Slovenia’s March power mix shifts: hydro weakens, renewables rise as generation edges down

Slovenia’s electricity balance in March 2026 reflected a clear shift in the country’s power mix, with hydropower under pressure even as wind and solar generation expanded. The result was a year-on-year decline in net electricity generation, a development that matters for investors tracking supply reliability and the pace of renewable integration.

Generation down year-on-year as hydropower falls

According to data from the Statistical Office of the Republic of Slovenia, net electricity generation decreased by 9% year-on-year in March 2026. Total net generation reached 1,294 GWh, up 10% compared with the previous month.

Thermal power plant output fell by 7% year-on-year to 361 GWh. Hydropower production dropped significantly by 36% year-on-year to 265 GWh. By contrast, the Krško nuclear power plant maintained stable production at approximately 521 GWh.

Renewables continued to gain ground: wind and solar generation rose by 45% year-on-year to 146 GWh, underscoring ongoing growth in non-hydro sources.

Trade surplus narrows as exports decline

On the trade side, Slovenia imported 768 GWh of electricity in March 2026, up 7% compared with March 2024. Exports totaled 836 GWh, down 14% year-on-year. Taken together, the figures point to a slightly reduced export surplus versus the prior year.

Consumption shows mixed signals

Final consumption also moved unevenly. Household electricity consumption was 303 GWh, down 3% compared with the previous month. Commercial consumption increased by 6%, reaching 609 GWh, suggesting stronger activity in business demand during the period.

Energy supply trends improve overall despite commodity declines

In energy commodities, supply trends were generally positive in March across most categories. However, declines were recorded for kerosene (-6%), natural gas (-5%), LPG (-5%), and coke (-3%). Other petroleum products rose sharply month-on-month (+188%), while hard coal increased (+44%), diesel (+13%), petrol (+13%), and lignite and brown coal (+9%).

Year-on-year comparisons showed broad increases as well: other petroleum products rose by 120%, kerosene by 41%, petrol by 9%, natural gas by 5%, and hard coal by 3%. Overall, the data depict a stronger energy market backdrop than a year earlier even as hydropower weakness weighed on total generation.