Energy efficiency is a way of managing and restraining the growth in energy consumption. Something is more energy efficient if it delivers more services for the same energy input, or the same services for less energy input. For example, when a compact florescent light (CFL) bulb uses less energy (one-third to one-fifth) than an incandescent bulb to produce the same amount of light, the CFL is considered to be more energy efficient.

Around $80 billion wasted on power for online devices in 2013

Simple measures can keep problem of inefficient "network standby" from worsening in years ahead, IEA report says Around $80 billion wasted on power for online devices in 2013

IEA offers a blueprint for a sustainable buildings sector by 2050

Study presents detailed scenarios and technologies for deep cuts in energy use and emissions IEA offers a blueprint for a sustainable buildings sector by 2050

Our focus

The IEA promotes energy efficiency policy and technology in buildings, appliances, transport and industry, as well as end-use applications such as lighting. IEA analysis has led to the development of 25 energy efficiency recommendations which identify best-practice, highlighting the opportunities for energy efficiency improvements and policy approaches in each sector to realise the full potential of energy efficiency for our member countries.

Fast facts

  • USD 300 billiontotalled investment in key energy efficiency markets worldwide in 2011
  • 80 billion USDvalue of electricity wasted in 2013 due to not implementing best available technologies and solutions in network-enabled devices

Energy technology initiatives

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