Strong in heat, heavy for its output
The Jolywood JW Pro series features panels built with n-type TOPCon technology, specifically engineered to genuinely boost energy yield in conditions where conventional modules quickly lose their edge. Central to this is the bifacial dual-glass construction - the double glass enhances sealing and environmental resilience, while the two-sided cell operation harnesses reflected light from the ground surface. As a result, the JW Pro performs exceptionally well on highly reflective surfaces such as light-colored roofs, membranes, gravel, and ground-mounted structures, where ground reflectivity plays a key role.
In practice, users experience lower degradation and more stable long-term performance, which is crucial for calculations based on self-consumption, PPA, or project financial metrics. Additionally, the series excels in high temperatures and low-light conditions, translating to more predictable yields during seasonal transitions and hot periods.
This series is tailored for investors who prioritize not just nominal power output, but higher energy returns, longevity, and reliability - especially in commercial, industrial, and utility-scale setups.
Ranking
Signals from the data
Commercial, utility-scale, hot-climate and shaded-installations.
Weight-limited structures.
Top 9% of the N-type 550-600 W segment, against a median of -0.290. Ranked 1,309th in the whole database.
Bottom 20% of the N-type 550-600 W segment, against a median of 52.3.
N-type TOPCon cells degrade at 0.4%/year (1.0% in year 1), guaranteeing ≥87.4% of rated power after 30 years. Standard PERC modules degrade at ~0.55%/year, translating to a real yield gap of 3–5% over a 30-year project horizon. The N-type architecture also eliminates LID and LETID effects inherent to P-type technologies.
The glass-glass construction provides certified resistance to salt mist, ammonia, PID, sand, and high humidity — critical for coastal, agricultural, and industrial installations. Eliminating the rear backsheet removes the primary failure mode of delamination and moisture ingress seen in framed modules after 10–15 years of field operation.
Bifacial operation delivers up to 30% additional rear-side power under favorable albedo conditions (white membrane, gravel, snow, light concrete). In typical ground-mount configurations, the bifacial gain ranges from 5–15%, directly improving LCOE without incremental BoS cost.
The top 595 Wp variant reaches 23.0% module efficiency — on par with peer comparables Solarspace Lumina II (23.03%) and Ulica Solar TOPCon 595W (23.03%), and materially above Sunova TS-BW78 (21.3%). Higher efficiency reduces module count for a given system size, lowering BoS costs, cabling runs, and roof loading.
Jolywood is confirmed on the BloombergNEF Tier-1 module manufacturer list (Q1 2026), signaling bankability for project finance. Operating since 2008 and recognized as a pioneer in commercial N-type cell manufacturing, Jolywood's R&D track record and production continuity reduce counterparty risk for long-term PPA and financed projects.
JW Pro carries a 12-year product warranty, falling short of the 15-year standard offered by multiple Tier-1 peers in the premium TOPCon segment — including JA Solar (Tiger Neo), Longi (Hi-MO X6), and Risen. The shorter coverage period shifts the risk of latent defects and manufacturing failures to the system owner earlier in the asset's lifecycle.
144-cell dual-glass modules typically weigh 33–36 kg, approximately 30–50% more than equivalent framed modules (22–26 kg). On existing rooftops with limited structural load capacity, this requires a structural audit and may generate additional reinforcement costs or necessitate a reduction in module count per roof section.
- At 22.1% efficiency, this panel is on par with typical N-type 550-600W modules
- 220.7 W/m² power density is 3.8 W/m² below N-type 550-600W median (224.5 W/m²) - requires larger installation area
- At -0.28%/°C, hot weather performance is typical for N-type 550-600W panels
- Weight of 31.5 kg is 2.0 kg above N-type 550-600W median (29.5 kg) - verify structural support
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
Specifications
Datasheet charts
Measured curves published by Jolywood in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 570 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here