Source Registry

Upstream Source Registry
The Cleantech Taxonomy v1.0 is built on four openly available institutional sources, each serving a different layer of the classification. This page tracks their versions, update cycles, and access points.
#
Source
Role
Version
License
Update Cycle
Wiki Book
01
CPI Global Landscape of Climate Finance
Primary sector structure (9 sectors, mitigation + adaptation)
GLCF 2025 (July 2025)
CC BY-NC-SA 4.0
Annual (July)
Book 01 (id=878)
02
EU Taxonomy for Sustainable Activities
Regulatory & finance eligibility crosswalk
2026 draft revision (March 2026)
EU law (open)
Delegated acts (irregular)
Book 02 (id=879)
03
IEA Energy Technology Classification System
Energy sector depth — technology-level classification
ETP 2025
Open (IEA)
Annual (ETP cycle)
Book 03 (id=880)
04
Climate Bonds Initiative Taxonomy
Bond/instrument eligibility — 50+ national taxonomies
Current (ongoing updates)
Open
Sector criteria updated rolling
Book 04 (id=881)
EXT
CTH Extensions
LATAM gaps — NbS, informal economy, EUDR supply chain
v1.0 (May 2026)
CC BY 4.0
CTH-maintained
Book 07 (id=884)
Monitoring
The 
origo-taxonomy-watcher.py script runs monthly on the CTH VPS (systemd timer: 
origo-watcher.timer) and checks all upstream URLs for content changes. Watch Reports are posted automatically to this book.
Access Points
CPI: GLCF 2025 publication page
EU Taxonomy: EU Taxonomy Compass
IEA: ETP Clean Energy Technology Guide
CBI: CBI Taxonomy page
Version History
Date
Source
Event
2026-05-26
All
Cleantech Taxonomy v1.0 baseline — all 4 sources indexed