<Dd> Provides energy for electrolysis of water . Would require 2,500 kWh of sun per square meter, 113 million 40 - kilowatt systems, which would cost $22 trillion, or about $9.50 per GGE . </Dd> <Dd> Provides energy for electrolysis of water . At 7 meters per second average wind speed, it would require 1 million 2 - MW wind turbines, which would cost $3 trillion, or about $3.00 per GGE . </Dd> <Dd> Gasification plants would produce gas with steam reformation . 1.5 billion tons of dry biomass, 3,300 plants which would require 113.4 million acres (460,000 km2) of farm to produce the biomass . $565 billion in cost, or about $1.90 per GGE </Dd> <Dd> FutureGen plants use coal gasification then steam reformation . Requires 1 billion tons of coal or about 1,000 275 - megawatt plants with a cost of about $500 billion, or about $1 per GGE . </Dd>

How much does it cost to create hydrogen