FreeVolt ECP-PVGRAF-HC-BF580-144MT-B

Mono-c-Si

580 W Pmax

53.3 V Voc

13.16 A Isc

46.5 V Vmp

12.48 A Imp

22.49 % eff.

0.8273 FF

72 cells

Download .PAN for PVsyst Open in PV Explorer Compare with a similar module Soiling and off-MPP calculators

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	580.32	W
PTC Power	PTC	551.6	W
Open-circuit voltage	V_oc_ref	53.3	V
Short-circuit current	I_sc_ref	13.16	A
Max-power voltage	V_mp_ref	46.5	V
Max-power current	I_mp_ref	12.48	A
Fill factor	FF	0.8273	—
Efficiency (STC)	η	22.49	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.005527	A/°C
Voc temperature coefficient	beta_oc	-0.136981	V/°C
Pmax temperature coefficient	gamma_r	-0.292	%/°C
NOCT	T_NOCT	43.2	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.88057	V
Light-generated current (ref)	I_L_ref	13.16277	A
Saturation current (ref)	I_o_ref	6.36e-12	A
Series resistance	R_s	0.05596	Ω
Shunt resistance (ref)	R_sh_ref	266.026	Ω
Cells in series	N_s	24	—
CEC Adjust factor	Adjust	-0.3724	%

The CEC list gives 24 cells in series, which puts 2.22 V on each cell. A silicon cell gives 0.55 to 0.80 V, so PV Ivy uses 72 cells in series for the .PAN file and Similar Modules, found from the model name (144 half cells).

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 72 (inferred, CEC lists 24)

Module area 2.58 m²

NOCT 43.2 °C

Temp. coefficient of Pmax -0.292 %/°C

Temp. coefficient of Voc -0.257 %/°C

Temp. coefficient of Isc 0.042 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

Same Test Data

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

ECP-PVGRAF-HC-BF580-144MT-B Main listing, this page
ECP-PVGRAF-HC-BF580-144MT-W

Related Models

All FreeVolt modules →

Similar Modules

Other manufacturers, same technology and cell count, power within 3 %.