Diesel futures jumped the most in more than a year as cold weather in the Northeast boosted demand while refinery outages reduced supplies. The March contract rose as much as 7.2 percent as Delta Air Lines Inc. shut units at its Trainer refinery in Pennsylvania and Philadelphia Energy Solutions had an upset at its complex, the largest on the East Coast. Natural gas pipelines in the eastern U.S. have limited flows across their systems as cold weather spreads through the region. “This is a result of the natural gas curtailments that continue through the region,” said Andy Lipow, president of Lipow Oil Associates LLC in Houson. “Compounding the problem is the fact that the Delta Trainer refinery shut down units.” Diesel for March delivery rose 9.47 cents, or 4.7 percent, to $2.0885 a gallon at 10:51 a.m. on the New York Mercantile Exchange. The front-month contract’s premium […]