Short answer no, will it be cheaper with nukes in the mix, no. In the interim Duds wants to use gas, will that make it cheaper, another resounding no.
Here in Tassie the AER's final decision on the distribution and transmission determination that will apply to TasNetworks for the 2024–29 period spells price rises going forward, imo i doubt the generators will be left behind also. We were lucky this round with only a .5% rise in usage charges.
I'm all for nuclear in the mix if it stacks up(still waiting for the grown up convo from Duds)