Hanwha Q CELLS QPEAK DUO ML-G12S7/BFG 660

Mono-c-Si Bifacial

660 W Pmax

45.68 V Voc

18.36 A Isc

37.94 V Vmp

17.39 A Imp

21.77 % eff.

0.7867 FF

66 cells

Same test data as QPEAK DUO ML-G12S3/BFG 660. 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	659.777	W
PTC Power	PTC	617.4	W
Open-circuit voltage	V_oc_ref	45.68	V
Short-circuit current	I_sc_ref	18.36	A
Max-power voltage	V_mp_ref	37.94	V
Max-power current	I_mp_ref	17.39	A
Fill factor	FF	0.7867	—
Efficiency (STC)	η	21.77	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.006242	A/°C
Voc temperature coefficient	beta_oc	-0.110546	V/°C
Pmax temperature coefficient	gamma_r	-0.324	%/°C
NOCT	T_NOCT	46.3	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.61792	V
Light-generated current (ref)	I_L_ref	18.37342	A
Saturation current (ref)	I_o_ref	9.94e-12	A
Series resistance	R_s	0.15343	Ω
Shunt resistance (ref)	R_sh_ref	209.923	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	6.917	%

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Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 66

Module area 3.03 m²

NOCT 46.3 °C

Temp. coefficient of Pmax -0.324 %/°C

Temp. coefficient of Voc -0.242 %/°C

Temp. coefficient of Isc 0.034 %/°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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