Suntech Power STP305-24/Vdx

Multi-c-Si

305 W Pmax

45.1 V Voc

8.79 A Isc

37.0 V Vmp

8.25 A Imp

15.73 % eff.

0.77 FF

72 cells

Same test data as STP305-24/Vd and 2 other listings. 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	305.25	W
PTC Power	PTC	276.5	W
Open-circuit voltage	V_oc_ref	45.1	V
Short-circuit current	I_sc_ref	8.79	A
Max-power voltage	V_mp_ref	37.0	V
Max-power current	I_mp_ref	8.25	A
Fill factor	FF	0.77	—
Efficiency (STC)	η	15.73	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.007621	A/°C
Voc temperature coefficient	beta_oc	-0.192983	V/°C
Pmax temperature coefficient	gamma_r	-0.4339	%/°C
NOCT	T_NOCT	45.7	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.96712	V
Light-generated current (ref)	I_L_ref	8.79512	A
Saturation current (ref)	I_o_ref	9.61e-10	A
Series resistance	R_s	0.28289	Ω
Shunt resistance (ref)	R_sh_ref	485.418	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	-8.052	%

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 Pmp0.2246	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 Multi-c-Si

Bifacial No

BIPV No

Cells in series 72

Module area 1.94 m²

Dimensions 1.956 × 0.992 m

NOCT 45.7 °C

Temp. coefficient of Pmax -0.434 %/°C

Temp. coefficient of Voc -0.428 %/°C

Temp. coefficient of Isc 0.087 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 16 Nov 2022 list

Annual degradation 0.55%/yr

Measured Data

No measured data yet for this module.

Same Test Data

4 listings with identical nameplate test data, one per frame, color or backsheet version.

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