Have always wondered too, and found this in the T&C,https://www.agl.com.au/terms-conditions/peak-energy-rewards 4.6 Each Peak Event may last 1 to 3 hours and take place on weekdays between 10am and 10pm in the local time in your State or Territory on the day of the Peak Event. We may run Peak Events on consecutive days. Depending on the location of your Supply Address, you may be offered other opportunities to opt-in to participate in Peak Events and obtain AGL Credits specific to your location ...