French nuclear giant scraps SMR plans due to soaring costs, will start over, page-116

There will be no modelling or business case put forward by the LNP for nuclear, simply because it would either be

a) completely ridiculed for it's assumptions & omissions
b) show that nuclear will produce by far the most expensive electricity in Australia.

To put out modelling or a business case now would be political suicide, which is exactly why they are saying nothing will be released prior to the election.