Middle of its segment, modest efficiency
The DESERV Extreme 120X series consists of RenewSys solar modules built on M10R TOPCon cells, combining high conversion efficiency with the structural durability of a glass-glass design. The use of half-cut cells arranged in a 120-cell configuration reduces power losses under partial shading and lowers stress-related microcracking, resulting in greater long-term reliability. The bifacial dual-glass construction captures reflected light from the ground surface, boosting energy yield without increasing the installation footprint - a particularly attractive feature for ground-mounted solar farms on reflective terrain and industrial rooftops with large flat surfaces. Replacing the traditional rear backsheet with a second glass layer significantly improves resistance to moisture ingress, microcracks, and PID degradation, extending the module's real-world lifespan and keeping power output stable for decades. Thanks to TOPCon technology, these modules achieve a lower temperature coefficient and reduced first-year degradation compared to conventional PERC panels, directly lowering the project's LCOE. The 120X M10R series is well suited for both commercial installations and demanding utility-scale projects, where predictable return on investment and resilience against harsh environmental conditions are key priorities.
Ranking
Signals from the data
Commercial, utility-scale and shaded-installations.
Tight roof space, roofs where every square metre has to count and weight-limited structures.
Bottom 5% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 8,332nd in the whole database.
Bottom 5% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 8,288th in the whole database.
Bottom 6% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 11,074th in the whole database.
M10R TOPCon cells deliver conversion efficiency up to 23.06%, placing the series above comparable models Silfab SIL HM (21%) and Lina Energy LEPV 132 HC ICON PLUS (21.06%) at the same 500 Wp maximum power rating.
RenewSys offers a 30-year linear power output warranty, a premium standard in the TOPCon segment that exceeds the typical 25-year linear warranties offered by many tier-1 manufacturers, reducing investor risk over the long-term operating horizon.
A dual-glass design in place of a traditional polymer backsheet significantly improves resistance to PID degradation, moisture ingress, and microcracks, while enabling additional energy yield from reflected albedo - particularly effective on bright ground surfaces at utility-scale farms and large industrial rooftops.
N-type TOPCon technology exhibits a lower LID coefficient and better performance at high temperatures than legacy PERC cells, translating into higher real-world annual energy yield and lower LCOE for the installation.
RenewSys (founded in 2011, headquartered in India) holds tier-1 bankable status, easing project financing for utility-scale installations where banks require a documented supply track record and financial references.
Maximum efficiency of 23.06% trails Gokin's GK-3-54HGF (24.5%) at the same 500 Wp maximum power rating - at comparable module area, the competitor delivers higher yield per unit of surface.
The standard product warranty is 12 years, while some premium TOPCon manufacturers now offer 15-25 year product warranties - this may matter when comparing total cost of ownership in utility-scale projects.
- Module efficiency of 21.4% is 1.1pp below average for TOPCon 450-500W panels (median: 22.5%)
- At 214.4 W/m², this panel generates 10.8 W/m² less per unit area than TOPCon 450-500W median (225.2 W/m²)
- Temperature coefficient of -0.29%/°C matches the TOPCon 450-500W median
- At 26.5 kg, this panel is 2.5 kg heavier than the TOPCon 450-500W median (24.0 kg) - more demanding for installation crews
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Datasheet charts
Measured curves published by Renewsys in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 465 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 491 panels of the same or similar size to this one, within ±10 mm. See them here Found 767 panels of the same or similar size to this one, within ±25 mm. See them here Found 1282 panels of the same or similar size to this one, within ±50 mm. See them here Found 1474 panels of the same or similar size to this one, within ±100 mm. See them here
About the DESERV Extreme 120X (M10R TOPCon Bifacial Dual Glass) series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.