15.7.2025 EP NL and Eneco are realising a large-scale battery project at Enecogen's Europoort power plant, in which both parties hold a 50% stake. The battery will have a connection capacity of 50 MW and an energy storage capacity of 200 MWh, enabling it to supply electricity for four hours.
The storage project will make use of the plant's existing grid connection. But while making the announcement, the two companies were vocal about costly obstacles in the Netherlands for batteries. Eneco and EP NL have announced a joint investment in a 50 MW / 200 MWh battery storage project at the Enecogen power plant in the port of Rotterdam.
Enecogen will handle the battery's maintenance and operations, while the trading departments of EP NL and Eneco will control its deployment. No financial details were announced. In the announcement, the companies noted that battery development in the Netherlands lags behind other European countries, citing grid fees as a primary obstacle.
This will provide more flexibility for the Dutch electricity system when the battery is put into operation in 2027. Battery storage enables electricity to be stored when there is more available than is needed, for example when a lot of solar and wind energy is generated.
Flywheel energy storage is mostly used in hybrid systems that complement solar and wind energy by enhancing their stability and balancing the grid frequency because of their quicker response times or with high-energy density storage solutions like Li-ion batteries .
The magnetically suspended flywheel energy storage system (MS-FESS) is an energy storage equipment that accomplishes the bidirectional transfer between electric energy and kinetic energy, and it is widely used as the power conversion unit in the uninterrupted power supply (UPS) system.
The flywheel energy storage system (FESS), as an important energy conversion device, could accomplish the bidirectional conversion between the kinetic energy of the flywheel (FW) rotor and the electrical energy of the grid 1, 2, 3.
Beyond pumped hydroelectric storage, flywheels represent one of the most established technologies for mechanical energy storage based on rotational kinetic energy . Fundamentally, flywheels store kinetic energy in a rotating mass known as a rotor [, , , ], characterized by high conversion power and rapid discharge rates .
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