dunno, Moscow to Novosibirsk is around 1,800 miles straight-line distance.
The war would be probably over by the time Ukraine would have developed those capabilities.
Novosibirsk only has cheap cooling in the winter, in the summer months it is hot. Better to go somewhere like Sabetta where they have their LNG harbour.
You will need a cable to that location, that will eat significant share of the costs. Location in southern Siberia near some big hydro may work better, and connecting it will be easier to some existing trans-Siberian line.