What is TRL?

TRL stands for Technology Readiness Level. It is a method used to assess the maturity of a particular technology. TRL ranges from 1 to 9, with each level indicating a stage of development:

• TRL 1: Basic principles observed
• TRL 2: Technology concept formulated
• TRL 3: Experimental proof of concept
• TRL 4: Technology validated in lab
• TRL 5: Technology validated in relevant environment
• TRL 6: Technology demonstrated in relevant environment
• TRL 7: System prototype demonstration in operational environment
• TRL 8: System complete and qualified
• TRL 9: Actual system proven in operational environment

Most Horizon Europe calls for proposals require a certain TRL for the beginning of the project and its end. This scale helps organizations better understand whether they fit with the programme and call eligibility criteria. For more information: TRL