SunPower SPR-X21-255

Mono-c-Si

254.66 W Pmax

51.0 V Voc

6.3 A Isc

42.8 V Vmp

5.95 A Imp

21.54 % eff.

0.7926 FF

72 cells

IV curves not yet precomputed for this module. Run python manage.py precompute_iv_curves to generate them.

CEC Single-Diode Model Parameters

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	254.66	W
PTC Power	PTC	241.7	W
Open-circuit voltage	V_oc_ref	51.0	V
Short-circuit current	I_sc_ref	6.3	A
Max-power voltage	V_mp_ref	42.8	V
Max-power current	I_mp_ref	5.95	A
Fill factor	FF	0.7926	—
Efficiency (STC)	η	21.54	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.00252	A/°C
Voc temperature coefficient	beta_oc	-0.1224	V/°C
Pmax temperature coefficient	gamma_r	-0.3	%/°C
NOCT	T_NOCT	43.6	°C
CEC Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.78245	V
Light-generated current (ref)	I_L_ref	6.30571	A
Saturation current (ref)	I_o_ref	—	A
Series resistance	R_s	0.42778	Ω
Shunt resistance (ref)	R_sh_ref	472.248	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	4.4117	%

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 72

Module area 1.182 m²

Dimensions 1.559 × 0.758 m

NOCT 43.6 °C

CEC listing date 11/16/2022

Annual degradation 0.25%/yr

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