SunPower SPR-X21-470-COM

Mono-c-Si

470 W Pmax

91.8 V Voc

6.43 A Isc

77.9 V Vmp

6.03 A Imp

21.75 % eff.

0.7958 FF

128 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	469.737	W
PTC Power	PTC	438.0	W
Open-circuit voltage	V_oc_ref	91.8	V
Short-circuit current	I_sc_ref	6.43	A
Max-power voltage	V_mp_ref	77.9	V
Max-power current	I_mp_ref	6.03	A
Fill factor	FF	0.7958	—
Efficiency (STC)	η	21.75	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.001993	A/°C
Voc temperature coefficient	beta_oc	-0.268974	V/°C
Pmax temperature coefficient	gamma_r	-0.352	%/°C
NOCT	T_NOCT	45.7	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	3.43956	V
Light-generated current (ref)	I_L_ref	6.43545	A
Saturation current (ref)	I_o_ref	1.61e-11	A
Series resistance	R_s	0.51322	Ω
Shunt resistance (ref)	R_sh_ref	604.981	Ω
Cells in series	N_s	128	—
CEC Adjust factor	Adjust	-0.0085	%

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 Pmp0.1988	Sandia National Laboratories — PVsyst single-diode parameter translation. See data/pvsyst_params.README.md. https://pvpmc.sandia.gov/

Actions

Open in PV Explorer Generate PAN File Datasheet not on file CEC Source Data

Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 128

Module area 2.16 m²

NOCT 45.7 °C

Temp. coefficient of Pmax -0.352 %/°C

Temp. coefficient of Voc -0.293 %/°C

Temp. coefficient of Isc 0.031 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 16 Nov 2022 list

Annual degradation 0.25%/yr

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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