Czechia vs Slovakia: Electricity Compared
Czechia generated 75.4 TWh of electricity in 2025 and Slovakia 29.1 TWh, according to Ember. Nuclear was the largest source in both, at 42.4% in Czechia and 66.4% in Slovakia. Each kWh generated emitted 401 gCO2/kWh in Czechia and 95 gCO2/kWh in Slovakia. These are Ember annual statistics for 2025, compiled from national sources; they are not real time.
Why this comparison: neighbours by land border or interconnector.
Key Facts
- Coal supplied 35.2% of Czechia's electricity in 2025, against 1.1% in Slovakia.
- Czechia's electricity was 4.2 times as carbon intensive as Slovakia's in 2025, at 401 gCO2/kWh against 95 gCO2/kWh.
- Low carbon sources supplied 59.3% of Czechia's electricity in 2025 and 85.2% of Slovakia's.
- Electricity demand in 2025 was 68.0 TWh in Czechia and 26.7 TWh in Slovakia.
Key Figures, 2025
Ember annual statistics| Measure | Czechia | Slovakia |
|---|---|---|
| Total generation | 75.4 TWh | 29.1 TWh |
| Electricity demand | 68.0 TWh | 26.7 TWh |
| Demand per person | 6.42 MWh | 4.88 MWh |
| Carbon intensity | 401 gCO2/kWh | 95 gCO2/kWh |
| Power sector emissions | 30.3 MtCO2 | 2.76 MtCO2 |
| Low carbon share | 59.3% | 85.2% |
| Largest source | Nuclear 42.4% | Nuclear 66.4% |
Generation Mix, 2025
Share of generation| Source | Czechia | Slovakia |
|---|---|---|
| Nuclear | 42.4% | 66.4% |
| Coal | 35.2% | 1.1% |
| Gas | 5.4% | 11.3% |
| Hydro | 2.3% | 10.9% |
| Bioenergy | 8.0% | 5.4% |
| Solar | 5.8% | 2.4% |
| Other fossil | 0.2% | 2.5% |
| Wind | 0.8% | 0.0% |
| Other renewables | 0.0% | 0.0% |
Carbon Intensity, 1990 to 2025
Ember annual statisticsAnnual statistics through 2025, gCO2/kWh
| Year | Czechia | Slovakia |
|---|---|---|
| 1990 | 778 gCO2/kWh | 387 gCO2/kWh |
| 1991 | 779 gCO2/kWh | 371 gCO2/kWh |
| 1992 | 767 gCO2/kWh | 392 gCO2/kWh |
| 1993 | 759 gCO2/kWh | 325 gCO2/kWh |
| 1994 | 747 gCO2/kWh | 273 gCO2/kWh |
| 1995 | 756 gCO2/kWh | 322 gCO2/kWh |
| 1996 | 749 gCO2/kWh | 323 gCO2/kWh |
| 1997 | 758 gCO2/kWh | 332 gCO2/kWh |
| 1998 | 749 gCO2/kWh | 322 gCO2/kWh |
| 1999 | 737 gCO2/kWh | 306 gCO2/kWh |
| 2000 | 767 gCO2/kWh | 251 gCO2/kWh |
| 2001 | 752 gCO2/kWh | 251 gCO2/kWh |
| 2002 | 699 gCO2/kWh | 225 gCO2/kWh |
| 2003 | 652 gCO2/kWh | 257 gCO2/kWh |
| 2004 | 640 gCO2/kWh | 253 gCO2/kWh |
| 2005 | 647 gCO2/kWh | 239 gCO2/kWh |
| 2006 | 634 gCO2/kWh | 231 gCO2/kWh |
| 2007 | 652 gCO2/kWh | 235 gCO2/kWh |
| 2008 | 628 gCO2/kWh | 224 gCO2/kWh |
| 2009 | 603 gCO2/kWh | 221 gCO2/kWh |
| 2010 | 594 gCO2/kWh | 205 gCO2/kWh |
| 2011 | 584 gCO2/kWh | 214 gCO2/kWh |
| 2012 | 553 gCO2/kWh | 204 gCO2/kWh |
| 2013 | 527 gCO2/kWh | 181 gCO2/kWh |
| 2014 | 531 gCO2/kWh | 173 gCO2/kWh |
| 2015 | 553 gCO2/kWh | 178 gCO2/kWh |
| 2016 | 574 gCO2/kWh | 177 gCO2/kWh |
| 2017 | 543 gCO2/kWh | 184 gCO2/kWh |
| 2018 | 533 gCO2/kWh | 191 gCO2/kWh |
| 2019 | 503 gCO2/kWh | 171 gCO2/kWh |
| 2020 | 460 gCO2/kWh | 159 gCO2/kWh |
| 2021 | 472 gCO2/kWh | 167 gCO2/kWh |
| 2022 | 488 gCO2/kWh | 142 gCO2/kWh |
| 2023 | 443 gCO2/kWh | 115 gCO2/kWh |
| 2024 | 414 gCO2/kWh | 97 gCO2/kWh |
| 2025 | 401 gCO2/kWh | 95 gCO2/kWh |
Demand per Person, 1990 to 2025
Ember annual statisticsAnnual statistics through 2025, MWh
| Year | Czechia | Slovakia |
|---|---|---|
| 1990 | n/a | n/a |
| 1991 | n/a | n/a |
| 1992 | n/a | n/a |
| 1993 | n/a | n/a |
| 1994 | n/a | n/a |
| 1995 | n/a | n/a |
| 1996 | n/a | n/a |
| 1997 | n/a | n/a |
| 1998 | n/a | n/a |
| 1999 | n/a | n/a |
| 2000 | 6.14 MWh | 5.22 MWh |
| 2001 | 6.32 MWh | 5.23 MWh |
| 2002 | 6.31 MWh | 5.21 MWh |
| 2003 | 6.50 MWh | 5.34 MWh |
| 2004 | 6.63 MWh | 5.32 MWh |
| 2005 | 6.74 MWh | 5.22 MWh |
| 2006 | 6.89 MWh | 5.38 MWh |
| 2007 | 6.93 MWh | 5.50 MWh |
| 2008 | 6.92 MWh | 5.43 MWh |
| 2009 | 6.53 MWh | 5.06 MWh |
| 2010 | 6.72 MWh | 5.29 MWh |
| 2011 | 6.63 MWh | 5.37 MWh |
| 2012 | 6.61 MWh | 5.31 MWh |
| 2013 | 6.57 MWh | 5.28 MWh |
| 2014 | 6.53 MWh | 5.21 MWh |
| 2015 | 6.65 MWh | 5.35 MWh |
| 2016 | 6.74 MWh | 5.43 MWh |
| 2017 | 6.90 MWh | 5.60 MWh |
| 2018 | 6.91 MWh | 5.57 MWh |
| 2019 | 6.88 MWh | 5.49 MWh |
| 2020 | 6.63 MWh | 5.29 MWh |
| 2021 | 6.89 MWh | 5.60 MWh |
| 2022 | 6.58 MWh | 5.11 MWh |
| 2023 | 6.16 MWh | 4.73 MWh |
| 2024 | 6.16 MWh | 4.83 MWh |
| 2025 | 6.42 MWh | 4.88 MWh |
Czechia history · Slovakia history
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.