Since 2013, the EAPI has provided a tool for decision-makers to help better understand energy systems and to assess the current energy architecture performance of individual nations.
The EAPI is a composite index that focuses on tracking specific indicators to measure the energy system performance of 127 countries. At its core are 18 indicators defined across the three sides of the “energy triangle”, which are: economic growth and development, environmental sustainability, and energy access and security (Figure 1).
Scores (on a scale of 0 to 1) and associated rankings are calculated for each of these indicators. These are then aggregated based on defined weights to calculate a score and ranking for each sub-index and for the EAPI overall. A methodological addendum on the EAPI can be found in the appendices, and the full methodology is available online at http://wef.ch/eapimethodology.