There’s quite a bit of fuckery with the billing. When I take the dollar amount listed as “Total Charges” and divide it by the total kWh listed under “EA Levy” I get $0.27 per kWh. That includes day rate, lines fees, and all the other easy-to-understand charges.
$0.3282/kWh - no daily charge, no off-peak vs peak (same rate)
Checked against with https://billy.govt.nz/, still turns out to be the cheapest. I’m with naumaira.nz.