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.
Single Phase Net Metering¶
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 Export Output.
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