Total Radiation Analysis Problem

So I created this shape optimization definition for minimum solar heat gain, but apparently when i tried running the analysis, the total radiation shown is too little to be true? (Only 11.92 kWh/year?) and i tried to check it with the sum of radiation result and then multiply it by the total area of geometry, and it showed me a really big result, unlike the total radiation… is there something wrong with my definition that caused the total radiation so small? Thank you very much!

What you get for each sensor is the value for each sensor (not the total area of the face). To get the total value you should multiply the value for each sensor with the area of the face that they represent. Then add them up all together. Basically you need to change the order of the components. Multiply the values with area first and then add them up.