There will be no modelling or business case put forward by the...

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.