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Apple announced plans to build a $2 billion data command center in Arizona earlier this month. Now, the company says it's also ready to spend another $1.9 billion on two more facilities in Europe. Just as in Arizona, the new centers will run on renewable energy.

Based in Ireland and Denmark, the new data centers will power Apple's online services across Europe. That includes iMessage, Maps and Siri along with the App Store and iTunes Store. That should mean more reliable service across the continent, while also paving the way for future growth.

"This significant new investment represents Apple's biggest project in Europe to date," Apple CEO Tim Cook said. "We're thrilled to be expanding our operations, creating hundreds of local jobs and introducing some of our most advanced green building designs yet."

Beyond running on green energy, both new projects will take the local landscape into consideration. In Ireland, that means planting native trees and offering publicly accessible walking trails and outdoor spaces for nearby schools and residents. Meanwhile, the Denmark facility will be located right next to an electric plant and designed to retain the heat generated by its own servers, even using it to warm local houses. The new data centers should be operational by 2017.