Welcome to the Swiss Emissions Trading Registry

Important information

Due to system maintenance operations at the International Transaction Log of the UNFCCC, the Swiss Emissions Trading Registry is not available for transactions with Kyoto units on 18 August 2022, from 18:00 to 21:00 (local time).

For installation operators, the deadline for the surrender of 2021 emission allowances is postponed to August 31, 2022 (art. 146k of the CO2 Ordinance).

Due to system maintenance operations, the Swiss Emissions Trading Registry is not available on 21 September 2022, 8:00 to 17:00 (local time).

Opening hours (Tel.: +41 58 462 05 66, Email: emissionsregistry@bafu.admin.ch)

Working days EHR Helpdesk: Monday to Friday, from 9am to 12pm (local time), except official holidays and closures of the Registry helpdesk
Transactions to be executed on an official holiday or on a working day when the EHR Helpdesk is closed for other reasons will be executed on the first working day thereafter.
The Registry helpdesk is closed on the following dates: 20-21 September / 26 December 2022


  • The next auction of allowances for installations (CHU) for the year 2022 will take place in the second half of 2022. The date and quantity will be published in due course.
  • The auction of allowances for aircrafts (CHUA) for the year 2022 in the amount of 157,300 CHUA will take place from 5 September 2022, 12:00 to 7 September 2022, 17:00 (local time).

Pursuant to Article 48 paragraph 2 letter b of the CO2 Ordinance, the FOEN may cancel an auction without making an award if the clearing price in the auction period differs significantly from the applicable price on the secondary market in the EU.

Calendar for the execution of transfers between the registries


Further information is available in the frequently asked questions.