Whatís that you say? Gas is running out? Have you not heard the news? Itís not. Till five years ago gas was the fuel everybody thought would run out first, before oil and coal. America was getting so worried even Alan Greenspan told it to start building gas import terminals, which it did. They are now being mothballed, or turned into export terminals.
A chap called George Mitchell turned the gas industry on its head. Using just the right combination of horizontal drilling and hydraulic fracturing (fracking) Ė both well established technologies -- he worked out how to get gas out of shale where most of it is, rather than just out of (conventional) porous rocks, where it sometimes pools. The Barnett shale in Texas, where Mitchell worked, turned into one of the biggest gas reserves in America. Then the Haynesville shale in Louisiana dwarfed it. The Marcellus shale mainly in Pennsylvania then trumped that with a barely believable 500 trillion cubic feet of gas, as big as any oil field ever found, on the doorstep of the biggest market in the world.
The impact of shale gas in America is already huge. Gas prices have decoupled from oil prices and are half what they are in Europe. Chemical companies, which use gas as a feedstock, are rushing back from the Persian Gulf to the Gulf of Mexico. Cities are converting their bus fleets to gas. Coal projects are being shelved; nuclear ones abandoned.