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Built 2026-11-05 (5 November 2026)

Portugal vs Switzerland: Electricity Compared

Portugal generated 51.1 TWh of electricity in 2025 and Switzerland 65.0 TWh, according to Ember. Hydro was the largest source in both, at 29.7% in Portugal and 52.3% in Switzerland. Each kWh generated emitted 128 gCO2/kWh in Portugal and 39 gCO2/kWh in Switzerland. These are Ember annual statistics for 2025, compiled from national sources; they are not real time.

Who is bigger and who is cleaner? Switzerland is the bigger electricity producer, generating 1.3 times as much as Portugal in 2025 (65.0 TWh against 51.1 TWh). Switzerland has the cleaner electricity by carbon intensity, at 39 gCO2/kWh against 128 gCO2/kWh in Portugal in 2025.

Why this comparison: similar electricity demand on the same continent.

Open this comparison in the interactive tool to add more countries or change the metric.

Key Facts

  • Nuclear supplied 29.9% of Switzerland's electricity in 2025, against none in Portugal.
  • Portugal's electricity was 3.3 times as carbon intensive as Switzerland's in 2025, at 128 gCO2/kWh against 39 gCO2/kWh.
  • Carbon intensity rose 7% in Switzerland between 2020 and 2025, while it fell 49% in Portugal.
  • Low carbon sources supplied 80.9% of Portugal's electricity in 2025 and 97.7% of Switzerland's.
  • Electricity demand in 2025 was 60.4 TWh in Portugal and 65.2 TWh in Switzerland.

Key Figures, 2025

Ember annual statistics
Measure Portugal Switzerland
Total generation51.1 TWh65.0 TWh
Electricity demand60.4 TWh65.2 TWh
Demand per person5.80 MWh7.26 MWh
Carbon intensity128 gCO2/kWh39 gCO2/kWh
Power sector emissions6.53 MtCO22.55 MtCO2
Low carbon share80.9%97.7%
Largest sourceHydro 29.7%Hydro 52.3%

Generation Mix, 2025

Share of generation
Source Portugal Switzerland
Hydro 29.7% 52.3%
Nuclear 0.0% 29.9%
Wind 26.8% 0.2%
Solar 17.3% 12.1%
Gas 16.5% 0.4%
Bioenergy 6.6% 1.7%
Other fossil 2.6% 1.9%
Other renewables 0.4% 1.5%

Carbon Intensity, 1990 to 2025

Ember annual statistics
Carbon intensity of electricity in Portugal and Switzerland, 1990 to 2025 Carbon intensity of electricity generated in Portugal and Switzerland each year from 1990 to 2025, in gCO2/kWh. In 2025 it was 128 gCO2/kWh in Portugal and 39 gCO2/kWh in Switzerland. 0 200 400 600 800 19901995200020052010201520202025
Carbon intensity of electricity generated in Portugal and Switzerland each year from 1990 to 2025, in gCO2/kWh. In 2025 it was 128 gCO2/kWh in Portugal and 39 gCO2/kWh in Switzerland.
Annual statistics through 2025, gCO2/kWh
Carbon intensity of electricity in Portugal and Switzerland, 1990 to 2025
YearPortugalSwitzerland
1990540 gCO2/kWhn/a
1991553 gCO2/kWhn/a
1992650 gCO2/kWhn/a
1993582 gCO2/kWhn/a
1994540 gCO2/kWhn/a
1995607 gCO2/kWhn/a
1996482 gCO2/kWhn/a
1997513 gCO2/kWhn/a
1998515 gCO2/kWhn/a
1999607 gCO2/kWhn/a
2000546 gCO2/kWh34 gCO2/kWh
2001507 gCO2/kWh33 gCO2/kWh
2002593 gCO2/kWh34 gCO2/kWh
2003485 gCO2/kWh35 gCO2/kWh
2004541 gCO2/kWh35 gCO2/kWh
2005596 gCO2/kWh38 gCO2/kWh
2006504 gCO2/kWh36 gCO2/kWh
2007472 gCO2/kWh34 gCO2/kWh
2008472 gCO2/kWh34 gCO2/kWh
2009453 gCO2/kWh34 gCO2/kWh
2010317 gCO2/kWh36 gCO2/kWh
2011375 gCO2/kWh36 gCO2/kWh
2012441 gCO2/kWh36 gCO2/kWh
2013340 gCO2/kWh36 gCO2/kWh
2014326 gCO2/kWh34 gCO2/kWh
2015414 gCO2/kWh36 gCO2/kWh
2016344 gCO2/kWh40 gCO2/kWh
2017434 gCO2/kWh40 gCO2/kWh
2018359 gCO2/kWh36 gCO2/kWh
2019301 gCO2/kWh35 gCO2/kWh
2020248 gCO2/kWh37 gCO2/kWh
2021211 gCO2/kWh39 gCO2/kWh
2022225 gCO2/kWh37 gCO2/kWh
2023158 gCO2/kWh35 gCO2/kWh
2024111 gCO2/kWh35 gCO2/kWh
2025128 gCO2/kWh39 gCO2/kWh

