The turbine is based at the European Marine Energy Centre and is the first device there to hit the 100 MWh mark.
The 500 KW three-bladed turbine is attached by a tripod to the seabed and can operate 40 metres underwater. Its design allows it to continually rotate to face the incoming tide at an optimal angle.
Rolls-Royce Power Ventures’ vice president Robert Stevenson said: “Reaching the 100 megawatt hours milestone highlights the significant potential of cleaner, greener tidal power as part of a diversified UK energy mix. Having proven the capability of tidal energy, Rolls-Royce is well placed to meet any future demand with larger, more efficient technology on a commercial scale.”