The law sets out the framework for air-quality protection in the Czech Republic: it defines what counts as “air pollution,” establishes permissible levels of pollution (emission and immission limits), and regulates sources of pollution (both stationary — e.g. industrial plants, boilers — and mobile — e.g. vehicles).
The law:
- Sets quality and emission-reduction requirements for fuels placed on the Czech market, including biofuels blended into petrol and diesel.
- Implements EU obligations for fuel suppliers to lower lifecycle GHG emissions from transport fuels, partly through the increased use of sustainable biofuels.
- Requires that any biofuels counted toward these obligations must meet EU sustainability criteria (e.g., origin of biomass, land-use rules, and minimum GHG savings).
- Supports the promotion of renewable fuels, including biofuels, as part of national air-quality and climate-mitigation policies, while ensuring they do not negatively impact air quality.
This law was amended 20 times since it was enacted with the last amendment brought by Law 42/2025.
