You can set your AC to a temperature where it cycles rather than at a low temperature that it cannot reach in extremely HOT weather. When your AC is cycling it is running as efficiently as it can and when set lower, it will not operate as efficiently.
With your Hot Water Heater, only run it on electric when it is needed and run it on Propane then you are at peak periods.
Eat Cold meals at lunchtime or cook your main dishes early in the morning and just warm them for the meal. Avoid using the Convection function of your Microwave during peak periods.
Do not use Hairdryers, Clothes Irons, Coffee Pots and such high current appliances during peak periods. Or at least do not use them at the same time.