Warren Buffett's Berkshire Hathaway recently agreed to buy most of Dominion Energy's natural gas storage and transmission assets for about $10 billion. Dominion accepted the conglomerate's offer because it agreed to protect its workers, it has the money and expertise to maintain a high level of service, and the valuation of 10 times EBITDA was a "very fair price," the energy giant's bosses told analysts on Wednesday. The deal promises to accelerate Dominion's growth, free up cash, and speed up its shift to state-regulated utilities and clean energy, the executives said. Visit Business Insider's homepage for more stories.