Money Warren Buffett’s Berkshire Hathaway adds to energy portfolio, buys Dominion Energy gas lines in $9.7B deal July 5, 2020 Dalvin Brown, USA TODAY Comments Off on Warren Buffett’s Berkshire Hathaway adds to energy portfolio, buys Dominion Energy gas lines in $9.7B deal Dominion has more than 7 million energy customers across 20 states in the U.S. Berkshire Hathaway provides service to 12 million worldwide customers.