ET SOLAR POWER HONGKONG LIMITED ET-NR66TBH640GL

Mono-c-Si

640 W Pmax

49.9 V Voc

16.3 A Isc

41.48 V Vmp

15.43 A Imp

23.71 % eff.

0.7869 FF

66 cells

Same test data as ET-NR66TBH640GB. 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	640.036	W
PTC Power	PTC	609.0	W
Open-circuit voltage	V_oc_ref	49.9	V
Short-circuit current	I_sc_ref	16.3	A
Max-power voltage	V_mp_ref	41.48	V
Max-power current	I_mp_ref	15.43	A
Fill factor	FF	0.7869	—
Efficiency (STC)	η	23.71	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.006944	A/°C
Voc temperature coefficient	beta_oc	-0.108483	V/°C
Pmax temperature coefficient	gamma_r	-0.2956	%/°C
NOCT	T_NOCT	43.2	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.71588	V
Light-generated current (ref)	I_L_ref	16.31454	A
Saturation current (ref)	I_o_ref	3.77e-12	A
Series resistance	R_s	0.19389	Ω
Shunt resistance (ref)	R_sh_ref	217.435	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	10.9405	%

Actions

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 66

Module area 2.7 m²

NOCT 43.2 °C

Temp. coefficient of Pmax -0.296 %/°C

Temp. coefficient of Voc -0.217 %/°C

Temp. coefficient of Isc 0.043 %/°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.

Similar Modules

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