Elliott Management, a key creditor of Energy Future, opposed an earlier offer from Berkshire Hathaway.
That overtakes the $18bn in cash and assumed debt under a Berkshire deal announced July 7.
Buffett is famous for refusing to take part in bidding wars and the Wall Street Journal reported Sunday that Sempra had sweetened its initial bid of $9.3 billion for Oncor.
The announcement signaled that Oncor's parent company has abandoned the $18 billion deal that Berkshire Hathaway, Buffett's multinational conglomerate, unveiled six weeks ago to much fanfare. The company filed for bankruptcy in April 2014, citing $40 billion in debt.
"With its strong management team and long, distinguished history as Texas' leading electric provider, Oncor is an excellent strategic fit for our portfolio of utility and energy infrastructure businesses", said Debra Reed, Sempra chief executive.
Dallas-based Oncor serves nearly 10 million customers and operates more than 170,590 kilometres of distribution lines.
Reed said the acquisition would serve as "a platform for future growth in the Texas energy market and US Gulf Coast region".
Sempra Energy is venturing where other companies have stumbled.
Despite Energy Future's problems, Oncor is considered a good investment by many, including Buffett.
Earlier this year, the PUCT shot down the sale of Oncor to NextEra Energy Inc, because it considered the proposed financial structure too risky for ratepayers. The deal is expected to close in the first half of next year. Allen Nye, now Oncor's general counsel, would be named the utility's CEO, according to a press release.
Oncor services about 10 million customers in Texas and employs about 3,700 people.
Sempra is comfortable with conditions that Berkshire Hathaway has already agreed to, including ringfencing measures to protect Oncor's credit rating and preserve control of its board, that are seen as key to winning the support of Texas regulators, the person said.
Our main goal during the meetings was to explore ways to facilitate the travel of Qatari pilgrims to Saudi Arabia for annual Hajj. Qatari pilgrims started going through the land border on Thursday, according to Saudi-owned al-Arabiya television.
An Origin Story - Start here, at the very beginning, with the never-before-told origin story of Assassin's Creed . The large world of Assassin's Creed Origins has tons of variety in it and is filled with lots of details.
Sports Business Journal was the first to report on the seemingly imminent deal, saying an announcement could come this week. DeMaurice Smith, the executive director of the NFLPA, recently said a work stoppage then is a "virtual certainty".
The United States should instead work with China to find consensus and promote healthy trade relations, the ministry said. Bannon pushed China hawks for positions throughout the federal bureaucracy but did not last long enough to oust Susan A.
As she spoke on Sunday, some of those supporters stood behind her wielding a sign that read: "We stand with Sen". Chappelle-Nadal continued, "God chooses people for different things, to send different messages.
Theatre director Josie Rourke will be making her debut with the film, which is due for release in 2018. Pearce was last seen in Alien: Covenant and will soon appear in The Catcher Was a Spy with Paul Rudd.
Unfortunately, McLaren is keeping the price of this MSO 720S close to the vest, only stating the 720S' base price of $288,845. White Alcantara floor mats, again with white stitching, complete the theme.
Cricket Australia agreed to reschedule the series this year only after Bangladesh promised stepped-up security. The second Test will start in Chittagong on September 4 and the Australians depart Bangladesh on September 9.
The company earlier this year officially launched a new "Wei" brand of potentially US -market ready vehicles. However, the Jeep brand alone could be worth as much as $27bn, according to Morgan Stanley analysts.
Bareilly Ki Barfi Registers Good Growth On Day 2
However, the movie did not get a big opening on August 18, but has witnessed growth on day 2 thanks to positive word of mouth. While Bareilly Ki Barfi had a decent opening at the box office, it is expected to show signs of growth in the coming days.
Anando Brahma movie review: A horrifying comedy about horror
Produced by 70 mm Entertainments, the film also stars Vennela Kishore, Shakalaka Shankar, Srinivas Reddy and Tagubothu Ramesh. " Anando Brahma " is horror comedy which comes with a caption "Bhayaniki navvante bhayam" (Fear is scared of laughter).