Book 03: IEA ETCS 2025 — Energy Depth
IEA Energy Technology Classification System, 2025 update. Added: critical minerals, industrial electrification. Open/public data. Deep coverage of energy technologies.
Renewables
Solar, wind, hydro, geothermal, ocean, bioenergy
Solar PV & Concentrated Solar Power
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-001 iea_categoryen...
Wind (onshore & offshore)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-002 iea_categoryen...
Hydropower, Tidal & Wave
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-003 iea_categoryen...
Geothermal
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-004 iea_categoryen...
Bioenergy & Synthetic Fuels
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-005 iea_categoryen...
Nuclear (incl. SMRs)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-006 iea_categoryen...
Grids & Storage
Transmission, distribution, battery and other storage
Batteries & Energy Storage
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-007 iea_categoryen...
Smart Grids & Digitalization
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-CRS-001 iea_categorycr...
Electricity Transmission & Distribution
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-SUP-008 iea_categoryen...
Efficiency
Buildings, appliances, industry efficiency
Buildings Energy Efficiency
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-END-001 iea_categoryen...
Transport Efficiency
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-END-002 iea_categoryen...
Industrial Energy Efficiency
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-END-003 iea_categoryen...
Industry & Hydrogen
Industrial decarbonisation, clean hydrogen production
Green Hydrogen Production (electrolysers)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-CRS-002 iea_categorycr...
Industrial Decarbonization (steel, cement, chemicals)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-END-004 iea_categoryen...
Carbon Capture, Utilisation & Storage (CCUS)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-CRS-003 iea_categorycr...
Critical Minerals
Minerals essential for clean energy transition (2025 addition)
Lithium, Cobalt & Nickel (batteries)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-MIN-001 iea_categorycr...
Copper & Aluminium (grids & EVs)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-MIN-002 iea_categorycr...
Rare Earths (wind turbines, EVs)
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-MIN-003 iea_categorycr...
LATAM Mining & Critical Minerals Supply
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-MIN-004 iea_categorycr...
Industrial Electrification
Electrification of industrial processes (2025 addition)
CO₂ Transport & Storage Infrastructure
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-CRS-004 iea_categorycr...
Direct Electrification of Industry
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-END-005 iea_categoryen...
Hydrogen in Industrial Processes
Source Metadata FieldValue sourceiea source_versionETCS 2025 source_idIEA-CRS-005 iea_categorycr...