In December 2025, Slovenia reported a modest increase of 1% in net electricity generation compared to the same month in the previous year, reaching a total of 1,280 GWh. However, this figure represents a 3% decrease from November 2025 levels, indicating mixed trends in energy supply and generation.
Thermal power plants contributed positively to the generation mix, with production rising by 3% year-on-year. Conversely, hydropower generation saw a decline of 4%, while output from the Krško nuclear power plant remained stable. Notably, renewable energy sources such as wind and solar experienced significant growth, with production increasing by 15% during the same period.
Electricity imports decreased to 819 GWh in December, marking a 14% drop from December 2024. Exports also fell by the same percentage to total 840 GWh. Household electricity consumption surged by 29% from November to reach 406 GWh, contrasting with a decline in commercial consumption, which fell by 16% to 552 GWh.
Overall energy commodity supply exhibited a downward trend in December, with notable exceptions including lignite and brown coal, which increased by 27%, natural gas at +7%, and kerosene rising by 2% compared to November. In contrast, supplies of other petroleum products plummeted significantly: hard coal decreased by 24%, coke by 16%, heating oil by 15%, LPG by 8%, diesel by 7%, and petrol by 2%.
When examining year-on-year figures against December 2024, the supply of LPG decreased by 23%, lignite and brown coal fell by 11%, heating oil declined by 6%, and coke saw a reduction of 5%. These trends reflect an overall decrease in the availability of energy commodities within Slovenia’s energy landscape.
