SEG Solar Inc. SEG-515-BTD-BG

Mono-c-Si Bifacial

515 W Pmax

40.7 V Voc

16.07 A Isc

33.9 V Vmp

15.2 A Imp

23.86 % eff.

0.7878 FF

54 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	515.28	W
PTC Power	PTC	490.6	W
Open-circuit voltage	V_oc_ref	40.7	V
Short-circuit current	I_sc_ref	16.07	A
Max-power voltage	V_mp_ref	33.9	V
Max-power current	I_mp_ref	15.2	A
Fill factor	FF	0.7878	—
Efficiency (STC)	η	23.86	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.008838	A/°C
Voc temperature coefficient	beta_oc	-0.096581	V/°C
Pmax temperature coefficient	gamma_r	-0.2901	%/°C
NOCT	T_NOCT	43.2	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.41773	V
Light-generated current (ref)	I_L_ref	16.08424	A
Saturation current (ref)	I_o_ref	5.4e-12	A
Series resistance	R_s	0.15289	Ω
Shunt resistance (ref)	R_sh_ref	172.494	Ω
Cells in series	N_s	18	—
CEC Adjust factor	Adjust	4.575	%

The CEC list gives 18 cells in series, which puts 2.26 V on each cell. A silicon cell gives 0.55 to 0.80 V, so PV Ivy uses 54 cells in series for the .PAN file and Similar Modules, found from the CEC count times 3 (it counts one bypass substring).

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Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 54 (inferred, CEC lists 18)

Module area 2.16 m²

NOCT 43.2 °C

Temp. coefficient of Pmax -0.290 %/°C

Temp. coefficient of Voc -0.237 %/°C

Temp. coefficient of Isc 0.055 %/°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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