Solid all-round for its segment
The N series G12R TOPCon Bifacial from RedSolar is engineered to make the most of available roof space while delivering dependable long-term energy output. The use of N-type TOPCon cells in the rectangular G12R format achieves a favorable power-to-area ratio, which matters when installation space is limited on both pitched roofs and ground-mount systems. The panel features bifacial technology, capturing additional energy from the rear side of the module and improving real-world energy yield throughout its service life. The multi-busbar cell structure reduces resistive losses and increases resistance to microcracks, resulting in more stable performance over time. A low power temperature coefficient means the module retains high efficiency even on hot summer days, which is particularly relevant given Poland's variable solar irradiance conditions. The sleek black frame allows for seamless visual integration with roofing in prosumer installations. This series answers the needs of investors seeking a balance between performance, durability, and aesthetics, suited to both residential and commercial segments, while backed by long-term product and power warranties.
Ranking
Signals from the data
Utility-scale and commercial.
The series' top-end efficiency (23%) matches leading peer comparables (HT-SAAE HT66-18X, Weran Solar LR7-72HTH – both 23%) and exceeds MY Solar's G&A TOPCon (22.95%), placing it in the top tier of the TOPCon segment.
The double-sided design captures diffuse and reflected irradiance on the module's rear surface, delivering a real-world annual energy gain over mono-facial modules of equal nominal power, particularly in ground-mount installations or on high-albedo surfaces.
The increased busbar count reduces resistive losses during current flow and lowers susceptibility to microcracks, translating into more stable module performance across thermal cycling over the system's lifetime.
A 30-year power output warranty represents top-tier standard for the TOPCon segment and matches comparable offerings from peer manufacturers, reducing investor risk in long-term energy yield forecasting.
The rectangular G12R cell format (210×182.2 mm) delivers a favorable power-to-area ratio, which matters for pitched-roof installations with constrained mounting surface.
The 12-year product warranty is shorter than the 15-year terms now offered by some tier-1 manufacturers in the premium TOPCon segment, even though the power warranty (30 years) is on par with competitors.
The series' weakest variant achieves 22.2% efficiency, below all three listed peer comparables (HT-SAAE 23%, Weran Solar 23%, MY Solar 22.95%). The gap depends on which power variant within the 600-620 Wp range is selected.
- Efficiency of 22.8% matches the TOPCon 600-650W median
- At 227.7 W/m² power density, roof space requirements are typical for TOPCon 600-650W panels
- At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- In the top 19% for efficiency among all TOPCon panels
Specifications
Datasheet charts
Measured curves published by RedSolar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 615 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.
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