +45 W, lighter, +2.3 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +45 W, lighter, +2.3 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +45 W, lighter, +2.3 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +45 W, lighter, +2.3 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, cooler, +2.3 pp | | [Jolywood JW-HT108N-R3-430W](https://comparepv.com/panel/jolywood-jw-ht108n-r3-430w) | 430 W | Hotter, lighter, -0.5 pp | | [Jolywood JW-HT108N-R3 435W](https://comparepv.com/panel/jolywood-taizhou-solar-technology-co-ltd-jw-ht108n-r3-435w) | 435 W | Lighter | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +70 W, cooler, +3.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +55 W, lighter, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +60 W, cooler, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +60 W, lighter, +2.5 pp | --- Source: https://comparepv.com/panel/jolywood-jw-hd108n-r3-440w 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.