KAYA Factors


Export & share >

About ... Percentage Change in KAYA Factors

Zeynep Kahraman, TSP team

Story:

This chart presents the decomposition of CO2co2 emissions into four driving factors following the Kaya identity, which is generally presented in the form:

C = P*(Y/P)*(E/Y)*(C/E)

where:

C = CO2co2 emissions; 
P = population
Y = GDP
E = primary energy consumption
 

The identity expresses, for a given time, CO2co2 emissions per capita, economic output per person, energy intensity of the economy and carbon intensity of the energy.

The Kaya identity can be used to discuss the primary driving forces of CO2co2 emissions. For example, it shows that, globally, increasing economic output per capita and population have been driving CO2co2 emissions upwards, decreasing energy intensity has the inverse effect. 

 

Data Source:

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.

Population (millions)

United Nations Statistics Division for 1980-2013

United Nations Statistics Division, Go to UNdata database, data accessed 7th July 2013.

 GDP by Type of Expenditure at constant (2005) prices and GDP by Purchasing Power Parities at constant (2005) prices:  

- World Development Indicators for 1980-2013

World Bank, World Development Indicators,Go to World Bank database, data accessed May 2014.

Context and definitions

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 in Mtoe (TSP calculation see: Primary Energy Consumption Statistics)  for each country and year by the gross domestic market exchange rates in billions of (2005) U.S. dollars and purchasing power parities in billions of (2005) U.S. dollarsfor each available country and year from United Nations Statistics Division.

 

 

See also with same dataset

64
Ranking of countries by how much CO2co2 emitted by each person per year
14
Energy Balance by Country
Comparing countries inland production and consumption of primary energy
56
Ranking the countries that use energy less efficiently by how much energy they consume for every dollar of GDP they produce

See also with same theme

19
Compare the ranking of top 20 countries based on their primary energy production
60
Ranking of the most carbon efficient countries
38
Compare the most greenhouse gas emitting sectors
of the TOP 20 emitter countries