G-Star Pte Ltd GSD8J66M-670BT

Mono-c-Si

670 W Pmax

46.2 V Voc

18.41 A Isc

38.4 V Vmp

17.45 A Imp

21.76 % eff.

0.7878 FF

66 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	670.08	W
PTC Power	PTC	631.3	W
Open-circuit voltage	V_oc_ref	46.2	V
Short-circuit current	I_sc_ref	18.41	A
Max-power voltage	V_mp_ref	38.4	V
Max-power current	I_mp_ref	17.45	A
Fill factor	FF	0.7878	—
Efficiency (STC)	η	21.76	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.008708	A/°C
Voc temperature coefficient	beta_oc	-0.133518	V/°C
Pmax temperature coefficient	gamma_r	-0.3361	%/°C
NOCT	T_NOCT	43.4	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.69797	V
Light-generated current (ref)	I_L_ref	18.41978	A
Saturation current (ref)	I_o_ref	2.78e-11	A
Series resistance	R_s	0.14507	Ω
Shunt resistance (ref)	R_sh_ref	272.983	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	-2.942	%

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 66

Module area 3.08 m²

NOCT 43.4 °C

Temp. coefficient of Pmax -0.336 %/°C

Temp. coefficient of Voc -0.289 %/°C

Temp. coefficient of Isc 0.047 %/°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

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