According to a report by energy regulator Ofgem, Britain is at risk of running out of energy capacity in the winter of 2015-16, falling from 14% (now) to just 4%, the BBC has reported. Should this happen, the regulator said, Britain would rely more on imported gas - which would likely lead to an increase in prices. The news comes three years after Ofgem's Project Discovery report, which stated that shortages in electricity could lead to steep rises in energy bills. It now warns that the highest risk of shortages would be sooner than anticipated because coal-fired power stations would be shut down sooner than originally thought in 2009. Ofgem Chief Executive, Alistair Buchanan, states that Britain still faces challenges: "The unprecedented challenges in facing Britain's energy industry... to attract the investment to deliver secure, sustainable and affordable energy supplies for consumers, still remain."