Addendum on methodology
This section presents the methodology for the global Energy Architecture Performance Index (EAPI) 2017. A more detailed description of the methodology is available online at http://wef.ch/eapimethodology. The EAPI is a composite index that measures a global energy system’s performance across the three imperatives of the energy “triangle”: (i) economic growth and development, (ii) environmental sustainability and (iii) energy access and security.
The EAPI focuses on tracking specific and output-oriented indicators to measure the energy system performance of a variety of countries. It includes 18 indicators, aggregated into three baskets relating to the three imperatives, to both score and rank the performance of each country’s energy architecture. The EAPI is split into three sub-indexes. The score attained on each sub-index is averaged to generate an overall score. The three sub-indexes are:
- Economic growth and development: The extent to which energy architecture supports, rather than detracts from, economic growth and development
- Environmental sustainability: The extent to which energy architecture has been constructed to minimize negative environmental externalities
- Energy access and security: The extent to which energy architecture is at risk of an energy security impact, and whether adequate access to energy is provided to all parts of the population
Indicators: Selection criteria and profiles
Where possible, the EAPI team aimed to select indicators against the following criteria:
- Output data only: Measuring output-oriented observational data (with a specific, definable relationship to the sub-index in question) or a best-available proxy, rather than estimates
- Reliability: Using reliable source data from renowned institutions
- Reusability: Sourcing data from providers with which the EAPI can work on an annual basis, thus allowing for data to be updated with ease
- Quality: Selecting data that represents the best measure available given constraints; with this in mind, all potential data sets were reviewed by the Expert Panel for quality and verifiability, and those that did not meet these basic quality standards were discarded
- Completeness: Using data of adequate global and temporal coverage, consistently treated and checked for periodicity to ensure the EAPI’s future sustainability
Where data is missing for a particular year within an indicator, the latest available data point is extrapolated forwards until a more recent result is obtained.
Key adjustments for EAPI 2017
The aim is to keep the methodology consistent with previous years’ reports for year-on-year comparison. However, minor adjustments are made to reflect issues such as discontinuation of data and improvements to the model. The key adjustments to this year’s report are:
- Normalization: Minor adjustments have been made in normalization scores.
- Extreme values removed: For example, the electricity price for Italy has been removed following reviews of PX-Web databases of ENEL, the Italian electricity company.
Figure A.1 details each of the indicators selected, the weight attributed to it within its basket (or sub-index), what it measures and the energy system objective that it contributes to, either positively or negatively.
Weights, measures and abbreviations
|$||All $ in US$ unless otherwise noted|
|CerPI||Investment Projects backed Certificates|
|COP21||United Nations 21st Conference of the Parties|
|EAPI||Energy Architecture Performance Index|
|EU28||28 Member States of the European Union|
|GDP||Gross domestic product|
|GIZ||German Federal Enterprise for International Cooperation|
|IEA||International Energy Agency|
|LNG||Liquefied natural gas|
|OECD||Organisation for Economic Co-operation and Development|
|PM2.5||Particulate matter less than 2.5 micrometres in diameter (also called “fine particles”)|
|PPP||Purchasing power parity|