By Rabah Arezki
(version in Español)
Natural gas is creating a new reality for economies around the world. Three major developments of the past few years have thrust natural gas into the spotlight: the shale gas revolution in the United States, the reduction in nuclear power supply following the Fukushima disaster in Japan, and geopolitical tensions between Russia and Ukraine.
Over the last decade, the discovery of massive quantities of unconventional gas resources around the world has transformed global energy markets, and reshaped the geography of global energy trade (see map). Consumption of natural gas now accounts for nearly 25 percent of global primary energy consumption. Meanwhile, the share of oil has declined from 50 percent in 1970 to about 30 percent today.