SunPower
SPR-X21-350-BLK
TIER 1
Monocrystalline
350
Pmax (W)
21.47%
Efficiency
—
Voc
25Y
Warranty
Technical Specifications
| Brand | SunPower |
| Model | SPR-X21-350-BLK |
| Max Power (Pmax) | 350W |
| Efficiency | 21.47% |
| Cell Type | Monocrystalline |
Above-Average Efficiency: At 21.47% efficiency, this module offers above-average energy conversion for its class.
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 110 SunPower models in database
FAQ
What are the dimensions and weight of the SunPower SPR-X21-350-BLK?
Dimensions vary by configuration.
What is the max power output of the SunPower SPR-X21-350-BLK?
The SunPower SPR-X21-350-BLK is rated at 350W under STC (1000 W/m², 25°C, AM 1.5).
How efficient is the SunPower SPR-X21-350-BLK?
This panel has 21.47% efficiency, which is above average efficiency for commercial solar panels.
How long is the warranty for the SunPower SPR-X21-350-BLK?
The SPR-X21-350-BLK comes with a 25-year product warranty covering defects and degradation.