Skip to content


Pump Hydro Energy Storage

Pump Hydro Energy Storage

Objective of the project

The SMARTWATER project generated some investigation tools to assess the feasibility of the rehabilitation of end-of-life quarries and mines into medium-sized Pump Hydro Energy Storage (PHES) units. The project implemented a holistic approach encompassing legal, environmental, economic, hydraulic, electro-mechanical, and geological aspects. The reservoir capacity and hydraulic head of most of the sites under consideration are around a few hundreds of thousand cubic meters and a few dozen meters respectively. Economic feasibility included assessment of the cost reduction opportunities offered by such site configurations (widespread in Wallonia) and the exploration of innovative multi-service (DSO and TSO) exploitation strategies in the context of an increasing intermittent production.

You can find more details in French version of our Website:




Energy storage


  • Multitel


  • Ecorem
  • Engie Electrabel
  • Engie Fabricom
  • Engie Laborelec
  • UCL ( CEREM)
  • ULB ( ATM)
  • ULiège ( HECE, HGE, GGI)
  • UMons ( GELE, GEO)

Share this page

Interested in our activities? Subscribe to our newsletter