I don't think such strong micro-management coercion will be welcome or (I hope) necessary.

But I agree that some sort of pricing or other signals, and possibly rationing, eg kWh/household/month, are needed to make people focus on the difference between "need" and "want", regardless of their personal wealth.

I'm reading Jared Diamond's "Collapse" at the moment, and it's sobering reading.  We've been here before and you don't have to be a greenie hairshirt fundamentalist to see some real dangers.

Rgds