Slight rise in energy consumption in 2025
In 2025 Switzerland’s final energy consumption increased by 0.2% year-on-year to 777,870 tera-joules (TJ). The main reasons for this were the colder weather compared to the previous year and the increase in aviation fuel sales.
The number of heating degree days, an important indicator of energy consumption for heating purposes, increased by 5.6% year-on-year. Other factors that determine the long-term growth trend in energy consumption also increased: the permanent resident population (+0.9%), gross domestic product (+1.3%), the motor vehicle stock (+0.9%) and the housing stock (increase; no detailed figures yet available). The annual retrospective analyses will provide further information on the factors influencing developments in energy consumption (publication in October 2026).
Increase in fuel consumption
Sales of aviation fuel rose by 3.2% over the previous year and are now just below the peak consumption level recorded in 2018. Petrol and diesel consumption fell by 1.0% overall (petrol: +0.6%; diesel: -2.3%). Fossil fuels accounted for about one third (34.9%) of total final energy consumption. There was a year-on-year rise in the consumption of biogenic fuels (+9.5%); their share of total petrol and diesel sales also increased, exceeding 5% (5.3%) for the first time.
Slight rise in electricity and natural gas consumption; drop in use of extra-light heating oil and natural gas
Electricity consumption rose by 0.8%. In contrast, there was a year-on-year drop in the consumption of extra-light heating oil (-4.3%) and of natural gas (-1.1%). These three energy sources account for approximately half of final energy consumption. The use of industrial waste for energy purposes rose by 2.1%. Meanwhile, consumption of coal and petroleum coke fell by 21.1% overall, whilst consumption of medium and heavy fuel oil remained at zero. The share of these four energy sources in total final energy consumption is very low (<2%).
Increase in consumption of renewable energies
Renewable energy sources are increasingly being used instead of fossil fuels for heating. For example, the use of ambient heat with heat pumps increased by 8.4%, and district heating use by +6.5%. The renewable share of district heating rose again, reaching 44.7% in 2025. In contrast, the consumption of solar heat and wood for energy fell slightly (-1.5% and -0.5% respectively). The direct use of biogas rose by 0.5%. When the biogas fed into the natural gas grid (recorded under gas in the statistics) is taken into account, there was a 12.9% increase in biogas consumption. The share of renewable energy sources in total final energy consumption stood at 30.6% in 2025.
Swiss electricity balance for 2025
In 2025, Swiss electricity consumption increased by around 0.8% to 58.0 terawatt hours (TWh) compared to the previous year. Domestic electricity generation fell by around 16.7% to 67.5TWh. In 2025, 55.5% of electricity generation came from hydroelectric power stations (run-of-river plants 24.2%, pumped-storage plants 31.3%), 27.2% from nuclear power stations and 17.3% from thermal and renewable electricity generation plants (thermal generation 5.3%, wind power 0.2% and photovoltaics 11.8%).
