What is the Technology Readiness Level?

Technology Readiness Level, or TRL, is a measure originally conceived by NASA to gauge the maturity of a technology.

Technology elements in our system can be classified by their Technology Readiness Level where TRL 1 denotes the lowest technological maturity whereas TRL 9 denotes the highest maturity. We follow the definition by the European Union that looks as follows:

  • 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

Source: https://ec.europa.eu/research/participants/data/ref/h2020/wp/2014_2015/annexes/h2020-wp1415-annex-g-trl_en.pdf