By Paul Homewood
h/t Joe Public
https://www.gov.uk/government/statistics/total-energy-section-1-energy-trends
And if you look at hour-by-hour data, the peaks are greater still, as the National Grid chart below shows:
https://mip-prd-web.azurewebsites.net/
This graph is for yesterday, Dec 10th. Demand for gas ramps up from around 310 mcm at night to 430 mcm in the early evening. One mcm = approximately 11 GWh.
So a rate of 430 mcm/day equates to 4730 GWh, or 197 GWh per hour.
While supply remains relatively constant, these peaks in demand are met by reducing what is known as the linepack – effectively the amount of gas within the gas distribution network. This, of course, is something that the electricity grid cannot do.
In comparison with the daily peaks and troughs of gas, electricity storage is miniscule. Pumped storage capacity is 2.8 GW, with the biggest, Dinorwig, rated at 1.7 GW with storage of 9.1 GWh. Battery storage…
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Utopia, you are standing in it! 
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