La Solar LLC LS550BF

Mono-c-Si Bifacial

550 W Pmax

49.7 V Voc

14.02 A Isc

42.07 V Vmp

13.08 A Imp

21.33 % eff.

0.7897 FF

72 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	550.276	W
PTC Power	PTC	518.0	W
Open-circuit voltage	V_oc_ref	49.7	V
Short-circuit current	I_sc_ref	14.02	A
Max-power voltage	V_mp_ref	42.07	V
Max-power current	I_mp_ref	13.08	A
Fill factor	FF	0.7897	—
Efficiency (STC)	η	21.33	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.005103	A/°C
Voc temperature coefficient	beta_oc	-0.12917	V/°C
Pmax temperature coefficient	gamma_r	-0.3437	%/°C
NOCT	T_NOCT	43.0	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.84285	V
Light-generated current (ref)	I_L_ref	14.03664	A
Saturation current (ref)	I_o_ref	2.64e-11	A
Series resistance	R_s	0.1395	Ω
Shunt resistance (ref)	R_sh_ref	117.563	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	10.1651	%

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 Pmp-0.0252	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 Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 72

Module area 2.58 m²

NOCT 43.0 °C

Temp. coefficient of Pmax -0.344 %/°C

Temp. coefficient of Voc -0.260 %/°C

Temp. coefficient of Isc 0.036 %/°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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