Efficiency leader, no clear weak spot
The GCL-NT10/72GDF series represents a new generation of solar modules built on N-type TOPCon cells, engineered to maximize energy yield on limited roof or ground space. The combination of half-cut cell technology and a double-glass bifacial construction allows the module to capture reflected radiation on both sides, resulting in higher energy output compared to conventional monofacial panels, especially on bright, reflective surfaces. N-type cells deliver lower first-year degradation and reduced susceptibility to LID and LeTID effects, keeping the installation's performance stable throughout its lifetime. The low power temperature coefficient helps the panels perform better on hot days, limiting output losses during summer months. The double-glass build increases mechanical durability and extends module lifespan, supporting a long product and power warranty. The GCL-NT10/72GDF series suits both residential prosumer installations and larger commercial projects, where an optimal performance-to-footprint ratio and a predictable, low levelized cost of energy over the system's lifetime matter most.
Ranking
Signals from the data
Commercial, utility-scale, shaded-installations and hot-climate.
Top 20% of the TOPCon 600-650 W segment, against a median of 22.80%.
Top 21% of the TOPCon 600-650 W segment, against a median of 227.7.
Efficiency up to 23.81% surpasses all compared competitors: Longi Hi-MO X6 Explorer (22.8%), JA Solar JAM72D40 LB (23.2%), and Risen TITAN (21.7%) at the same maximum power of 615 Wp. This translates into higher energy yield per unit of roof area.
N-type TOPCon cells exhibit lower first-year degradation and reduced susceptibility to LID/LeTID compared to older PERC cells, while the dual-glass bifacial construction further improves mechanical durability.
A value of -0.29%/°C is better than the typical -0.35 to -0.40%/°C of conventional PERC modules, limiting output losses on hot days and improving annual yield in warmer climates.
The dual-sided construction captures reflected irradiance from the rear side, providing additional energy production, especially over bright, reflective roof or ground surfaces.
GCL has operated since 1990 and is classified as a Tier-1 bankable manufacturer, reducing financial risk and easing bank financing for the project.
GCL offers a 12-year product warranty, while the direct peer comparable Longi Hi-MO X6 Explorer (615 Wp) provides 15 years of product warranty with the same 30-year power warranty. This gap may matter when assessing service risk over a longer ownership horizon.
- Efficiency of 23.2% matches the TOPCon 600-650W median
- 232.3 W/m² power density - 4.6 W/m² more than TOPCon 600-650W median (227.7 W/m²), more power per roof area
- Temperature coefficient of -0.29%/°C matches the TOPCon 600-650W median
- 31.1 kg weight - 1.7 kg lighter than TOPCon 600-650W median (32.8 kg), reducing installation effort
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Datasheet charts
Measured curves published by GCL in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 600 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.
Found 2327 panels of the same or similar size to this one, within ±10 mm. See them here Found 2369 panels of the same or similar size to this one, within ±25 mm. See them here Found 2383 panels of the same or similar size to this one, within ±50 mm. See them here Found 2548 panels of the same or similar size to this one, within ±100 mm. See them here
About the GCL-NT10/72GDF series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.