Executive Summary

Electricity consumption by Swiss data centers totaled 2.1 TWh in 2024, corresponding to 3.6 percent of national total consumption. A study commissioned by the Federal Office of Energy (BFE) predicts an increase to 2.5 to 3.2 TWh by 2030. Since 2019, consumption has risen by nearly 20 percent, with large commercial data centers (44% of consumption) increasing significantly, while enterprise-owned data centers (56% of consumption) stagnate or decline. The remaining efficiency potential is estimated at approximately 0.8 TWh.

Persons

Topics

  • Energy economics and electricity consumption
  • Data centers and digital infrastructure
  • Energy efficiency and climate policy
  • Artificial intelligence and computing capacity

Clarus Lead

Switzerland faces a critical decision regarding digital infrastructure: while electricity consumption by data centers is growing moderately, demand from commercial facilities could more than double by 2030. A scenario with maximum capacity utilization would drive the share to 6.0 percent of Swiss electricity consumption – a doubling from today. At the same time, Switzerland lacks specialized infrastructure for training large language models (LLM), while companies use these capacities abroad. The BFE plans enhanced monitoring, but the question remains: How does Switzerland balance digitalization goals with energy supply?

Detailed Summary

The current survey shows a shift in Switzerland's data center landscape. While large commercial facilities are massively expanding their capacities, traditional enterprise-owned server rooms benefit from efficiency gains and cloud migrations – a trend that dampens overall growth. Comparison with 2019 is complicated by methodological changes: the current study excludes server rooms to simplify the survey. With an identical system boundary, the increase from 2019–2024 was approximately 18 percent (averaging 3.4% annually).

The greatest efficiency potential lies in IT equipment (somewhat higher than in building infrastructure). Notably absent is LLM training infrastructure: only ETH Zurich operates an AI supercomputer at the Swiss National Supercomputing Centre (CSCS) in Lugano. Swiss companies and individuals use pre-trained models from abroad – a sign of dependence on strategic technologies. Existing large data centers focus on cloud applications, not on the energy-intensive training of language models.

The maximum scenario by 2030 – with electricity consumption of 3.5 TWh – would increase the share of data centers in Swiss electricity consumption to 6.0 percent. This underscores that digitalization and energy transition are increasingly in competition.

Key Findings

  • Electricity consumption by Swiss data centers has risen by nearly 20 percent since 2019; a further increase to 2.5–3.2 TWh is expected by 2030.
  • Large commercial data centers are driving growth, while enterprise-owned facilities stagnate due to cloud migration and efficiency gains.
  • Switzerland lacks specialized infrastructure for training large language models (LLM) and is thus dependent on foreign capacity.
  • The remaining efficiency potential of approximately 0.8 TWh could partially offset the increase in consumption.

Critical Questions

  1. Data Quality and Methodology: How comparable are the 2024 and 2019 figures if the current study excludes server rooms? Could the methodological change have obscured the actual consumption trend?

  2. Scenario Robustness: On what assumptions is the "maximum" scenario with 3.5 TWh based? How likely is this scenario, and what uncertainty margins apply?

  3. LLM Infrastructure and Site Selection: Why has Switzerland not yet built data centers for LLM training? Are regulatory, financial, or infrastructural barriers decisive?

  4. Efficiency Potential and Implementation: The estimated 0.8 TWh efficiency potential is substantial – what concrete measures does the BFE plan to realize this potential? What incentives or obligations could motivate operators?

  5. Electricity Supply Security: How is the projected growth aligned with Switzerland's energy transition goals (nuclear phase-out, expansion of renewable energy)?

  6. International Dependence: What strategic risks arise from the lack of LLM training capacity, and does Switzerland plan to close this gap?

Source Index

Primary Source: Federal Office of Energy (BFE) – Study "Data Centers in Switzerland – Electricity Consumption and Efficiency Potential" (07.05.2026) https://www.news.admin.ch/de/newnsb/GV-_d7OgIlqjfQDGZqbkN

Verification Status: ✓ 07.05.2026

This text was created with the assistance of an AI model. Editorial Responsibility: clarus.news | Fact-Check: 07.05.2026