Jan 16 Australian energy firm DUET Group on Monday said its board would recommend a takeover offer from a consortium led by Hong Kong’s Cheung Kong Infrastructure Holdings after the price was increased slightly to value the company at A$7.37 billion . DUET shareholders will receive A$3.03 a share, up A$0.03 from the offer CKI made in December, the takeover target said in a statement, recommending the proposal in the absence of a higher offer.