Methodology

The data used on this website comes from a number of sources, listed further down. The process of validating and merging data involves several steps. Validation is mainly done by comparing calculated and listed totals, for each region and worldwide. Data points that do not meet a certain acceptable level of error are discarded. Subsequently an ideal data source is chosen for each region and year. In some cases there is only one source available for the specific region and year. If multiple sources are available, the source which includes the most specific data is chosen. For example, some data sources group certain energy types together, such as Geothermal and Biofuels. In these cases the more specific data point is preferred. To find out which source was used for each data point you can download the combined data further down on this page.

Download Data

You can download the data used in the charts and tables on this site:

Data Sources

The main electricity data used on this website comes from IEA, Ember, EIA, the World Bank and BP. The trade data used to calculate net imports comes from Enerdata, IEA and Ember. Data for each region and year is taken from one single source. Here is an overview of the relative use of each data source:

Source Data points used Years
IEA 3896 1990 - 2019
EIA 1757 1980 - 2018
Ember 1232 2000 - 2020
WorldBank 544 1971 - 1989
BP 366 1985 - 2019

Links to the data sources:

The energy storage data comes from the Global Energy Storage Database Projects from Sandia National Laboratories.

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