EU trying to solve renewable-energy 'headache' 
21 March 2007
Officials said that the Commission was still unsure about how it will share the burden among member states, after EU leaders agreed earlier in March to have 20% of their overall energy needs covered by renewables by 2020.
http://www.euractiv.com/en/energy/eu-trying-solve-renewable-energy-headache/article-162634