Guardian: Forty-two million energy-saving lightbulbs were sent out by utilities companies in the three months before Christmas under the government’s £3bn energy-efficiency scheme, even though many are unlikely to be used. Since the scheme began less than two years ago, 224m bulbs have been distributed – almost 10 for each household. According to a survey by the Energy Saving Trust last year, the average home had six unused bulbs lying in drawers. When the government introduced the …