City Inventory Reporting and Information System (CIRIS)

The City Inventory Reporting and Information System (CIRIS) is an accessible, easy-to-use and flexible Excel-based tool for managing and reporting city greenhouse gas inventory data. Based on the Global Protocol for Community-scale Greenhouse Gas Emission Inventories (GPC) standard, the tool facilitates transparent calculation and reporting of emissions for all sectors.

CIRIS is free to download and use, and can be directly uploaded to public reporting platforms CDP and Carbonn.

The tool includes five calculators to facilitate calculation of emissions from typically challenging sources:

  • Fugitive losses from gas distribution
  • Solid waste landfill
  • Biological treatment of waste
  • Waste incineration
  • Wastewater

A comprehensive emission factor database is also available to support inventory development. This contains over 2000 emission factors including IPCC default emission factors as well as country and region specific emission factors in a range of different units.

CIRIS has been designed to be compatible with the CURB scenario planning tool. Outputs from CIRIS can easily be uploaded into CURB.