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About page
Oil security and emergency response
Ensuring quick and effective response to major supply disruptions Ensuring energy security has been at the centre of the IEA’s mission since its creation in 1974, following the oil crisis in 1973. Today, the global oil market remains vulnerable to a wide range of risk factors, including natural disasters, major technical accidents, and geo-political tensions. As oil is expected to remain a major component of global energy demand for the coming decades, particularly for the transportation sector,...
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Flagship report
Jun 2025
World Energy Investment 2025 How we track investment in energy
Tracking energy investment The way investment is measured across the energy spectrum varies, largely because of differences in the availability of data and the nature of expenditures. This document highlights the methodology used to ensure that the estimates are consistent and comparable across sectors in the World Energy Investment 2025 (WEI 2025) report and other publications from the International Energy Agency.The IEA measures investment as the ongoing capital spending on assets. For some sectors, such as power generation, this investment is spread out evenly from the year in which a new plant or upgrade of an existing one takes…
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Policy report
Jun 2026
Multiple Benefits of Energy Efficiency for Business Operational benefits
For every dollar in energy cost savings, productivity gains can deliver up to an extra 30 cents of value Energy efficiency measures can improve how firms use labour, equipment and materials, leading to gains that go beyond reduced energy use. These improvements are often driven by more efficient, precise and optimised processes. By reducing losses – such as excess heat, inefficient combustion or friction – equipment operates more smoothly and reliably. Electrified processes can further enhance efficiency by reducing the number of moving parts and points of failure.This improved performance leads directly to higher productivity. More efficient production lines enable better…
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