The CO2 Act is at the core of Swiss climate legislation and has been updated several times, including for meeting Swiss commitments under the UNFCCC.

CO2 Act

Switzerland Framework Law

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Laws and Policies

CCLW

CCLW national policies

Partial Revision of the CO2 Ordinance: Explanatory Report (2020)

CO2 Act (2011 version) - English translation

CO2 Act (2024 latest version)

Law passed

Law last amended

Entered into force

The CO2 Act has been fully revised several times since the 2000 CO2 Act. On 15 March 2024, the National Council and the Council of States agreed on a new legal text that will enter into force on 1 January 2025.&nbsp;
Article 1 of the CO2 Act states that its purpose is to implement the objectives set out in the Federal Act on Climate Protection Goals, Innovation and Strengthening Energy Security (Switzerland's climate framework law). Article 3 set outs quantified greenhouse gas emissions reduction targets: 50% reduction by 2030 (compared to 1990), and 35% on average betwen 2021 and 2030 (compared to 1990). It also states that the Federal Council may set benchmarks for individual sectors.
Other measures include: vehicle emissions limits and ETS. The Act also provides an exemption for companies for the CO2 levy, if they commit to reducing their greenhouse gases in return. They would need to inform the federal government via an annual report, and submit a decarbonisation plan within three years of the start of the reduction commitment, outlining the measures they will take to significantly reduce GHG emissions from the energy use of fossil fuels by the end of 2040. There is also q requirement to update this plan every three years. 
This Act also includes an amendment to the Unfair Competition Act, which now bans statements about climate impact that cannot be substantiated (i.e., there is an obligation to provide evidence of proof of such climate claims).

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An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

Fossil fuel is a generic term for non-renewable energy sources such as coal, fossil gas, and oil (including crude oil, and petroleum products), that can be used for electricity and heat generation. Fossil fuels are hydrocarbons formed from pressurised and heated organic material buried over millions of years.

Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

A long-lived, colourless gas, chiefly emitted from fossil fuel combustion, deforestation and cement production.

This sector involves the wholesale and retail selling of goods.

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

Tradable permits are market-based tools that grant permission for specific activities, frequently used to regulate emissions. These permits can be issued within a trading system to manage environmental impacts.

The activities of industries involved in the production, distribution, and sale of energy, including electricity, gas, and renewables.

This sector creates and distributes information and entertainment through television, radio, print, and digital platforms.

Financial support to help individuals manage the effects of unexpected events, securing their livelihoods and increasing the resilience of people and businesses to the changing climate. It’s especially vital in developing regions where everyday risks, climate-related weather extremes, or crop failures can push people into poverty. Without insurance, people may have to resort to selling assets or cutting consumption to cope with losses.

Oil is a combustible liquid fossil fuel composed mainly of hydrocarbons, occurring as crude oil and refined into petroleum products such as petrol, diesel and kerosene.

Activities that relate to the production of goods and services from forests.

The release of heat-trapping gases, primarily from human activities such as burning fossil fuels, agriculture and industry.

Slow onset events evolve gradually from incremental changes over many years or from increased frequency or intensity of recurring events. As defined in the Cancun Adaptation Framework (2010), slow onset events include risks and impacts from rising temperatures, desertification, biodiversity loss, land and forest degradation, glacial retreat, ocean acidification, sea level rise, and salinization.

A target to reduce the prevalence of a greenhouse gas over a specific time frame

Activities that involve the cultivation of crops and raising of livestock for food, fibre, and other products essential for human life and industry.

Coal is a combustible sedimentary rock formed from carbonised plant matter, rich in carbon and hydrocarbons, and occurring in several main types including hard coal and brown coal.

Either money or something of monetary value is transferred between two or more organisations, people or countries.

Activities that involve planning, designing and building infrastructure, residential, and commercial structures.

A loan is a policy instrument where funds are provided to a borrower with the expectation of repaying the principal plus interest.

Codes and standards are regulatory instruments that specify minimum standards to protect health and safety. This ranges from performance standards, which prescribe outcomes while allowing flexibility to achieve compliance, to the more prescriptive approach of technology-specific standards.

This sector involves activities to move goods and people, alongside the storage of products.

Fossil gas, commonly known as natural gas, is a fossil fuel consisting chiefly of methane with smaller amounts of other hydrocarbons and trace gases, found in underground deposits.

CO2 Act (2011 version) - English translation

Target

Policy instrument

Risk

Renewable energy

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance