References to technologies were identified based on the taxonomy developed by the UN Climate Technology Centre and Network. For more information about our approach, please see our methodology.
The taxonomy of technologies is based on UN Climate Technology Centre and Network’s taxonomy of climate technologies. This source was chosen because the UN CTCN is an internationally recognised authority on climate-related technologies.
We divided the CTCN taxonomy into two distinct taxonomies for Adaptation Technologies and Mitigation Technologies, based on the distinction included in the CTCN taxonomy. Some technology categories sit across both adaptation and mitigation. For example, the category ‘Buildings and homes technologies’ includes heat pumps, which relate to mitigation, and disaster-resilient buildings, which relates to adaptation.
Some of the technologies included in the CTCN taxonomy were excluded. This was done either because the technologies were evaluated as not being sufficiently climate-specific, or because they represented overlap with another taxonomy (for example, policy instruments). For example, we consider Building standards and codes as a policy instrument and not a technology, and this was therefore not included in our final taxonomies. *The taxonomies were also adapted to match the 3 hierarchies required for the tool and additions were made to capture acronyms, synonyms, and other grammatical expressions of the concepts within the taxonomy. Learn more about our taxonomy methodology.
- Removed the term carbon transport for the category Carbon capture and storage
- Removed the term carbon transportation for the category Carbon capture and storage
- Removed the term CO2 transport for the category Carbon capture and storage
- Removed the term CO2 transportation for the category Carbon capture and storage
- Removed the term carbon dioxide transport for the category Carbon capture and storage
- Removed the term carbon dioxide transportation for the category Carbon capture and storage
- Created the category Clean technologies (general)
- Created the term clean technologies for the category Clean technologies (general)
- Merged the categories Alternative water source technologies, Water efficiency and demand management technologies, Water treatment technologies and Water conservation technologies to create the category Water management and conservation technologies
- Merged the categories Terrestrial ecosystem management technologies, Forest management technologies, Livestock management technologies, Soil management technologies and Crop resilience and productivity technologies to create the category Agriculture and land management technologies
- Merged the categories Energy distribution technologies, Power plant efficiency technologies, District heating and cooling and Energy storage technologies to create the category Energy and power technologies
- Merged the categories Land transport technologies, Vehicle and fuel technologies, Inland water and maritime technologies, Resilient transport systems and Aviation technologies to create the category Transport technologies
- Merged the categories Appliances and equipment, Buildings technologies, Integrated planning technologies and Accommodation technologies to create the category Buildings and homes technologies
- Merged the categories Solid waste technologies, Wastewater technologies and Recycling to create the category Waste and recycling technologies
- Merged the categories Mining and production technologies and Manufacturing technologies to create the category Industrial technologies
- Merged the categories Early warning systems, Hazard mapping technologies, Monitoring systems, Riverine flood protection technologies, Coastal protection technologies and Urban storm water management technologies to create the category Hazard management technologies
- Added the term CCUS to the category Carbon capture and storage
- Added the term CCS to the category Carbon capture and storage
- Added the term CCU to the category Carbon capture and storage
- Added the term CCUC to the category Carbon capture and storage
- Added the term BECCS to the category Carbon capture and storage
- Added the term clean cooking to the category Buildings and homes technologies
- Added the term energy efficiency to the category Energy and power technologies
- Added the term energy-efficient to the category Energy and power technologies
- Added the term energy efficient to the category Energy and power technologies
- Divided the concept Technologies into the separate concepts Technologies (Mitigation) and Technologies (Adaptation)
- Added the term efficient fuelwood cookstove to the category Buildings and homes technologies
- Added the following terms to the category Clean technologies:
- low-carbon technologies
- zero-carbon technologies
- low-carbon tech
- zero-carbon tech
- low-emission tech
- zero-emission tech
- Added the following terms to the category Transport technologies:
- electric bikes
- electric bicycles
- e-bikes
- electric trains
- fuel-cell vehicles
- zero-emission freight
- fuel-efficient vehicles
- Added the following term to the category Energy and power technologies
- smart energy management
- Added the following terms to the category Industrial technologies
- low-carbon smelting
- zero-carbon smelting
- low-carbon manufacturing
- electric steel
- Added the following term to the category Hazard mapping technologies:
- GPS
- fixed bug in rule for Technologies (Mitigation)