The power station is designed to generate electricity at times of peak demand and is instantly dispatchable: it can go from standstill to full generation within 75 seconds, compared with 12 hours for some thermal plants.

Since 2004, Turlough Hill has been the Hydro Control Centre (HCC) for the entire ESB hydroelectric portfolio, which comprises 19 generators in total.

Between 2007 and 2012, Voith Hydro, the original equipment manufacturer, refurbished all four 73 MW pump-generators in the plant.

Open-loop Pumped Hydro Storage