Originally Posted by LarryC
I believe you are overthinking this. Perhaps this model will make more sense.


Sorry, I'm confused...Doesn't make sense, seems really complicated.

This is it:

1) Every KWHr leaving the generation(inverter) meter earns 60cents. 100% of the energy the inverter outputs. That's a given regardless of what the load is doing and whether property is exporting or importing.

2) Every KWHr that leaves the generation meter, but does NOT pass through the bi-directional meter (not exported), and used on site in real-time costs 6cents.

3) Every KWHr that is imported (consumed) costs 20cents.

This is not like net ACCUMULATIVE metering. It is bi-directional. If 10kwhr is exported that day and 10kwhr imported that night, the meter knows 10kwhr exported and 10kwhr imported, and charges for all 10kwhr imported at 20cents. Basically we don't want the energy reaching the bi-directional meter.

Example (24hr time period):
Inverter produces 60kwhr, then 60kwhr is recorded on generation meter.

40kwhr is exported, 30kwhr is imported. 40kwhr export, 30kwhr import is recorded on bi-directional.

Customer is paid $36.00 (60cents x 60kwhr)
Customer is charged $6.00 (20cents x 30kwhr imported) plus $1.20 (6cents x 20kwhr used real-time[60kwhr generated - 40kwhr exported]). Total charged $7.20

Does that help at all??