Coal Gasification: Clean Energy for the Future lweb.es/f922 5.24.16
OEF REVIEW:Coal is cheap but the challenge is how to harness coal as clean energy. The main technology being used is coal gasification where the coal is chemically transformed into synthetic natural gas, but its overall carbon intensity is worse than coal mining. Other methods are the coal-bed methane process and underground coal gasification. Underground coal gasification is now a feasible way of accessing the vast resources of coal that are too deep to mine, thus potentially increasing world clean energy supply.