I s l a y
unit on Islay has an inclined oscillating water column (OWC) that
couples with the surge-dominated wave field adjacent to the shore. The
water depth at the entrance to the OWC is typically seven metres.
The design of the air chamber is important to maximise the capture of
wave energy and conversion to pneumatic power.
The turbines are carefully matched to the air chamber to
maximise power output.
performance has been optimised for annual average wave intensities of
between 15 and 25kW/m. The water column feeds a pair of
counter-rotating turbines, each of which drives a 250kW generator,
giving a nameplate rating of 500kW.
The Limpetís design makes it easy to build and install. Its low
profile gives low visibility, so it doesnít intrude on coastal
landscapes or views.