Energy storage is witnessing dynamic engagement from market players both domestically and internationally, particularly in the realm of large-scale, pumped-storage technology, a trend underscoring the growing demand for low-cost, eco-friendly energy through renewable energy sources.

The Hollow Mountain project in Scotland, being developed by the Drax group at the Ben Cruachan power facility in the Argyll county, is a notable recent example beyond Greece. The project, to be developed at the slope of a mountain, will more-than-double the power facility’s current capacity of 440 MW.

In Greece, Terna Energy is developing a large-scale 680-MW pumped storage project and is being followed by other groups.

One of these, the power utility PPC, is planning the construction of five pumped-storage stations to offer a total capacity of 1,407 MW, an investment worth over one billion euros and set to add to the group’s current portfolio of pumped-storage stations, currently at 696 MW.

These projects hold the potential to address long-term electricity storage requirements that will emerge due to the expanding integration of renewable energy sources into grids.