Pumped Storage Projects



In the promising field of energy storage, TERNA ENERGY is leading the way with the Amfilochia pumped storage project.

It is a critical project that has been declared a Project of Common Interest (PCI) ever since 2013 and a Strategically Significant Investment ever since 2014.

The “Pumped-storage system in Amfilochia” is the largest grid energy storage investment in Greece. With a total installed capacity of 680 MW (production) and 730 MW (pumping), it includes two independent upper reservoirs, Agios Georgios and Pyrgos, of approximately five and two mil cubic metres, respectively, and PPC’s lake Kastraki as its lower reservoir. The investment exceeds 500 mil euro and yields ~816.00 GWh annually.

In operation (MW)


Under construction or ready to build (MW)


Pipeline (MW)