SunPower SPR-E18-235

Mono-c-Si

235 W Pmax

48.4 V Voc

6.18 A Isc

40.5 V Vmp

5.8 A Imp

18.88 % eff.

0.7853 FF

72 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	234.9	W
PTC Power	PTC	216.0	W
Open-circuit voltage	V_oc_ref	48.4	V
Short-circuit current	I_sc_ref	6.18	A
Max-power voltage	V_mp_ref	40.5	V
Max-power current	I_mp_ref	5.8	A
Fill factor	FF	0.7853	—
Efficiency (STC)	η	18.88	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.00241	A/°C
Voc temperature coefficient	beta_oc	-0.122936	V/°C
Pmax temperature coefficient	gamma_r	-0.324	%/°C
NOCT	T_NOCT	50.3	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.74672	V
Light-generated current (ref)	I_L_ref	6.18759	A
Saturation current (ref)	I_o_ref	5.59e-12	A
Series resistance	R_s	0.41549	Ω
Shunt resistance (ref)	R_sh_ref	338.478	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	6.1692	%

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-0.0112	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 No

BIPV No

Cells in series 72

Module area 1.244 m²

Dimensions 1.559 × 0.798 m

NOCT 50.3 °C

Temp. coefficient of Pmax -0.324 %/°C

Temp. coefficient of Voc -0.254 %/°C

Temp. coefficient of Isc 0.039 %/°C

CEC list Not on the 23 Jun 2026 list

Last listed 16 Nov 2022

Parameters from 16 Nov 2022 list

Annual degradation 0.25%/yr

Measured Data

No measured data yet for this module.

Same Test Data

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

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