Christmas Day was the greenest on record for energy generation, according to the power group Drax. The company said more than 40% of the electricity generated on the day came from renewable sources, the highest ever. It compared with 25% on Christmas Day in 2015, and 12% in 2012. Andy Koss, chief executive of Drax Power, said: “These Christmas figures show that the UK energy system really is changing. Renewables are increasingly vital to the