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TRL 1 - TRL 2 - TRL 3 - TRL 4 - TRL 5 - TRL 6 - TRL 7 - TRL 8 - TRL 9 - TRL 10





TRL FOUR - Level 4 – Laboratory testing of prototype component or process

Design, development and lab testing of technological components are performed. Here, basic technological components are integrated to establish that they will work together. This is a relatively “low fidelity” prototype in comparison with the eventual system. For example, small scale models might be used in a water test tank. The sun tracking electronics and wing furling system verified working in scale.








SCALE - The TRL scale is a metric for describing the maturity of a technology. The acronym stands for Technology Readiness Level. The scale consists of 9 levels. Each level characterises the progress in the development of a technology, from the idea (level 1) to the full deployment of the product in the marketplace (level 9).

















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