If you use "Octopus Agile" (which "directly follows half-hourly wholesale electricity prices") then on Friday 22nd in Southern Scotland [1] you could have enjoyed electricity prices ranging from 14.9p/kWh at 02:30 to 46.4p at 16:30 and an average rate of 24.8p

On a handful of days - such as yesterday [2] which was very windy - prices fell as low as -2.6p at 03:30

For comparison, a 'regular' energy supplier will charge 23.47p/kWh for anytime use.

[1] https://agilebuddy.uk/historic/agile/2024/11/22 [2] https://agilebuddy.uk/historic/agile/2024/11/24