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Energy Statistics Data Browser
The most extensive selection of IEA statistics with charts and tables on 16 energy topics for over 170 countries and regions
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James Opiyo Wandayi
Ministry of Energy and Petroleum.
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World Energy Investment 2026 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 2026 (WEI 2026) 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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Andrew O'Callaghan
Senior Policy and Programme Evaluator, Sustainable Energy Authority of Ireland (SEAI). Andrew O’Callaghan is a Senior Policy and Programme Evaluator at the Sustainable Energy Authority of Ireland (SEAI). He works on developing evidence and data models to assess the impact of national retrofit and energy efficiency programmes. Andrew has a background in applied psychology and carbon management, and has previously worked in behavioural economics and energy modelling. His work supports the design of more effective and inclusive policies to advance Ireland’s climate and energy goals.
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Nicholas Howarth
Energy Efficiency Policy Analyst.
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Laurence Tubiana
Chief Executive Officer.
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Tomás de Oliveira Bredariol
Energy and Environmental Policy Analyst.
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Delivering Sustainable Fuels Executive summary
Sustainable liquid and gaseous fuels offer multiple benefits Sustainable fuels – including liquid biofuels, biogases, low-emissions hydrogen and hydrogen-based fuels – offer multiple benefits for the energy sector. They complement electrification and energy efficiency in energy transitions, and they are particularly important for sectors that continue to be reliant on fuel-based solutions such as aviation, shipping, and parts of road transport and industry. Sustainable fuels can also enhance energy security, stimulate economic development and strengthen environmental sustainability.Greater use of sustainable fuels can bolster energy security by diversifying fuel supply and reducing fossil-fuel import dependence. Sustainable fuels can…
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Lei Zhang
Founder and CEO.
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Brian Motherway
Head of Energy Efficiency and Inclusive Transitions Office. Brian Motherway is Head of the Office of Energy Efficiency and Inclusive Transitions at the IEA. He leads the Agency’s analytical and outreach programmes on energy efficiency worldwide, including a global programme of capacity building and engagement. He also oversees the Agency’s work on people-centred transitions, focusing on the social dimensions of energy policies, such as skills, social inclusion and energy affordability. Before joining the IEA, Brian was Chief Executive of the Sustainable Energy Authority of Ireland. He holds degrees in sociology and in engineering.
