US Northeast oil-fired electric generation has accounted for about 2.8% of total generation in 2014, up from less than 1% during the same time last year, according to data from regional grid operator ISO New England.
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ISO New England, which handles electric markets for Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont, showed generation from oil-fired units has averaged 9.893 GWh/day in 2014 through February 23, according to data released Wednesday.
That compares with about 3.022 GWh/day, or 0.94%, during the same 54-day period last year.
ISO New England's oil-fired generation has been particularly high this winter because of several cold snaps and also a winter reliability program initiated by the grid operator that provided a number of incentives for oil use in power generation.
The data for oil-fired generation only considers power plants that burn exclusively petroleum products. Dual-fuel units that can burn natural gas or oil products are included in the natural gas category, even if a facility might have burned oil on a particular day.
The other two main grid operators in the US Northeast -- PJM Interconnection and NYISO -- do not release up-to-date generation mix breakdowns.