World’s First Megawatt-Scale Tidal Turbine Installed

 The power of the ocean without the smell of the sea

Marine Current Turbines Ltd, the global leader in tidal stream technology, has successfully completed the installation of its 1.2MW SeaGen tidal energy system in Strangford Narrows in Northern Ireland. There will now be a 12-week period of commissioning and testing before it starts regularly feeding power into the Northern Ireland grid.


After being carefully positioned by the heavy-lift crane-barge “Rambiz” in the early hours of 3 April there has been a six-week operation to secure the 1000 tonne structure to the seabed and link up SeaGen’s grid connection to the electricity sub-station on the southern shore of Strangford Lough.


The completion of the installation was achieved with the placing of the superstructure on top of SeaGen last week and the departure of the Missing Link support vessel which has now slipped its moorings and headed back out to the Irish Sea.


Martin Wright, Managing Director of Marine Current Turbines said: “This has been a ground-breaking operation, the like of which has never been attempted before and it has attracted interest from around the world. SeaGen’s installation has been filmed by TV crews from North America, Germany and France as well as from Ireland and the UK. MCT’s engineering team is to be congratulated for the excellent progress it has made over the past few weeks in very challenging conditions and we now move to the commissioning phase and commercial operation.”


When fully operational the tidal system’s 16m diameter, twin rotors will operate for up to 18-20 hours per day to produce enough clean, green electricity, equivalent to that used by a 1000 homes. This is four times greater than any other tidal stream project so far completed, including MCT’s earlier 300kW Seaflow system installed off Lynmouth in Devon in 2003.


ESB Independent Energy, the retail subsidiary of Ireland’s ESB, has signed a Power Purchase Agreement to supply to its customers across the island of Ireland with the electricity produced by the SeaGen system. An official ‘switch-on’ ceremony is scheduled for late summer.