Alfen, an energy solutions specialist in Europe, is to build one of the first large scale 4-hour battery energy storage systems in the Netherlands. The company has signed an agreement with FlevoBESS for this purpose.
Alfen will supply a system with a capacity of 31.6MW/126.4MWh. The energy storage system, located near Dronten, in Flevoland, will support the region’s ambitious energy transition goals by stabilising the grid, enabling renewable integration.
The energy storage system is expected to be operational and connected to the grid in the 3rd quarter of 2025 and is also already prepared for future expansion, with a scale-up to 204MWh already being explored. As reported earlier this month, Eneco will deploy the battery on a long-term basis to manage differences in supply and demand of renewable power in the Dutch energy markets.
System features latest generation of Alfen’s battery containers
This project leverages Alfen’s expertise across multiple businesses to deliver a comprehensive energy storage solution. It integrates Alfen’s latest generation of battery containers, which have an exceptional energy density of up to 4MWh within a 20 ft container. This design enables efficient back-to-back and side-by-side installations, significantly reducing the required footprint. Paired with Alfen’s largest inverters on the market, these containers deliver up to 4 hours of discharge capability to increase demand for energy solutions that can handle longer durations of supply and demand balancing.
4-hour system
This 4-hour system marks a pivotal step in energy storage, enabling applications that require greater flexibility and multi-functionality. With 4 hours of discharge, these systems can better support grid balancing, renewable energy integration, and energy trading, while offering operators the potential to run more simultaneous applications, increasing the system’s overall efficiency and value.
Alfen’s Smart Grids team will provide a high-capacity walk-in substation to enable seamless integration with the local energy infrastructure, while the Energy Storage Systems team will deploy 6 7.5MVA subsystems. These innovations demonstrate Alfen’s commitment to delivering scalable and forward-looking energy solutions tailored to the energy market’s evolving needs.
FlevoBESS
FlevoBESS is a partnership arising from the XY Wind, Ansjovisstroom and Flevo Ventum wind farms in the eastern part of the province of Flevoland. These wind farms are part of Windplan Groen. Local residents and members of Windshare also participate in FlevoBESS. FlevoBESS is part of battery farm Dronter Energie Opslag. Source: Alfen
A vision for the future
Scheduled for completion by the third quarter of 2025, the project will help stabilise the grid and support various applications. With a 4-hour discharge capacity, the system provides flexibility for grid balancing, energy trading and integrating renewable energy sources. The design includes provisions for future scalability, with an expansion to 204MWh already being explored. Source: Alfen