MUMBAI, Dec. 18 -- A private company owned by billionaire Gautam Adani and his family has been entrusted to oversee the infrastructure projects of all listed firms of the Adani Group as part of the tycoon's plans to capture margins that would otherwise have gone to external parties.

Adani Infra (India) Ltd, the private company, is also looking to leverage its orderbook of over Rs.50,000 crore to raise over $1 billion via private placement of dollar-denominated bonds, an executive directly aware of the plans said on condition of anonymity as the discussions are private. The funds raised will be forwarded as promoter loans or equity contributions to Adani Group companies for their capex requirements.

The change in the Adani Group's strate...