Key World Energy Statistics

Key statistics on the supply, transformation and consumption of all major energy sources

Key World Energy Statistics (KWES) is the IEA's introduction to energy data and statistics, including energy indicators, energy balances, prices, RDD budgets, CO2 emissions and forecasts. Explore the highlights below or download KWES as a PDF.


Measuring energy efficiency

Energy efficiency indicators are a means of showing how much energy is used for a given purpose, such as heating a home or a certain size, or moving passengers or freight a given distance. For businesses, energy use is often compared against a measure of the economy such as GDP or employment.

Read the highlights below, or explore further in IEA's Energy Efficiency Indicators.


Largest end-uses of energy by sector in IEA countries, 2015

Notes: IEA countries refers to the 19 IEA countries for which data are available for most end-uses: Australia, Austria, Canada, Czech Republic, Finland, France, Germany, Greece, Ireland, Italy, Japan, Korea, New Zealand, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom and the United States; other industries include agriculture, mining and construction; passenger cars include cars, sport utility vehicles and personal trucks.

Drivers of final energy consumption in IEA countries, EJ

Notes: IEA countries refers to the 19 IEA countries for which data are available for most end-uses: Australia, Austria, Canada, Czech Republic, Finland, France, Germany, Greece, Ireland, Italy, Japan, Korea, New Zealand, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom and the United States.

Services and manufacturing in IEA countries: energy per value added, MJ/2010 USD PPP

	2000	2015
Services	0.769356993	0.636683479
Manufacturing	8.943521895	6.218875988
of which...		
Basic metals	28.70253174	25.06591158
Non-metallic minerals	19.90205624	17.13514731
Paper and printing	18.82589411	16.7627144
Chemical and petrochemical	13.12541839	8.434820917
Machinery	1.906599946	1.137948702
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"plotOptions":{"bar":{"borderWidth":0}},
"tooltip":{"valueSuffix":" MJ/2010 USD PPP","valueDecimals":1}
}
Notes: IEA countries to the 19 IEA countries for which data are available for most end-uses: Australia, Austria, Canada, Czech Republic, Finland, France, Germany, Greece, Ireland, Italy, Japan, Korea, New Zealand, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom and the United States

Residential in IEA countries: energy per floor area, GJ/m2

	2000	2015
Space Heating	0.342377556	0.261580412
Space Cooling	0.017470966	0.02089117
Lighting	0.024556576	0.015942699
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"plotOptions":{"column":{"borderWidth":0}},
"tooltip":{"valueDecimals":2,"valueSuffix":" GJ/m2"}
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Notes: IEA countries refers to the 19 IEA countries for which data are available for most end-uses: Australia, Austria, Canada, Czech Republic, Finland, France, Germany, Greece, Ireland, Italy, Japan, Korea, New Zealand, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom and the United States.

Passenger transport in IEA countries: energy per passenger-kilometer, MJ/pkm

	2000	2015
Passenger cars	2.117885196	2.154943387
Buses	0.609104755	0.621512658
Passenger Trains	0.32802844	0.251952295
Total	1.928437619	1.918175765
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"plotOptions":{"column":{"borderWidth":0}},
"tooltip":{"valueDecimals":2,"valueSuffix":" MJ/pkm"}
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Notes: IEA countries refers to the 19 IEA countries for which data are available for most end-uses: Australia, Austria, Canada, Czech Republic, Finland, France, Germany, Greece, Ireland, Italy, Japan, Korea, New Zealand, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom and the United States; passenger cars include cars, sport utility vehicles and personal trucks.