In 2010 the European Council approved the Europe 2020-strategy with the aim of reducing greenhouse gas emissions by 20% from the 1990 levels, having 20% of energy from renewables, and having 20% increase in energy efficiency by the year 2020.
Source:

Europe 2020 is the EU's growth strategy for the new decade. The Union has set five ambitious objectives - on employment, innovation, education, social inclusion and climate/energy - to be reached by 2020. Each Member State will adopt its own national targets in each of these areas. Concrete actions at EU and national levels will underpin the strategy.