*5.1.7 Wind energy harvesting*

Wind-based energy harvesting is increasingly pursued due to the ubiquitous nature of the source, as well as complementarity with other sources (e.g., solar). In particular, vortex-induced vibrations (VIV) are investigated [41].

Vortex-induced vibration energy harvesting mechanisms can be divided into five categories, namely, flutter, VIV, galloping, wake-galloping, and hybrid-type flowinduced vibrations. VIV energy harvesters are designed for regions with low wind speed [42].
