DNG Energy, a losing bidder for State contracts to supply emergency power in South Africa, made fresh corruption allegations against a winning bidder, Karpowership, and a government official. In an October 12 supplementary affidavit to court papers, the first of which were filed in April, South Africa-based DNG alleged that businessmen who are now partnering Turkey’s Karpowership approached the firm’s chief executive officer seeking a bribe. In exchange, they would ensure that DNG won a contract, Aldworth Mbalati, the CEO of DNG, said in the papers, adding that he spurned their offer.