Suzhou Talesun Solar Technologies Co. Ltd. TD7G78M-590

Mono-c-Si Bifacial

590 W Pmax

53.87 V Voc

13.93 A Isc

45.25 V Vmp

13.04 A Imp

21.11 % eff.

0.7863 FF

78 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	590.06	W
PTC Power	PTC	555.8	W
Open-circuit voltage	V_oc_ref	53.87	V
Short-circuit current	I_sc_ref	13.93	A
Max-power voltage	V_mp_ref	45.25	V
Max-power current	I_mp_ref	13.04	A
Fill factor	FF	0.7863	—
Efficiency (STC)	η	21.11	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.006157	A/°C
Voc temperature coefficient	beta_oc	-0.137099	V/°C
Pmax temperature coefficient	gamma_r	-0.3351	%/°C
NOCT	T_NOCT	43.3	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.98039	V
Light-generated current (ref)	I_L_ref	13.94713	A
Saturation current (ref)	I_o_ref	2.09e-11	A
Series resistance	R_s	0.18454	Ω
Shunt resistance (ref)	R_sh_ref	150.065	Ω
Cells in series	N_s	78	—
CEC Adjust factor	Adjust	10.3323	%

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-0.0206	Sandia National Laboratories — PVsyst single-diode parameter translation. See data/pvsyst_params.README.md. https://pvpmc.sandia.gov/

Actions

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Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 78

Module area 2.795 m²

NOCT 43.3 °C

Temp. coefficient of Pmax -0.335 %/°C

Temp. coefficient of Voc -0.254 %/°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.

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