TXU Corp. , renamed Energy Future Holdings, was bought for $43.3 billion by KKR and TPG in 2007. The private equity buyers valued the Texas-based utility company at $43.3 billion when counting the debt that came with it and paid $69.25 a share, 15% above the stock at the time the deal was announced. Because Texas's biggest electricity company was being sold to private investors after years as a public utility, buyers at the time said they would likely hold their investment for at least 5 years. KKR and TPG added $24.5 billion in new debt to finance the buyout. After the recession hit, markets froze and energy prices fell. In 2008, the company had a pretax loss of almost $10.5 billion and paid almost $5 billion in interest on its debt stock of roughly $40 billion. The company has not yet registered an initial public offering filing.