European Commission - Eurostat

Unit E.5: Energy

European Commission - Eurostat
Unit ESTAT.E.5: Energy
L-2920 Luxembourg

Diversity index shows in one figure how varied energy sources used in a country are – the composition of energy sources in the energy mix. It is based on the Herfindahl-Hirschman index principle. This indicator can reach values only between 0 and 1. Lower values of this index means more varied sources (fuel mix); higher values means less variation (tendency towards a limites set of dominant fuels).

This indicator can help to see how diversified the fuel mix is and how easily a single event can affect it, be it drought (hydro power shortage), excessive prices (natural gas, electricity) or any other event.

Diversity index is caluclated from data in energy balances. It is calulated for overall supply (primary production + recovered & recycled products + imports + stock draw) and for sectors/categories of final energy consumption.

In the calculation above, PP= primary production, RR = recovered & recycled products, I = imports, SD = stock draw, F means fuel and all availabel fuels of energy balance are used.

Resulting calculations are rounded to 4 decimal places.

[INX] Index

The calendar year (January - December)

The indicator is produced according to the high-level quality standards of European Statistical System. While indirect indicators suggest overall accuracy of energy balance should be in general high, quantitative assessment of accuracy was not performed by Eurostat. Please see Related metadata for details on accuracy of the source datasets used to calculate this indicator.

European Commission - Eurostat

Please see Related metadata for specific information on source data used to calculate this indicator.

Every year

Revisions several time per year are possible.

T+2 years

All EU MS

Data are presented for all EU Member States

All EU MS

Data are comparable between all EU Member States and between other presented countries.

> 10 years

All  EU Member States have long time series

> 4 data points

Comparability over time is ensured with a solid methodology harmonised on international level that is stable over long periods. Occasional breaks in time series are present due to the developments of statistical systems on national level and the level of detailed information (micro data) available at national level.

In general comparability is very high in last 10 years and for older periods slowly decreasing. In addition, introduction of new statistical information in the most recent data collections can lead to breaks in series until information is compiled and provided by reporting countries.

https://ec.europa.eu/eurostat/web/energy/publications

Paper publications have been abolished.

Dissemination is maintained on Eurostat's database:  https://ec.europa.eu/eurostat/web/energy/database

Information not available. Redissemination of this indicator is not monitored.

No flags are used in this indicator, please refer to source datasets for all specificities and particularities.
This dataset is not dynamicaly linked to source data and consequently data revisions are not immediately applied.