Space saver, no clear weak spot
The Jinko Solar Tiger Neo 66HL4M-BDV series are bifacial glass-glass modules, which truly increase yield where reflected and diffuse light matter - on light asphalt, concrete, membrane roofs, and also in elevated ground-mounted installations. The application of bifacial generation allows for better utilization of the same mounting surface and reduces the energy cost throughout the system’s entire life cycle. A key advantage of this series are the N-type TOPCon cells, valued for their stable performance over a long period and lower susceptibility to typical degradation mechanisms compared to many standard modules. Combined with double glass, this results in a better moisture barrier and higher resistance to harsh operating conditions, which is significant, for example, in installations exposed to environmental stress. Additionally, the series utilizes SMBB, supporting efficient current collection and helping maintain performance under non-ideal irradiance conditions. This is an excellent choice for PV farms, commercial projects, carports, and rooftops, where the investor expects high yield and durability without compromise.
Ranking
Signals from the data
Commercial, utility-scale and hot-climate.
Top 1% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 356th in the whole database.
Top 2% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 394th in the whole database.
Top 21% of the TOPCon 600-650 W segment, against a median of 53.1.
The top variant reaches 24.06% module efficiency at 650 Wp, outperforming all listed peer comparables: Astronergy ASTRO N5 (23.3%), BYD AURO N (23.25%), and Einnova TOPCon 630-650W (23.25%). This translates to approximately 3-4% more energy yield from the same mounting area compared to the closest competition.
N-type TOPCon cells are immune to light-induced degradation (LID) and LeTID, which in standard PERC modules cause 1-3% power loss within the first weeks of operation. The temperature coefficient of Pmax is -0.29%/°C versus -0.35%/°C typical of PERC, resulting in meaningfully higher yield on hot days and in high-average-temperature climates.
The manufacturer guarantees ≥99% of rated power after year 1, followed by linear degradation of ≤0.4%/year, ensuring ≥87.4% Pmax after 30 years. Many competitors in the same price segment offer only 25-year warranties with a floor of approximately 84.8%, making this series more favorable in LCOE analysis for long-horizon investment projects.
The dual-glass construction enables rear-side power generation with a declared additional yield of up to 20% on high-albedo surfaces (light gravel, concrete, TPO/PVC membrane). The 2+2 mm double glass simultaneously provides a more effective moisture and UV barrier than a standard backsheet, positively impacting durability in installations exposed to harsh environments.
JinkoSolar achieved 100% bankability in the Bloomberg NEF PV Module Bankability Survey and has been ranked the world's most bankable PV brand for 10 consecutive years (Bloomberg NEF report, March 2025). For utility-scale PV projects and debt-financed installations, this is a critical argument in due diligence reviews by banks and infrastructure funds.
The module weighs 32.4 kg, approximately 25-30% more than comparable single-glass monofacial modules of similar power class (typically 22-26 kg). For rooftop projects, this may require additional structural load analysis or reinforcement of the mounting substructure, increasing BoS costs relative to lighter monofacial alternatives.
- Efficiency of 23.9% is 1.1pp above the TOPCon 600-650W median (22.8%)
- Power density of 238.8 W/m² packs 11.1 W/m² more into the same footprint vs TOPCon 600-650W median (227.7 W/m²)
- Temperature coefficient of -0.29%/°C matches the TOPCon 600-650W median
- #394 for efficiency, #2165 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Jinko Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 645 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here