Solar 3 phase in NZ and “net metering”

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TommySharp

126 posts

Master Geek

ID Verified

#299450 8-Sep-2022 23:47

I know "net billing" has been discussed in the forums before but in this case I'm more interested in "net metering" for 3 phase connections.
I'm trying to confirm if any power companies in NZ do this whereby if I am consuming 2kw on one phase and pumping 1kw into the grid on another phase then +2 -1 means I would get charged for 1kw.

I'm not talking net billing across the whole month just net metering at a specific point in time.

Scott3

3970 posts

Uber Geek

Lifetime subscriber

#2964879 9-Sep-2022 00:09

Short answer is no. (not that I know of anyway)

If you are consuming 2kW on one phase, and exporting 1kW on another phase, you get charged 2 of your consumption rate, and paid for one of your sell rate.

Either look for a power company with a great sell rate (Octopus at 17c is pretty good, less than the night rate on their standard user plans), or move everything to one phase. Family members house had a two phase grind connection, but now one of those phases is sitting unused as they moved all load onto the other phase (where the single phase solar / battery setup is).

rayrayrayray

2 posts

Wannabe Geek

#2989543 29-Oct-2022 17:10

The Czech Republic and NZ are the only countries in the world that don't do the net metering thing.

Goodwe sell a three phase ET series inverter that has an unbalanced output up to a third of its total capacity per phase. For example, a 10kW inverter will give you 3.33kW of output max each phase rather than sending it back to the grid. Just google Goodwe unbalanced load.