Tora,
Gas and coal generation were turned off for half of the year. Wind, solar and Nuclear coped without the coal and gas fossil fuels, in 2020. Renewables overtaking fossil fuels over the year for the first time.
https://i0.wp.com/www.intelligentliving.co/wp-content/uploads/2019/01/ukgreenchart.jpg
Twenty years ago, 20 million people turning their kitchen light on during the ad break during Corrie was enough to put pressure on supply.
Now we have low energy lighting, all domestic boilers have been replaced with energy efficient ones, grants for insulation, smart meters and household appliance are now low energy. Consumption has gone down.
https://www.carbonbrief.org/wp-content/uploads/2016/02/uk-primary-energy-use.png
But that is beside the point. Cars, phones, laptop and other devices are all recharged during the night when consumption is low and availability is high.
Scaremongering about having to build more nuclear power stations is not true. Rubbish put about by Jeremy Clarkeson petrolhead fans.