S SOLARSPECS
First Solar is the largest American solar panel manufacturer and the only major producer of thin-film CdTe modules. First Solar's FS-6455-P-B leverages Thin-Film technology to achieve 18.06% module efficiency and 455W maximum power. Key specs: Voc=222V, Isc=2.58A, Vmp=187.8V, Imp=2.42A. Warranty: 25 years.
🏭View all 218 First Solar models Brand range: 67.5W–550W
Thin-Film

First Solar FS-6455-P-B

Max Power
455W
Efficiency
18.06%
Operating V
187.8V
Warranty
25Y
First Solar FS-6455-P-B logo
Technical Specifications
Open Circuit Voltage (Voc)222V
Short Circuit Current (Isc)2.58A
Voltage at Pmax (Vmp)187.8V
Current at Pmax (Imp)2.42A
Temp. Coefficient of Pmax-0.296%/°C
Dimensions2039 x 1236 x 35 mm
Weight31.5kg
NOCT50.1°C
PTC Rating429.3W
📋 Data verified: June 2026 📄 Specs based on STC (1000 W/m², 25°C, AM 1.5) 🏷️ 218 First Solar models in database

FAQ

How does temperature affect the First Solar FS-6455-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-6455-P-B?

The First Solar FS-6455-P-B is rated at 455W under STC (1000 W/m², 25°C, AM 1.5).

How efficient is the First Solar FS-6455-P-B?

This panel has 18.06% efficiency, which is standard for commercial solar panels.

How long is the warranty for the First Solar FS-6455-P-B?

The FS-6455-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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