TRL (Technology Readiness Level) is a ‘measurement system used to assess the maturity level of a particular technology’ a new technology under development, and its readiness for market uptake. The TRL scale evaluates the maturity of a technology according to a series of indicators that go from 1 (the basic principles are documented) to 9 (the technology is released, and industrial production is started). 

CRL – Commercial Readiness Level is a measure on a scale of 1 to 9 of how ready a technology is to be made commercially available, starting from the belief a new technology could be commercially successful all the way through to full regulatory compliance, commercial availability and wider acceptance within the target market. It assesses various indicators which influence the commercial and market conditions beyond just the technology maturity.