April 16, 2012. EU member states must have a credible carbon price, a new set of policy goals and could need clearer funding guidance or the growth of renewable energy will falter, Energy Commissioner Guenther Oettinger said. The European Union is officially on track to meet a goal for 20 percent of its energy to come from renewable sources by 2020. After that, there is no policy certainty and "abrupt changes" for instance to solar subsidies are destroying confidence among investors, the commissioner said. At the same time, the EU's Emissions Trading Scheme (ETS), meant to encourage low carbon energy has crashed to record lows, far below the level needed to be a green incentive. In times of crisis, some member states were unfairly blaming renewable spending for adding to economic problems. Oettinger was addressing the annual conference of the European Wind Energy Association in Copenhagen.