Efficiency of the Power Station. 

The plant at Coolkeeragh has switched from the outdated oil-burning technology of the old power plant to Combined Cycle Gas Turbine (CCGT) power generation of the new generating plant.

CCGT is considered to be the most efficient and environmentally friendly method of generating electricity, as it re-harnesses energy, steam and heat produced in the first stage generation process and uses this to generate additional electricity. As a result, for the same input of energy, CCGT generates over a third more electricity than a traditional thermal power plant.

The thermal efficiency of CCGT is the highest of all forms of electricity generation based on fossil fuel combustion. The thermal efficiency of the Coolkeeragh ESB is greater than 55% which is significantly higher that the 28% efficiency achieved by the old power plant.

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