Warranty pick, no clear weak spot
The JA Solar JAM60D10 325-350/MB/1500V series is designed to maximize energy output on limited rooftop space, prioritizing reliability without compromise. These monocrystalline modules feature a glass-glass construction, enabling better resistance to micro-cracks, moisture, and aging compared to many standard film-based panels. The implementation of bifacial technology allows capturing additional reflected light energy-particularly on light-colored roofs, membranes, and high-albedo grounds, significantly improving annual yield.
This series utilizes half-cut cell architecture and PERC technology, which helps minimize resistive losses and maintain performance under partial shading (e.g., from chimneys, antennas, or trees). An additional advantage is the 1500 V system, facilitating longer string designs and reducing losses in commercial installations. This makes it an excellent choice for homes, businesses, and utility-scale PV farms, where stable yield and durable module construction are essential.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Top 16% of the PERC 300-350 W segment, against a median of 25 yrs.
Top 17% of the PERC 300-350 W segment, against a median of -0.360.
Dual-glass encapsulation instead of a conventional EVA/TPT backsheet significantly reduces the risk of microcracks, moisture ingress, and PID degradation - especially critical in thermally demanding installations. IEC 61215 mechanical load tests confirm that glass-glass modules offer meaningfully higher structural durability than standard backsheet panels, resulting in a longer service life.
The module harvests energy from both the front and rear surfaces. Per the manufacturer's datasheet and independent field measurements, bifacial PERC glass-glass modules typically deliver 3-15% more energy than their monofacial equivalents at ground albedo ≥20%. The gain is most pronounced on white roofing membranes, light-colored gravel, and high-albedo ground surfaces.
Splitting cells in half reduces operating current by ~50%, lowering resistive I²R losses and minimizing the impact of partial shading (chimneys, antennas, trees) on full-string output. The power temperature coefficient Pmpp = -0.354%/°C ranks the series in the upper tier of PERC modules for thermal performance.
A rated system voltage of 1500 V DC enables longer string configurations (more modules per string), reducing the number of inverters, DC cable runs, and overall BoS costs by an estimated 5-10% compared to 1000 V systems in commercial rooftop and utility-scale PV projects.
JA Solar has maintained BNEF Tier-1 bankable status continuously for over a decade and exceeded 100 GW annual manufacturing capacity in the Q1 2025 ranking, lending credibility to its warranty commitments. The 30-year linear power warranty guaranteeing ≥87.4% output after that period exceeds the 25-year standard offered by most peers.
The JAM60D10 series was manufactured between 2020 and 2023 and is no longer in active production. This results in limited new-module availability on the open market, risk of no compatible replacements in the event of failure, and difficulty expanding an existing installation with identical panels in the future.
Newer series from market leaders (Jinko Tiger Neo, LONGi Hi-MO 6) use N-type TOPCon or HJT cells, which exhibit lower LID degradation rates and better performance under high-temperature conditions. By choosing this series, the investor forgoes the advantages of N-type technology that became the premium industry standard after 2023.
The series' peak efficiency is 20.4% (350 Wp variant), while direct peer comparables achieve: Jinko JS Solar 120 - 20.7%, YS Solar YS SM-90 - 21.0%. The 0.3-0.6 percentage-point gap translates to needing 1-2 additional modules per 10 kWp system to reach the same nameplate power on the same roof area.
- At 19.5% efficiency, this panel is on par with typical PERC 0-400W modules
- At 194.8 W/m² power density, roof space requirements are typical for PERC 0-400W panels
- Temperature coefficient of -0.35%/°C matches the PERC 0-400W median
- At 22.0 kg, this panel is 1.5 kg heavier than the PERC 0-400W median (20.5 kg) - more demanding for installation crews
- Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
Specifications
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 16 panels of the same or similar size to this one, within ±10 mm. See them here Found 68 panels of the same or similar size to this one, within ±25 mm. See them here Found 438 panels of the same or similar size to this one, within ±50 mm. See them here Found 827 panels of the same or similar size to this one, within ±100 mm. See them here
About the JAM60D10 325-350/MB/1500V Series series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.