In 2013, published results showed that the world's proven natural gas reserves totaled 22 billion cubic meters. Natural gas contributes a quarter of global energy. At the current rate of consumption, only 65 years of energy supply can be provided. 
As a result of the application of new technology, the efficiency of energy use has been improved to a certain extent.
 in order to avoid the dilemma of no natural gas available, more alternative energy sources must be developed.