Adelaide Convention Centre is to be expanded and redeveloped at a cost of $350 million, reportedly boosting its economic and tourism contribution to the state by more than $1.92 billion over the next 25 years.

The redevelopment, to be delivered in two stages, will be undertaken by a multi-disciplinary consortium including Woods Bagot, Baulderstone, Aurecon, Bestec, Rider Levett Bucknall and Thinc Projects.

The first stage expanding the existing facility westwards over the railway lines to link with Morphett Street bridge will start in September this year for completion in time to host the World Aquaculture Conference in May, 2014.

Stage two of the redevelopment, replacing the existing plenary building (home of the original Centre in 1987) is a multi-purpose, state-of-the-art facility with plenary capacity of up to 3,500 seats, is scheduled for completion in June, 2017.

The centre offers sustainable meeting events packages and carbon emission offset options for organisers and delegates.