Demand per Person, 1990 to 2025

Ember annual statistics
Electricity demand per person in Portugal and Switzerland, 1990 to 2025 Electricity demand per person in Portugal and Switzerland each year from 1990 to 2025, in MWh. In 2025 it was 5.80 MWh in Portugal and 7.26 MWh in Switzerland. 0.0 2.5 5.0 7.5 10.0 19901995200020052010201520202025
Electricity demand per person in Portugal and Switzerland each year from 1990 to 2025, in MWh. In 2025 it was 5.80 MWh in Portugal and 7.26 MWh in Switzerland.
Annual statistics through 2025, MWh
Electricity demand per person in Portugal and Switzerland, 1990 to 2025
YearPortugalSwitzerland
1990n/an/a
1991n/an/a
1992n/an/a
1993n/an/a
1994n/an/a
1995n/an/a
1996n/an/a
1997n/an/a
1998n/an/a
1999n/an/a
20004.29 MWh8.22 MWh
20014.47 MWh8.39 MWh
20024.56 MWh8.37 MWh
20034.70 MWh8.49 MWh
20044.88 MWh8.56 MWh
20055.03 MWh8.63 MWh
20065.12 MWh8.67 MWh
20075.14 MWh8.53 MWh
20085.19 MWh8.63 MWh
20095.12 MWh8.34 MWh
20105.30 MWh8.51 MWh
20115.17 MWh8.27 MWh
20125.07 MWh8.24 MWh
20135.08 MWh8.19 MWh
20145.06 MWh7.89 MWh
20155.15 MWh7.85 MWh
20165.22 MWh7.76 MWh
20175.32 MWh7.77 MWh
20185.39 MWh7.60 MWh
20195.32 MWh7.50 MWh
20205.10 MWh7.28 MWh
20215.19 MWh7.52 MWh
20225.34 MWh7.38 MWh
20235.40 MWh7.18 MWh
20245.54 MWh7.17 MWh
20255.80 MWh7.26 MWh

Portugal history · Switzerland history

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.

Cite this page
APA 7

World Power Monitor. (2025). Portugal vs Switzerland: Electricity Compared. https://worldpowermonitor.com/compare/portugal-vs-switzerland/

Plain text

World Power Monitor. Portugal vs Switzerland: Electricity Compared. Data as of 2025. Data from Ember. https://worldpowermonitor.com/compare/portugal-vs-switzerland/

BibTeX 
@misc{wpm_compare_portugal_vs_switzerland_2025,
  title = {{Portugal vs Switzerland: Electricity Compared}},
  author = {{World Power Monitor}},
  year = {2025},
  note = {Data as of 2025. Data from Ember.},
  url = {https://worldpowermonitor.com/compare/portugal-vs-switzerland/}
}

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