My bill splits my energy usage into peak, off-peak and shoulder. So I kinda assumed that it did matter? There are different charges for me under each section. So the rate for off peak is 7.4c, shoulder is 12.8c and peak is 32.4c.
The bill provides a breakdown of the amount of energy I used in each time slot over the period too. Given that the amount for peak is more than double off-peak, I'm pleased I figured out when to stop running some of my appliances!
