Significant difference btw 2 methods to calculate net purchased electricity

grasshopper honeybee-legacy
3

… let me reply myself …

I checked the EnergyPlus HTML output file, and it seems there is a Power Conversion in the calculation of net purchased electricity:

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So, the correct workflow for method 2 should be the following:

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now the hourly difference between the two methods is quite small:

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I assume the Power Conversion is related to the inverter efficiency which is specified as 90% here, i.e. only 90% of the electricity generated from PV will be converted to AC electricity going to utility or the grid, and 10% will be lost in the process.

Is this interpretation correct?

net purchased electricity issue _v005.gh (584.8 KB)

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