Gas prices soar 40% amid 'perfect storm' of pressures

National Grid's liquified natural gas (LNG) plant is seen at the Isle of Grain in southern England August 16, 2013. The Mayor of London's preferred plan for a new airport on the Isle of Grain would require to relocate one of Britain's key gas import facilities at a time the UK relies ever more on overseas supplies. Photograph taken August 16, 2013. REUTERS/Paul Hackett (BRITAIN - Tags: TRANSPORT BUSINESS POLITICS ENERGY ENVIRONMENT)/File Photo