Slovakia has made remarkable strides in integrating low-carbon energy sources into its electricity generation mix, with more than 85% of its electricity currently derived from clean energy. The predominant source is nuclear, contributing approximately two-thirds of the total electricity, while hydropower accounts for over one-tenth. A smaller share comes from solar, highlighting potential for growth in this sector. Fossil fuels, on the other hand, constitute just over 14%, with gas being the primary contributor, followed by oil. This heavy reliance on low-carbon sources establishes Slovakia as a significant net exporter of electricity, aiding neighboring regions in their efforts to reduce emissions. The country stands at the cusp of a new challenge: the need to electrify other key sectors such as transport, heating, and industry, which will demand a substantial increase in electricity production.
Data sources used on this page include Energy Institute, ENTSOE, Eurostat and IEA. More about data sources →
Is Electricity Growing in Slovakia?
Despite Slovakia's achievements in low-carbon electricity generation, the country's overall electricity consumption has seen a decline. As of 2025, per capita electricity use stands at 4914 kWh, a decrease from the historic peak of 6030 kWh in 2002. This reduction highlights a worrying trend in electricity consumption, given the global push towards electrification. Particularly in low-carbon electricity generation, Slovakia's per-person output is 4216 kWh, slightly down from the previous high of 4386 kWh in 2002. The minor decline in clean energy output underlines the importance of reinvigorating growth in this area to meet future demands driven by technological advancements and the electrification of various sectors.
Suggestions
To bolster low-carbon electricity generation, Slovakia can focus on expanding its existing nuclear infrastructure, given its substantial role in current electricity production. Nuclear energy offers a reliable and efficient source of clean electricity that can support the country's ambitious goals. Alongside nuclear expansion, enhancing solar capacity presents a significant opportunity for sustainable growth. Increasing investment in these technologies will not only secure Slovakia's energy future but also ensure it continues to contribute to emission reductions in the region. Slovakia must capitalize on the potential of these clean energy sources to drive economic growth and environmental sustainability.
History
Reflecting on the history of low-carbon electricity in Slovakia, the late 20th and early 21st centuries witnessed noteworthy trends and fluctuations. In the late 1980s, nuclear energy surged with an impressive increase of 2.3 TWh in 1986, followed by a substantial gain in hydropower by 1.5 TWh in 1993. The period surrounding the turn of the millennium was marked by significant expansions in nuclear generation, including a notable uplift in 1999 and 2000 by 1.7 TWh and 3.4 TWh, respectively. However, these gains were punctuated by declines, particularly a sharp drop in nuclear output starting in 2007 with -2.7 TWh and in 2009 with -2.6 TWh. In contrast, recent years have seen a resurgence in nuclear energy, with a 2.2 TWh increase in 2023. This history underscores the critical need for consistent and strategic investments in low-carbon sources like nuclear, essential for delivering a sustainable and reliable energy future.
