|Fig 1: Readiness-performance matrix (reproduced with permission from Weber)|
The technology readiness level (TRL) is the de-facto metric for describing the development stages of wave energy technologies. The TRL indicates a technology's maturity, and is strongly related to the amount of investment. Weber's paper proposes a second metric, the technology performance level (TPL). Arranged like TRL on a scale of 1 to 9, it measures a technology's economy, and is inversely related to the cost of energy.
In a two-dimensional graphic these two metrics give us the readiness-performance matrix. The development trajectory of a wave energy technology can be plotted against it. Fig 1 shows three hypothetical trajectories:
- Orange: Readiness before performance
- Green: Performance before readiness
- Black: Performance and readiness developed together