British cities should generate their own energy rather than expecting the countryside to bear the responsibility, the National Trust has said. Patrick Begg, the Trust’s rural enterprise director, also called for the National Grid to be overhauled, tailoring energy supply to meet demand at different times of the day. Britain should look to the example set by Freiburg in Germany, one of the world’s greenest cities, he said. Residents of Freiburg have eco-friendly homes and minimise car use. The football stadium is solar-powered, hydro-power is generated locally or imported, and areas of the old city centre have been pedestrianized with miles of cycle lanes created.