First Solar Inc. FS-280

Thin Film

80 W Pmax

91.5 V Voc

1.22 A Isc

71.2 V Vmp

1.12 A Imp

11.08 % eff.

0.7144 FF

116 cells

IV & PV Curves at STC (1000 W/m², 25 °C)

IV Curves at Multiple Conditions

Irradiance sweep at 25 °C

Temperature sweep at 1000 W/m²

Single-Diode Model Parameters

Source: California Energy Commission module list · retrieved via SAM library · energy.ca.gov · All data sources

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	79.744	W
PTC Power	PTC	76.9	W
Open-circuit voltage	V_oc_ref	91.5	V
Short-circuit current	I_sc_ref	1.22	A
Max-power voltage	V_mp_ref	71.2	V
Max-power current	I_mp_ref	1.12	A
Fill factor	FF	0.7144	—
Efficiency (STC)	η	11.08	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.000594	A/°C
Voc temperature coefficient	beta_oc	-0.230397	V/°C
Pmax temperature coefficient	gamma_r	-0.1672	%/°C
NOCT	T_NOCT	45.9	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	2.67421	V
Light-generated current (ref)	I_L_ref	1.22945	A
Saturation current (ref)	I_o_ref	1.61e-15	A
Series resistance	R_s	10.5385	Ω
Shunt resistance (ref)	R_sh_ref	1361.02	Ω
Cells in series	N_s	116	—
CEC Adjust factor	Adjust	-39.0251	%

Additional Model Sources

Source	Model type	Fit quality	Citation
CEC module list (via SAM library) Default	CEC / De Soto single-diode	—	https://www.energy.ca.gov/media/2367
Sandia PVsyst single-diode fit	PVsyst single-diode	NMBE Pmp5.0031	Sandia National Laboratories — PVsyst single-diode parameter translation. See data/pvsyst_params.README.md. https://pvpmc.sandia.gov/

Actions

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Module Specifications

Technology Thin Film

Bifacial No

BIPV No

Cells in series 116

Module area 0.72 m²

Dimensions 1.2 × 0.6 m

NOCT 45.9 °C

Temp. coefficient of Pmax -0.167 %/°C

Temp. coefficient of Voc -0.252 %/°C

Temp. coefficient of Isc 0.049 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 16 Nov 2022 list

Annual degradation 0.5%/yr

Measured Data

No measured data yet for this module.

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