In 2025, Slovenia is heavily reliant on low-carbon electricity, which accounts for almost 80% of its electricity consumption. This includes a significant contribution from nuclear power, which provides more than 40% of the country's electricity, and hydropower, which supplies over 30%. Despite advances in clean energy, fossil fuels still represent roughly 21% of electricity consumption, with coal contributing around 14% and gas about 7%. Solar power, although a low-carbon source, accounts for just under 6% of the electricity mix, suggesting there is room for growth in this sector to further reduce dependence on fossil fuels, which contribute to climate change and air pollution.
Data sources used on this page include ENTSOE and IEA. More about data sources →
Is Electricity Growing in Slovenia?
The state of electricity consumption in Slovenia suggests a concerning trend: electricity consumption per person has significantly declined from its peak in 2014. In 2025, each person consumed around 6,288 kWh, which is a notable drop of over 2,180 kWh per person from the highest point recorded in 2014. This decrease in overall consumption mirrors the decline in low-carbon electricity generation per person, which has fallen from a record high of 6,440 kWh in 2014 to 4,973 kWh in 2025. Such stagnation in the growth of clean electricity is disappointing and raises concerns for Slovenia, particularly when future demand increases with further electrification and technological advancements.
Suggestions
To boost low-carbon electricity generation, Slovenia could expand its current nuclear capacities, given their importance in the existing energy mix. Following the lead of countries like Slovakia and France, where nuclear energy contributes a substantial portion of electricity, could bolster Slovenia's green energy credentials. Additionally, adopting solar strategies from states such as Nevada and California, which produce 33% and 29% of their electricity from solar power respectively, could be instrumental in transforming Slovenia's solar capacities. Wind energy could also play a role; regions like Ireland and Lithuania have proven the efficacy of wind, accounting for around 30% of their energy portfolios. Learning from these successes can help Slovenia diversify and expand its clean energy arsenal.
History
Historically, Slovenia's low-carbon electricity generation has experienced fluctuations, particularly in hydropower and nuclear energy. In the early 1990s, changes were marked by a decline in nuclear generation in 1992, followed by growth in both nuclear and hydroelectric capacity throughout the following decades. The 2000s saw steady increases in hydropower, but declines occurred again in 2015 and 2022. Recent years show growth in solar and hydro in 2023, though both faced setbacks in 2025. Notably, the reductions in nuclear power in some years were significant, underscoring the need for sustained investment and support for this key low-carbon energy source to ensure a stable and growing clean electricity supply for Slovenia's future.
