S SOLARSPECS
First Solar is the largest American solar panel manufacturer and the only major producer of thin-film CdTe modules. Designed for off-grid applications, the First Solar FS-4100 combines 100W power output with 13.89% efficiency in a Thin-Film form factor.
🏭View all 218 First Solar models Brand range: 67.5W–550W
Thin-Film

First Solar FS-4100

Max Power
100W
Efficiency
13.89%
Operating V
69.4V
Warranty
25Y
First Solar FS-4100 logo
Technical Specifications
Open Circuit Voltage (Voc)87.6V
Short Circuit Current (Isc)1.57A
Voltage at Pmax (Vmp)69.4V
Current at Pmax (Imp)1.44A
Temp. Coefficient of Pmax-0.264%/°C
Dimensions1200 x 600 x 35 mm
Weight9.0kg
NOCT44.6°C
PTC Rating96.1W
📋 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-4100?

This panel has 13.89% efficiency, which is standard for commercial solar panels.

How does temperature affect the First Solar FS-4100?

With a temp coefficient of -0.264%/°C, it outperforms the industry average of -0.35 to -0.40%/°C.

How long is the warranty for the First Solar FS-4100?

The FS-4100 comes with a 25-year product warranty covering defects and degradation.

What is the max power output of the First Solar FS-4100?

The First Solar FS-4100 is rated at 100W under STC (1000 W/m², 25°C, AM 1.5).

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📊 Brand Context

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

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