Dutch lithium battery hybrid energy storage system

Is S4 Energy launching a battery energy storage system in the Netherlands?

ROTTERDAM, Netherlands – 4 February 2025 – S4 Energy, Rotterdam-based leader in European grid-scale storage, has operationalized its state-of-the-art 4-hour Battery Energy Storage System (BESS), the first of its kind in the Netherlands.

Does S4 Energy have a hybrid energy storage system?

S4 Energy’s flywheels in foreground with Leclanché containerised battery storage systems behind. Image: Leclanché. A hybrid energy storage system combining lithium-ion batteries with mechanical energy storage in the form of flywheels has gone into operation in the Netherlands, from technology providers Leclanché and S4 Energy.

Why is the deployment of utility scale batteries important in the Netherlands?

The deployment of utility scale batteries in the Netherlands is particularly important given the serious network congestion warnings caused by the rapid growth of intermittent renewable energy capacity on the grid.

What is Leclanché's new battery storage system?

The new storage system features a combination of Leclanché’s lithium-ion battery storage technology coupled with S4 Energy‘s Kinext flywheel storage. The Heerhugowaard project in The Netherlands will serve Dutch frequency containment reserve market. The 10MW system will provide power to support frequency stabilization for Tennet.

What is a hybrid energy system?

This system is intended to assist the integration of more renewables into the grid. The Netherlands has ambitious targets for renewable energy generation, but this will need storage. The flywheels can store energy for a short time, and the batteries for longer, so the hybrid system will have more flexibility.

How much does a hybrid battery-flywheel storage facility cost?

The hybrid battery-flywheel storage facility in the Netherlands, featuring a 10 MW battery system and a 3 MW flywheel system, reportedly offers a levelized cost of storage ranging between €0.020 ($0.020)/kWh and €0.12/kWh.