National Grid has just told me that gas demand is up 100 million cubic meters from the seasonal norm - which is equivalent to heating an extra seven million homes.
Usually gas demand at this time of year is 270 million cubic meters, but the actual demand today is 370 million cubic meters.
It has pushed up wholesale prices from a norm of 70p to around £1.
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Expect a bright day today with plenty of winter sunshine and clear blue skies across the country.