The shale gas revolution and the development of the tight oil and other unconventional oil as well as gas since 2005 have contributed greatly to the rapid increase of the U.S. oil and gas production.The U.S.became the world's largest natural gas producer in 2009 and probably will develop into the biggest oil supplier in the world in less than 20 years.Based on the low cost energy supply caused by the shale gas revolution,petrochemicals and other relevant American manufacturing industries are "coming back" with enhanced competitiveness,which is boosting the U.S.economy and creating more jobs.The shale gas and tight oil revolution also helped the U.S.reduce its dependence on imported energy and make breakthrough toward the goal of energy independence.Although some critical uncertainties lie in oil and natural markets:unstable data on shale gas reserve,as well as the environment protection pressure,the energy revolution originated from technology innovation is sustainable in the U.S.,and is expected to have positive effects on American economic competitiveness and the American power. <<