Wello Penguin

The Penguin is a wave energy converter (WEC) which was developed by Finnish company Wello Oy between 2008 and 2023. Two full-scale device were constructed, and tested in Scotland and Spain respectively, although both tests ended in difficulties.

The concept was a rotating-mass type WEC, with an asymmetric counterweight connected to a generator to harvest energy from the movement of the hull in passing waves. An assessment of wave energy technologies in 2020 rated it at a technology readiness level of TRL7, i.e. full-scale prototypical system demonstration in a relevant environment.