US energy prices for home heating fuels have surged as a polar vortex has borne down on the country, reviving volatility in markets left dormant after years of mild winters.
Natural gas prices have risen by 4 per cent in the past week and 14 per cent in the past month, with benchmark Henry Hub trading at $3.66 per million British thermal units on Thursday. Contracts surged as high as $4.20/mn btu on Monday.
Heating oil futures have gained 5 per cent in a week, with benchmark New York Harbor contracts trading at about $2.35 per gallon on Thursday.
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