[aydyn]

I'm sure there are better examples, but your fridge idea doesn't work. Fridges already operate on the edge of freezing, so if you make it a little cooler you will ruin all your food. Also 3-5pm is peak hangry time.

[Filligree]

A modern fridge also uses approximately five watts, on average. There are far better targets.

[butvacuum]

good thing the grid cares about long term average real power and not instanaenous reactive power then.