According to reports, Berkshire Hathaway (NYSE: BRK-A) (NYSE: BRK-B) is close to finalizing a deal to purchase Texas-based utility Oncor, one of the largest electric utility companies in the United States. This would be an addition to Berkshire Hathaway Energy, which already owns several major utilities across the U.S. Here’s why Berkshire’s leader Warren Buffett likes utilities so much — and why this is a good thing for shareholders.