The increased usage of ICT, together with growing energy costs and the need to reduce greenhouse gases emissions call for energy-efficient technologies that decrease the overall energy consumption of ICT. So far, efforts in eco-efficiency have mainly targeted hardware and data center technologies. Less attention has been given to software eco-efficiency. Although it has a direct impact on system’s energy consumption; software usually controls how computing equipment is utilized.
Energy efficiency is at the heart of EU's Europe 2020 Strategy for smart, sustainable and inclusive growth and of the transition to a resource efficient economy. Due to lack of Energy, efficiency is a very cost effective way to enhance security of energy supply, and to reduce emissions of greenhouse gases and other pollutants.