Underground Pumped Hydro Energy Storage Project Final Report

Banpu Energy Australia (BEN), a renewable energy and sister company of Centennial Coal, undertook an investigation to re-purpose depleted underground coal mines in preparation for use to assist enable the renewable energy transition.

The Centennial Pumped Hydro Energy Storage project proposed to perform a series of technical studies and trials for the potential deployment of a nominal 600 MW pumped hydro energy storage (PHES) system utilising the underground coal mining voids (Figure 1). If successful, it would represent a world first-of-kind demonstration at utility scale.