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Brand range: 335W–485W
Monocrystalline
SunPower SPR-X21-335-BLK
Max Power
335W
Efficiency
20.55%
Operating V
57.3V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 67.9V |
| Short Circuit Current (Isc) | 6.23A |
| Voltage at Pmax (Vmp) | 57.3V |
| Current at Pmax (Imp) | 5.85A |
| Temp. Coefficient of Pmax | -0.331%/°C |
| Dimensions | 1640 x 994 x 35 mm |
| Weight | 20.4kg |
| NOCT | 45.3°C |
| PTC Rating | 318.1W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 110 SunPower models in database
FAQ
How long is the warranty for the SunPower SPR-X21-335-BLK?
The SPR-X21-335-BLK comes with a 25-year product warranty covering defects and degradation.
How efficient is the SunPower SPR-X21-335-BLK?
This panel has 20.55% efficiency, which is above average for commercial solar panels.
What is the max power output of the SunPower SPR-X21-335-BLK?
The SunPower SPR-X21-335-BLK is rated at 335W under STC (1000 W/m², 25°C, AM 1.5).
What are the dimensions and weight of the SunPower SPR-X21-335-BLK?
It measures 1640 x 994 x 35 mm and weighs 20.4kg.
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📊 Brand Context
SunPower offers 110 solar panel models from 335W to 485W.
Browse all SunPower models →