How much will I gain in production from the rear side?


Panel: Microquanta 650W bifacial panels
number of panels: 428 facing straight south 
White surface on the roof 

Installation method : Suno Solcellesystemer for bolig og næring - Solceller 

Global radiation - horizontal	787,61	kWh/m²
Deviation from standard spectrum	-7,88	kWh/m²	-1,00 %
Ground Reflection (Albedo)	70,51	kWh/m²	9,04 %
Orientation and inclination of the module surface	111,34	kWh/m²	13,10 %
Module-independent shading	-4,11	kWh/m²	-0,43 %
Reflection on the Module Interface	-46,50	kWh/m²	-4,86 %
Irradiance on the rear side of the module	77,57	kWh/m²	8,52 %
Global Radiation at the Module	988,53	kWh/m²
	988,53	kWh/m²
	x   770,375	m²
	=   761 541,59	kWh
Global PV Radiation	761 541,59	kWh
Bifaciality (80 % of back irradiance)	-11 949,10	kWh	-1,57 %
Soiling	0,00	kWh	0,00 %
STC Conversion (Rated Efficiency of Module 20,96 %)	-592 480,80	kWh	-79,04 %
Rated PV Energy	157 111,69	kWh
Module-specific Partial Shading	-6 186,98	kWh	-3,94 %
Low-light performance	-3 917,31	kWh	-2,60 %
Deviation from the nominal module temperature	-163,21	kWh	-0,11 %
Diodes	-16,82	kWh	-0,01 %
Mismatch (Manufacturer Information)	0,00	kWh	0,00 %
Mismatch (Configuration/Shading)	-144,26	kWh	-0,10 %
PV Energy (DC) without inverter down-regulation	146 683,11	kWh
Failing to reach the DC start output	0,00	kWh	0,00 %
Down-regulation on account of the MPP Voltage Range	-13,76	kWh	-0,01 %
Down-regulation on account of the max. DC Current	0,00	kWh	0,00 %
Down-regulation on account of the max. DC Power	0,00	kWh	0,00 %
Down-regulation on account of the max. AC Power/cos phi	-21,07	kWh	-0,01 %
MPP Matching	-794,35	kWh	-0,54 %
PV energy (DC)	145 853,93	kWh
Energy at the Inverter Input	145 853,93	kWh
Input voltage deviates from rated voltage	-27,95	kWh	-0,02 %
DC/AC Conversion	-5 782,85	kWh	-3,97 %
Standby Consumption (Inverter)	-81,73	kWh	-0,06 %
Total Cable Losses	-4 201,29	kWh	-3,00 %
PV energy (AC) minus standby use	135 760,10	kWh
PV Generator Energy (AC grid)	135 841,84	kWh

Microquanta - MQ-210M-12BB - v2 (1).pdf

Hello hom

thank you for your request.

You did kind of answer this question yourself by posting the simulation results:

The marked column is summed up to the 988.53 kWh per square meter Global Radiation at the Module.

The irradiance on the rear side of the module increases the radiation, reflection decreases it. So there is an 8.5% higher irradiation which can be converted.

Does this answer your question?

Kind regards
Frederik