Thailand's biggest energy company PTT has said it is interested in bidding on Carrefour's Thai assets.

According to Reuters reports, the power company is looking to buy the operations, worth US$600m as part of plans to diversify its business.

"We are actually interested to see whether there's an opportunity to link to our businesses," CFO Tevin Vongvanich told Reuters.

Carrefour, the world's second largest grocery retailer, is looking to sell its Malaysia, Singapore and Thailand units for a potential price of $1bn to focus on core markets where it holds leading positions.

Casino is also rumoured to be interested in the assets and has appointed Deutsche Bank to advise on a potential bid for the chain, while there have been murmurings that Tesco may also make a bid.