Alfen signs agreement with FlevoBESS to build one of the Netherlands’ first large-scale 4-hour battery energy storage systems
- Alfen will deliver 31.6MW/126.4MWh battery energy storage system
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First large-scale 4-hour system in the Netherlands equipped with Alfen’s latest inverters
- Signed in December 2024, the installation is on track for completion in Q3 2025
Almere, the Netherlands, 28 January 2025— Alfen, an energy solutions specialist in Europe, has signed an agreement with FlevoBESS to deliver a 31.6MW/126.4MWh battery energy storage system, one of the first large scale 4-hour systems in the Netherlands. Located near Dronten, in Flevoland, a central part of the Netherlands, the system will support the region’s ambitious energy transition goals by stabilising the grid, enabling renewable integration, and preparing for future expansions to 204MWh by 2028. The agreement was signed in December 2024 and installation is on track for completion in the third quarter of 2025.
"The Alfen team is very proud of the intensive preparatory phase with FlevoBESS and to partner with them on such a landmark project, both in terms of size and solutions," said Stephanie Schockaert, Commercial Director for Alfen’s Energy Storage Solutions. "This system marks a significant step forward in energy storage capacity and technology, demonstrating our ability to deliver large-scale, future-ready solutions for our customers."
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.
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.
“Alfen’s innovative 4-hour solution optimises space and incorporates the latest safety and operational advancements to ensure greater reliability and efficiency,” Schockaert said. “We’re proud to partner with FlevoBESS to introduce this innovation advancement and demonstrate Alfen’s commitment to offer scalable and forward-looking energy solutions.
Supporting the local community
FlevoBESS is a consortium of local entrepreneurs and participants from the Flevoland region, united by their commitment to advancing sustainable energy solutions and fostering regional economic growth. By investing directly in the project, the local community plays an active role in its success, creating a sense of shared ownership and reinforcing Flevoland’s reputation as a hub of sustainable innovation.
“The FlevoBESS project is built on collaboration and innovation across multiple stakeholders,” said Gert Naber, board member of FlevoBESS. “Our consortium is committed to making a real impact in the region by driving local engagement and making sustainable progress. We chose Alfen as a key partner for their proven track record in developing innovative, sustainable energy storage solutions and their dedication to making this project successful. In particular, FlevoBESS is a local initiative with all our shareholders having strong roots in this region. Partnering with Alfen, a company with strong local roots for more than 85 years, is a natural fit. Together, we’re building a reliable energy infrastructure that brings economic and environmental benefits to our community.”
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.
About Alfen
Alfen is at the forefront of Europe’s energy transition, providing integrated solutions that help customers address their electricity challenges and achieve climate neutrality. With a history of innovation dating back to 1937, Alfen’s energy storage systems, smart grid solutions, and EV charging stations are installed across more than 30 countries in Europe. The company has been developing energy storage systems since 2000, with installations totalling over 1+ GWh of energy capacity across 11 European countries. For more about Alfen’s Energy Storage Systems, visit TheBattery.