Facebook's energy efficiency plans

Free and open for everyone to see. Impressive!
As a result of the Open Compute Project, Facebook's Oregon data center is now one of the most efficient in the world:

Facebook’s energy consumption per unit of computing power has declined by 38%.

The new data center has a PUE of 1.073, well below the EPA-defined state-of-the-art industry average of 1.51. This means 93% of the energy from the grid makes it into every Open Compute server.

We've removed centralized chillers, eliminated traditional inline UPS systems and removed a 480V to 208V transformation.

Ethernet-powered LED lighting and passive cooling infrastructure reduce energy spent on running the facility.