CSI Solar Co. Ltd. CS1Y-385MS

Mono-c-Si

385 W Pmax

51.7 V Voc

9.78 A Isc

42.9 V Vmp

8.97 A Imp

19.73 % eff.

0.7611 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	384.813	W
PTC Power	PTC	361.8	W
Open-circuit voltage	V_oc_ref	51.7	V
Short-circuit current	I_sc_ref	9.78	A
Max-power voltage	V_mp_ref	42.9	V
Max-power current	I_mp_ref	8.97	A
Fill factor	FF	0.7611	—
Efficiency (STC)	η	19.73	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.004205	A/°C
Voc temperature coefficient	beta_oc	-0.141141	V/°C
Pmax temperature coefficient	gamma_r	-0.347	%/°C
NOCT	T_NOCT	42.9	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.94782	V
Light-generated current (ref)	I_L_ref	9.80758	A
Saturation current (ref)	I_o_ref	2.77e-11	A
Series resistance	R_s	0.30624	Ω
Shunt resistance (ref)	R_sh_ref	108.583	Ω
Cells in series	N_s	78	—
CEC Adjust factor	Adjust	8.3456	%

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 Pmp0.0688	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 78

Module area 1.95 m²

NOCT 42.9 °C

Temp. coefficient of Pmax -0.347 %/°C

Temp. coefficient of Voc -0.273 %/°C

Temp. coefficient of Isc 0.043 %/°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.

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