Andrew Gabriel wrote:

There's actually a large timing range for things like fridges (and
even more, freezers) that can cycle on/off without going outside
temperature spec. They do represent an excellent opportunity to store
energy. For example, if you know you're going to have a mass toilet
flushing and kettle boiling at the end of a royal wedding/funeral,
you could switch on freezers beforehand so they drop an extra 1C,
and then switch them off when the extra load is needed, and they then
won't use any more power for an extended period whilst you get the
toilet flushing and kettle boiling over and done with.
This is getting complicated. What about the thermostat?

Bill