Google plans to invest another 450 million euros ($607 million) over the next few years on a data center in southeastern Finland. Google's new investment is in addition to 350 million euros the company has already spent on the data centre, built on the site of paper company Stora Enso's former mill in Hamina, Finland.

Google bought the mill in 2009, turning it into one of its most efficient data centers by taking advantage of the Bay of Finland's seawater to cool its servers.