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PV Rated PV Energy to PV Generator Energy (AC grid)


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Posted

Hi,

So from the images below you can see that on the report I have a Spec. Annual Yield of 1116.18 kWh/kWp. (521,192/1116.8= 466.76kWp) 

Does this Spec Annual Yield take into account the performance ratio as 95.85%? So if the PR was 100% would the Spec Annual Yield would be close to 1164.5?

 

 

image.png.0ae4490293352d72f36f6e62c12c4b40.png

But on the PV System Energy Balance I have different to figures as below:

image.png.c560fbea3ebf7aed4ef613ab0336a9a6.png

 

Best regards

 

Carl

 

Posted

Hello CarlSEL

the project file which you did send to me is a different one than which the screenshots are from:

image.png

The specific annual yield is calculated with PV energy (AC) minus standby use and the installed peak generator output power.

On 8/10/2023 at 2:00 PM, CarlSEL said:

Does this Spec Annual Yield take into account the performance ratio as 95.85%?

It is the other way around, you could say the performance ratio is determined by the real yield in comparison to the maximum possible yield and counts as a quality mark. Above 85% seems very high, though. I guess your module data could contain wrong values. Some manufacturers tend to enter very high values for IAM. Please double check that.

On 8/10/2023 at 2:00 PM, CarlSEL said:

So if the PR was 100% would the Spec Annual Yield would be close to 1164.5?

This is not possible, since every system has got losses.

Kind regards
Frederik

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