Sempra Energy said that it will buy Oncor for $9.45 billion in cash after Energy Future Holdings Corp, which indirectly owns Oncor, abandoned a deal to sell the power transmission company to Warren Buffett's Berkshire Hathaway Inc., Reuters reported today. San Diego-based Sempra expects to own about 60 percent of a reorganized Energy Future after the transaction that is valued at $18.8 billion, including Dallas-based Oncor's debt, it said late on Sunday. In July, the energy unit of Berkshire Hathaway agreed to buy Oncor for $9 billion, but the deal ran into trouble after Energy Future's biggest creditor Elliott Management Corp opposed the sale arguing it undervalued Oncor. Elliott also tried to put together its own bid for $9.3 billion to buy Oncor. Separately, Berkshire said last week that it would not be raising its offer for Oncor, which delivers power to more than 3.4 million homes and businesses.