Reuters: Britain is considering taxing energy firms to help the country’s poorest households cope with soaring gas and electricity bills, but utilities say the vote-winning project will damage investment in clean energy. Public anger has been mounting in recent weeks after five of Britain’s six biggest energy suppliers hiked prices by an average of 15 percent, passing on rising wholesale costs. Each hike was met by a chorus of dissent from websites like www.uswitch.com, that make …