For the years 1990 to 2003 the data source is
IEA.
For the years 2004 to 2006 the data source is
Ember.
For the year 2007 the data source is
IEA.
For the years 2008 to 2012 the data source is
Ember.
For the years 2013 to 2018 the data source is
IEA.
For the year 2019 the data sources are
IEA
and
IEA (imports/exports).
For the years 2020 to 2024 the data source is
Ember.
For the months 2024-02 to 2025-01 the data source is
ENTSOE.