Portugal with the highest CO2 reduction in the EU in 2010

According to a lot of portuguese newspapers (including Jornal de Negócios) Portugal reduced its CO2 emissions in 2010 14.5%. This reductions is is the highest in the EU, followed by Spain with 11.3%.
In fact, the average for the European Union is CO2 emissions increase of about 3%.
What is lacking from these news is to explain if this is due to energy efficiency increases, renewables, or if this is a sign of the economic crisis and the slowdown of the portuguese economy.
According to Connie Hedegaard, "The average CO2 emissions increase shows the economic recovery in the EU".