Petrobangla

Sample design

Karwan Bazar, Dhaka · RCC roof

Solar capacity

50.8kWp

Annual generation

64.5MWh

Estimated cost

BDT 3.00M

Payback

4.0years

Panel: 80 × Trina Solar 635 Wp
Inverter: 1 × Sofar 50 kW
AC capacity: 50 kW (DC/AC 1.02)
Strings: 4 strings of 20
Tilt: 14.0°
Roof: 30 × 20 m (assumed)

String open-circuit voltage 1029.1 V at 5 °C stays under the 1100 V limit.
MPPT voltage compatible: 817 V inside 180-1000 V.
MPPT current within limits: 31.1 A of 40 A.
DC/AC ratio 1.02 within the recommended 1.0-1.35 range.
DC input 50.8 kWp per inverter is within the 75 kW limit.

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An illustrative design calculated by Solaxify at this project's capacity. The building size is assumed and prices are sample budget figures, so this is not the installed system.