First Solar Inc. FS-7550A-TR1

CdTe

550 W Pmax

228.8 V Voc

3.08 A Isc

190.4 V Vmp

2.89 A Imp

19.65 % eff.

0.7808 FF

268 cells

Same test data as FS-7550A-FT1. CEC lists each frame, color and backsheet version as its own listing.

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	550.256	W
PTC Power	PTC	512.3	W
Open-circuit voltage	V_oc_ref	228.8	V
Short-circuit current	I_sc_ref	3.08	A
Max-power voltage	V_mp_ref	190.4	V
Max-power current	I_mp_ref	2.89	A
Fill factor	FF	0.7808	—
Efficiency (STC)	η	19.65	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.001463	A/°C
Voc temperature coefficient	beta_oc	-0.622107	V/°C
Pmax temperature coefficient	gamma_r	-0.2947	%/°C
NOCT	T_NOCT	48.9	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	8.03294	V
Light-generated current (ref)	I_L_ref	3.08453	A
Saturation current (ref)	I_o_ref	1.28e-12	A
Series resistance	R_s	4.51646	Ω
Shunt resistance (ref)	R_sh_ref	3071.341	Ω
Cells in series	N_s	268	—
CEC Adjust factor	Adjust	-7.0544	%

Actions

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Module Specifications

Technology CdTe

Bifacial No

BIPV No

Cells in series 268

Module area 2.8 m²

NOCT 48.9 °C

Temp. coefficient of Pmax -0.295 %/°C

Temp. coefficient of Voc -0.272 %/°C

Temp. coefficient of Isc 0.048 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

Same Test Data

2 listings with identical nameplate test data, one per frame, color or backsheet version.

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