Npower in the red for third year in a row amid customer exodus

Big Six energy supplier npower has reported an annual loss for the third year in a row after losing 155,000 customers amid "fierce competition" between suppliers.The results come as npower lines up a merger with Big Six rival SSE - a merger which may have been complicated by a high-level deal involving Innogy over the weekend.Npower chief executive Paul Coffey said the industry was facing "real challenges" with plans to impose a cap on standard energy tariffs amid public anger over gas and elect