Tesla Inc. TSP-420

Mono-c-Si

420 W Pmax

40.95 V Voc

13.03 A Isc

34.29 V Vmp

12.25 A Imp

20.69 % eff.

0.7872 FF

60 cells

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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	420.053	W
PTC Power	PTC	395.4	W
Open-circuit voltage	V_oc_ref	40.95	V
Short-circuit current	I_sc_ref	13.03	A
Max-power voltage	V_mp_ref	34.29	V
Max-power current	I_mp_ref	12.25	A
Fill factor	FF	0.7872	—
Efficiency (STC)	η	20.69	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.005863	A/°C
Voc temperature coefficient	beta_oc	-0.10688	V/°C
Pmax temperature coefficient	gamma_r	-0.345	%/°C
NOCT	T_NOCT	42.8	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.52029	V
Light-generated current (ref)	I_L_ref	13.0428	A
Saturation current (ref)	I_o_ref	2.56e-11	A
Series resistance	R_s	0.15673	Ω
Shunt resistance (ref)	R_sh_ref	159.516	Ω
Cells in series	N_s	120	—
CEC Adjust factor	Adjust	9.932	%

The CEC list gives 120 cells in series, which puts 0.34 V on each cell. A silicon cell gives 0.55 to 0.80 V, so PV Ivy uses 60 cells in series for the .PAN file and Similar Modules, found from half the CEC count (it counts every half cell).

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 60 (inferred, CEC lists 120)

Module area 2.03 m²

NOCT 42.8 °C

Temp. coefficient of Pmax -0.345 %/°C

Temp. coefficient of Voc -0.261 %/°C

Temp. coefficient of Isc 0.045 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

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