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Brand range: 190W–350W
Monocrystalline
Shanghai ST Solar STM255-104
Max Power
255W
Efficiency
13.92%
Operating V
51.0V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 63.7V |
| Short Circuit Current (Isc) | 5.56A |
| Voltage at Pmax (Vmp) | 51.0V |
| Current at Pmax (Imp) | 5A |
| Temp. Coefficient of Pmax | -0.46%/°C |
| Dimensions | 1715 x 1068 x 35 mm |
| Weight | 22.9kg |
| NOCT | 47.1°C |
| PTC Rating | 235.4W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 55 Shanghai ST Solar models in database
FAQ
What is the max power output of the Shanghai ST Solar STM255-104?
The Shanghai ST Solar STM255-104 is rated at 255W under STC (1000 W/m², 25°C, AM 1.5).
What are the dimensions and weight of the Shanghai ST Solar STM255-104?
It measures 1715 x 1068 x 35 mm and weighs 22.9kg.
How long is the warranty for the Shanghai ST Solar STM255-104?
The STM255-104 comes with a 25-year product warranty covering defects and degradation.
How efficient is the Shanghai ST Solar STM255-104?
This panel has 13.92% efficiency, which is standard for commercial solar panels.
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📊 Brand Context
Shanghai ST Solar offers 55 solar panel models from 190W to 350W.
Browse all Shanghai ST Solar models →