As part of this effort, our main European data centres, in St. Ghislain, Belgium, Hamina, Finland, and Dublin, Ireland recently were added to our ISO 50001 certification. Much like the environmental and workforce safety management certifications, ISO 50001 ensures we have a strong energy policy, build a robust auditing program, continually monitor, assess, and respond to our energy efficiency results.
|Google Data Centere in Finland|
Another green priority for us is energy. Over the past year, we have signed two major contracts to buy all the electricity generated by Swedish wind farms for 10 years. By entering into long-term agreements with wind farm developers over the past few years, we’ve been able to increase the amount of renewable energy we consume while helping enable the construction of new facilities. Once completed, the wind farms will provide Google’s Hamina, Finland, data center with additional renewable energy as the facility expands in coming years.
Overall, we're focused on reducing our energy use while serving the explosive growth of the Internet. Most data centers use just as much non-computing or “overhead” energy (like cooling and power conversion) as they do to power their servers. At Google we’ve reduced this overhead to only 12%. That way, most of the energy we use powers the machines directly serving Google searches and products. We will continually push toward doing more with less—serving more users while consuming less energy.