The 1750-kilometre project would connect the capital to major centres as part of a high-speed rail link between Melbourne, Canberra, Sydney and Brisbane.

The party will today pledge to use its numbers to force the pace on the design work and corridor acquisition for the project, which would also provide local jobs for Canberrans, ACT Senate candidate Simon Sheikh said.

“Canberra will benefit from manufacturing job opportunities during the construction phases and well into the future,” he said.

“The $20 million feasibility study which the Greens secured as part of their agreement to support the minority Labor Government showed that high speed rail makes economic sense, will lower our transport emissions and will make travel along the east coast quicker and more convenient for Canberrans.”

Greens leader Christine Milne and deputy leader Adam Bandt pushed Julia Gillard's government to complete the scoping work that was released early this year.

Ms Milne and Mr Bandt have submitted the next stages of the project - with a potential cost of $114 billion - to independent analysis by the Parliamentary Budget Office.

That found it would take $664 million allocated over four years for the establishment of a High Speed Rail Authority, which would prepare a detailed financing and investment plan, survey the best rail corridors, and secure ownership of the route.

An environmental impact statement would be undertaken at an initial cost of $570 million.