The Trotman Unit is a point absorbing wave energy collector, designed for inshore deployment adjacent to coastal topography that will support a lower storage reservoir at 12m elevation, and an upper storage reservoir at 70m elevation.  The system incorporates off peak pumped sea water storage to augment available wave energy, and the combined installation will guarantee 5MW output for 2 hours peak demand period, every day.   The point absorber wave energy field is laid close to the lower reservoir in approximately 15m mean water depth, at a site that favours both wave and swell.  The Trotman pumps may be operated alongside other pumped sea water devices such as the Seadog (www.inri.us/index.php/SEADOG) and the Oyster array (www.aquamarinepower.com/).      

System Operation.    See Diagram 1.

During wave or swell action, sea water from the pump field is fed ashore to the lower reservoir at a head of 12m.  On reaching capacity the lower reservoir empties back into the sea via a turbo-ram pump which in turn feeds the upper reservoir, direct from the sea, at a head of 70m. In addition, and for approximately 7 hours per day (more if field output is low), during off peak periods a 750KW back-up pump feeds the upper reservoir direct from the sea.  At chosen peak demand periods, and for a guaranteed 2 hours per day, the upper reservoir empties back to the lower reservoir via a hydro-electric turbine with output of 5MW to the grid.  If available, and as a bonus, any local natural water resource may be routed into the lower reservoir.