This report explores the dramatic global increase in ownership of networked devices, and probes the hidden costs of rising energy demand to maintain a network connection for these products. The report describes technologies and technical solutions as well as a range of policy options that are available to reduce energy waste. More Data, Less Energy is a joint publication between the International Energy Agency (IEA) and the IEA Implementing Agreement for Energy Efficient End-Use Equipment (IEA 4E).