CSI Solar Co. Ltd. CS7N-670MB-AG

Mono-c-Si Bifacial

670 W Pmax

45.8 V Voc

18.55 A Isc

38.7 V Vmp

17.32 A Imp

21.83 % eff.

0.7889 FF

66 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	670.284	W
PTC Power	PTC	624.4	W
Open-circuit voltage	V_oc_ref	45.8	V
Short-circuit current	I_sc_ref	18.55	A
Max-power voltage	V_mp_ref	38.7	V
Max-power current	I_mp_ref	17.32	A
Fill factor	FF	0.7889	—
Efficiency (STC)	η	21.83	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.009831	A/°C
Voc temperature coefficient	beta_oc	-0.134194	V/°C
Pmax temperature coefficient	gamma_r	-0.39	%/°C
NOCT	T_NOCT	43.7	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.83496	V
Light-generated current (ref)	I_L_ref	18.566	A
Saturation current (ref)	I_o_ref	2.62e-10	A
Series resistance	R_s	0.08398	Ω
Shunt resistance (ref)	R_sh_ref	97.588	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	14.6289	%

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-0.2531	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 Yes

BIPV No

Cells in series 66

Module area 3.07 m²

NOCT 43.7 °C

Temp. coefficient of Pmax -0.390 %/°C

Temp. coefficient of Voc -0.293 %/°C

Temp. coefficient of Isc 0.053 %/°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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