From Apple’s press release:
Apple® today announced a €1.7 billion plan to build and operate two data centres in Europe, each powered by 100 percent renewable energy. The facilities, located in County Galway, Ireland, and Denmark’s central Jutland, will power Apple’s online services including the iTunes Store®, App Store℠, iMessage®, Maps and Siri® for customers across Europe.
Not only is it running on 100% renewable energy, but the Danish data center is doing something positive with the extra heat their equipment generates.