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Brand range: 170W–330W
Monocrystalline
Suntech Power STP290S-20/Wew
Max Power
290W
Efficiency
17.83%
Operating V
31.7V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 39.8V |
| Short Circuit Current (Isc) | 9.55A |
| Voltage at Pmax (Vmp) | 31.7V |
| Current at Pmax (Imp) | 9.15A |
| Temp. Coefficient of Pmax | -0.427%/°C |
| Dimensions | 1640 x 992 x 35 mm |
| Weight | 20.3kg |
| NOCT | 44.4°C |
| PTC Rating | 272.0W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 133 Suntech Power models in database
FAQ
What is the max power output of the Suntech Power STP290S-20/Wew?
The Suntech Power STP290S-20/Wew is rated at 290W under STC (1000 W/m², 25°C, AM 1.5).
How long is the warranty for the Suntech Power STP290S-20/Wew?
The STP290S-20/Wew comes with a 25-year product warranty covering defects and degradation.
What are the dimensions and weight of the Suntech Power STP290S-20/Wew?
It measures 1640 x 992 x 35 mm and weighs 20.3kg.
How efficient is the Suntech Power STP290S-20/Wew?
This panel has 17.83% efficiency, which is standard for commercial solar panels.
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☀️ Top Performer
This Suntech Power model ranks among the brand's most efficient panels at 17.83%.
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