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Brand range: 400W–555W
Monocrystalline
Yingli Energy Development Co Ltd YL550DF72 e/2
Max Power
550W
Efficiency
21.83%
Operating V
41.9V
Warranty
30Y
Technical Specifications
| Open Circuit Voltage (Voc) | 49.8V |
| Short Circuit Current (Isc) | 14.04A |
| Voltage at Pmax (Vmp) | 41.9V |
| Current at Pmax (Imp) | 13.13A |
| Temp. Coefficient of Pmax | -0.374%/°C |
| Dimensions | 2039 x 1236 x 35 mm |
| Weight | 31.5kg |
| NOCT | 45.9°C |
| PTC Rating | 517.7W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 12 Yingli Energy Development Co Ltd models in database
FAQ
What is the max power output of the Yingli Energy Development Co Ltd YL550DF72 e/2?
The Yingli Energy Development Co Ltd YL550DF72 e/2 is rated at 550W under STC (1000 W/m², 25°C, AM 1.5).
What warranty does Yingli Energy Development Co Ltd provide?
Yingli Energy Development Co Ltd offers a 30-year warranty for the YL550DF72 e/2, reflecting confidence in long-term durability.
How efficient is the Yingli Energy Development Co Ltd YL550DF72 e/2?
This panel has 21.83% efficiency, which is high for commercial solar panels.
What are the dimensions and weight of the Yingli Energy Development Co Ltd YL550DF72 e/2?
It measures 2039 x 1236 x 35 mm and weighs 31.5kg.
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☀️ Top Performer
This Yingli Energy Development Co Ltd model ranks among the brand's most efficient panels at 21.83%.
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