LONGi Green Energy Technology Co. Ltd. LR4-72HIBD-425M

Mono-c-Si Bifacial

425 W Pmax

49.4 V Voc

11.02 A Isc

41.0 V Vmp

10.37 A Imp

19.5 % eff.

0.781 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	425.17	W
PTC Power	PTC	400.3	W
Open-circuit voltage	V_oc_ref	49.4	V
Short-circuit current	I_sc_ref	11.02	A
Max-power voltage	V_mp_ref	41.0	V
Max-power current	I_mp_ref	10.37	A
Fill factor	FF	0.781	—
Efficiency (STC)	η	19.5	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.0054	A/°C
Voc temperature coefficient	beta_oc	-0.131404	V/°C
Pmax temperature coefficient	gamma_r	-0.329	%/°C
NOCT	T_NOCT	43.1	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.80831	V
Light-generated current (ref)	I_L_ref	11.0321	A
Saturation current (ref)	I_o_ref	1.48e-11	A
Series resistance	R_s	0.26777	Ω
Shunt resistance (ref)	R_sh_ref	244.772	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	4.5074	%

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-0.0331	Sandia National Laboratories — PVsyst single-diode parameter translation. See data/pvsyst_params.README.md. https://pvpmc.sandia.gov/

Actions

Open in PV Explorer Generate PAN File Datasheet not on file CEC Source Data

Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 72

Module area 2.18 m²

NOCT 43.1 °C

Temp. coefficient of Pmax -0.329 %/°C

Temp. coefficient of Voc -0.266 %/°C

Temp. coefficient of Isc 0.049 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 16 Nov 2022 list

Annual degradation 0.55%/yr

Measured Data

No measured data yet for this module.

Similar Modules

Other manufacturers, same technology and cell count, power within 3 %.