Solid all-round for its segment
The BYD AURO N-Type TOPCon Bifacial Module (NLBK-24) series is designed for installations where not only energy yield but also performance in demanding conditions are important. These modules are based on N-Type TOPCon solar cells, which ensure stable energy production over the long term and high resistance to typical degradation mechanisms. A key advantage of the NLBK-24 is its bifacial design - the panel can also utilize reflected light from the ground, which helps improve annual energy yield without increasing the installation area. This works well on bright roofs, with racking systems on flat roofs, and in ground-mounted systems.
Another distinguishing feature of this series is controlled light transmission, which makes the module suitable for applications where partial illumination is required (e.g., awnings, carports). The use of SMBB technology supports better current collection and reduces losses due to shading, while PID resistance ensures reliable operation in installations exposed to harsh electrical conditions.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
The power temperature coefficient is -0.30%/°C, outperforming typical PERC modules (-0.35 to -0.40%/°C). On hot days (e.g., cell temperature of 60°C), power loss is approximately 10.5% versus 13–15% for PERC — a tangible gain in real-world summer energy yield.
The manufacturer guarantees a maximum annual degradation of 0.50% over 30 years. Leading Tier-1 manufacturers (Jinko, JA Solar, Trina) standardly offer 25-year warranties — the NLBK-24 exceeds them by 5 years, a meaningful advantage for projects subject to bank financing requirements.
Controlled light transmittance makes this series one of the few TOPCon module lines suitable for direct BIPV applications: carports, pergolas, and glazed atrium roofs. This unlocks a market segment inaccessible to standard opaque modules.
Cells with a certified PID resistance guarantee protect systems operating at high DC system voltages (up to 1500 V DC). Super Multi Busbar (SMBB) technology reduces losses under micro-shading conditions and improves current collection across all cells.
BYD (founded 1995, headquartered in China) appears on the BNEF Tier-1 list, evidencing documented financing by independent commercial banks for projects exceeding 10 MW. This reduces credit and insurance risk for both investors and installers.
Module efficiency is significantly lower than the referenced benchmark products: Meyer Burger White at 21.7% and Solaria PowerXT at 20.2%. Even the DMEGC GH400M10T-B48HST achieves 15.48%, matching only the upper bound of the NLBK-24. This is inherent to the semi-transparent construction; however, for a standard rooftop installation it means requiring approximately 30–35% more surface area to achieve the same energy yield as fully opaque TOPCon modules.
The 12-year materials and workmanship warranty is notably shorter than Maxeon's 40-year offering and the 25-year standard provided by Jinko Solar, JA Solar, and Trina Solar. For projects involving long-term bank financing or lease structures, this may present a barrier during underwriting negotiations with insurers.
- Module efficiency of 15.3% is 0.7pp below average for TOPCon 0-400W panels (median: 16.0%)
- 152.9 W/m² power density is 6.9 W/m² below TOPCon 0-400W median (159.8 W/m²) - requires larger installation area
- At -0.30%/°C, hot weather performance is typical for TOPCon 0-400W panels
- At 30.0 kg (6.5 kg above TOPCon 0-400W median of 23.5 kg), requires checking roof load capacity
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
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.
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