As much as I think it is required to increase everyone's awareness about energy economies that can and should be done in our daily lives (I'm no angel on that part, far from it), the chosen way demonstrates the worst possible example.
Lowering the energy required a lot for a short time only creates a stressful event on the energy distribution network. What mainly happens on such an event:
- Energy demand decreases a lot. The energy distribution network should be able to adapt to that and will probably stop using a few plants and only keep distributing energy from the other plants that keep running.
- One hour later, everyone is going to put everything on again, creating a high demand peak on a weakened network. All the plants that were stopped will be started again (the cost of this is higher than keeping them running for the hour when we shut everything
down), plus maybe a few others.
The global result is that we consumed more energy than if we did nothing. The other solution is that the people who manage that energy distribution network are aware of the situation and will just keep overproducing for 1 hour to avoid the cost of stopping
and restarting plants.
Doing it 1 day for 1 hour does not help (except for global awareness), it does just the opposite ;-)