Interesting that they are using fresh water in a closed loop...

Interesting that they are using fresh water in a closed loop system:

"The CETO 3 design captures the energy in the waves to pressurise a hydraulic working fluid (fresh water), that is continuously recirculated within a closed loop system providing for energy extraction using conventional hydro electric technologies. To achieve this, CETO 3 has a nominal mechanical capacity of 200kW with a system operating pressure in the range of 80 to 120bar. The operating parameters and capacity of CETO 3 have
been optimised around the prevailing wave environment for common sites in both the Southern and Northern Hemispheres."

My only comment is they won't be using fresh water if and when they use CETO 3 for desalination purposes.