Kaya identity

proper noun

A mathematical identity that disaggregates the total emission level of the greenhouse gas carbon dioxide so that it can be expressed as the product of four calculable factors: human population, gross domestic product per capita, energy intensity (per unit of GDP), and carbon intensity (emissions per unit of energy consumed).

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Meanings

proper nounthe Kaya identity
  1. A mathematical identity that disaggregates the total emission level of the greenhouse gas carbon dioxide so that it can be expressed as the product of four calculable factors: human population, gross domestic product per capita, energy intensity (per unit of GDP), and carbon intensity (emissions per unit of energy consumed).

Origin

Developed by Japanese energy economist Yoichi Kaya.

Full word history & related roots →
Cite this entry
APA

Kaya identity. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Kaya%20identity

MLA

“Kaya identity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Kaya%20identity. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Kaya identity,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Kaya%20identity.

Source: Kaya identity on Wiktionary, CC BY-SA 4.0.