(2014), the autonomous decline of national carbon intensity, which is induced by autonomous energy efficiency improvement (
AEEI) without any emissions reduction policies, is 29.969% over the period 2007-2020.
In some particularly problematic cases, modelers use the so-called AEEI parameter, especially when using CES (Solow) functions.
APPENDIX B: AEEI METHOD--COMPARISON TO ENERGY-AUGMENTING TECHNICAL CHANGE
Population, labour and automatic energy efficiency (
AEEI) improvement index are exogenously specified based on best available information.
* End Use Technology--low versus high: ADAGE normally uses autonomous energy efficiency improvements (
AEEI) to match AEO forecasts through 2035.
In true 'top-down' models, supply side technologies were reflected in assumptions about the elasticity of substitution between generic carbon and non-carbon sources (if any), whilst an "autonomous energy efficiency improvement" (
AEEI) parameter was often used to reflect an assumed degree of decoupling between GDP and energy consumption--a single, fixed parameter encompassing both structural change in the relationship between economy and energy and the development and diffusion of demand-side technologies.