Located next to the Amblève River, one of the few sites where 250+ meter local elevation can be found in Belgium.

When energy demand is high, water can be released from these reservoirs for power generation.

[2] The lower reservoir for the power station has an elbow shape as it is a former meander of river Ambleve (now bypassed by a 15m high waterfall).

Those plans were then abandoned as the chemical battery technology was considered a better choice, mostly to implement smaller units with limited distribution network upgrade requirements[5] Instead, in 2021, one of the upper reservoir's dykes have been raised by 2-meter, as first step of a major maintenance of the station.

It generates about 1 million MWh annually and consumes about 20 percent more in pumping mode.