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.

Energy efficiency gains ground despite lower energy prices, new IEA report says

Economies have needed less energy to grow in recent years, especially in China and other developing countries, but more vigorous policies are needed to achieve climate targets More »»

The state of buildings’ energy performance, and what needs to be done

IEA-IPEEC report details the needs and savings from improved energy efficiency More »»

Policy Pathways: Accelerating Energy Efficiency in Small and Medium-sized Enterprises

Meeting multiple policy objectives through accelerating energy efficiency in SMEs More »»

Capturing the Multiple Benefits of Energy Efficiency

IEA report shows the multiple benefits of energy efficiency and calls on governments to invest more resources to harness them More »»

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 policy 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 190 billionThe annual savings to the EU public health sector offered by a high energy efficiency scenario out to 2020
  • USD 80 billionValue of electricity wasted in 2013 due to not implementing best-available technologies and solutions in network-enabled devices