Berkshire Hathaway, Warren Buffett’s investment vehicle, has bought Dominion Energy’s share in the Cove Point LNG project in Maryland. The stake, which cost Berkshire $3.3 billion, has brought the company’s stake in Cove Point to 75%, with the rest held by Brookfield Infrastructure Partners, Bloomberg reported. Cove Point LNG has an annual capacity of over 5 million tons of liquefied natural gas, most of which has been contracted on a long-term basis with buyers including Tokyo Gas Co. and Sumitomo Corp. The acquisition comes…