[Source:  http://www.worldcoal.org/resources/coal-statistics/coal-matters/]

The International Energy Agency (IEA) estimates that global electricity demand could double between 2009 and 2035 as more people get basic access to electricity around the world and household energy consumption grows in the developing world. During the same period, global steel demand is likely to go up by around 60%, as a result of rapid urbanisation in Asia and the increase in steel consumption by the construction sector.
All scenarios show that with growing energy demand around the world, coal continues to play an important role in the global energy mix through to 2035.