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.
More top news
Mr Farron's bizarre comment was made to an activist who came to watch the party leader speak in Cambridge on Thursday.
The US actor starred in Disney's 2004 film Miracle, chronicling the US men's hockey team at the 1980 Winter Olympics.
ITV News Economics Editor Noreena Hertz said an economic slowdown looms as a fall in retail spending led to gloomy figures.