LCIA methods

LCIA (Life Cycle Impact Assessment) methods are needed for the impact calculation. openLCA has no default LCIA methods in the application (different from units, for example), so that the LCIA methods need either be created or imported from other sources. Nowadays many databases contain LCIA methods.

A typical LCIA method consists mainly of different categories with units, and of an assignment of these categories to flows. These assignments can be found on the LCIA factors sheet, where they can be edited.