With the recent confirmation of RUC exemption for heavy EVs until July 2027 our calculations show the Deepway as the cheapest semi tractor to operate in New Zealand, even after paying for your depot charger.
The Deepway $1.25/km (lease, service, energy, no RUC, + depot charger)
The Windrose $1.50/km (lease, service, energy, no RUC, + depot charger)
Euro 6 diesel $2.06/km (lease, service, energy, and RUC)
H2 FCEV $2.70/km (lease, service, energy, no RUC)
H2 dual fuel $3.30/km (lease, service, energy, and RUC)
The National Road Carriers and EECA calculator shows an even larger gap on an Auckland to Tauranga run with a truck similar to the Deepway at $2.78 and diesel truck at $3.99/km (they include some other costs)
Their news release is here:
https://natroad.co.nz/giving-freight-operators-the-numbers-they-need-nrc-and-eeca-upgrade-trusted-cost-model/?cb=1754100765404