Most renewable electricity came from hydropower plants (68%), followed by photovoltaics (11%), wind and biomass, according to official figures released on Monday.
The proportion of electricity generated by so-called new renewable energy sources (sun, wind, biomass and smaller hydropower projects) increased from 10.3% in 2020 to 11.5% in 2021.
Most renewable energy was produced within Switzerland: for example, 76% of all hydropower and 79% of new renewables.
The proportion of electricity originating from coal powered sources remained largely the same (1.87% in 2021 compared to 1.8% in 2020).
The amount of electricity produced by domestic nuclear power plants fell from 19.9% in 2020 to 18.5% in 2021.
Since 2005, Swiss electricity suppliers have been legally obliged to disclose the origin and composition of electricity they supply.
A similar certificate of origin system has also been introduced for energy providers situated in neighbouring countries. This means that, from 2021, no electricity from unknown sources – so-called grey electricity – is permitted in Switzerland.
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Swiss electricity getting greener
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Switzerland’s energy consumption is getting greener, with 68% of it coming from renewable sources in 2017, compared with 62% the previous year.
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The nuclear disaster in Japan last month has reopened the debate on the use of alternative energies, and Switzerland – which has five reactors – is now considering the possibility of abandoning atomic energy. The Fukushima Dai-ichi nuclear power plant has been leaking radiation after a March 11 earthquake and tsunami wrecked its power and…
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Solar panels and wind turbines are crucial in Switzerland's transition to greener energy – and so is artificial intelligence.
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If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.