Key world
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Conversion factors 35
Glossary37
Energy indicators 29
Outlook28
Research, development
and demonstration (RD&D)
Emissions26
Prices24
Energy balances 22
Energy efficiency 21
Consumption16
Transformation12
Supply2
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The International Energy Agency (IEA) was established in 1974 to promote energy
security and provide authoritative analysis on energy for its member countries and
beyond. Energy statistics have always been and remain at the heart of the work of
the IEA. They provide a comprehensive view on energy production, transformation
and final use for all forms of energy as well as the factors that influence energy
choices such as prices and RD&D and the wider impact of energy use on CO2
emissions. Over the years with input from energy statisticians all around the world,
the IEA has gained recognition as the world’s most authoritative source for energy
statistics.
Energy statistics are produced to be used: to monitor changes in energy production
and use; inform debate; and provide a wider understanding of energy, including
helping countries understand their energy transitions. In Key World Energy Statistics
(KWES), we look to highlight some of the key facts and trends from across the vast
number of datasets the IEA produces to enable everyone to know more about energy.
As part of the IEA modernisation programme, KWES now contains more information
on energy efficiency and renewables, more geographic data – including on the “IEA
Family”, created through our “Open Doors” policy – and also more of the fundamental
data required to fully understand energy security – the heart of our work.
Because energy plays such a vital role in our lives today, I hope that these statistics
will not only inform but also help policy makers and others to make wise decisions so
that energy is produced and consumed in a secure, affordable, efficient, and
sustainable manner.
As I like to say, in the world of energy, data always wins. I would therefore like to
thank Duncan Millard, the IEA Chief Statistician, and his excellent team for their work
in ensuring we all have the data needed to gain a comprehensive understanding of
energy.
Dr. Fatih Birol
Executive Director, International Energy Agency
KWES is a summary of the comprehensive data made available by the IEA via its
website: iea/statistics/. It is also available in app form for all major mobile
devices.
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World total primary energy
supply (TPES) by fuel
World TPES from 1971 to 2016 by fuel (Mtoe)
1973 and 2016 fuel shares of TPES
1973 2016
6 101 Mtoe 13 761 Mtoe
1. World includes international aviation and international marine bunkers. 2. In these graphs, peat and oil shale are aggregated with coal.
3. Includes geothermal, solar, wind, tide/wave/ocean, heat and other.
OECD total primary energy
supply by fuel
OECD TPES1 from 1971 to 2017 by fuel (Mtoe)
1973 and 2017 fuel shares of TPES1
1973 2017
3 740 Mtoe 5 303 Mtoe
1. Excludes electricity trade. 2. In these graphs, peat and oil shale are aggregated with coal.
3. Includes geothermal, solar, wind, tide/wave/ocean, heat and other.。