Electricity prices in Boston , which reached record premiums to New York costs last month, are poised to remain at all-time highs through March because of bottlenecks on natural-gas pipelines. New England’s reliance on the fuel for power generation has grown to 52 percent from about 30 percent in 2001, though there have been no new pipelines transporting gas to the six-state region in 40 years. In New York, lines from wells in the Marcellus shale deposits of Pennsylvania and West Virginia boosted deliveries by more than 1 billion cubic feet a day this winter, enough to heat about 3 million homes. Wholesale power in Boston is trading at the highest January premium to New York since at least 2005, according to grid data compiled by Bloomberg. Prices in New York recovered faster from a blast of arctic cold last week because of the increased gas supplies. The power […]