What do the school holidays do to the electricity grid?

Every weekday morning since late July, about a gigawatt has gone missing. The grid noticed before you did.

A few weeks in, parents are well acquainted with the summer holiday routine by now. The 7am scramble is a memory. Nobody is hunting for a PE kit. Breakfast drifts towards mid-morning, the house is still occupied at eleven, and the evening has gone soft at the edges — dinner later, bedtime later, the whole day shifted and loosened.

You know what the holidays have done to your mornings. Here is what they have done to the grid's.