Since chargenet is owned by Genesis Energy, if your home power is with them then you only pay what you pay at home: https://www.genesisenergy.co.nz/for-home/products/electric-vehicles/everywhere

But yeah it's a bit shit since the government owns 51% of Genesis Energy, you'd think they could make it more useful for everyone...

Before I was with Genesis I primarily used Z chargers, as I found them slightly cheaper and less busy, and can get a pie and a v while you charge 😂.

It would be cheaper running a small petrol car rather than an EV using public charging.

That's true, if you don't charge at home at all. Means there's less incentive to get an EV if you live in an apartment with no power points in the carpark. Still some incentive though, as most EVs have performance similar to a less efficient, more powerful petrol car (e.g. my old car was about the same size and slightly faster than my current EV; was a 3l hatchback and got about 10l/100km, and needed 95, which would work out to about 37c/km at the moment).

5.5km/kWh ~20c/km

*18c/km

Interesting that you round up for the EV, but not your ute 😂