Two miles from where I am writing, the neighbouring village is plastered with posters demanding ‘Say No to Pylons’. The object of loathing is a 112-mile power line from Norwich to Tilbury that would carry wind-generated electricity from the North Sea to a supposed 1.5 million homes. As a concession to the famous landscape of Dedham Vale on the Essex-Suffolk border, the cabling will run underground for 3.3