G-Star Pte Ltd GSD7S78T-620WT

Mono-c-Si

620 W Pmax

56.46 V Voc

13.69 A Isc

47.51 V Vmp

13.05 A Imp

22.38 % eff.

0.8021 FF

78 cells

Same test data as GSD7S78T-620BT. 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	620.005	W
PTC Power	PTC	589.7	W
Open-circuit voltage	V_oc_ref	56.46	V
Short-circuit current	I_sc_ref	13.69	A
Max-power voltage	V_mp_ref	47.51	V
Max-power current	I_mp_ref	13.05	A
Fill factor	FF	0.8021	—
Efficiency (STC)	η	22.38	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.005969	A/°C
Voc temperature coefficient	beta_oc	-0.127204	V/°C
Pmax temperature coefficient	gamma_r	-0.2928	%/°C
NOCT	T_NOCT	43.1	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.94568	V
Light-generated current (ref)	I_L_ref	13.69462	A
Saturation current (ref)	I_o_ref	3.4e-12	A
Series resistance	R_s	0.21131	Ω
Shunt resistance (ref)	R_sh_ref	625.49	Ω
Cells in series	N_s	78	—
CEC Adjust factor	Adjust	7.6046	%

Actions

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 78

Module area 2.77 m²

NOCT 43.1 °C

Temp. coefficient of Pmax -0.293 %/°C

Temp. coefficient of Voc -0.225 %/°C

Temp. coefficient of Isc 0.044 %/°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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