The energy intensity is the ratio of primary energy consumption over gross domestic product measured in constant US $ at market exchange rates or purchasing power parities and is often used as an index to measure the energy conservation of a country which includes technological and behavioral factors.
Historical Energy Consumption statistics:
- US EIA Historical Statistics for 1980-2013
U.S. Energy Information Administration, International Energy Statistics, Go to EIA database data accessed 5th of August 2014.
GDP by Type of Expenditure at constant (2005) prices and GDP by Purchasing Power Parities at constant (2005) prices and Electricity Production:
- World Development Indicators for 1980-2013
World Bank, World Development Indicators,Go to World Bank database, data accessed May 2014.
Total primary energy consumption reported in this table includes the consumption of petroleum, dry natural gas, coal, and net nuclear, hydroelectric, and non-hydroelectric renewable electricity. Total primary energy consumption for each country also includes net electricity imports (electricity imports minus electricity exports).
Individual energy intensities are calculated by dividing the primary energy consumption data in Mtoe (TSP calculation see: Primary Energy Consumption Statistics) by the gross domestic market exchange rates data in billions of (2005) U.S. dollars and purchasing power parities data in billions of (2005) U.S. dollars for each available country and year from United Nations Statistics Division.