The AFL will kick in money to help redevelop Adelaide Oval, which Port Adelaide considers their financial saviour.

The South Australian government has committed $535 million to the plan to transform the oval into a 50,000 capacity multi-purpose stadium.

Both of SA's AFL clubs will move games to the revamped oval, likely from 2014, in a switch set to reap the clubs millions of dollars.

While the AFL has yet to outline any financial stake in the project, chief executive Andrew Demetriou said on Tuesday the league would put money into the stadium.

The $535m cost had already risen from the original $450m quoted by the government last year, with some saying $600-700m was a more realistic estimate.

"We have given a commitment to the South Australian government that we will do what we always do as a code and that is inject capital into infrastructure," Demetriou told reporters in Melbourne on Tuesday.

"Our record on that is second to none - we have put money into the MCG, we put money into AAMI Stadium, we've put money into Subiaco, we're putting money into Carrara and the Sydney Showgrounds for GWS.

"We have already said that we will put a financial contribution into the stadium."

Financially-troubled Port Adelaide were desperate to move to Adelaide Oval, believing they could be as much as $3.5m a year better off.

Port president Brett Duncanson said research showed their membership could rise by 70 per cent and crowds increase 30 per cent from the shift from their current home ground, AAMI Stadium.

"Port Adelaide have got some significant financial challenges ahead of them," Demetriou said.

"This certainly provides them with a great fillip.

"The upside in revenue terms for both clubs is significant.

"For Port Adelaide it gives them some comfort to plan going forward now.

"And for the Adelaide Crows it's a significant decision for them too because they have invested in AAMI Stadium at West Lakes with a $20m development for their training and administration.

"But there's significant upside for them out of this particular arrangement too because if they want to compete at the higher end of a very, very difficult competition they need this redevelopment."

Demetriou was now awaiting a Western Australian government decision about a proposed new stadium in Perth.

"We're looking forward to what that announcement may be in June," he said.

"Again, we'll be there to help if we can and help get the best football outcome for the state and of course for our clubs and the West Australian Football Commission.

"And if this can be achieved, we can honestly say we've got football being played in every state and territory in first-class stadia."

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