I see the report from EY has been released.
http://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=11323251
The very interesting part of the article for me was this
At least a year since being commissioned, the EY report published today builds the case for a project that WIAL's 66 percent owner Infratil would seek to have substantially funded by local and central government.
The owners want local and central government funding yet are quite happy to make extortionate profits on the back of taxpayer and ratepayer funding. It's a great business model if you can make it work.
This is a classic example of why some infrastructure shouldn't be privatised.