TIDAS · TianGong Data System
Save, check, and exchange LCA data with one shared set of rules
TIDAS defines how processes, flows, units, sources, and their references are stored in a shared data structure. This makes LCA data easier to save, check, convert, and exchange across teams and software. It does not replace professional judgement about the system boundary, allocation, data quality, or review.
What do you want to do?
Start with your current task
Choose the closest task. Open the glossary whenever an LCA term is new to you.
Learn what TIDAS is
See the problem TIDAS solves and how it relates to LCA methods, tools, and data resources.
See how data is organized
Learn how processes, flows, units, sources, and links are recorded consistently.
Check or convert data
Use TIDAS tools to check file structure and links, or convert between TIDAS and eILCD.
Look up terms and abbreviations
Find plain explanations of LCA, LCI, LCIA, functional units, system boundaries, and more.
Data and guidance
Find data and put it to use
Explore public data, consult product category rules and platform guides, or check datasets available through the ILCD node.
TianGong LCA data catalog
Browse public process and flow records, and check their scope and licence.
TianGong LCA Documentation
Platform, modelling and data guides.
PCR documentation
Scope, reference flows, and data collection requirements per product category.
ILCD data node
Check ILCD datasets, available versions and access conditions.
New here? Understand TIDAS in two minutes
Learn what TIDAS can organize and exchange—and which LCA decisions still need professional judgement.