Middle of its segment, modest efficiency
Suntech Ultra V Pro mini series (STPXXXS - C54/Nshb) are compact modules in the 108 half-cell format, designed for high power density on rooftops and aesthetic installations. The use of N-type TOPCon cells translates to more stable long-term performance and reduced degradation losses at the start of operation, helping maintain predictable energy production. The half-cut construction improves performance under partial shading - a real advantage in residential roofing, where shading from chimneys or trees is often unavoidable. The ALL-Black variant (Nshb designation) allows creating elegant, visually cohesive installations on modern roofs, without compromising technology. The series also stands out for its improved resistance to phenomena such as PID, thanks to carefully selected lamination materials, increasing reliability in demanding conditions. This is a good choice for homes, small businesses, and premium projects, where performance, durability, and appearance matter.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Tight roof space and roofs where every square metre has to count.
Bottom 5% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 9,828th in the whole database.
Bottom 5% of the TOPCon 400-450 W segment, against a median of 220.2. Ranked 9,843rd in the whole database.
- Module efficiency of 21.0% is 1.0pp below average for TOPCon 400-450W panels (median: 22.0%)
- Power density of 210.0 W/m² is 10.2 W/m² below TOPCon 400-450W median (220.2 W/m²) - needs more roof space
- Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
- At 21.0 kg, weight matches the TOPCon 400-450W median
- In the top 70% for efficiency among all TOPCon panels
Specifications
Datasheet charts
Measured curves published by Suntech in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 410 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 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here
About the Ultra V Pro mini (STPXXXS - C54/Nshb) series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.