What does it mean, when the production volume of an activity is zero?
Some datasets can have a production volume of 0. That means that the reported production volume for the given region is indeed 0, and the activity does not take place. Such datasets may eventually simply be removed from the database, since they describe activities that no longer happen. However, sometimes they remain in the database, for example for legacy purposes (some user projects may depend on them as inputs). Other examples might be datasets for future technologies.
Without a production volume, these datasets will not be included in any market datasets, and they will not be used within other parts of the ecoinvent database unless explicitly selected by the dataset creator, for reasons specified in the documentation.
What does the version number of the database mean?
What is an activity in ecoinvent version 3?
What are global background activities and where do they come from?
What is a market and how is it created?
In which situations are direct activity links used?
Why is the reference product of the treatment activities negative?
Why is the amount of the reference product changing?
What is linking and what happens during the linking process? Attributional System Model
What is linking and what happens during the linking process? Consequential System Model
What is allocation at the point of substitution (APOS)?
What do the shortcuts, such as CH, RER, RoW and GLO mean?
The ecoinvent database in Environmental Product Declarations (EPDs)
Why is the “Allocation, default” system model not available in the ecoquery anymore?
How do I calculate the amount of transport in the market?
What is the Rest-of-the-World (RoW) and how is it calculated?
Why is the LCIA score of a certain product negative?
What are the UUID numbers and how do they work?
How to interpret the uncertainty fields in ecoinvent?
What are the LCIA methods ecoinvent is publishing the impact assessment results for?
APOS: why do I have carrots on my recycled aluminium?