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.


Spending on RD&D

Energy RD&D covers research, development and demonstration related to the production, storage, transportation, distribution and rational use of all forms of energy. This includes: basic research when it is clearly oriented towards the development of energy-related technologies,applied research,experimental development, and demonstration.

Read the highlights below, or explore further in IEA's Energy Technology RD&D Budget Database.


IEA total public energy technology RD&D budget

	Budget
1975	13.1354
1976	13.9128
1977	16.768
1978	18.9803
1979	20.8858
1980	21.8826
1981	20.9144
1982	19.0591
1983	17.9994
1984	17.6423
1985	17.1297
1986	15.4766
1987	13.4151
1988	12.8637
1989	12.8776
1990	12.8131
1991	12.7387
1992	11.414
1993	10.9949
1994	11.2744
1995	11.1655
1996	10.7661
1997	10.2573
1998	10.2935
1999	10.6014
2000	10.6088
2001	11.1905
2002	12.545
2003	12.06
2004	12.1747
2005	12.7143
2006	13.1554
2007	14.4068
2008	14.9797
2009	22.5302
2010	17.8248
2011	19.6208
2012	19.6615
2013	18.2471
2014	18.1472
2015	17.2356
2016	16.8238
2017	17.995
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Notes: data refer to total public energy RD&D expenditures, converted from current prices in national currencies. All IEA member countries are included, based on available or estimated data. The 2009 peak is mainly the result of the American Recovery and Reinvestment Act (stimulus) spending.

IEA total public energy RD&D budget by technology

	Energy efficiency       	Fossil fuels            	Renewable energy sources	Hydrogen and fuel cells 	Other power and storage	Cross-cutting              	Unallocated	Nuclear                 
1974	457.5	1016.4	325.5	0	233.6	942	0	8817.9
1980	1455.8	3660	2757.1	0	665.6	1606.2	0	11737.9
1990	844.3	2524.4	875.7	0	381.7	1481.9	0	6705.1
2000	1766.4	748.4	941	0	697.8	1626.8	0	4828.4
2010	4031.1	2331.6	3790.3	892.1	992.4	598.4	0	5188.9
2017	4075.1	1363.5	3296.1	468.9	1610.3	3533.2	249.2	3398.7
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Total public energy RD&D for selected countries

	United Kingdom	Germany	Canada	France	Japan	United States	Italy	Korea	Other IEA
2005	0.127953	0.593901	0.485441	1.146732	4.14819	4.069652	0.426982	0.485636	1.784748
2010	0.816112	0.888847	1.034784	1.306969	3.642346	5.34016	0.707378	0.789407	4.822287
2016	0.591939	1.143024	0.536685	1.193607	2.838586	6.675948	0.7401	0.75559	3.68036
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Notes: all other IEA member countries are included, based on available or estimated data.

Share of energy in total R&D by region

	1981	1990	2000	2016
IEA Total	11.2	5.5	4	4.3
IEA Americas	10.2	4.3	1.4	2.6
IEA Europe	10.8	4	3.2	3.7
IEA Asia Oceania	16.1	16.3	14	10
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Notes: includes energy R&D budgets and excludes demonstration.