Summary

Switzerland's final energy consumption rose by 0.2% to 777,870 terajoules in 2025. Main drivers were colder weather conditions (+5.6% heating degree days) and increased aviation fuel sales (+3.2%). Electricity consumption grew by 0.8% to 58.0 TWh, while domestic electricity production fell by 16.7% to 67.5 TWh. Renewable energy sources reached a share of 27.5% of total consumption.

Persons

  • Federal Office of Energy (BFE) – Statistics and Data Publication

Topics

  • Energy Statistics 2025
  • Renewable Energies
  • Electricity Supply
  • Energy Consumption Switzerland

Clarus Lead

The energy transition is showing progress, yet overall consumption remains stable: While renewable energy sources expand their share to 27.5% and heat pumps increase by 8.4%, the data reveal a structural challenge. The 16.7% reduction in domestic electricity production coupled with growing electricity consumption signals supply tensions that could be exacerbated by planned nuclear power plant shutdowns. Particularly critical: aviation fuel sales are approaching record levels from 2018, jeopardizing the transport sector's decarbonization targets.

Detailed Summary

Switzerland's 2025 energy statistics document a differentiated picture of the energy transition. In fuels, a two-tier effect is evident: while gasoline and diesel declined overall by 1.0% (gasoline +0.6%, diesel -2.3%), aviation fuels surged by +3.2% and are approaching the 2018 historical peak. Biogenic fuels increased by 9.5% and exceeded the 5% mark (5.3%) in the gasoline-diesel mix for the first time – a development that is relativized by aviation sector dynamics.

In heat generation, the shift to renewable sources is accelerating: heat pumps rose by 8.4%, district heating by 6.5%, with the renewable share of district heating climbing to 44.7%. Extra-light heating oil and natural gas fell by 4.3% and 1.1% respectively. However, these three energy sources still account for roughly half of total consumption. Coal and petroleum coke collapsed by 21.1%; their share remains marginal (<2%).

The electricity sector reveals critical tensions: electricity production fell 16.7% to 67.5 TWh, while consumption rose by 0.8% to 58.0 TWh. Hydropower dominated with 55.5% (run-of-river power plants 24.2%, storage power plants 31.3%), followed by nuclear power with 27.2%. Renewable electricity sources reached 17.3%, with photovoltaics alone accounting for 11.8% – growth that does not, however, compensate for the production deficit. Detailed analyses will follow in October 2026.

Key Findings

  • Final energy consumption 2025: +0.2% to 777,870 TJ; growth drivers are demographic and climatic factors, not efficiency decline
  • Renewable energy sources reach 27.5% share; heat pumps and district heating show double-digit growth rates
  • Electricity production fell by 16.7% with slight consumption growth (+0.8%) – supply risk from planned nuclear power plant shutdowns
  • Aviation fuels approach 2018 record levels; biogenic fuels exceed 5% threshold for the first time

Critical Questions

  1. Data Quality: To what extent do the still-pending detailed figures on housing stock (October 2026) affect the validity of the current overall analysis?

  2. Causality of Electricity Production: Is the 16.7% decline in electricity production primarily due to hydropower deficit (2025 drought) or nuclear power plant maintenance, and how will this be compensated in 2026?

  3. Conflicts of Interest in Aviation Fuels: What measures does the federal government plan to address the discrepancy between aviation fuel growth (+3.2%) and Net Zero 2050 targets?

  4. Feasibility of Renewable Heat Sources: Is the current heat pump penetration rate (8.4% increase) sufficient to substantially reduce heating oil and gas dependency (50% of consumption) by 2035?

  5. Alternative Scenarios: How do forecasts change if planned nuclear power plant shutdowns occur earlier than assumed?

  6. Biogas Statistics: Why is biogas fed into the natural gas network recorded statistically under "gas" rather than separately – does this distort the transparency of renewable energy quotas?

Sources

Primary Source: Federal Office of Energy (BFE) – Press Release Energy Statistics 2025 – https://www.news.admin.ch/de/newnsb/YQtEZcK-D9fQ

Supplementary Sources:

  • Overall Energy Statistics 2025 (available from 10 July 2026) – www.bfe.admin.ch/bfe/de/home/versorgung/statistik-und-geodaten/energiestatistiken/gesamtenergiestatistik.html
  • Electricity Statistics 2025 (available from 24 July 2026) – www.bfe.admin.ch/bfe/de/home/versorgung/statistik-und-geodaten/energiestatistiken/elektrizitaetsstatistik.html

Verification Status: ✓ 18.06.2026

This text was created with the support of an AI model. Editorial responsibility: clarus.news | Fact-check: 18.06.2026