Enough that we don't need to resort to Soviet style central planning.

Nobody directed the use of oil in the global economy, it happened as technology changed and it became the cheapest, most efficient source of energy.

The same will happen again out the other side. We don't need central planning. My expectation is that if we can keep politicians and political lobby groups like the greenies well away then in around 100 years we will be witnessing a drop in the absolute level of oil demand as some of the present infant technologies (solar/wind/tidal etc.) begin to pay their way, combined with a gradual rise in oil prices (i.e. over multi-decadal periods).

Note that already, we see a relative drop in oil demand - we use less and less for each $/€/Yen of output/income we produce.