Snowy Hydro expansion could cost $1bn more than Turnbull said, senators told

Company managers tell Senate estimates the $2bn project announced by the PM has not counted a large cost factor

The expansion of the Snowy Hydro Scheme, touted by the prime minister as costing $2bn, will likely blow out to more than $3bn, Senate estimates was told on Tuesday.

The idea of expanding the Snowy Hydro Scheme, adding 2,000MW of capacity and storage, was announced by Malcolm Turnbull in March.