Understanding TRLs: The Pathway from Concept to Implementation

Technology Readiness Levels (TRLs) provide a systematic framework to assess the maturity of a technology. This scale, ranging from TRL1 to TRL9, outlines the evolution from basic research to a fully operational system. Below is a detailed example for each TRL, using a hypothetical technology type, such as a new solar panel system.

  1. TRL1 - Basic Principles Observed: At this initial stage, basic scientific research is conducted, focusing on observing the principles that could underpin the new technology. For example, discovering a new photovoltaic material that could potentially increase solar panel efficiency.
  2. TRL2 - Technology Concept Formulated: Here, the initial concepts for applying the new material in solar panels are developed. This stage involves theoretical work and early design, without any experimental testing.
  3. TRL3 - Experimental Proof of Concept: The new material is tested in a laboratory setting to validate the concept. This includes small-scale experiments to demonstrate its efficiency in converting sunlight to electricity.
  4. TRL4 - Technology Validated in Lab: The technology undergoes further development in the lab, with tests conducted to refine the concept and improve its functionality in controlled conditions.
  5. TRL5 - Technology Validated in Relevant Environment: A prototype solar panel using the new material is tested in a controlled, but more realistic environment, such as a simulated outdoor setting with varying light conditions.
  6. TRL6 - Technology Demonstrated in Relevant Environment: The prototype is now tested in a real-world environment, like on a building's rooftop, to assess its performance under actual operating conditions.
  7. TRL7 - System Prototype Demonstration in Operational Environment: A more advanced prototype, close to the final product, is tested in an operational environment. This involves extensive testing for durability, efficiency, and reliability under different weather conditions.
  8. TRL8 - System Complete and Qualified: The solar panel system is now finalized, with all components tested, qualified, and ready for commercial production. Rigorous testing ensures that the system meets all industry standards.
  9. TRL9 - Actual System Proven in Operational Environment: The final stage, where the solar panel system is fully operational and deployed in the market. It is proven to work reliably and efficiently in various real-world settings, like residential buildings, commercial properties, and solar farms.

TRLs

The journey of technology from TRL1 to TRL9 can be visualized as a progression from basic research to practical, real-world applications.