QUEEN ELIZABETH – Engined Up – the Aircraft Carrier QUEEN ELIZABETH, completing at Rosyth has had installed the first (of two) Rolls-Royce MT30 marine gas turbine - the world's most powerful marine gas turbine.    The two Rolls-Royce MT30, at 36 megawatts each (around 50,000 horsepower each) when fitted will provide two thirds of the 109 megawatts needed to power the 65,000-tonne ship - enough electricity to power a town the size of Swindon.    The power generated will meet the carriers’ demand for energy, which includes the propulsion motors, weapons and navigation systems as well as the entire low-voltage requirements for lighting and power sockets.    The MT30s are being installed as part of a gas turbine alternator which also includes an alternator and gas turbine enclosure, weighing a total of 120 tonnes.