Andrew Forrest has launched a fund that is expected to be worth at least $25 billion to help rebuild war-torn Ukraine.
According to the fund's organizers, Mr Forrest and his wife have committed $500 million to the fund.
Primary infrastructure such as energy and telecoms networks will be invested by the Green Growth Initiative.
President Zelensky was happy with the move.
Mr Zelensky said that what the Russians have destroyed can easily be replaced with the latest, most modern green and digital infrastructure.
The fund said it had been working with Larry Fink, the chairman of investment giant BlackRock, and hopes to gain the support of other professional investors.
The plan was discussed with a number of world leaders, including US President Joe Biden, UK Prime Minister Boris Johnson and European Commission President Ursula von der Leyen.
According to Mr Forrest, the president sees that as an opportunity to replace old coal-fired and nuclear power stations with green energy.
He said that the capital would be available immediately after the removal of the Russian forces.
Mr Forrest made a lot of money from the mining boom. He is the founder and executive chairman of the company.
He has turned his attention to sustainable technology in recent years and is now a major producer of green hydrogen.
Parts of the country's infrastructure have been damaged by the Russian invasion.
Russian missile attacks have targetedUkraine's energy network.
Denys Shmyhal said in July that it would cost $750 billion to recover from the war.
Russia rejected calls from the international community to pay for the war damage it has caused.
The UN General Assembly passed a resolution saying Russia should be held responsible for its actions.
The General Assembly does not have the power to enforce compliance.
The Kremlin said it would try to stop the West from taking its reserves.