Solar Net Metering

eMon Energy build-in calculator is particularly useful to measure Grid import and export.

Make sure that the Grid's single Phase CT or three Phase CTs channels are have a check in the "allow negative power values" box.

PLN 1

Single Phase Net Metering

Configure Grid Import Output. Choose the Grid input channel, click on the **function button** key and click on **min button** and then the number 0

PLN 2

Configure Grid Export Output. Choose the Grid input channel, click on the **function button** key and click on max and then the number 0

In this case I choose to "label" Import as a Positive value and Export as a negative value. Some users have turned this around. Does not matter, as long as you are aware of what represents postive and negative

Three Phase Net Metering

Configure Grid Import Output. Choose the Grid L1 input channel, click on the **function button** key and click on **min button** and then the number 0. Do the same for the other Phases.

PLN 4

Configure Grid Export Output.

PLN 5

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  • In some Grids all phases are netted against each other before the export and import are calculated. This is better for Solar system owners. PLN in Indonesia does NOT employ this method.

    The calcumation formula for Phase netted systems is slightly different:

    (L1 + L2 + L3) min 0 for Import

    (L1 + L2 + L3) max 0 for Export