A draft analysis of the Coalition's national broadband network plan produced for the incoming Abbott government by NBN Co, the company then charged with building Labor's project, has been released by the Labor Party.

The briefing document – which Fairfax Media has been reporting on for a fortnight but which has not been released publicly until now – raises a number of issues with the NBN model the Coalition took to the election.

Shadow communications minister Jason Clare has released a draft NBN Co analysis of the Coalition's NBN.

The briefing was produced by NBN Co for the Department of Communications during the caretaker period immediately before the federal election in September.