Slovakia is making a noteworthy impact in the realm of sustainable electricity, with a remarkable 85.75% of its electricity coming from low-carbon sources. This accomplishment is predominantly driven by nuclear energy, which accounts for about two-thirds of the country’s electricity, while hydropower contributes around 13%. A small portion, about 3%, is derived from biofuels. Additionally, solar and other unspecified clean energy sources make up a modest share. On the flip side, fossil fuels represent slightly more than a tenth of Slovakia's electricity, with gas being the main contributor. Slovakia's position as a significant net exporter of clean electricity not only helps support its neighbors in reducing emissions but also underscores its role as a leader in sustainability. However, to maintain and improve this status, Slovakia needs to embrace the challenge of electrifying other sectors, such as transport and industry, thereby necessitating further expansion 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 impressive commitment to low-carbon electricity, its overall electricity consumption has shown a decrease. The current consumption stands at 5249 kWh per person, a decline from the previous peak recorded in 2002, which was 6030 kWh per person. This indicates a reduction of about 781 kWh per person in overall consumption. Conversely, low-carbon electricity generation has seen a slight increase, going from 4386 kWh per person in 2002 to 4501 kWh in 2025, reflecting an encouraging growth of 115 kWh per person. This subtle improvement in low-carbon generation is a positive step, though the shrinking total consumption suggests a need to boost electricity use to support future electrification and innovation.
Suggestions
For Slovakia to further increase its low-carbon electricity generation, expanding its nuclear and solar capacity would be a sensible approach. The country’s long-standing reliance on nuclear energy has proven both effective and sustainable, and expanding this would solidify its low-carbon infrastructure. Solar energy, despite representing a small portion currently, has the potential to significantly augment clean electricity. By investing in these technologies, Slovakia can meet rising electricity demands from electrification and contribute to global emission reduction efforts. This pursuit not only aims to sustain Slovakia's leadership in clean energy but also ensures economic growth and energy security.
History
Historically, Slovakia has experienced varied developments in low-carbon electricity generation. The late 20th century saw substantial gains for nuclear energy in 1986 and the early 1990s. However, this momentum faced setbacks in the mid to late 1990s with some reductions. The early 2000s were marked by fluctuating nuclear output, while hydropower experienced a decrease in 2003. A more troubling period for nuclear energy occurred around 2007 and 2009, with notable declines. However, recent years have shown a return to form, with significant increases in nuclear capacity in 2023 and 2025. These developments illustrate Slovakia's persistent journey toward enhancing its low-carbon electricity supply, a pursuit that should be intensified to fully capitalize on the benefits of sustainable energy.
