Solid all-round for its segment
The Mysolar USA ALTRA N-Type TOPCon Bifacial (N108) series is designed for maximum energy yield in environments where standard modules struggle - on roofs with reflective surfaces, ground-mounted installations, and structures with increased durability requirements. Thanks to the N-Type TOPCon technology, the modules are better able to withstand degradation and maintain stable production over a longer period, which makes it easier to plan the profitability of the investment. The bifacial design allows for the use of light from both sides, increasing yield in diffuse light conditions and on bright surfaces. The use of dual-glass improves resistance to environmental factors and reduces the risk of problems associated with modules with rear-side films. Furthermore, the arrangement of cells in the half-cut version supports operation in partially shaded conditions and reduces internal losses. This is a good choice for PV farms, carports, commercial roofs, and installations where durability, predictability, and additional yield are important, without complicating the project.
Ranking
Signals from the data
Commercial and shaded-installations.
N-type TOPCon cells exhibit lower LID/LeTID degradation and better high-temperature performance than older PERC cells, translating into more stable annual energy yield over the full 30-year service life.
The bifacial dual-glass construction captures light reflected off the surrounding surface (light-colored roofs, gravel, snow), boosting energy yield, while also eliminating the backsheet delamination risk typical of glass-backsheet modules.
The half-cut cell layout reduces losses under partial shading (leaves, chimneys, adjacent rows) and lowers internal resistance compared to full-size cells.
The 25-year product warranty and 30-year linear power warranty exceed the market-standard 25/25 years, a meaningful factor in LCOE calculations for utility-scale and commercial installations.
Peak efficiency of 22.73% places the series above JA Solar JAM54D40 (22.5%) and Lina Energy LEPV 132 Ultra Premium (22.37%), approaching segment leader Luxor Solar Eco Line N-Type (22.86%) at the same 440 Wp max power.
The lower bound of the efficiency range (21.7%) is notably below all three peer comparables (22.37-22.86%), meaning the weaker variants within the 5-variant N108 lineup meaningfully lag competitors - it is important to verify which specific variant is quoted.
Mysolar USA states it aims to achieve BNEF Tier 1 status, but is not currently listed as a recognized Tier 1 manufacturer - unlike peer comparable JA Solar, an established Tier 1 supplier. This may complicate bank financing for large-scale projects.
The manufacturer operates under the Mysolar USA brand, yet corporate HQ is registered in China (founded 2010), requiring extra verification for Domestic Content eligibility under U.S. IRA tax incentives on projects sourcing this equipment.
- At 21.7% efficiency, this panel is on par with typical TOPCon 400-450W modules
- Power density of 220.1 W/m² matches the TOPCon 400-450W median
- Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
- #7421 for efficiency, #2165 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Mysolar USA in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 420 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.
Alternatives
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