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Or....instead of focusing on resources you can focus on people.  I have two words. Roman Empire. Things deteriorating from within is a more likely scenario than running out of electricity - which is impossible.  Ditto for water.  Electricity might become harder to make and you might have less of it, but you can't actually run out of electricity.  Or water. The whole conservation of mass thing gets in the way, not to mention the water cycle.  Somewhere on Earth, there is a crapload of freshwater.  It might not be where your story takes place, but it doesn't disappear.