In order for me to start doing something differently I must first be aware of what I am doing.
Hence I think there needs to be a campaign that starts by explaining what is energy consumption (yes that basic) to make people aware of what consumes energy . For example, leaving a charger in the wall when not using it etc…
Once you made people aware of their own behavior you can start giving them tips on how to change it.
It’s baby steps and helping them understand that will truly make the difference. Putting the information on a microlevel let’s people understand it on a personal level and feel personally involved rather than it being viewed as a national problem.