Guardian: With an electricity meter that goes backwards and a roof covered in green plants, Tony’s Almond’s house is no normal home. The house in Welwyn village, just north of London, is actually a green “superhome” – the 50th in a UK-wide network of demonstration eco-homes now open to the public. The scheme, operated by charity Sustainable Energy Academy (SEA) and the National Energy Foundation, plans to create a network of 200 superhomes to showcase energy efficiency and renewable energy …