The Library#
Circa’s Library gives practitioners access to more than 26 million datapoints.
The Library is free to search, and datapoints are licensed on a usage basis. All metadata is free to view before licensing.
Data Sources#
Circa’s Library contains data published from leading industry sources and partners

Data Types#
The library contains four types of data:
- Processes
- Intermediate Materials
- Elementary Materials
- Graphs
Processes#
Process Boundary Types#
- Aggregated: Unit Process that includes the cumulative LCI of the upstream Processes.
- Disaggregated: Unit Process that includes only the local LCI, no cumulative exchanges from upstream Processes are included.
- Partially Aggregated: The named activity, with each input automatically linked to an Aggregated upstream supplier Process.
Characterization Methods#
Circa offers over 6 characterization methods, if there is a characterization method you would like to see, let our team know at contact@circa.ai
- EF v3.1 no LT
- IPCC 2021 no LT
- ReCiPe 2016 v1.03, midpoint (H) no LT
- CML.v 4.8 2016 no LT
- TRACI v2.1
- EN15804