The European Wind Energy Association indicates that wind energy saw the largest growth in all forms of energy production across Europe in 2008.

From the article -  In 2008, more wind power was installed in the EU than any other electricity generating technology. Statistics released by the European Wind Energy Association (EWEA) today show that 43% of all new electricity generating capacity built in the European Union last year was wind energy, exceeding all other technologies including gas, coal and nuclear power*. A total of 19,651 MW of new power capacity was constructed in the EU last year. Out of this, 8,484 MW (43%) was wind power; 6,932 MW (35%) gas; 2,495 MW (13%) oil; 762 (4%) MW coal and 473 (2%) MW hydro power capacity.