Switzerland Electricity: Generation Mix, Demand and Emissions
Switzerland generated 65.0 TWh of electricity in 2025, according to Ember. Hydro was the largest source at 52.3%, followed by nuclear (29.9%) and solar (12.1%). Demand was 65.1 TWh and each kWh generated emitted 39 gCO2/kWh. These are annual statistics for 2025, with monthly figures through May 2026; they are compiled from national sources and are not real time.
Key Facts
- Switzerland generated 65.0 TWh of electricity in 2025.
- Hydro supplied 52.3% of Switzerland's electricity in 2025.
- Nuclear supplied 29.9% of Switzerland's electricity in 2025.
- Solar supplied 12.1% of Switzerland's electricity in 2025.
- Low carbon sources (nuclear and renewables) supplied 97.7% of Switzerland's generation in 2025.
- The carbon intensity of Switzerland's electricity was 39 gCO2/kWh in 2025.
- Switzerland's carbon intensity in 2025 was 16% higher than in 2000, when it was 34 gCO2/kWh.
- Switzerland had the 42nd highest electricity demand among the 93 countries with Ember data for 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Total generation | 65.0 TWh | 2025 · Ember |
| Electricity demand | 65.1 TWh | 2025 · Ember |
| Demand per person | 7.26 MWh | 2025 · Ember |
| Net imports | 60.0 GWh | 2025 · Ember |
| Carbon intensity | 39 gCO2/kWh | 2025 · Ember |
| Power sector emissions | 2.54 MtCO2 | 2025 · Ember |
| Demand rank (countries with 2025 data) | 42 of 93 | 2025 · Ember |
Generation Mix, 2025
| Source | Generation | Share |
|---|---|---|
| Hydro | 34.0 TWh | 52.3% |
| Nuclear | 19.4 TWh | 29.9% |
| Solar | 7.89 TWh | 12.1% |
| Other fossil | 1.23 TWh | 1.9% |
| Bioenergy | 1.04 TWh | 1.6% |
| Other renewables | 1.04 TWh | 1.6% |
| Gas | 270 GWh | 0.4% |
| Wind | 140 GWh | 0.2% |
Year by Year
Ember annual statistics, 2000 to 2025| Year | Hydro | Nuclear | Solar | Other fossil | Bioenergy |
|---|---|---|---|---|---|
| 2000 | 36.8 TWh | 26.5 TWh | 10.0 GWh | 1.13 TWh | 210 GWh |
| 2001 | 41.3 TWh | 26.8 TWh | 10.0 GWh | 1.19 TWh | 200 GWh |
| 2002 | 35.2 TWh | 27.2 TWh | 10.0 GWh | 1.19 TWh | 210 GWh |
| 2003 | 34.8 TWh | 27.5 TWh | 20.0 GWh | 1.20 TWh | 220 GWh |
| 2004 | 33.8 TWh | 27.0 TWh | 20.0 GWh | 1.21 TWh | 220 GWh |
| 2005 | 31.2 TWh | 23.3 TWh | 20.0 GWh | 1.30 TWh | 220 GWh |
| 2006 | 31.0 TWh | 27.8 TWh | 20.0 GWh | 1.39 TWh | 230 GWh |
| 2007 | 35.3 TWh | 27.9 TWh | 30.0 GWh | 1.29 TWh | 290 GWh |
| 2008 | 36.0 TWh | 27.7 TWh | 40.0 GWh | 1.28 TWh | 320 GWh |
| 2009 | 35.7 TWh | 27.7 TWh | 50.0 GWh | 1.24 TWh | 360 GWh |
| 2010 | 36.1 TWh | 26.3 TWh | 90.0 GWh | 1.21 TWh | 360 GWh |
| 2011 | 32.4 TWh | 26.7 TWh | 170 GWh | 1.19 TWh | 440 GWh |
| 2012 | 38.6 TWh | 25.4 TWh | 300 GWh | 1.25 TWh | 530 GWh |
| 2013 | 38.5 TWh | 26.0 TWh | 500 GWh | 1.28 TWh | 580 GWh |
| 2014 | 38.0 TWh | 27.6 TWh | 840 GWh | 1.35 TWh | 590 GWh |
| 2015 | 38.3 TWh | 23.1 TWh | 1.12 TWh | 1.23 TWh | 520 GWh |
