S SOLARSPECS
First Solar is the largest American solar panel manufacturer and the only major producer of thin-film CdTe modules. Designed for industrial installations, the First Solar FS-6450-P-B combines 450W power output with 17.86% efficiency in a Thin-Film form factor.
🏭View all 218 First Solar models→ Brand range: 67.5W–550W
Thin-Film

First Solar FS-6450-P-B

Max Power
450W
Efficiency
17.86%
Operating V
186.8V
Warranty
25Y
First Solar FS-6450-P-B logo
Technical Specifications
Open Circuit Voltage (Voc)221.1V
Short Circuit Current (Isc)2.57A
Voltage at Pmax (Vmp)186.8V
Current at Pmax (Imp)2.41A
Temp. Coefficient of Pmax-0.296%/°C
Dimensions2039 x 1236 x 35 mm
Weight31.5kg
NOCT50.1°C
PTC Rating424.6W
📋 Data verified: June 2026 📄 Specs based on STC (1000 W/m², 25°C, AM 1.5) 🏷️ 218 First Solar models in database

FAQ

How efficient is the First Solar FS-6450-P-B?

This panel has 17.86% efficiency, which is standard for commercial solar panels.

How does temperature affect the First Solar FS-6450-P-B?

With a temp coefficient of -0.296%/°C, it outperforms the industry average of -0.35 to -0.40%/°C.

What is the max power output of the First Solar FS-6450-P-B?

The First Solar FS-6450-P-B is rated at 450W under STC (1000 W/m², 25°C, AM 1.5).

How long is the warranty for the First Solar FS-6450-P-B?

The FS-6450-P-B comes with a 25-year product warranty covering defects and degradation.

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First Solar offers 218 solar panel models from 67.5W to 550W.

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