Over the past year, Slovenia has made significant strides in greening its electricity consumption. From June 2025 to May 2026, more than three-quarters of Slovenia's electricity came from low-carbon sources, a noteworthy achievement in the realm of sustainable energy. Among these low-carbon sources, nuclear energy contributed the largest share, accounting for around 40% of total electricity, followed by hydropower which was responsible for roughly 26%. Additionally, solar power provided just over 11% of the electricity, demonstrating Slovenia's growing embrace of solar as a clean energy solution. Contrarily, fossil fuels still played a role, contributing to nearly 19% of electricity needs, with coal and gas responsible for just over 10% and 8% respectively. This blend of energy sources underscores Slovenia's commitment to reducing reliance on fossil fuels, though there remains room for improvement.

Is Electricity Growing in Slovenia?

In the broader context of electricity consumption trends, Slovenia is facing a challenging scenario. The latest statistics show that electricity consumption per person stands at approximately 6,446 kWh as of 2026, a notable decrease from the 2014 all-time high of 8,471 kWh. This represents a decline of about 2,025 kWh per person. The pattern is mirrored in low-carbon electricity generation, with current numbers at 5,125 kWh per person—down roughly 1,315 kWh from 2014's peak of 6,440 kWh. This downturn is concerning, as it suggests a stalled or even reversed progression in electricity growth at a time when expanding clean energy is crucial for environmental sustainability and technological advancement.

Suggestions

To bolster its low-carbon electricity generation, Slovenia should consider expanding its existing nuclear and solar capabilities. With nuclear power already leading the country's low-carbon efforts, further investments and expansions could solidify its role in Slovenia's energy transition. Moreover, increasing solar capacity would take advantage of Slovenia's already promising solar performance. Slovenia can take cues from countries like France and Slovakia, where nuclear power meets more than half of their electricity needs. Similarly, observing solar leaders like California and North Macedonia could provide insights into rapidly scaling solar infrastructure. Emulating the successful integration of these technologies would enable Slovenia to not only reduce fossil fuel dependency but also meet the growing demands of future electrification and technological advancements.

History

Historically, Slovenia has seen fluctuating progress with its low-carbon electricity sources. In the 1990s, both nuclear and hydropower experienced varied changes, with hydro seeing a boost in 1991 and nuclear decreasing in 1992. Into the 21st century, hydro saw significant increases in 2004, 2008, and 2013, while nuclear had a notable increment in 2014. However, periods of decline in nuclear generation occurred in 2012, 2015, and other years, which raises concerns about sustainability and consistency. The country witnessed mixed results with hydropower, with ups and downs from 2015 onwards, including a recent decline in 2025. Slovenia's path to increasing its low-carbon electricity generation is clear: reinforce nuclear and solar energy strategies, follow successful examples from other regions, and ensure steady advancements in clean electricity to avoid setbacks.

Electricity Imports and Exports

Balance of Trade

* 12M = Last 12 months (Jun 2025 – May 2026) — a rolling 12-month period, not a calendar year.