| 2016 | 34.6 TWh | 21.2 TWh | 1.33 TWh | 1.28 TWh | 580 GWh |
| 2017 | 34.1 TWh | 20.4 TWh | 1.68 TWh | 1.29 TWh | 690 GWh |
| 2018 | 35.0 TWh | 25.5 TWh | 1.95 TWh | 1.28 TWh | 670 GWh |
| 2019 | 38.0 TWh | 26.4 TWh | 2.18 TWh | 1.29 TWh | 710 GWh |
| 2020 | 37.9 TWh | 24.0 TWh | 2.60 TWh | 1.25 TWh | 810 GWh |
| 2021 | 37.0 TWh | 19.4 TWh | 2.84 TWh | 1.22 TWh | 960 GWh |
| 2022 | 29.9 TWh | 24.2 TWh | 3.86 TWh | 1.21 TWh | 990 GWh |
| 2023 | 37.4 TWh | 24.4 TWh | 4.62 TWh | 1.16 TWh | 1.04 TWh |
| 2024 | 44.9 TWh | 24.0 TWh | 5.66 TWh | 1.22 TWh | 1.04 TWh |
| 2025 | 34.0 TWh | 19.4 TWh | 7.89 TWh | 1.23 TWh | 1.04 TWh |
| Year | Generation | Demand | Carbon intensity |
|---|---|---|---|
| 2025 | 65.0 TWh | 65.1 TWh | 39 gCO2/kWh |
| 2024 | 78.4 TWh | 64.0 TWh | 35 gCO2/kWh |
| 2023 | 70.1 TWh | 63.7 TWh | 35 gCO2/kWh |
| 2022 | 61.7 TWh | 64.9 TWh | 37 gCO2/kWh |
| 2021 | 63.1 TWh | 65.5 TWh | 39 gCO2/kWh |
| 2020 | 68.5 TWh | 62.9 TWh | 37 gCO2/kWh |
| 2019 | 70.6 TWh | 64.3 TWh | 35 gCO2/kWh |
| 2018 | 66.3 TWh | 64.7 TWh | 36 gCO2/kWh |
| 2017 | 60.2 TWh | 65.7 TWh | 40 gCO2/kWh |
| 2016 | 61.1 TWh | 65.0 TWh | 40 gCO2/kWh |
Full year by year history for Switzerland, 2000 to 2025
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.
Month by Month
Ember monthly statistics through May 2026| Month | Demand | Generation |
|---|---|---|
| 2024-06 | 5.47 TWh | 7.23 TWh |
| 2024-07 | 5.42 TWh | 9.32 TWh |
| 2024-08 | 5.34 TWh | 8.12 TWh |
| 2024-09 | 5.34 TWh | 6.43 TWh |
| 2024-10 | 5.59 TWh | 6.82 TWh |
| 2024-11 | 6.15 TWh | 6.03 TWh |
| 2024-12 | 6.54 TWh | 5.78 TWh |
| 2025-01 | 6.61 TWh | 6.00 TWh |
| 2025-02 | 5.91 TWh | 5.22 TWh |
| 2025-03 | 6.09 TWh | 5.00 TWh |
| 2025-04 | 5.21 TWh | 5.50 TWh |
| 2025-05 | 5.49 TWh | 6.01 TWh |
| 2025-06 | 5.63 TWh | 7.03 TWh |
| 2025-07 | 5.60 TWh | 6.38 TWh |
| 2025-08 | 5.52 TWh | 6.03 TWh |
| 2025-09 | 5.49 TWh | 5.72 TWh |
| 2025-10 | 5.80 TWh | 5.16 TWh |
| 2025-11 | 6.20 TWh | 4.96 TWh |
| 2025-12 | 6.63 TWh | 4.69 TWh |
| 2026-01 | 6.96 TWh | 4.91 TWh |
| 2026-02 | 5.99 TWh | 4.37 TWh |
| 2026-03 | 6.27 TWh | 5.07 TWh |
| 2026-04 | 5.61 TWh | 5.98 TWh |
| 2026-05 | 5.36 TWh | 5.70 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of May 2026.
Switzerland Electricity FAQ
What is the main source of electricity in Switzerland?
Hydro was the largest source of electricity in Switzerland in 2025, supplying 52.3% of generation, followed by nuclear (29.9%) and solar (12.1%). Figures are Ember annual statistics.
How much electricity does Switzerland use?
Switzerland used 65.1 TWh of electricity in 2025, about 7.26 MWh per person.
How clean is Switzerland's electricity?
Generating a kilowatt hour of electricity in Switzerland emitted 39 gCO2/kWh in 2025, and low carbon sources supplied 97.7% of generation. That is 91% below the world average of 459 gCO2/kWh.
Does Switzerland import electricity?
Yes. Switzerland imported 60.0 GWh more electricity than it exported in 2025.