Everyone wants a green data center, also known as a sustainable data center. There are both policy and technology pushes in this emerging space, such as countries that are encouraging voluntary reduction of a data center’s carbon footprint. For instance, Finland will be announcing a lower energy tax for data centers that show a certain degree of greenness. The big advantage of having data centers in colder climates is that not as much power is needed for cooling. If it’s five degrees outside, just open a window.