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Switzerland Climate and Carbon Law (CO₂ Act)

Switzerland Climate and Carbon Law (CO₂ Act): Switzerland CO₂ Act – Climate Targets, Carbon Levy and ETS

Maílis Carrilho
Written by Maílis Carrilho
Updated on December 30th, 2025

Summary

Switzerland’s CO₂ Act is the core of national climate policy and establishes binding greenhouse gas reduction targets through a hybrid regulatory model. It combines a high carbon levy on fossil heating fuels, a Swiss Emissions Trading System linked to the EU ETS, and sector-specific obligations for buildings, transport and industry. The carbon levy creates a strong and predictable price signal, with revenues largely redistributed or reinvested in climate programmes. ETS-covered installations are generally exempt from the levy but must comply with strict monitoring and allowance surrender rules, exposing them indirectly to rising EU climate ambition. The Act also imposes fuel-compensation duties and efficiency target agreements for large emitters. While structurally stable, the law evolves through parliamentary revisions and public referendums, making political dynamics a key compliance factor.

Details

Jurisdictions
  • Switzerland
Exemptions

Legally binding.

Applies to:

Industrial installations.

Energy and fuel suppliers.

Building owners (heating systems).

Exceptions:

ETS participants are generally exempt from the carbon levy.

Some sectors benefit from compensation mechanisms.

Deep dive

2 min read
Updated Dec 30, 2025

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What’s Required

The Swiss CO₂ Act is the backbone of national climate policy, combining carbon taxation, a linked emissions trading system, and sector-specific obligations. It operates independently from the EU but is partially aligned.

Key requirements include:

  • National greenhouse gas reduction targets.

  • Carbon levy on fossil heating fuels.

  • Swiss Emissions Trading System (CH ETS), linked to the EU ETS.

  • Climate obligations for:

    • Industry,

    • Buildings,

    • Transport fuels.

Important Deadlines

  • 2030: At least 50% emissions reduction vs 1990.

  • Continuous annual compliance under tax and ETS rules.

Current Status

In force and regularly amended (including recent amendments indicated on the official Fedlex consolidation).

Penalties for Non-Compliance

  • Retroactive carbon levy payments.

  • Administrative fines.

  • Loss of exemptions or financial benefits.

Examples of Known Violations

  • Retroactive carbon levy payments imposed on building owners and operators that failed to meet heating-system or emissions-efficiency obligations.

  • Loss of levy exemptions for industrial installations that did not comply with agreed emissions or energy-efficiency targets under target agreements.

  • Penalty payments by vehicle importers for exceeding fleet-average CO₂ emission limits for new passenger cars and light commercial vehicles.

  • Non-compliance with fuel-compensation obligations, leading to corrective measures and additional financial contributions.

These cases are typically handled administratively rather than criminally, but financial exposure can be significant.

Closing Insights

The Swiss CO₂ Act enforces climate compliance primarily through price signals and withdrawal of benefits, not headline fines. This makes non-compliance economically painful but politically acceptable. Companies face their highest risk not from enforcement surprises, but from rising carbon costs and tightening targets driven by referendum-backed policy shifts. Long-term cost exposure is therefore the core strategic risk.

Resources


Maílis Carrilho
Added by:
Maílis Carrilho
Sustainability Research Analyst
Maílis Carrilho is a Sustainability Research Analyst (Intern) at Net Zero Compare, contributing research and analysis on climate tech, carbon policies, and sustainable solutions. She supports the team in developing fact-based content and insights to help companies and readers navigate the evolving sustainability landscape.
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Added on Dec 29, 2025 by Maílis Carrilho · Updated on Dec 30, 2025