Guardian: The government’s climate watchdog today urged the coalition to focus on hitting the UK’s renewable energy targets rather than raising them higher. In a letter to energy secretary Chris Huhne, the Committee on Climate Change said a “step change” was needed for the UK to hit its legally binding EU target of producing 15% of energy from renewable sources by 2020. Currently the UK sources just 3% of its energy for electricity, heating and transport from renewable sources such as wind …