By Dave Sebastian Sempra Energy said it has agreed to sell a noncontrolling 20% stake in Sempra Infrastructure Partners, Sempra's new business unit, to KKR & Co. for $3.37 billion in cash. The transaction values Sempra Infrastructure Partners at about $25.2 billion, including expected asset-related debt at closing of $8.37 billion, Sempra Energy said Monday. The deal is part of a series of transactions laid out in December to simplify Sempra Energy's non-utility infrastructure investments under one self-funding platform, the company said. Sempra Infrastructure Partners will focus on North American LNG export infrastructure, natural gas infrastructure and renewable energy, the company said in December. KKR will be acquiring the indirect stake in the Mexican energy unit IEnova at $4.13 a share, Sempra said.